[Fungi • 2026] Clonostachys kasetsartana (Hypocreales) • A Novel epiphytic Fungus isolated from the mangrove leaves in Thailand

Clonostachys kasetsartana   

in Sahathippayakul​, Supapongsri​, Kuncharoen​, Suwannarach et Lueangjaroenkit, 2026. 

DOI: doi.org/10.1099/ijsem.0.007273

Abstract

Two fungal isolates, DMKU-RG2M15ᵀ and DMKU-RG2P11, were isolated from the phylloplane of healthy leaves of the mangrove tree Ceriops tagal (Perr.) C.B. Rob., collected in Chanthaburi Province, Thailand. Their taxonomic placement was investigated using a polyphasic approach based on morphological, physiological and multilocus phylogenetic analyses. Colonies produced primary conidiophores with verticillate branching, bearing hyaline, smooth-walled, oval to ellipsoidal conidia. Phylogenetic analyses based on a combined dataset of the internal transcribed spacer region, the large subunit rRNA gene, translation elongation factor 1-α, β-tubulin and RNA polymerase II second-largest subunit resolved the two isolates as a distinct and well-supported monophyletic lineage within the genus Clonostachys. Phylogenetic analyses showed that the two isolates are closely related to Clonostachys mangrovei, Clonostachys viticola and Clonostachys reniformis. Morphological and physiological comparisons further distinguished the isolates from their closest relatives. The congruence between phylogenetic and phenotypic data supports the recognition of the two isolates as representing a distinct species. Accordingly, both strains are proposed as a novel species of Clonostachys, for which the name Clonostachys kasetsartana sp. nov. is introduced.

 Keywords: fungal taxonomy, leaf habitat, mangrove forest, multilocus phylogeny and novel fungus

Clonostachys kasetsartana sp. nov.

 

Ananya Sahathippayakul​, Vassana Supapongsri​, Nattakorn Kuncharoen​, Nakarin Suwannarach and Piyangkun Lueangjaroenkit. 2026. Clonostachys kasetsartana sp. nov., A Novel epiphytic Fungus isolated from the mangrove leaves in Thailand. International Journal of Systematic and Evolutionary Microbiology. 76(8); DOI: doi.org/10.1099/ijsem.0.007273 [19 August 2026]

รายงานการค้นพบเชื้อรา Clonostachys สปีชีส์ใหม่ของโลก คือ Clonostachys kasetsartana ซึ่งแยกได้จากบนผิวใบของต้นโปรงแดง (Ceriops tagal) ในสวนพฤกษศาสตร์ป่าชายเลนนานาชาติ รัชกาลที่ 9 จังหวัดจันทบุรี

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[Botany • 2026] Rhododendron trichopetalum & R. yalaense (Ericaceae) • Two New Species, Three New Records and Taxonomic Notes of Rhododendron in Thailand

Rhododendron yalaense Tubtamat, Watthana & Suwanph.
 

 in Tubtamat, Watthana, Hodkinson et Suwanphakdee, 2026. 

DOI: doi.org/10.20531/tfb.2026.54.2.10

Photographed by M. Tubtamat and C. Suwanphakdee.

Abstract

Two new species, Rhododendron trichopetalum and R. yalaense, from Peninsular Thailand, are described and illustrated. Three new records of R. jasminiflorum, R. klossii and R. robinsonii are newly reported for Thailand, and R. klossii is herein reinstated. Lectotypifications were designated where required and an updated key to species, modified from the Flora of Thailand, is provided.

Keywords: anatomical features, Ericaceae, plant taxonomy, pollen morphology, Flora of Thailand

Rhododendron trichopetalum Tubtamat & Suwanph.
A. flowering branch; B. flowers; C. hairs on corolla tube; D. basal filament with hairs; E. anther; F. ovary; G. stigma; H. capsule.

Photographed by C. Suwanphakdee and M. Tubtamat.

Rhododendron trichopetalum Tubtamat & Suwanph., sp. nov.

This species is similar to Rhododendron javanicum subsp. teysmannii (Miq.) Argent, however, R. trichopetalum lacks hairs on lower leaf surfaces (vs sparsely hairy or glandular-verruculose in R. javanicum subsp. teysmannii), with the corolla tube being sparsely hairy outside (vs glabrous), and the larger capsule 2.3–2.5 cm long (vs 3.7–8 cm long).

Rhododendron yalaense Tubtamat, Watthana & Suwanph.
A. habit; B. scales on lower leaf surface; C. inflorescence; D. ovary; E. stigma; F. capsule.

Photographed by M. Tubtamat and C. Suwanphakdee.

Rhododendron yalaense Tubtamat, Watthana & Suwanph., sp. nov.

This new species is similar to Rhododendron rarilepidotum J.J.Sm., endemic to Indonesia, but differs by having petioles without grooves (vs with grooves in R. rarilepidotum), corolla 3.1–3.6 cm long (vs 2–2.5 cm long), pale orange with 2.1–3.0 cm long filaments (vs purplish, dark red or white, 0.9–1.0 cm long), yellow anthers (vs purplish) and cylindrical capsule (vs fusiform capsule).

Maneenuch Tubtamat, Santi Watthana, Trevor R. Hodkinson and Chalermpol Suwanphakdee. 2026. Two New Species, Three New Records and Taxonomic Notes of Rhododendron (Ericaceae) in Thailand. Thai Forest Bulletin (Botany). 54(2); 92–116. DOI: doi.org/10.20531/tfb.2026.54.2.10 [2026-08-10] 

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กุหลาบฮาลา และ กุหลาบเพลิงภักดิ์: กุหลาบพันปีชนิดใหม่ของโลก

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👩🏻‍💼น.ส. มณีนุช ทับทะมาตย์ นิสิตปริญญาโท ภาควิชาพฤกษศาสตร์ คณะวิทยาศาสตร์ มหาวิทยาลัยเกษตรศาสตร์ ค้นพบกุหลาบพันปี  ชนิดใหม่ของโลก 2 ชนิด 

🔬การค้นพบนี้เป็นผลงานวิจัยในระดับปริญญาโท ภายใต้การดูแลของ รศ. ดร. เฉลิมพล สุวรรณภักดี ภาควิชาพฤกษศาสตร์ คณะวิทยาศาสตร์ มหาวิทยาลัยเกษตรศาสตร์, รศ. ดร. สันติ  วัฒฐานะ สาขาวิชาชีววิทยา สำนักวิชาวิทยาศาสตร์ มหาวิทยาลัยเทคโนโลยีสุรนารี และ Prof. Dr. Trevor R. Hodkinson จากทรินิตี้คอลเลจ มหาวิทยาลัยแห่งกรุงดับลิน ประเทศไอร์แลนด์ ซึ่งตีพิมพ์เผยแพร่ในวารสาร 🌱Thai Forest Bulletin (Botany) 🌱 ซึ่งกุหลาบพันปีทั้ง 2 ชนิด ประกอบด้วย

1. Rhododendron trichopetalum Tubtamat & Suwanph. ชื่อไทย กุหลาบฮาลา พบที่จังหวัดนราธิวาส  ดอกมีสีเหลืองเข้ม กลีบดอกเป็นเอกลักษณ์ และเจริญเติบโตแบบพืชอิงอาศัยในป่าดิบชื้น ความโดดเด่นของลักษณะดอกและการปรับตัวต่อสภาพแวดล้อม ทำให้มีศักยภาพในการใช้เป็นแหล่งพันธุกรรมสำหรับการปรับปรุงพันธุ์ไม้ดอกประดับในอนาคต

2. Rhododendron yalaense Tubtamat, Watthana & Suwanph. ชื่อไทย กุหลาบเพลิงภักดิ์ พบที่จังหวัดยะลา ดอกมีสีส้มเข้ม ออกเป็นช่อค่อนข้างแน่น และเจริญเติบโตแบบพืชอิงอาศัย ด้วยลักษณะดอกที่โดดเด่นและสีสันสวยงาม จึงมีศักยภาพในการพัฒนาเป็นไม้ดอกประดับในอนาคต ควบคู่กับการอนุรักษ์ทรัพยากรพันธุกรรมของพืชพื้นถิ่นไทย

[Herpetology • 2026] Calotes thailandensis & C. maehongsonensis • Systematics of the Calotes irawadi complex (Squamata: Agamidae) with Two newly described Species from Thailand

Calotes thailandensis 

Prakobkarn, Zug, Tandavanitj & Ngamprasertwong, 2026

 

กิ้งก่ารั้ว, กิ้งก่าหัวแดง  DOI: doi.org/10.3897/zookeys.1281.175455 

Abstract

Two new species of Calotes lizards, Calotes thailandensis sp. nov. and C. maehongsonensis sp. nov., are diagnosed and described from Thailand. These new species are most closely related to C. irawadi and C. wangi, which are members of the C. irawadi complex, supported by phylogenetic analysis of mitochondrial DNA data (ND2 and COI genes) coupled with morphometric and osteological data. Calotes thailandensis sp. nov. and C. maehongsonensis sp. nov. are distinguished from true C. irawadi by having a wider PelvW, but a smaller head size in adult males. In particular, adult males of C. thailandensis sp. nov. obviously differ from both C. irawadi and C. wangi by having a longer supratympanic spine, whereas C. maehongsonensis sp. nov. has a distinctly longer hindlimb than that of C. irawadi and C. wangi. As a result, two new species increase the list of known Calotes species in Thailand to four species; C. thailandensis sp. nov., C. maehongsonensis sp. nov., C. emma and C. goetzi.

Key words: Morphometric analysis, osteology, phylogenetic analysis, Southeast Asia, taxonomy

An uncollected male (A, B) on breeding season (March, 2025) and female (D) (CUMZ-R-2767) of Calotes thailandensis sp. nov. in rubber plantation (C) at Khlong Hoi Kong District, Songkhla Province, Thailand.

 Calotes thailandensis sp. nov. 

C. maehongsonensis sp. nov.

 Arpapan Prakobkarn, George R. Zug, Nontivich Tandavanitj and Thongchai Ngamprasertwong. 2026. Systematics of the Calotes irawadi complex (Squamata, Agamidae) with Two newly described Species from Thailand. ZooKeys. 1281: 69-104. DOI: doi.org/10.3897/zookeys.1281.175455 [03-06-2026]

[Phycology • 2026] Lobophora lewmanomontiae, L. ogawae, ... • A Survey along the East Coast of Thailand reveals High Diversity in the Genus Lobophora (Dictyotales: Phaeophyceae): with the Description of Four New Species

 

Lobophora lewmanomontiae A. M. Klomjit, J. Praiboon & N. Muangmai sp. nov.
 Lobophora ogawae A. M. Klomjit, C. W. Vieira & N. Muangmai sp. nov. 
Lobophora thiemmedhii A. M. Klomjit, C. W. Vieira & N. Muangmai sp. nov. 
Lobophora velasquezii A. M. Klomjit, S. G. A. Draisma & N. Muangmai sp. nov. 

in Klomjit, Draisma, Praiboon, Jurejan, Sutti, Sun, Vieira et Muangmai, 2026. 

 DOI: doi.org/10.4490/algae.2026.41.2.2  

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 ABSTRACT

Lobophora (Dictyotales, Phaeophyceae) is an ecologically important seaweed genus in tropical and subtropical marine ecosystems. This alga exhibits cryptic diversity and morphological plasticity, which require taxonomic delineations that primarily depend on DNA analyses, complemented by morphological and ecological data. Species diversity and distribution within Southeast Asia remain understudied compared to well-documented regions such as the Caribbean and the western Pacific. This study provides a comprehensive assessment of the genus Lobophora along the east coast of Thailand, integrating DNA-based surveys with morphological analyses. Extensive sampling across the Gulf of Thailand revealed 14 well-supported monophyletic clades of Lobophora. Among these, we described four new species (L. lewmanomontiae sp. nov., L. ogawae sp. nov., L. thiemmedhii sp. nov., and L. velasquezii sp. nov.) and reported three new national records (L. abscondita, L. henae, and L. quangtriensis), thereby bringing the Thai total to 21 species. When combined with previous records, 30 species have now been recorded from Southeast Asia, with 12 of which are endemic to the region. This study also emphasizes the importance of extensive sampling across broader areas, which enhances our understanding of biogeographic distributions and their implications for coastal ecosystem management.

Key words: DNA barcoding; Gulf of Thailand; macroalgae; Phaeophyceae; phylogeny; species diversity; taxonomy

In situ photographs of four new Lobophora species from east coast of Thailand.
(A) Lobophora lewmanomontiae sp. nov. (THNHM-P-2021-0314). (B) Lobophora ogawae sp. nov. (THNHM-P-2021-0310).
(C) Lobophora thiemmedhii sp. nov. (THNHM-P-2022-02470). (D) Lobophora velasquezii sp. nov. (THNHM-P-2022-0237).

Scale bars represent: A, 3 cm; B, 1 cm; C & D, 2 cm.

Lobophora lewmanomontiae A. M. Klomjit, J. Praiboon & N. Muangmai sp. nov. 

Lobophora ogawae A. M. Klomjit, C. W. Vieira & N. Muangmai sp. nov.

Lobophora thiemmedhii A. M. Klomjit, C. W. Vieira & N. Muangmai sp. nov.

Lobophora velasquezii A. M. Klomjit, S. G. A. Draisma & N. Muangmai sp. nov.

Ex situ photographs, transversal (Top) and longitudinal (Bottom) section on holotype specimens.
(A–C) Lobophora lewmanomontiae sp. nov.
(D–F) Lobophora ogawae sp. nov.
(G–I) Lobophora thiemmedhii sp. nov.
(J–L) Lobophora velasquezii sp. nov.

Scale bars represent: A, 2 cm; D & J, 0.5 cm; G, 1 cm.

Distribution pattern of Lobophora species along the east coast of Thailand. The black lines on the map represent the geographic borders of Thai province. The marine territories of the provinces where Lobophora species were identified, are highlighted in colors other than blue. The black dots indicated specific locations where Lobophora samples were collected. The numbers in parentheses next to the species names indicate the number of samples identified in each province. The table on the right lists the Lobophora species found in each province, with circles indicating species presence. Provinces ranked left to right by geographic location starting from east to west and then north to south.

Anirut Klomjit, Stefano G. A. Draisma, Jantana Praiboon, Narapat Jurejan, Suttikarn Sutti, Zhongmin Sun, Christophe Vieira and Narongrit Muangmai. 2026. A Survey along the East Coast of Thailand reveals High Diversity in the Genus Lobophora (Dictyotales, Phaeophyceae): with the Description of Four New Species. Algae. 41(1); 77-94. DOI: doi.org/10.4490/algae.2026.41.2.2 [March 15, 2026] 

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[Entomology • 2025] Dicnecidia narathiwatensis • A New Species of Dicnecidia Diakonoff, 1982 (Lepidoptera: Tortricidae: Olethreutinae) from Thailand

 

(A) Dicnecidia narathiwatensis Thonongtor & Pinkaew; 
(B, C) D. fumidana  Kuznetzov, 1997

in Thonongtor et Pinkaew, 2025. 

DOI: doi.org/10.58837/tnh.25.1.268382 

Abstract

Dicnecidia narathiwatensis Thonongtor and Pinkaew sp. nov. is described based on a single male specimen from Narathiwat Province, southernmost Thailand. In addition, D. fumidana Kuznetzov, 1997, previously recorded only from Vietnam, is recorded for the first time from Thailand and Laos. Illustrations of adults and genitalia are provided. The discovery of the new species increases the total number of described Dicnecidia to four.

Keywords: Eucosmini, Dicnecidia, new species, new record, Narathiwat Province

Wing pattern of Dicnecidia spp.
A. D. narathiwatensis sp. nov., male (holotype). B. D. fumidana, male (np12791). C. D. fumidana, female (np10188). Scale bars = 2 mm.

Head of Dicnecidia spp.
A. D. narathiwatensis sp. nov., male (holotype). B. D. fumidana, male (np12794). C.  D. fumidana, female (np10188).

Phawin Thonongtor and Nantasak Pinkaew. 2025. Addition a New Species of Dicnecidia Diakonoff, 1982 (Lepidoptera: Tortricidae: Olethreutinae) from Thailand and a New Record of the Genus from Thailand and Laos. Tropical Natural History. 25(1); 87-94. DOI: doi.org/10.58837/tnh.25.1.268382 (Oct. 2025) 

 

[Fungi • 2025] Sirindhornea siamensis (Basidiomycota: Agaricomycetes) • A New Sequestrate Boletoid Genus of Boletaceae from Thailand

 

Sirindhornea siamensis  

in Lueangjaroenkit, Doungsin, Jangsantear, Boonwanno, Sintawarak, Sahathippayakul, Supapongsri, Sakolrak, Himaman et Sutthinon, 2025. 

เห็ดก้อนอำพันเจ้าฟ้า | DOI: doi.org/10.58837/tnh.25.8.267496

Abstract

This study investigates sequestrate boletes from southern Thailand and presents a morphologically distinctive specimen with a strong cantaloupe-like odor. Detailed morphological and molecular phylogenetic analyses, utilizing the internal transcribed spacer (ITS), large subunit ribosomal RNA (LSU) and RNA polymerase II second largest subunit (RPB2) genes were performed to determine its taxonomic position. Nonetheless, the new sequestrate bolete exhibited a distinctive morphological features, including a scaly peridium, a characteristic cantaloupe-like odor at maturity. Together with molecular evidence, these characteristics clearly distinguish it from other sequestrate boletoid (Chamonixia, Durianella, Octaviania, Rossbeevera, and Turmalinea). These findings support the recognition of a novel genus within the subfamily Leccinoideae. Therefore, we propose a new genus and new species, Sirindhornea siamensis, for this sequestrate bolete species.

Keywords: fungal taxonomy, new genus, Leccinoideae, sequestrate boletes

  

Sirindhornea gen. nov.

เห็ดก้อนอำพันเจ้าฟ้า

Sirindhornea siamensis sp. nov. 

 Etymology.–The species epithet siamensis is named from the former name of Thailand, refers to the geographical origin of this new species.

Classification.–Leccinoideae,  Boletaceae,  Boletales, Agaricomycetes, Agaricomycotina, Basidiomycota

Piyangkun Lueangjaroenkit, Nootcharee Doungsin, Panrada Jangsantear; Tanyaporn Boonwanno; Phanin Sintawarak, Ananya Sahathippayakul, Vassana Supapongsri, Baramee Sakolrak, Winanda Himaman, Pornsawan Sutthinon. 2025. Sirindhornea siamensis, A New Sequestrate Boletoid Genus of Boletaceae from Thailand.  Tropical Natural History. Suppl. 8;  481-492. DOI: doi.org/10.58837/tnh.25.8.267496 

[Crustacea • 2025] Quadrimaera sirindhornae • A New Species of Quadrimaera (Amphipoda: Maeridae) from Coral Reefs of Chon Buri Province, Thailand

 

Quadrimaera sirindhornae    

Boonyanusith, Putchakarn & Wongkamhaeng, 2025

 Tropical Natural History. Suppl. 8 

แอมฟิพอดเจ้าฟ้า  ||  DOI: doi.org/10.58837/tnh.25.8.267553

Abstract

Quadrimaera sirindhornae sp. nov. was described from specimens collected from algae in a coral reef in Chon Buri Province, Thailand. The new amphipod species can be distinguished from its closest relative by its accessory flagellum with seven articles, gnathopod 2 propodus 1.8x longer than wide, uropod 3 ratio of outer ramus and peduncle is 1.2. The illustration and comparison of diagnostic charac-teristics in male Quadrimaera reported in Southeast Asia were provided.

Keywords: Amphipoda, new species, algal bed, Gulf of Thailand

Quadrimaera sirindhornae sp. nov. 

แอมฟิพอดเจ้าฟ้า

Chaichat Boonyanusith, Sumaitt Putchakarn and Koraon Wongkamhaeng. 2025. A New Species of Quadrimaera (Amphipoda: Maeridae) from Coral Reefs of Chon Buri Province, Thailand.  Tropical Natural History. Suppl. 8;  472-480. DOI: doi.org/10.58837/tnh.25.8.267553 [2025-11-17]

[Crustacea • 2025] Tropodiaptomus sirindhornae • A New Diaptomid Copepod (Copepoda: Calanoida) from Thailand

 

Tropodiaptomus sirindhornae   

Saetang & Maiphae, 2025

Tropical Natural History. Suppl. 8 

โคพีพอดสิรินธร  ||  DOI: doi.org/10.58837/tnh.25.8.266929

Abstract

Tropodiaptomus sirindhornae sp. nov. is described and illustrated based on materials collected from both permanent and temporary habitats across several regions of Thailand. This new species can be distinguished from its congeners by the following morphological characters of adult male antennule and fifth leg: the antepenultimate segment of right antennule with straight spinous process reaching between 1/2 and 3/4 of next segment; the inner margin of exopodal segment of left fifth leg with two lobes, and with uniform serration; the basis of right fifth leg has one triangular process and one longitudinal hyaline lamella; and second exopodal segment of right fifth leg is rectangular, posterior surface ornamented with one semicircular hyaline knob on middle close to inner margin and one triangular apophysis on distal outer margin. This species is widely distributed both spatially and temporally.

Keywords: diversity, Diaptomidae, cryptic species, new species, Southeast Asia

Tropodiaptomus sirindhornae sp. nov.
 A–G.male holotype: A.habitus, dorsal view; B.urosome, dorsal view; C.rostrum; D.left antennule, segment 1–13; E.left antennule, segment 14–25; F.right antennule, segment 1–16; G.right antennule, segment 17–22. H.female allotype, urosome, dorsal view. Scale bars = 100 μm.

 Tropodiaptomus sirindhornae sp. nov.

โคพีพอดสิรินธร

 

Thanida Saetang and Supiyanit Maiphae. 2025. Tropodiaptomus sirindhornae sp. nov., A New Diaptomid Copepod (Copepoda: Calanoida) from Thailand. Tropical Natural History. Suppl. 8; 334-344. DOI: doi.org/10.58837/tnh.25.8.266929 [2025-10-20]

[Fungi • 2025] Cyberlindnera sirindhorniae f.a., sp. nov., Blastobotrys princeps f.a., sp. nov. & B. siamensis f.a., sp. nov. • Three Novel Ascomycetous Yeast Species Isolated from Plant Leaves and Wild Mushrooms Collected in Thailand

 

Cyberlindnera sirindhorniae f.a., sp. nov. TBRC 19863T.

 

in Khunnamwong, Gungprakhon, Nualthaisong, Sakolrak, Srisuk et Limtong, 2025. 

 Tropical Natural History. Suppl. 8; 

ยีสต์สิรินธร  ||  DOI: doi.org/10.58837/tnh.25.8.267392

Abstract

Four yeast strains representing three novel species were isolated from two sources in Thailand, one from the leaf surface of a tall-stilt mangrove (Rhizophora apiculata, strain DMKU-RG45) and three from the fruiting bodies of wild mushrooms (strains DMKU-TM03, DMKU-SM11, and DMKU-SM28) collected in Thailand. Sequence analysis of the D1/D2 domain of the large subunit (LSU) rRNA gene and the internal transcribed spacer (ITS) region revealed that these four strains differed by 0.87–8.68% and 2.07–13.55% in their nucleotide divergence from their closest described species in the sequences of the D1/D2 domain of the LSU rRNA gene and the ITS region, respectively. In phylogenetic analyses, the strain DMKU-RG45 belonged to the genus Cyberlindnera and was distinct from other recognized species in this genus, whereas the strains DMKU-TM03, DMKU-SM11, and DMKU-SM28 were members of the genus Blastobotrys. However, they were in two different positions, each of which was distinct from closely related species. Based on molecular analyses and phenotypic characteristics, the strain DMKU-RG45 is proposed as Cyberlindnera sirindhorniae f.a., sp. nov. (the holotype is TBRC 19863T; MycoBank No. is MB 858763). The other three strains (DMKU-TM03, DMKU-SM11, and DMKU-SM28) are proposed as two novel Blastobotrys species. Blastobotrys princeps f.a., sp. nov. is proposed to accommodate the strain DMKU-TM03 (the holotype is TBRC 19382T; MycoBank No. is MB 858764). Blastobotrys siamensis f.a., sp. nov. is proposed to accommodate both strains DMKU-SM11 and DMKU-SM28 (the holotype is TBRC 19380T; MycoBank No. is MB 858765).

Keywords: Blastobotrys princeps, Blastobotrys siamensis, Cyberlindnera sirindhorniae, Mangrove Forest, Mushroom

Cyberlindnera sirindhorniae f.a., sp. nov. TBRC 19863T.
A‒C.colonies on YM agar after 7 days at 25 °C;
D.budding cells on YM agar after 3 days at 25 °C (bar, 10 μm);
E–G.pseudohyphae with blastoconidia grown on corn meal agar after 7 days at 25 °C.

Cyberlindnera sirindhorniae f.a., sp. nov. [the strain DMKU-RG45]

the holotype is TBRC 19863T; MycoBank No. is MB 858763

ยีสต์สิรินธร

Blastobotrys princeps f.a., sp. nov. [the strain DMKU-TM03]

(the holotype is TBRC 19382T; MycoBank No. is MB 858764)

ยีสต์เจ้าฟ้าหญิง

Blastobotrys siamensis f.a., sp. nov. [strains DMKU-SM11 and DMKU-SM28]

(the holotype is TBRC 19380T; MycoBank No. is MB 858765)

Pannida Khunnamwong, Pajongwan Gungprakhon, Panadda Nualthaisong, Baramee Sakolrak, Nanata Srisuk and Savitree Limtong. 2025. Three Novel Ascomycetous Yeast Species Isolated from Plant Leaves and Wild Mushrooms Collected in Thailand. Tropical Natural History. Suppl. 8; 399-414. DOI: doi.org/10.58837/tnh.25.8.267392 [2025-10-20]

[Fungi • 2025] Calathella sirindhorniae (Basidiomycota: Agaricales) • A New Cyphelloid Fungus from Thailand

Calathella sirindhorniae 

 in Lueangjaroenkit, Sahathippayakul, Supapongsri, Aowpitak, Sangrattanaprasert, Ngernsaengsaruay et Pinruan, 2025. 

 Tropical Natural History. Suppl. 8; 

เห็ดโกงกางจิ๋วสิรินธร  ||  DOI: doi.org/10.58837/tnh.25.8.267354  

Abstract

A novel cupulate basidiomycete fungus was discovered during a survey of mangrove-associated fungi in Chanthaburi and Phetchaburi Provinces, Thailand. This species, found exclusively on decaying Rhizophora mucronata hypocotyls in intertidal zones, forms minute fruiting bodies and shows close morphological and molecular resemblance to Calathella mangrovei Jones & Agerer, 1992. Phylogenetic analyses of ITS and LSU rDNA regions confirmed its placement within Calathella, as a distinct sister lineage to C. mangrovei. Therefore, these isolates represent a novel species, for which the name Calathella sirindhorniae sp. nov. is proposed.

Keywords: Calathella sirindhorniae, cyphelloid fungus, fungal taxonomy, new species, mangrove

Calathella sirindhorniae (BBH 50085, holotype).
A.under a stereomicroscope, showing the overall structure. The basidiomata, composed of white hyphae, have a brown surface colouration primarily due to mangrove sediment. Scale bar: 1 mm. B.Side view of the basidiomata under the SEM, revealing detailed surface features and structural arrangement. Scale bar: 1 mm. C.Top view under the SEM, highlighting the surface morphology. Scale bar: 500 μm.

Calathella sirindhorniae sp. nov. 

Etymology.–‘sirindhorniae’ (si.rin.dhorn.ni.ae) this species is named to honour Her Royal Highness Princess Maha Chakri Sirindhorn, in recognition of her deep interest in natural history and her significant contri-butions to biodiversity and environmental conservation in Thailand.

Piyangkun Lueangjaroenkit, Ananya Sahathippayakul, Vassana Supapongsri, Thithawat Aowpitak, Jiroat Sangrattanaprasert, Chatchai Ngernsaengsaruay, Umpawa Pinruan. 2025. Calathella sirindhorniae (Agaricales, Basidiomycota), A New Cyphelloid Fungus from Thailand.  Tropical Natural History. Suppl. 8;  460-471. DOI: doi.org/10.58837/tnh.25.8.267354 

 𝐶𝑎𝑙𝑎𝑡ℎ𝑒𝑙𝑙𝑎 𝑠𝑖𝑟𝑖𝑛𝑑ℎ𝑜𝑟𝑛𝑖𝑎𝑒 หรือ เห็ดโกงกางจิ๋วสิรินธร

 ตั้งชื่อชนิดตามพระนามาภิไธยของสมเด็จพระกนิษฐาธิราชเจ้า กรมสมเด็จพระเทพรัตนราชสุดาฯ สยามบรมราชกุมารี เพื่อถวายพระเกียรติเนื่องในโอกาสเฉลิมฉลอง 70 พรรษา และในฐานะเจ้าฟ้านักอนุกรมวิธานและความหลากหลายทางชีวภาพแห่งประเทศไทย โดยเห็ดโกงกางจิ๋วสิรินธรค้นพบที่สวนพฤษศาสตร์นานาชาติรัชกาลที่ 9 จังหวัดจันทบุรี และโครงการศึกษาวิจัยและพัฒนาสิ่งแวดล้อมแหลมผักเบี้ย อันเนื่องมาจากพระราชดำริ บ้านแหลม จังหวัดเพชรบุรี 

[Entomology • 2025] Debaratania bellula • Debaratania Pinkaew (Lepidoptera: Tortricidae: Olethreutinae), A New gorgeous Genus from Thailand with Description of its type species

 

Debaratania bellula

Pinkaew, 2025

 

ผีเสื้อกลางคืนเทพรัตน  ||  Tropical Natural History. Suppl. 8; 

DOI: doi.org/10.58837/tnh.25.8.266747

Abstract

Debaratania gen. nov. is described from Thailand, with Debaratania bellula sp. nov. designated as the type species. The new genus is characterized by its colorful forewing pattern, sexual dimorphism in the shape of both the fore- and the hindwing, and distinctive male hindwing venation, where M3 and CuA1 are short-stalked both proximally and distally, with three distinct anal veins. The male genitalia feature a prominent leaf-like uncus and a large tubular phallus with long, narrow cornuti. In the female genitalia, a conspicuous sclerotized plate with a strongly developed thorn-like process is present at the anterior end of ductus bursae. Living and pinned specimens, wing venation, and genitalia are illustrated. Structural features support placement in the tribe Enarmoniini.

Keywords: Enarmoniini, taxonomy, national park, wildlife sanctuary

Living specimens of Debaratania bellula sp. nov. (holotype).
 A.  dorsal view. B. lateral view.

Adults of Debaratania bellula sp. nov.
 A. male adult, holotype. B. female adult, paratype (np5520).

(scale bars =2 mm)

Family Tortricidae Latreille, 1803

Subfamily Olethreutinae Walsingham, 1895

Tribe Enarmoniini Diakonoff, 1953

Genus Debaratania gen.nov. 

 

Debaratania bellula Pinkaew sp. nov.

Diagnosis.– This new genus is superficially similar to some brightly colored species of Thaumatographa (Hilarographini), and Anthozela (Enarmoniini). However, it is easily distinguished by the sexual dimorphism in the shape of the forewing and hindwing, with the male forewing slightly more subtriangular

Etymology.–The generic name “Debaratania” is a part of name for Her Royal Highness Princess Maha Chakri Sirindhorn [Princess Debaratana Rajasuda].

Nantasak Pinkaew. 2025. Debaratania Pinkaew (Lepidoptera: Tortricidae: Olethreutinae), A New gorgeous Genus from Thailand with Description of its type species. Tropical Natural History. Supplement 8; 140-148. DOI: doi.org/10.58837/tnh.25.8.266747 [2025-10-14]

 

[Phycology • 2025] Rhodogorgon truncata (Rhodophyta: Rhodogorgonales) • A New Red Alga from the west coast of Thailand

Rhodogorgon truncata Muangmai & Draisma,

in Muangmai, Draisma, Gabriel, Schils, Kato et Yoon, 2025. 

DOI: doi.org/10.1080/00318884.2025.2491144 

ABSTRACT

The recognition of new species is fundamental to understanding biodiversity and biogeography. Through an integrative taxonomic approach, combining morphological and multilocus molecular data, a new red algal species, Rhodogorgon truncata sp. nov. is described from the west coast of Thailand. The new species differs from the two previously described species in the genus, i.e. R. ramosissima and R. flagellifera, by unique morphological features including compressed and stocky thalli with determinate short branchlets along the upper portion, giving it a truncated and verrucose appearance. Our morphological observations revealed the smaller size, compressed shape, and truncated apices of R. truncata in contrast to the cylindrical, irregularly branched thalli of R. ramosissima and R. flagellifera. Phylogenetic analyses suggest that R. truncata is more closely related to undescribed Rhodogorgon specimens from the Indo-Pacific than to the Caribbean R. ramosissima. The discovery of this new species expands the known diversity within the genus Rhodogorgon and suggests greater, as yet undiscovered, species diversity among poorly studied red algae in the Indo-Pacific Ocean.

KEYWORDS: Andaman Sea, New species, Reef algae, Seaweed, Taxonomy

Rhodogorgon truncata sp. nov. Muangmai & Draisma

 

Narongrit Muangmai, Stefano G. A. Draisma, Daniela Gabriel, Tom Schils,Aki Kato and Hwan Su Yoon. 2025. Rhodogorgon truncata sp. nov. (Rhodogorgonales, Rhodophyta), A New red alga from the west coast of Thailand. Phycologia. DOI: doi.org/10.1080/00318884.2025.2491144  [28 Apr 2025]

ค้นพบสาหร่ายหินปูนสีแดงชนิดใหม่ของโลกจากชายฝั่งทะเลอันดามัน 

จังหวัดภูเก็ตและพังงา ประเทศไทย 

.

รองศาสตราจารย์ ดร.ณรงค์ฤทธิ์ เมืองใหม่ อาจารย์ประจำภาควิชาชีววิทยาประมง ร่วมกับ Dr. Stefano Draisma สถานีวิจัยความเป็นเลิศความหลากหลายทางชีวภาพแห่งคาบสมุทรไทย มหาวิทยาลัยสงขลานครินทร์ Dr. Daniela Gabriel, University of the Azores สาธารณรัฐโปรตุเกส Prof. Tom Schils, University of Guam สหรัฐอเมริกา Prof. Aki Kato, Hiroshima University, ประเทศญี่ปุ่น และ Prof. Hwan Su Yoon, Sungkyunkwan University, สาธารณรัฐเกาหลี

.

ค้นพบและตั้งชื่อสาหร่ายหินปูนสีแดงชนิดใหม่ของโลก Rhodogorgon truncata sp. nov. Muangmai & Draisma จากชายฝั่งทะเลอันดามัน จังหวัดภูเก็ตและจังหวัดพังงา 

.

สาหร่ายสีแดงหินปูนชนิดใหม่นี้มีลักษณะคล้ายกัลปังหา (gorgonians) และพบแพร่กระจายบริเวณแนวปะการังทางชายฝั่งทะเลอันดามัน พบได้ที่ระดับความลึกตั้งแต่ 1 เมตร จนถึง 6 เมตร งานวิจัยนี้เป็นส่วนหนึ่งของการสำรวจความหลากหลายทางชีวภาพของสาหร่ายทะเลบริเวณชายฝั่งทะเลของประเทศไทย