New records of Isonychia formosana,Prosopistoma annamense and Prosopistoma sinense (Ephemeroptera) from Thailand

We describe the distribution and habitats of three new recorded mayfly species from Thailand: Isonychia formosana (Isonychidae), Prosopistoma annamense (Prosopistomatidae) and P. sinense. This is a new record from Thailand, reporting these species for the first time. A key to known larvae of Thai Prosopistoma species is provided.     

Hoya somadeeae sp. nov. (Apocynaceae,Asclepiadoideae) Thailand and lectotypification of Hoya wrayi

A new species from evergreen montane forests of Thailand, Hoya somadeeae Rodda & Simonsson is here described and illustrated. The new species may be superficially confused with the Peninsular Malaysia endemic H. wrayi King & Gamble, but is clearly separated from it by the very elongated peduncles, up to 20 cm long, the revolute corollas, and outer processes of corona lobes with a membranaceous basal appendage. Morphological affinities between the new species and other Hoya species from Thailand and neighbouring Myanmar and Peninsular Malaysia are discussed.     

A New Species of Streptocephalus Fairy Shrimp (Crustacea,Anostraca) with Tetrahedral Cysts from Central Thailand

A new species of fairy shrimp, Streptocephalus siamensis n. sp., is described from five temporary pools in Suphan Buri and Kanchana Buri Provinces, central Thailand. It sometimes co‐occurs with its congener, S. sirindhornae . This new species belongs to the subgenus Parastreptocephalus which is defined by bearing tetrahedral cysts. This is the third anostracan species reported from Thailand. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)     

Seven new species of Miliusa (Annonaceae) from Thailand

Seven new species of the genus Miliusa are described from Thailand (M. fragrans, M. hirsuta, M. intermedia, M. nakhonsiana, M. sessilis, M. thailandica, and M. umpangensis). A key to the 19 species of Miliusa in Thailand is provided. In addition, the complete taxonomic nomenclature of all known species of Miliusa in Thailand is given, with several new proposed synonyms. The new as well as the known species of Miliusa in Thailand are classified into four morphological groups on the basis of a combination of flower and/or inflorescence position and inner petal morphology proposed earlier.     

Cory bas ecarinatus sp, now (Orchidaceae) from Thailand

A new species of the genus Corybas is proposed. It is the first record of the genus from Thailand.     

A newHalophytophthora species,H. porrigovesica, from subtropical and tropical mangroves

A new oomycete was found from intertidal fallen leaves of mangroves in Japan and Thailand and is described here asHalophytophthora porrigovesica. This species is characterized by having an epapillate, ovate zoosporangium with a lens-shaped dehiscence plug-like material at the apex, and by forming an expanding long cylindrical vesicle prior to zoospore release. A key to 14 species and 2 varieties ofHalophytophthora including the new species is proposed. The subtropical (Iriomote is., Japan) strains and tropical (Thailand) strains were different in physiological properties and especially in the asexual reproduction. The subtropical strains showed a lower optimal temperature and wider range of suitable temperature and salinity for zoosporangium formation, whereas the tropical strains showed a higher optimal temperature and narrower range of temperature and salinity. These differences are explained as adaptations of the strains to the environmental conditions of their respective habitats. From the subtropical mangroves, six strains of the new species have been isolated only from submerged leaves ofSonneratia alba, while several strains have been isolated from tropical mangroves from the leaves of three species of mangrove trees,S. alba, Bruguiera gymnorrhiza andAvicennia alba. This indicates a change of taxon selectivity (host specificity) with the geographical distribution.     

A new genus, Thailepidonia gen. nov., based on T. yoshiyasui sp. nov. (Lepidoptera, Lecithoceridae) from Thailand

A new genus, Thailepidonia gen. nov. of the family Lecithoceridae, is described based on a new species, T. yoshiyasui sp. nov. from Thailand.     

Four new species, a new variety, and a status change in Argostemma (Rubiaceae) from Thailand

Four new species of Argostemma , all endemic to Thailand are described: A. thaithongae , restricted to northern Thailand; A. monophyllum , rather widely distributed in the easern half of Thailand: A. puffii and A. routundicalyx , both endemic to peninsular Thailand. Var. variabile is a new variety of the peninsular Thailand, species A. lobulatum. A. setosum , previously thought to be an endemic species of peninsular Thailand, is now considered to be a subspecies of A. laeve (Malay peninsula and Sumatra): A. laeve subsp. setosum , stat. nov.     

Piper viridescens sp. nov. (Piperaceae) from Thailand

Piper viridescens sp. nov. is proposed based on material from northern Thailand. The new species is described and illustrated, resulting from a revision of the genus in Thailand. The new species is most closely related to P. boehmeriifolium (Miq.) C. DC. A table comparing diagnostic features of P. viridescens, P. boehmeriifolium and P. retrofractum is provided.     

New species and a new record of Cycas (Cycadaceae) from Thailand

Two newCycas species from Thailand are here described.C. petraea andC. elephantipes. A noteworthy extensions of the range ofC. macrocarpa into southeastern Thailand is recorded. New taxa are illustrated, distributions of the new taxa are mapped, and a key to the species ofCycas in Thailand is provided.     

Gymnemopsis phuwuaensis (Apocynaceae,Asclepiadoideae), a new species from northeastern Thailand

A new species, Gymnemopsis phuwuaensis A. Kidyoo, has been discovered in northeastern Thailand and is here described and illustrated. An identification key to all species of the genus is provided. Photographs and a diagnostic comparison with the morphologically similar species G. calcicola Kerr, are also provided. Gymnemopsis phuwuaensis displays clear differences in form and color of the corolla as well as in size of bract and flower. A lectotype for Gymnemopsis pierrei is also designated.     

Dactylospora mangrovei sp. nov. (Discomycetes, ascomycota) from mangrove wood

A new speciesDactylospora mangrovei is described and illustrated and compared withD. haliotrepha andD. canariensis, all marine inhabiting species.Dactylospora haliotrepha andD. mangrovei are tropical/sub-tropical mangrove species collected in Hong Kong, Malaysia, Taiwan and Thailand, whileD. canariensis was described from temperate waters. A map of the geographical distribution of the three marineDactylospora species is presented.     

<Emphasis Type="Italic">Phuphanochloa,</Emphasis> a new bamboo genus (<Emphasis Type="Italic">Poaceae</Emphasis>: <Emphasis Type="Italic">Bambusoideae</Emphasis>) from Thailand

Summary  A new monotypic bamboo genus Phuphanochloa (Poaceae: Bambusoideae) from north-eastern Thailand is described, together with a new species, P. speciosa.     

Ostrincola humesi sp. nov., a myicolid copepod (Poecilostomatoida) parasitic in rock oysters cultured in the Gulf of Thailand

A new species of poecilostomatoid copepod, Ostrincola humesi (Myicolidae), is described, based on specimens collected from the mantle cavity of the rock oyster, Saccostrea cucullata (Born), cultured in the Gulf of Thailand. A close comparison was made between the new species and Ostrincola koe Tanaka with which the new species was previously confused. A key to the nine species of Ostrincola is provided.     

Primula zhui (Primulaceae) sp. nov. from south Yunnan,southwest China

Primula zhui a new species of Primula endemic to the Yunnan Province, China, is described and illustrated. It is morphologically similar to P. intanoensis from Thailand, and P. calyptrata from southeast Yunnan, affiliated to Primula sect. Carolinella (Hemsl.) Pax. However, it is easily distinguished from the Thailand species by its longer corolla tube and distylous flowers, and it differs from the Chinese species by its leaf ovate to ovate‐elliptic blade and distylous flowers.     

Placobdelloides tridens sp. n., a new species of glossiphoniid leech (Hirudinea: Rhynchobdellida) found feeding on captive Orlitia borneensis in Thailand,and an update to the host distribution of P. siamensis

A new glossiphoniid leech species, Placobdelloides tridens sp. n., is discovered on the Malayan Giant Turtle (Orlitia borneensis) at the Nakhon Ratchasima Zoo in Thailand. The morphological study of this new species revealed that it is distinguished from P. siamensis, a turtle leech species that can be found commonly in Thailand. Placobdelloides tridens presented the following diagnostic morphological characteristics: a pear-shaped and triannulate body, well-developed rod-like papillae on the dorsal surface, smooth posterior and anterior suckers with nominal pits inside, a single pair of dark contiguous eyes, light yellow-brown to greenish dorsal color, absence of median line, male and female gonopore separated by a single annulus and a unique trident shape at the tip of the crop ceca. The phylogenetic relationships of P. tridens sp. n., was clarified, and shown to be a sister clade to the P. siamensis and P. sirikanchanae clade. Furthermore, this is a new host record for P. siamensis, which was found on O. borneensis, Batagur affinis and B. borneoensis in the Khao Kheow Open Zoo, Chonburi, Thailand.

     

Two fungi associated with necrotic leaflets of areca palms (Areca catechu)

Information on fungi associated with necrotic leaflets of exotic palms in Thailand is scanty, as previous studies were mainly focused on decaying fronds. This study provides some information regarding fungi associated with necrotic leaflets of exotic palms in Thailand. Specimens in this work were collected from several locations in Chiang Mai province, including natural and planted areas. One new species, Cercospora arecacearum on areca palm (Areca catechu), is described and illustrated. An ITS sequence data analysis confirms the separation of the new Cercospora species from related taxa. Another species, Neorehmia arecae, hitherto only known from areca palm, is newly recorded for Thailand. Furthermore, Wallichia siamensis is a new host for this species.