New record and dietary ecology of a poorly-known treefrog, Yu, Hui, Hou, Wu, Rao & Yang, 2019 (Anura, Rhacophoridae) in Vietnam.

Background: The White-lipped Treefrog Yu, Hui, Hou, Wu, Rao & Yang, 2019 was previously confused with (Blyth, 1852). Records of from Yunnan (China), Vietnam and Thailand were recognised as a misidentification and this taxon was subsequently described as a new species, based on morphological and molecular evidence. This species is currently known from southern China, Thailand, Laos and Vietnam.

New records and an updated list of reptiles from Thanh Hoa Province, Vietnam.

Background: Thanh Hoa Province is located in North Central Vietnam and the Province contains a large area of 393,361.33 hectares of natural forest. A complexity of landforms has given this Province a high level of biodiversity potential.

A new species of Smith 1925 (Anura, Megophryidae) from Lai Chau Province, Vietnam.

Background: The genus (Anura, Megophryidae) was originally described, based on the type species from Sarawak (Malaysia), Smith. The taxa in the group were previously classified into different genera, i.e, Liu; Dubois; Delorme, Dubois, Grosjean & Ohler; and Dubois, Grosjean, Ohler, Adler & Zhao.

 (Rubiaceae), a new species from south-western China and northern Vietnam.

, a new species from south-western China and northern Vietnam, is described and illustrated. The new species is characterised by the glabrous surfaces on almost all plant parts, congested inflorescences and broad-ovate to ovate bracts 9-22 × 4-11 mm. It morphologically differs from the closest species, , mainly in most plant parts being glabrous, bracts broad-ovate to ovate, apex acute or sometimes obtuse, corollas inside with a ring of white hairs at the middle and anthers inserted near the middle in long-styled flowers.

Description of sp. nov., a new hard tick species (Acari, Ixodidae) collected from mouse-eared bats (Vespertilionidae, ) in Vietnam.

Historically, for more than one and a half centuries, only one so-called "long-legged bat tick" species, i.e., Koch was known to science.

Two new species of genus Thorne, 1939 (Nematoda, Dorylaimidae) from natural parks of Vietnam with an identification key to the species with a medium-sized odontostyle.

Thorne, 1939 is a large and diverse dorylaimid genus with complicated taxonomy. Two new species, and from natural habitats in Vietnam were characterised both morphologically and molecularly (18S rDNA and 28 rDNA), and line drawings and microphotographs are provided. Phylogenetic analyses showed that the new species clustered together with Thorne, 1939, the type species of the genus.

 (Poaceae, Bambusoideae), a new species from southern Vietnam.

from Vietnam is described and illustrated. It is found in southern Vietnam, where it occurs at an elevation of 1400-1500 m in Voi Mountain, Duc Trong District, Lam Dong Province. This new species is distinguished from a similar species, , by culm nodes with a thick swollen patella, culm leaf blades erect, auricles conspicuous, margins bearing long hairs, palea dorsal view showing rachilla extension and rudimentary floret at the apex and lodicules purple gradually towards the top.

Taxonomic relationship between Orlov & Ho, 2007 and Pham, Sung, Pham, Le, Zieger & Nguyen, 2019, with first record of from China (Anura, Ranidae).

Background: Based on the examination of specimens of Orlov & Ho, 2007 and Pham, Sung, Pham, Le, Zieger & Nguyen, 2019, we found that there is no significant morphological difference between them. Phylogenetic analysis also showed that and belong to the same taxon. In addition, we discovered the distribution of in China.

 (Poaceae, Bambusoideae), a newly-recorded bamboo genus for China and Vietnam, with new taxa and a re-interpretation of flowering structures.

and are closely-related genera for which 'inflorescence' structures were incompletely understood and difficult to reconcile. After re-examining the inflorescence morphology, the so-called 'spikelets' of both genera as described should instead be recognised as pseudospikelets with mostly inactive axillary buds. The new bamboo taxa, comprising two varieties of a new species, are placed in , representing a new genus record for China and Vietnam.

Characterisation of the (Jack) Meisn (Lauraceae) transcriptome using Illumina paired-end sequencing and EST-SSR markers development for population genetics.

is an endemic and endangered species with significant economic and ecological value in Vietnam. A better understanding of the genetic architecture of the species will be useful when planning management and conservation. We aimed to characterize the transcriptome of , develop novel molecular markers, and assess the genetic variability of the species.

Predictive ecological niche model for (Jack) Meisn. (Lauraceae) from Last Glacial Maximum to future in Vietnam.

(Jack) Meisn. is a tree in genus that has been facing global threats due to forest degradation and habitat fragmentation. Many recent studies aim to describe habitats and assess population and species genetic diversity for species conservation by expanding afforestation models for this species.

Description of sp. nov. from Vietnam and a key to species in the group (Hymenoptera, Crabronidae).

Background: Latreille, 1796 (Hymenoptera, Crabronidae) consists of 633 known species worldwide and the genus is divided into numerous species groups. In Vietnam, 19 species of have been recorded to date. In this study, a new species, Pham and Antropov sp.

Bat diversity in the Cuc Phuong National Park, Vietnam - Results from VIETBIO field training and annotated species list.

Background: Biodiversity surveys are essential for both academic research and conservation. Integrative approaches that combine morphological, genetic and acoustic aspects for species identification can provide reliable information in taxonomy and evolution. This is especially relevant for those groups with a high degree of cryptic diversity such as bats.

The solitary wasp genus from Vietnam, with descriptions of two new species (Hymenoptera, Vespidae, Eumeninae).

New data are presented for the potter wasp genus van der Vecht (Eumeninae, Odynerini) occurring in Vietnam. Two species are described as new to science: and van der Vecht is synonymized with (de Saussure); the male genitalia of this species are described for the first time. An updated key is presented to all species of the genus.

A new species of (Araceae) from Vietnam.

is described as a new species endemic to Vietnam. It is unique in the genus in having an oblong-elliptic spathe limb with an obtuse apex and yellowish-greenish filiform staminodes with a down-curved acumen. The ecology, distribution and assessment of the conservation status of the new taxon, as well as a key to all known species in Vietnam, are provided.

Southbound - the southernmost record of (Amphibia, Caudata, Salamandridae) from the Central Highlands of Vietnam represents a new species.

A new species of the genus is described from Ngoc Linh Mountain, Kon Tum Province, in the Central Highlands of Vietnam based on integrative taxonomy, namely by combining molecular and morphological evidence. differs from all other congeners based on morphological data, allopatric distribution, and molecular divergence. In terms of genetic divergence, distinctly differs from the sister species (6.

The millipede family Polydesmidae Leach, 1816 (Diplopoda, Polydesmida) from Vietnam, with a description of a new cavernicolous species.

The millipede family Polydesmidae Leach, 1816 is reviewed in the scope of the Vietnamese fauna. The distribution of the species, Nguyen, 2009 is extended northward to Ha Giang Province. A new cavernicolous polydesmid, , is described from two caves in northwestern Vietnam, representing the first record of the genus from Vietnam.

Integrative taxonomic analyses reveal first country records of Chen, Peng, Liu, Huang, Liao & Mo, 2022 and (Boulenger, 1899) (Anura, Dicroglossidae, Ranidae) from Vietnam.

Background: was recently discovered from Guangxi Province of China. is a widespread species in southern China, including Hong Kong and Taiwan. Both species are expected to be found in the border areas between Vietnam and China; however, no records of these frogs have been documented from Vietnam so far.

Description of Aporcella daklakensis sp. n. (Nematoda: Dorylaimida: Aporcelaimidae), associated with coffee plantations in Central Highland of Vietnam.

A new species of the genus Aporcella, collected in replanted coffee orchards in Central Highland of Vietnam, is described and illustrated. Aporcella daklakensis sp. n.

A new species of (Malvaceae) from Vietnam.

A new species of from Vietnam - - is described, illustrated, and compared with the similar . differs from by the length of the petiole (7.0-9.

 (Rubiaceae): A new species from the central highlands of Vietnam.

A new species of L. (Rubiaceae), B.H.

A new species of from a Vietnamese cave, with remarkable secondary sexual characters in males (Callipodida, Paracortinidae).

A new millipede species, , is described from a cave in Cao Bang Province, northern Vietnam. The new species is diagnosed by having an extraordinarily long projection on the head of males, reduced eyes, a gonocoxite with two processes, a long and slender gonotelopodite with two long, clavate prefemoroidal processes densely covered with long macrosetae apically, and with a distal, reverse, short spine on mesal side, and a rather sinuous distal part of the telopodite. This is the third species of the genus that is known from Vietnam.

New record and dietary ecology of a poorly known frog, Wang, Li, Du, Hou & Yu, 2022 (Amphibia, Anura, Ranidae), from Ha Giang Province, Vietnam.

Background: The Hekou Torrent Frog () was recently discovered from southern China and northern Vietnam in 2022. The knowledge about natural history and feeding ecology of this species is virtually lacking.

New Information: Based on our recent fieldwork in northern Vietnam, we report a new population of from Ha Giang Province.