Vol. 62, 2023
Revision of the Genus Lacunipotamon Dai, Song, He, Cao,
Xu & Zhong, 1975 (Crustacea: Decapoda: Brachyura: Potamidae), with
Descriptions of Eight New Species from Vietnam
K. L. Ng1,*, Zhi Wan Tan1,2, and Van Tri Ngo3
Kong Chian Natural History Museum, Faculty of Science, National
University of Singapore, 2 Conservatory Drive, Singapore 117377,
Republic of Singapore. *Correspondence: E-mail: email@example.com (Ng)
2Department of Biological Sciences, Faculty of
Science, National University of Singapore, 16 Science Drive 4,
Singapore 117558, Republic of Singapore. E-mail: firstname.lastname@example.org (Tan)
3National Key Laboratory, Institute of Tropical
Biology, Vietnamese Academy of Sciences and Technology, 9/621 Hanoi
Highway, Thu Duc City, Ho Chi Minh City, Vietnam. E-mail:
(Received 22 November 2022 / Accepted
30 January 2023 / Published 22 May 2023)
Communicated by Benny K.K. Chan
The taxonomy of the potamid genus Lacunipotamon Dai, Song, He, Cao, Xu & Zhong, 1975, is revised. Three species are known from southern China: L. albusorbitum Dai, Song, He, Cao, Xu & Zhong, 1975 (type species); L. yuanshi Huang, Shih & Ahyong, 2020; and L. cymatile Huang, Shih & Ahyong, 2020. Eight new species are here described from northern Vietnam: L. globus, L. panda, L. contrastum, L. sublividum, L. mimicum, L. thuanchau, L. pectum and L. purpureum.
This is the first record of the genus in Vietnam, with all the new
species obtained from karst formations. The species are differentiated
by the characters of carapace shape, anterolateral armature, posterior
margin of the epistome, male sternopleonal cavity, chelipeds,
ambulatory legs, male thoracic sternum, male pleon, and structures of
the male first gonopodsand vulvae.
Key words: Potamoidea, New
genus record, Rediagnosis, Descriptions of new species, Taxonomy,
China, Vietnam, Karst.
Citation: Ng PKL, Tan ZW, Ngo VT. 2023.
Revision of the genus Lacunipotamon
Dai, Song, He, Cao, Xu & Zhong, 1975 (Crustacea: Decapoda:
Brachyura: Potamidae), with descriptions of eight new species from
Vietnam. Zool Stud 62:20.doi:10.6620/ZS.2023.62-20.