title: Description of a new montane freshwater crab (Crustacea: Potamidae: Geothelphusa) from northern Taiwan.
abstract: A new freshwater crab is described from a montane area in northern Taiwan based on morphological characters and molecular evidence. Geothelphusa cilan sp. nov., from the Cilan Forest, situated on the boundary of Hsinchu and Yilan (= Ilan) counties, is close to G. monticola Shy, Ng & Yu, 1994, and G. takuan Shy, Ng & Yu, 1994, but can be distinguished by its male first gonopod (G1) and the ratio of thoracic sternites. Molecular evidence from mitochondrial cytochrome oxidase subunit I (COI) also supports the identity of the new species.
authors.affiliation: Department of Aquaculture, National Penghu University, 300 Liu-Ho Road, Magong City, Penghu 880, Taiwan; Email: unknown.
authors.forename: Jhy-Yun
authors.initials: JY
authors.lastname: Shy
authors.affiliation: Department of Life Science, National Chung Hsing University, 250 Kuo Kuang Road, Taichung 402, Taiwan; Email: htshih@dragon.nchu.edu.tw.
authors.forename: Hsi-Te
authors.initials: HT
authors.lastname: Shih
authors.affiliation: Department of Forestry and Natural Resources, National Ilan University, 1, Sec. 1, Shen-Lung Road, Yilan 260, Taiwan; Email: unknown.
authors.forename: Jean-Jay
authors.initials: JJ
authors.lastname: Mao
mesh_terms: D063147:Animal Distribution; D000825:Animal Structures / Q000033:anatomy & histology / Q000254:growth & development; D000818:Animals; D049628:Body Size; D003386:Brachyura / Q000033:anatomy & histology / Q000145:classification* / Q000235:genetics / Q000254:growth & development; D017753:Ecosystem; D005260:Female; D008297:Male; D009929:Organ Size; D010802:Phylogeny; D013624:Taiwan