Engyprosopon Gunther 1862
Creators: name: Amaoka, Kunio
name: Ho, Hsuan-Ching
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Actinopterygii
Pleuronectiformes
Bothidae
Engyprosopon

description: Key to species of Engyprosopon found in waters around Taiwan
1a. Gill rakers without spinules on their inside edges; ocular-side lower jaw 2.0– 2.5 in HL.............................. 2
1b. Gill rakers with spinules on their inside edges; ocular-side lower jaw 1.5–2.0 in HL................................. 7
2a. Distal half of caudal fin with a pair of large, distinct. blackish blotches........................................... 3
2b. Distal half of caudal fin without blackish blotches............................................................ 5
3a. Gill rakers 0 + 13 (0–6 + 13–18 in comparative specimens)............................................ E. xystrias
3b. Gill rakers 0–3 + 5–11.................................................................................. 4
4a. Body ovate, its depth 1.63–1.86 in SL; ocular-side pectoral-fin rays not filamentous, usually shorter than head length.............................................................................................. E. grandisquama
4b. Body rather elongate, its depth 1.87–2.03 in SL; ocular-side pectoral-fin rays filamentous, longer than head length................................................................................................. E. multisquama
5a. Interorbital width very narrow, its width 7.8–12.5 in HL; scales 50–51 in lateral line; gill rakers 0 + 6–8.......... E. mogkii
5b. Interorbital width very wide, its width 1.7–3.9 in HL; scales 43–48 in lateral line; gill rakers 0–3 + 8–11................ 6
6a. Small eyes placed away from head margin (Fig. 8), upper eye diameter 3.1–4.0 in HL; depth of caudal peduncle 1.8–2.1 in HL; body depth 1.8–2.1 in SL.................................................................. E. maldivense
6b. Large eyes placed near to head margin (Fig. 10), upper eye diameter 2.7–2.9 in HL; depth of caudal peduncle 2.2–2.3 in HL; body depth ~ 1.7 in SL............................................................... E. brevifrontale sp. nov.
7a. Scales 37–40 in lateral line; ocular-side pelvic-fin rays elongate in males, 1.7–1.8 in HL; fin membrane of ocular-side pelvic fin with many black spots in males.............................................................. E. longipelvis
7b. Scales 46–52 in lateral line; ocular-side pelvic-fin rays not elongate in either sex, 1.9–3.0 in HL; fin membrane of ocular-side pelvic fin without many black spots in either sex............................................................. 8
8a. Eyes separated by narrow, concave interorbital space in both sexes; eyes large, upper eye diameter 3.0– 3.5 in HL; anterior teeth on upper jaw not enlarged; blind side of body dark in males.................................. E. mozambiquense
8b. Eyes nearly contiguous, separated by extremely narrow interorbital space, almost filled entirely by a bony ridge in both sexes; eyes small, upper eye diameter 3.8–4.3 in HL; anterior teeth on upper jaw enlarged, canine-like; blind side of body not dark in either sex........................................................................ E. parvipectorale sp. nov.
description: Published as part of Amaoka, Kunio & Ho, Hsuan-Ching, 2018, Review of the genus Engyprosopon Günther, 1862 (Pleuronectiformes: Bothidae) from waters off Taiwan, with descriptions of two new species, pp. 449-481 in Zootaxa 4413 (3) on pages 450-451, DOI: 10.11646/zootaxa.4413.3.2, http://zenodo.org/record/1227791