Alcyonohippolyte, Marin, Okuno & Chan, 2011

Marin, Ivan & Chan, Tin-Yam, 2012, Description of Alcyonohippolyte brachycarpus sp. nov., a further new hippolytid shrimp (Decapoda, Caridea, Hippolytidae) associated with soft coral from Taiwan, with the key to the species of the genus Alcyonohippolyte Marin,, Zootaxa 3534, pp. 53-60 : 59-60

Key to the species of the genus Alcyonohippolyte (females only)

1a. Carapace gibbous............................................................................ A. dossena

1b. Carapace normal, not gibbous............................................................................ 2

2a. Rostrum overreaching antennular peduncle; second segment of carpus of pereiopod II slender, about twice longer than wide.......................................................................................... A. tenuicarpus

2b. Rostrum not reaching distal margin of antennular peduncle; second segment of carpus of pereiopod II short, about as long as wide................................................................................................ 3

3a. Pereiopod II with proximal carpal segment distinctly longer than distal segment.................................... 4

3b. Pereiopod II with proximal carpal segment almost same long as distal segment.................................... 5

4a. Carapace covered dorsally with more than 3 tufts of setae; propodus of pereiopod III with well developed distoventral spine............................................................................................. A. maculata

4b. Carapace mostly naked, rarely with 1 tuft of setae dorsally; propodus of pereiopod III without or with minute distoventral spine........................................................................................ A. commensalis

5a. Carapace with single tuft of setae dorsally; carapace and abdominal pleura distributed with brown and white wide bands; associated with alcyoniid coral........................................................ A. brachycarpus sp. nov.

5b. Carapace naked; carapace and abdominal pleura mostly white; associated with organ pipe coral Tubipora sp. ........................................................................................................ A. tubiporae