Paranarthrura

Guerrero-Kommritz, Jürgen, Schmidt, Anja & Brandt, Angelika, 2002, Paranarthrura Hansen, 1913 (Crustacea: Tanaidacea) from the Angola Basin, description of Paranarthrura angolensis n. sp., Zootaxa 116, pp. 1-12 : 12

Key for the Paranarthrura species of the Atlantic ocean

1 Uropod endopod biarticled............................................................................................ 2

1a Uropod endopod monoarticled...................................................................................... 6

2 Cephalothorax as long as pereonite one and two together ............................................ 3

2a Cephalothorax shorter than pereonites one and two together ....................................... 4

3 Pleotelson subheptagonal, pleon longer than pereonite six, strong terminal seta on pro­ podus of pereopod one ................................................................................. P. fortispina

3a Pleotelson subpentagonal, pleon as long as pereonite six, no strong terminal seta on propodus of pereopod one ............................................................................... P. insignis

4 Pleon as long as pereonite six, pleotelson subtriangular, propodus and dactylus of chela blunt ......................................................................................................... P. crassa

4a Pleon shorter than pereonite six, pleotelson different, propodus and dactylus of chela pointed...........................................................................................................................5

5 Pleotelson subpentagonal, chela finger without setae dorsally, labium rounded ............ .................................................................................................................... P. angolensis

5a Pleotelson subhexagonal, chela finger with small seta dorsally, labium pointed ............ ....................................................................................................................... P. lusitanus

6 Cephalothorax shorter than pereonites one and two together ....................................... 7

6a Cephalothorax as long as pereonites one and two together .......................................... 8

7 Pereonite one as long as as wide, pleotelson without lateral projection .......... P. subtilis

7a Pereonite one not as long as wide, pleotelson with lateral projection ........ P. intermedia

8 Pleon as long as pereonite six, dactylus of pereopods four to six with two strong setae in addition to terminal strong seta .................................................................... P. tridens

8a Pleon longer than pereonite six, dactylus without additional strong setae.................... 9

9 Peronite with well developed shoulders, three long terminal setae on propodus of pere­ opod one, maxiliped with scutellum covering the basal part of the endites .................... .................................................................................................................... P. kurchatovi

9a Pereonite without shoulders, no long terminal setae on propodus of pereopod one, maxiliped different ......................................................................................... P. borealis