Araphura

Larsen, Kim, Araújo-Silva, Catarina De L. & Coelho, Petrônio Alves, 2009, Tanaidacea from Brazil. I. The family Tanaellidae Larsen & Wilson, 2002, Zootaxa 2141, pp. 1-19 : 4

Key to the species of Araphura , adult females only.

1 Cheliped propodus with dorsal pointed process at dactylus insertion .................................................. A. spinithenari

– Cheliped propodus without dorsal pointed process at dactylus insertion ................................................................... 2

2 Pleotelson apex with conical process ..................................................................................................... A. cuspirostris

– Pleotelson apex without conical process .................................................................................................................... 3

3 Pereonite 2 elongate, 1.2–1.3 times as long as wide ................................................................................................... 4

– Pereonite 2 as wide as long, or wider ................................................................................................... A. joubinensis

4 Pereonite 6 as wide as long or wider .......................................................................................................................... 5

– Pereonite 6 twice as long as wide ................................................................................................................. A. extensa

5 Pleotelson as wide as long, or wider .......................................................................................................................... 6

– Pleotelson longer than wide ...................................................................................................................................... 10

6 Uropodal exopod process much less than half the length of first endopod article ..................................................... 7

– Uropodal exopod process more than 0.5 times as long as first endopod article ......................................................... 8

7 Pleotelson posterior margin smoothly rounded ......................................................................................... A. filiformis

– Pleotelson posterior margin separates from the lateral margins in a 90 degree angle ................................ A. elongata

8 Pereonites 2–4 clearly longer than pereonite 5 ............................................................................................ A. higginsi

– Pereonites 2–5 more or less subequal ......................................................................................................................... 9

9 Pleotelson nearly twice as wide as long ..................................................................................................... A. breviaria

– Pleotelson nearly as long as wide .......................................................................................................... A. brevimanus

10 Uropodal exopod process clearly more than 0.5 times as long as first endopod article/pseudoarticle ......................... ......................................................................................................................................................... A. parabrevimanus

– Uropodal exopod process 0.5 times as long as first endopod article/pseudoarticle or less ...................................... 11

11 Pleotelson as long as lengths of only two free pleonites combined. Antenna article 4 without trace of fusion line ..... ................................................................................................................................................................. A. curticauda

– Pleotelson longer than three free pleonites combined. Antenna article 4 with clear fusion line .............................. 12

12. Antenna article 4 more than half as long as total antenna length ............................................................. A. rectifrons

– Antenna article 3 less than half as long as total antenna length ............................................................. A. arvedlundi