Ampeliscidae

Valério-Berardo, Maria Teresa, 2008, Six new species of deep water Ampeliscidae (Crustacea: Amphipoda) from Brazilian Coast, Zootaxa 1844, pp. 1-24 : 2-3

Key to the species of the family Ampeliscidae recorded from the Brazilian coast

(modified from Valério-Berardo, 2007)

1 Pereopod 7 anterior margin of basal lobe lacking setae near its junction with merus, dacylyl not spine- like.....................................................................................................................................................................2

- Pereopod 7 anterior margin of basal lobe bearing setae near junction with merus, spine- like dactlyl....19

2 Head with a rostrum or with a small projection on anterodorsal corner......................................................3

- Head without rostrum, anterodistal corner transverse.................................................................................5

3 Anterodorsal corner reaching the end of peduncle article 1 of antenna 1; uropod 3 rami broad ................. .................................................................................................................. A. paria Barnard & Agard, 1986

- Head with a small projection on anterodorsal corner, not reaching the middle of peduncle article 1 of antenna 1; uropod 3 rami lanceloate............................................................................................................4

4 Corneal lenses present; uropod 2 with 1 long apical robust seta on outer ramus; telson distal margin pointed ................................................................................................................................ A. anae sp. nov.

- Corneal lenses absent; uropod 2 without apical seta on outer ramus; telson distal margin blunt ................. ......................................................................................................................................... A. minuta sp. nov.

5 Head strongly narrow anteriorly, anteroventral margin paralell to anterodorsal margin............................6

- Head slightly narrow anteriorly, ventral margin oblique.............................................................................9

6 Posteroventral corner of epimeron 3 without spine.....................................................................................7

- Posteroventral corner of epimeron 3 with spine..........................................................................................8

7 Antenna 1 shorter than antenna 2 peduncle; uropod 3 rami very broad, distal margin rounded; urosomite 1 dorsal carina pointed ............................................... A. flabellicaudata Valério-Berardo & Wakabara, 2006

- Antenna 1 subequal in length to antenna 2 peduncle; uropod 3 rami foliaceous; urosomite 1 dorsal carina saddle-shaped ................................................................................... A. meridionalis Valério-Berardo, 2007

8 Pereopod 7 ventral margin of basis nearly transverse (in larger specimens can be rounded); urosomite 1 dorsal carina produced into a rounded process; posterior margin of epimeron 3 not bisinuate ................... .............................................................................................................................. A. cristata Holmes, 1908

- Pereopod 7 ventral margin of basis rounded; urosomite 1 produced into an acute process; posterior margin of epimeron 3 bisinuate ............................................................................. A. brevisimulata Barnard, 1954

9 Uropod 3 with broad rami .......................................................................................... A. wakabarae sp. nov

- Uropod 3 with lanceolate rami...................................................................................................................10

10 Pereopod 7 merus posterior margin strongly lobed, lobe extending to distal end of carpus or more......11

- Pereopod 7 merus posterior margin weakly lobed, lobe not extending the middle of carpus..................13

11 Epimeron 3 posteroventral corner without spine; telson distal margin blunt ................................................ .......................................................................................... A. moreirai Valério-Berardo & Wakabara, 2006

- Epimeron 3 posteroventral corner with 1 spine; telson distal margin pointed..........................................12

12 Pereopod 7 propodus longer than twice dactylus length; uropod 2 both rami with 1 long apical robust seta................................................................................................... A. longipropoda Valério-Berardo, 2007

- Pereopod 7 propodus shorter than twice dactylus length; uropod 2 outer ramus with 1 long apical robust setae................................................................................................................... A. pugetica Stimpson, 1864

13 Pereopod 7 carpus with a notch on anterior margin.................................................................................14

- Pereopod 7 carpus without a notch on anterior margin.............................................................................16

14 Antenna 2 longer than body length; pereopod 7 propodus twice longer than carpus; uropod 3 rami broad .................................................................................................................. A. youngi Valério-Berardo, 2007

- Antenna 2 shorter than body length; pereopod 7 propodus subequal in length to carpus; uropod 3 rami slender........................................................................................................................................................15

15 Antenna 1 reaching middle of peduncular article 5 of antenna 2; urosomite 1 dorsal carina raised into a

lens-shaped process; inner ramus of uropod 3 distally uncinate ........................... A. romigi Barnard, 1954 - Antenna 1 reaching end of peduncular article 4 of antenna 2; urosomite 1 dorsal carina rounded and without lens-shaped process; inner ramus of uropod 3 not distally uncinate ...................................................... ............................................................................................... A. subtropicalis Valério-Berardo et al., 2005 16 Antenna 1 subequal in length to peduncle of antenna 2; uropod 3 outer margin of inner ramus nacked, outer ramus notched at tip ........................................................... A. rodriguesi Valério-Berardo et al., 2005

- Antenna 1 shorter than peduncle of antenna 2; uropod 3 outer margin of inner ramus with 1 stout robust seta or more, outer ramus not notched at tip..............................................................................................17

17 Uropod 3 inner ramus with only 1 robust seta on outer margin ................................. A. campensis sp. nov.

- Uropod 3 inner ramus with more than 3 robust setae on outer margin....................................................18

18 Uropod 1 peduncle with 1 large robust seta on distal margin and outer ramus lacking marginal robust setae; pereopod 7 merus weakly poduced posterodistally ........................................................ A . aff. lobata

- Uropod 1 peduncle without 1 large robust seta on distal margin and outer ramus with marginal robust setae; pereopod 7 merus not produced posterodistally ........................ A. burkey Barnard & Thomas, 1989

19 Posteroventral lobe of basis on pereopod 7 expanded ventrally, posterior margin oblique ......................... .......................................................................................................................... Byblis bjornbergae sp. nov.

- Posteroventral lobe of basis on pereopod 7 either rectangular or not expanding ventrally, posterior margin parallel .................................................................................................................... Haploops meloi sp. nov.