Liropus Mayer 1890
Creators: name: Alarcón-Ortega, Lucy C.
name: Carballo, José L.
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Amphipoda
Caprellidae
Liropus

description: Key of the World species of Liropus Mayer, 1890
Modified from Guerra-García (2004), Guerra-García et al. (2008), and Guerra-García and Hendrycks (2013).
1a. Pereopods 3 and 4 one-articulate......................................................................... 2
1b. Pereopods 3 and 4 two-articulate............................................... L. azorensis Guerra-García, 2004
2a. Pereopod 5 with three-articulate.......................................................................... 3
2b. Pereopod 5 with two-articulate........................................................................... 5
3a. Body dorsally smooth......................................................... L. nelsonae Guerra-García, 2003
3b. Body with an anterolateral projection in pereonites 2, 3 and 4 in males........................................... 4
4a. Head with two anterolateral acute projections.................................... L. willyi Guerra-García et al., 2018
4b. Head with two tiny dorsal tubercles, near the eyes............................... L. vitucoi Guerra-García et al., 2018
5a. Flagellum of antenna 1 two-articulate..................................................................... 6
5b. Flagellum of antenna 1 more than two-articulate............................................................. 7
6a. Gnathopod 2 propodus bearing a medial deep triangular cleft with roughly serrate margins distally... L. japonicus Mori, 1995
6b. Gnathopod 2 propodus palm providing one large grasping spine................................................ 8
7a. Head smooth......................................................................................... 9
7b. Head with one or two projections........................................................................ 10
8a. Pereonite 4 with a distally dorsal acute projection................................. L. gurui Guerra-García et al., 2015
8b. Pereonites 2, 3, 4 and 5 each with one dorsaldistal projection...................................... L. alarconi n. sp.
9a. Gnathopod 2 basis with a basal constriction.............................................. L. minimus Mayer, 1890
9b. Gnathopod 2 basis with parallel margins, lacking constriction............................... L. elongatus Mayer, 1890
10a. Head with a single anterior projection (= rostrum)....................................... L. gracilis Chevreux, 1927
10b. Rostrum absent, but a pair of anterolateral projections present............................... L. africanus Mayer, 1920
11a. Dorsal projection on pereonites 3, 4 and 5 in males, and 3 and 5 in females................................................................................................ L. cachuchoensis Guerra-García, Sorbe & Frutos, 2008
11b. Anterolateral projection on pereonites 2, 3 and 4....................... L. minusculus Guerra-García & Hendrycks, 2013
12a. Pereonites 2 and 3 with a pair of anterolateral acute and directed downwards projections............................................................................................... L. isabelensis Sánchez Moyano et al., 2015
12b. Pereonites 2 and 3 without dorsal or anterolateral projections.................... L. guerragarciai Mauro & Serejo, 2015
description: Published as part of Alarcón-Ortega, Lucy C. & Carballo, José L., 2022, Description of a new species of Liropus (Crustacea, Amphipoda) from Puerto Vallarta, Pacific coast of Mexico, pp. 528-536 in Zootaxa 5154 (5) on page 535, DOI: 10.11646/zootaxa.5154.5.2, http://zenodo.org/record/6655447