Bathypisella, Ortiz, Winfield and Ardisson, 2022

Ortiz, Manuel, Winfield, Ignacio & Cházaro-Olvera, Sergio, 2024, A new deep-sea species of genus Bathypisella (Crustacea: Peracarida: Amphipoda) from bathyal soft bottoms, south-western Gulf of Mexico, Journal of Natural History 58 (37 - 40), pp. 1461-1472 : 1470-1471

Dichotomous key to identify the known species of the genus Bathypisella

1A – Antenna 1 article 3 shorter than 1; 3-articulate accessory flagellum; antenna 2 flagellum 7-articulate; maxilliped palp article 3 not in right angle with article 2; maxilla 1 inner plate with two distal setae; four teeth left mandible lacinia mobilis; gnathopod 1 carpus and propodus equal in length; both anterior margins covered with long setae; gnathopod 2 propodus palmar margin half its length; epimeron 3 right angle posteroventral margin; telson deeply cleft for more than half its length ...................................................................................................................................... B. spinicaudata

1B – Antenna 1 article 3 as long as 1; 4-articulate accessory flagellum; antenna 2 flagellum 11-articulate; maxilliped palp article 3 in right angle with article 2; maxilla 1 inner plate with five lateral setae; three teeth left mandible lacinia mobilis; gnathopod 1 propodus longer than carpus; both anterior margins naked; gnathopod 2 propodus palmar margin more than half its length; epimeron 3 trifid posterior margin; telson deeply cleft for half its length ............................ B. carmenae sp. n.