Three new species of Colomastix Grube, 1861 (Amphipoda: Colomastigidea) from Todos-os-Santos Bay, northeastern Brazilian coast, <br />with identification keys to Atlantic Ocean species

• DOI: 10.11646/zootaxa.4629.4.3
• Publication Date: 2019-07-09T01:09:17Z
• Authors: LIZ SILVANY; ANDRÉ R. SENNA
• Keywords: Apex (geometry); Identification key

Colomastigids are small, commensal marine amphipods distributed worldwide. Here we present descriptions of three new species Colomastix Grube, 1861 from Todos-os-Santos Bay (Bahia state), and separately identification keys to males females all known the Atlantic Ocean. Males iemanja sp. nov. can be distinguished others in genus especially by bifurcate apex inner ramus uropod 1, with highly asymmetric branches surrounded a membranous-like structure. tubulosa tube-like morphology distalmost palmar process gnathopod 2 expanded 2. Females only pleated on dactylus 2, besides trispinosa Silvany, Alves Senna, 2019. marielle other elongate carpus pereopod 5 rudder-like 1 males. These increase number 18 21, amongst first records suborder Colomastigidea Lowry Myers, 2017 Brazilian waters.