Open AccessHydaticus aequalis sp. n. and a new record of H. devexus Trémouilles, 1996 from Brazil (Coleoptera, Dytiscidae, Hydaticini)
Author(s) -
César João Benetti,
Grey T. Gustafson,
Neusa Hamada,
Andrew Edward Z. Short
Publication year - 2020
Publication title -
zootaxa
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.621
H-Index - 87
eISSN - 1175-5334
pISSN - 1175-5326
DOI - 10.11646/zootaxa.4820.2.11
Subject(s) - dytiscidae , biology , amazon rainforest , dorsum , male genitalia , key (lock) , habitat , ecology , taxonomy (biology) , genus , zoology , anatomy
Hydaticus aequalis sp. n. is described from Brazil, where it was recently discovered in the central lowlands region of the Amazon forest. The new species differs from all other Neotropical congeners by its uniformly brown dorsal surface and the shape of medial lobe. The dorsal habitus and male genitalia are illustrated, and a distribution map is provided. The habitat, a small stream and associated forest pool, is illustrated and described. In addition, a new record of H. devexus Trémouilles, 1996, previously known from a single specimen, is reported from the highlands of northeastern Brazil, and a modified key to Neotropical species of the genus is provided.