New species, redescriptions, and new records of Hygronemobius Hebard, 1913 (Orthoptera: Trigonidiidae) from Brazil

Hygronemobius Hebard, 1913 is a genus of nemobine crickets with a wide distribution in the Neotropical region, but also found in southern North America, typically inhabiting the leaf litter. They are small size crickets with the hind tibia bearing three dorsal spurs dorsally on each margin and three external and two internal apical spurs; male genitalia with a very broad ectophallic fold, forming a distinct ventral half-disc, with two ventrally directed pseudepiphallic lobes and a small dorsal cavity.

Currently, 30 species are considered valid, of which nine are officially recorded in Brazil. Therefore, this work aims to describe two new species of Hygronemobius found in Brazil. The species were collected in the Melgaço and Juruti municipalities in Pará State.

Additionally, Hygronemobius amoenus Chopard, 1920 and Hygronemobius nigrofasciatus Desutter-Grandollas, 1993 are being redescribed, and their distribution expanded to Brazil. Finally, Hygronemobius ottei n. nom. is proposed as a new name for Hygronemobius elegans (Otte, 2006) (Costa Rica) as it is a homonym of Hygronemobius elegans Desutter-Grandcolas, 1993 (Peru).