Phalangopsidae crickets (Orthoptera, Grylloidea) from the Mitaraka biological survey, French Guiana Author Desutter-Grandcolas, Laure Institut de Systématique, Évolution et Biodiversité (ISYEB), Muséum national d’Histoire naturelle, CNRS UPMC EPHE UA, case postale 50, 57 rue Cuvier, 75231 Paris Cedex 05 (France) desutter @ mnhn. fr (corresponding author) desutter@mnhn.fr Author Faberon, Léo Gagny, Le Raincy, 93340 (France) faberonl @ gmail. com faberonl@gmail.com text Zoosystema 2020 2020-12-22 42 32 739 797 journal article 9154 10.5252/zoosystema2020v42a32 7753c3e4-2c97-40e8-9098-4d1b2fa88b2a 1638-9387 4399795 urn:lsid:zoobank.org:pub:4B5EE94B-F254-4B4D-BED1-746AE71A5FDC Unithema sp. MATERIAL FROM THE MITARAKA. — French Guiana • 1 juvenile ♂ ; Monts Tumuc-Humac , Massif du Mitaraka vers sommet en Cloche ; entre 54.4541 O 2.2349 N et 54.4646 O 2.2329 N; alt. entre 370 m et 470 m ; 23.II.-10.III.2015 ; F. Legendre & S. Hugel leg.; de nuit, fn. SH499; MNHN . Specimen in bad condition (fungi) . REMARK Unithema is the only strogulomorphine genus recorded today in French Guiana . As the juvenile male at hand present very short FWs, it could belong to this genus. The specimen has a very dark coloration: its pronotum is almost entirely black, without a yellow band along posterior margin, and with only a very thin longitudinal line on DD; its palpi, abdomen and cerci are entirely black. It shows also particular details of coloration, such as alternate black and ivory lines on scape anterior side, a yellow band on posterior margin of metanotum (as in Unithema xanthochosmea Desutter-Grandcolas, 1991 ), black antennae with yellow articles widely spaced on flagellum, and a thin ivory line under median ocellus, bordered by two yellowish lines along antennal pits. This specimen could belong to a new species.