Desutterella Souza-Dias, Campos & de Mello, 2017

Desutterella Souza-Dias, Campos & de Mello View in CoL n. gen.

Etymology. Taxon named after the French Orthopterist Laure Desutter-Grandcolas, for her work on Neotropical Grylloidea.

Type species. Desutterella manauara Souza-Dias, Campos & de Mello n. sp.

Species included. Desutterella manauara Souza-Dias, Campos & de Mello n. sp., Desutterella colombiana Souza-Dias , n. sp.

Distribution. Amazon Forest, in Brazil ( Amazonas State), and Colombia ( Amazonas Department).

Diagnosis. Size small, slender, as the other genera from Aracambiae group. General coloration light to medium brown. Head, pronotum and legs I and II with sparse, thick setae. Fastigium with double row of thick setae. Three ocelli, large, circular. Maxillary palpi elongated, joints 3–5 whitish, pilose. Legs elongated, not annulated; tympanum on inner face of TI. Male. Metanotum with two projections rounded, whitish, glandular. Male FWs short, rounded, membranous; right FW medium brown, apex light brown, pilose; stridulatory file very reduced; veins and areas for sound propagation absent. Male genitalia. Male genitalia bearing a pair of genital glands within pseudepiphallic sclerite, connected to tubular pseudepiphallic arms. Pseudepiphallic arms curved outwards. Pseudepiphallic parameres highly sclerotized; PsP2 with two pairs of distinct projections. Female. Almost same size as males. Females FWs yellowish brown, transparent, small, reaching first abdominal tergite.

Description. Occiput and vertex with thick setae ( Figs. 2 A–D View FIGURE 2 , 5 A–C View FIGURE 5 ). Fastigium wider than long, with double row of thick setae, below vertex level and not separated from it by line or furrow ( Figs. 2 A–D, G View FIGURE 2 , 5 A–C, F View FIGURE 5 ). Three ocelli, large, circular ( Figs. 2G View FIGURE 2 , 5F View FIGURE 5 ). Antennal scape longer than wide ( Figs. 2 A–D View FIGURE 2 , 5 A–C View FIGURE 5 ). Maxillary palpi elongated, joints 3–5 elongated, whitish, pilose, joint 4 longest ( Figs. 2J View FIGURE 2 , 5E View FIGURE 5 ); joint 5 curved, apex rounded ( Figs. 2J View FIGURE 2 , 5E View FIGURE 5 ). Pronotum DD longer than wide, with thick setae, mainly on cephalic margin ( Figs. 2 A–F View FIGURE 2 , 5A, B View FIGURE 5 ). Tergites slightly pubescent, without apparent tergal glands ( Figs. 2A, B, D View FIGURE 2 , 5A View FIGURE 5 ). Legs I and II not annulated, with thick setae. Tympanum on inner face of TI. TIII not annulated. Subapical spurs 4/4, with serrulation between and above them; inner distal subapical spur near upper apical; apical spurs 3/3, more developed on inner face; inner apical spurs: dorsal longest (iad), median slightly shorter (iam), ventral smaller (iav) (iad>iam>iav); outer apical spurs: median longest (oam), dorsal slightly shorter (oad), ventral smaller (oav) (oam>oad>oav). Basitarsus III with double row of spines.

Male. Metanotum with two glandular projections whitish, rounded ( Figs. 2D, E View FIGURE 2 , 3 A–B View FIGURE 3 , 5D View FIGURE 5 ). Male FWs short, reaching half of abdomen ( Figs. 1A View FIGURE 1 , 2A View FIGURE 2 , 5A View FIGURE 5 ); right FW medium brown, pilose ( Figs. 2A, C View FIGURE 2 , 5 A–C View FIGURE 5 ); without specialized veins or areas for sound production and propagation; left FW membranous, transparent, lateral field medium brown ( Fig. 5D View FIGURE 5 ). Supra anal plate not constricted medially ( Figs. 2H View FIGURE 2 , 5H View FIGURE 5 ); distal margin without extended angles ( Figs. 2H View FIGURE 2 , 5H View FIGURE 5 ). Subgenital plate elongated, pubescent ( Figs. 2I View FIGURE 2 , 5G View FIGURE 5 ).

Male genitalia. Male genitalia bearing a pair of genital glands within pseudepiphallic sclerite, connected to tubular pseudepiphallic arms ( Figs. 4 A–C View FIGURE 4 , 6 A–C View FIGURE 6 ). Pseudepiphallus: pseudepiphallic sclerite transverse, ( Figs. 4 A–C View FIGURE 4 , 6 A–C View FIGURE 6 ); pseudepiphallic arms curved outwards ( Figs. 4A, B View FIGURE 4 , 6A, B View FIGURE 6 ); apex with opening duct, rounded. Rami elongated, connected to pseudepiphallic sclerite, reaching apex of ectophallic apodemes ( Figs. 4A View FIGURE 4 , 6A View FIGURE 6 ). Pseudepiphallic parameres (PsP) highly sclerotized ( Figs. 4 A–C View FIGURE 4 , 6 A–C View FIGURE 6 ); PsP2 with two pairs of distinct projections: one elongated, upcurved, lateral; second small, medial, semicircular, visible in dorsal view ( Figs. 4A View FIGURE 4 , 6A View FIGURE 6 ); PsP1 elongated ( Figs. 4B View FIGURE 4 , 6B View FIGURE 6 ). Ectophallic invagination. Ectophallic apodemes elongated, thin ( Figs. 4A View FIGURE 4 , 6A View FIGURE 6 ). Ectophallic fold sclerotized, surrounding apex of medio-posterior projection of endophallic sclerite ( Figs. 4B View FIGURE 4 , 6B View FIGURE 6 ). Endophallus. Endophallic sclerite large, flat ( Figs. 4B View FIGURE 4 , 6B View FIGURE 6 ); latero-posterior projections short; medio-posterior projection elongated ( Figs. 4B View FIGURE 4 , 6B View FIGURE 6 ). Endophallic apodeme paired, curved outwards, apex pointed ( Figs. 4B View FIGURE 4 , 6B View FIGURE 6 ).

Female. In comparison with other Luzarinae crickets, females of Desutterella Souza-Dias, Campos & de Mello n. gen. are almost same-sized as males—in the Aracambiae genera, frequently the females are larger than males. Head, pronotum, abdomen and legs with thick setae ( Figs. 1B View FIGURE 1 , 2B View FIGURE 2 ). Females FWs small, translucent, reaching half of first tergite ( Figs. 2B, F View FIGURE 2 ). Supra anal plate pubescent, slightly constricted medially ( Figs. 2K View FIGURE 2 ). Subgenital plate pubescent, small ( Figs. 2L View FIGURE 2 ). Female genitalia: copulatory papilla small, basis rounded, apex pointed centrally ( Figs. 3 D–F View FIGURE 3 ).