Adelosgryllus megapterus, Merlo & Castro-Souza & Junta & Ferreira, 2022

Merlo, Rayanne Lays Sant’Ana, Castro-Souza, Rodrigo Antônio, Junta, Vitor Gabriel Pereira & Ferreira, Rodrigo Lopes, 2022, Expanding the taxonomic knowledge of Adelosgryllus Mesa & Zefa, 2004 (Orthoptera: Grylloidea: Phalangopsidae): description of four new species for Brazilian subterranean habitats, Zootaxa 5133 (1), pp. 83-109 : 94-95

publication ID	https://doi.org/ 10.11646/zootaxa.5133.1.4
publication LSID	lsid:zoobank.org:pub:31F5A638-2922-41DC-BEA4-0988B49BE6C4
DOI	https://doi.org/10.5281/zenodo.6521010
persistent identifier	https://treatment.plazi.org/id/635AA513-951E-AD46-FF17-FB18FA91F83B
treatment provided by	Plazi
scientific name	Adelosgryllus megapterus
status	sp. nov.

Treatment

Adelosgryllus megapterus View in CoL n. sp.

( Figures 46–51 View FIGURES 46–51 , 52–59 View FIGURES 52–59 , 60–62 View FIGURES 60–62 , 63–64 View FIGURES 63–64 , 65–71 View FIGURES 65—71 , Table 3 View TABLE 3 )

Material examined. Holotype ♂, code ISLA 66157, Brazil, Minas Gerais state, Conceição do Mato Dentro municipality, Resgate cave (18º 55’ 41.593” S; 43º 25’ 10.146” W), 12.iv.2018, CARSTE leg GoogleMaps . Holotype condition: right tegmen and legs detached, and maintained in holotype’s tube. Paratypes, 3 ♂♂ ( ISLA 64193, ISLA 64208 and ISLA 64206) and 1♀♀ ( ISLA 64165), ISLA 64193 and 64206 same data of holotype, ISLA 64208 and 64165 collected in 05.v.2018, all specimens collected in same locality of holotype .

Distribution. Known only to Resgate cave (18º 55’ 41.593” S; 43º 25’ 10.146” W), Conceição do Mato Dentro municipality, Minas Gerais state, Brazil.

Etymology. The specific epithet refers to the presence and size from second pair membranous wings present in some adult males of this species, from the Latin “ megapterus ”, mega = large, pterus = wing.

Diagnosis. Combination of the following characteristics: superior inner base of paramere 1 quadrangular-shaped with slight bulging (ventral view) (Ps.P1, Fig. 47 View FIGURES 46–51 ); paramere 2 slightly inclined towards pseudepiphallic median projection (dorsal view) (Ps.P2, Fig. 46 View FIGURES 46–51 ); rami dilated, acuminate apex and poorly sclerotized (very similar to A. spurius ) (R, Figs 47, 48 and 50 View FIGURES 46–51 ); pseudepiphallic posterior projections poorly sclerotized, quadrangular-shaped, a little less developed compared to A. lucifugus and A. xambioa n. sp. (Ec.Pr, Fig. 50 View FIGURES 46–51 ); ectophallic fold well sclerotized, lateral border slightly directed outward (Ec.F, Fig. 47 View FIGURES 46–51 ); endophallus slightly less sclerotized (when compared to A. ferratilis n. sp.), circular-shaped and vertically elongated (similar to A. ferratilis n. sp.) (End.Sc, Fig. 47 View FIGURES 46–51 ).

Description, male holotype. Similar to A. ferratilis n. sp. with the following differences: body dark brown and head slightly orange, possibly discoloration occurred after fixation in ethanol 70% ( Figs 52 and 53 View FIGURES 52–59 ); compound eyes with a depigmented well pronounced upper region near the scape insertion ( Fig. 52 View FIGURES 52–59 ), vestigial ocelli; pronotum dark brown, well darkened and pubescent, marked with a whitish vertical band and a slight horizontal band, absence white spots ( Fig. 54 View FIGURES 52–59 ); Right tegmen: well sclerotized, covering the first four or five abdominal tergites ( Fig. 55 View FIGURES 52–59 ). Lateral field (in lateral view, Figs 55 View FIGURES 52–59 and 64 View FIGURES 63–64 ): diagonal (DV) and subcostal (SC) veins well marked, connected to each other by poorly marked irregular veins; radial (R) vein with five branches towards outside; medial (M) and radial (R) veins connected to each other by well-marked irregular veins. Field (in ventral view, Fig. 63 View FIGURES 63–64 ): harp with reticular veins in the first three distal cells; mirror with reticular veins in all cells, with a narrower proximal part of triangular shape (similar to A. xambioa n. sp.); second pair membranous wings developed occur below the tegmina ( Figs 55 and 56 View FIGURES 52–59 ); subgenital plate darker and acuminate at apex ( Fig. 57 View FIGURES 52–59 ); supra-anal plate darker ( Figs 58 and 59 View FIGURES 52–59 ); stridulatory file with 102 teeth.

Observations in Paratypes. Male phallic sclerites: Similar to A. ferratilis n. sp. with the following differences: phallic complex less sclerotized, but more sclerotized than A. xambioa n. sp. ( Figs 46–50 View FIGURES 46–51 ); Pseudepiphallic: superior inner base of paramere 1 quadrangular-shaped with slight bulging (ventral view) (Ps.P1, Fig. 47 View FIGURES 46–51 ); paramere 2 slightly inclined towards pseudepiphallic median projection (dorsal view) (Ps.P2, Fig. 46 View FIGURES 46–51 ); rami dilated, acuminate apex and poorly sclerotized (very similar to A. spurius ) (R, Figs 47, 48 and 50 View FIGURES 46–51 ); Ectophallic invagination: posterior projections poorly sclerotized, quadrangular-shaped, a little less developed compared to A. lucifugus and A. xambioa n. sp. (Ec.Pr, Fig. 50 View FIGURES 46–51 ); ectophallic fold well sclerotized, lateral border slightly towards outside (Ec.F, Fig. 47 View FIGURES 46–51 ). Endophallus: endophallic sclerite slightly less sclerotized (End.Sc, Fig. 26 View FIGURES 25–29 ).

Female ( Figs 65–71 View FIGURES 65—71 , ISLA 64165). Same coloration as holotype ( Fig. 65 View FIGURES 65—71 ), body size bigger than the holotype (11.382 mm); small wings triangular-shaped ( Fig. 65 View FIGURES 65—71 ); supra-anal plate darkened and with white spots, trapezoidalshaped, with two small lateral projections, rounded at apex, with long apical bristles ( Figs 67 and 68 View FIGURES 65—71 ); subgenital plate light brown, short, V-shaped ( Figs 66 and 67 View FIGURES 65—71 ); ovipositor elongated and thin (5.255 mm), size proportional to tibia III, sword format at apex ( Figs 65–67 and 69–71 View FIGURES 65—71 ).

Copulatory Papilla ( Fig. 51 View FIGURES 46–51 : a, b and c, ISLA 64165): well sclerotized, circular-shaped (similar to A. lucifugus ), with an extensive opening, in the half moon shape, reaching more than 2/3 of the structure in dorsal view ( Fig. 51c View FIGURES 46–51 ); lateral face sclerotized (similar to A. lucifugus ) ( Fig. 51b View FIGURES 46–51 ), apex slightly concave, with a ventral indentation followed by a less sclerotized region (in white), base with a large membranous opening half moon shape in ventral view ( Fig. 51a View FIGURES 46–51 ).

Ecological Remarks

Since the specimens of Adelosgryllus megapterus n. sp. were not collected by any of the authors of this study, there is no information regarding its habitat preferences. However, as for other species herein described, despite the fact that the species was only found inside a cave, it does not exhibit any troglomorphic traits, thus not being a caverestricted species. Accordingly, it is likely that the species’ distribution is much wider than currently known.