Duolandrevus (Eulandrevus) gorochovi, Shi, 2017

Shi, Fu-Ming, 2017, Taxonomy of the subgenus Duolandrevus (Eulandrevus) Gorochov (Orthoptera: Gryllidae: Landrevinae: Landrevini) from China, with descriptions of three new species, Zootaxa 4317 (2), pp. 310-320 : 316

8. Duolandrevus (Eulandrevus) gorochovi sp. nov.

( Figs 7 , 10, 13 , 16, 17 )

http://lsid.speciesfile.org/urn:lsid: Orthoptera .speciesfile.org:TaxonName:498559

Description. Male. Body slightly larger ( Fig. 7 ), occiput flat, frontal rostrum bluntly round, slightly protruding, frontal rostrum wider than antennal scape, antennal scape almost trapezoid, anterior margin somewhat convex. Lateral ocellus, oval, located at the base of side rostrum; median ocellus, like half moon, located at midpoint of rostrum top. Eyes lager, ventral margin with a lot of fine transverse striation. Apical joint of maxillary palpi depressed, arc-shaped, and slightly longer than the third joint; apical joint of labial palpi 2 times as length as second joint, depressed and flat, truncate. Head slightly wider than pronotum, obviously transverse, pronotum with pubescent; anterior margin concave, posterior margin straight, about 2 times as long as wide. Tegmina short, extending to base of 5th the abdominal tergite; without mirror; with 5–7 oblique veins on dorsal surface and 5 longitudinal veins in lateral field; apical portions armed with reticulated veins. Metanotal gland developed, as in Fig.13 ; anterior margin of metanotal gland shorter than posterior margin (1: 1.3). Fore tibiae with two tympana, external tympanum oblong, interal tympanum oval; hind tibiae armed with small spines on the basal half portion and with 4 long spines respectively on both sides at the apical half portion.

Supra-anal plate simple ( Fig. 10 ), flat, trapezoid, about 2.3 times as long as wide. Posterior margin arc-shaped, with bristle. Genitalia ( Figs. 16–17 ): Epiphallus equipped with a pair of long and thin median lobes; lateral lobes with a concavity, and divided into two small lobes; ectoparamere shorter than lateral lobes.

Female. Unknown.

Coloration. Head and pronotum dark brown. Antenna light brown; labrum and eye brown; ocellus light yellow. Tegmina and legs light brown.

Measurements (mm). Body: 20.4–23.0; pronotum: 3.8–4.1; tegmen: 7.8–8.5; hind femur: 13.0–17.9.

Type material. Holotype. ♂, Nanling , Ruyuan, Guangdong, China, 22 August, 2010, collected by Cuixi Du. Paratype: 1♂, the information same as holotype.

Distribution. China (Guangdong).

Diagnosis. This new species is related to Duolandrevus (Eulandrevu s) kalimantan , but can be distinguished on the shape of the median lobes of the epiphallus, the former median lobes of the epiphallus is long and thin; lateral lobes with a concavity, longer than ectoparamere.

Etymology. This species is named after Dr. A. V. Gorochov, honoring this Russian entomologist.

Figures

FIGURES 7 – 8. Habitus, male, dorsal view: 7. Duolandrevus (Eulandrevus) gorochovi sp. nov.; 8. Duolandrevus (Eulandrevus) axinus sp. nov.

FIGURES 9 – 14. Duolandrevus (Eulandrevus) spp. Male, dorsal view. 9, 12. Duolandreuv (Eulandrevus) ziyunensis sp. nov.; 10, 13. Duolandrevus (Eulandrevus) gorochovi sp. nov.; 11, 14. Duolandrevus (Eulandrevus) axinus sp. nov. 9 – 11. Supra-anal plate; 12 – 14, Metanotal gland.

FIGURES 15 – 17. Genitalia. 15. Duolandrevus (Eulandrevus) ziyunensis sp. nov.; 16, 17. Duolandrevus (Eulandrevus) gorochovi sp. nov.; a, dorsal view; b, ventral view; c, lateral view.