Idiotrella coomani (Chopard, 1939)

He, Zhu-Qing, Zhou, Yan-Ling, Liu, Da-Bing, Hu, Tian-Hao & Wang, Han-Qiang, 2025, First record of the genus Idiotrella Gorochov, 2002 for China (Orthoptera: Oecanthidae: Podoscirtinae: Podoscirtini), Zootaxa 5683 (4), pp. 584-591 : 585-589

publication ID	https://doi.org/10.11646/zootaxa.5683.4.8
publication LSID	lsid:zoobank.org:pub:81E31634-2CB8-4C57-9A5A-A2FD32B5A7FF
persistent identifier	https://treatment.plazi.org/id/5B5187C3-FF8F-FFFD-FF2B-F9CDFD59A113
treatment provided by	Plazi
scientific name	Idiotrella coomani (Chopard, 1939)
status

Treatment

Idiotrella coomani (Chopard, 1939) View in CoL

Figs. 1–5 View FIGURE 1 View FIGURE 2 View FIGURE 3 View FIGURE 4 View FIGURE 5

Madasumma coomani Chopard, 1939: 79 View in CoL

Calyptotrypus coomani Chopard, 1968: 367 View in CoL

Idiotrella coomani Gorochov, 2002: 349 View in CoL ; Kim & Pham, 2014: 63

Diagnosis. This species is different from other species by its epiphallus with a pair of long and flat posterior lobes.

Materials examined. Holotype: VIETNAM, Hoa-Binh, collected date unknown, A. de Cooman coll., SEM CAS, 14068818 ( Fig. 2 View FIGURE 2 ).

Other materials. 1 male & 1 female, CHINA, Yunnan, Honghe, Hekou , 22.5681 N, 103.94161 E, alt. 330 m, 2019-VIII-19, He Zhu-Qing coll., ECNU, ECNU-2068 & ECNU-2067 ; 2 nymphs, CHINA, Yunnan, Honghe GoogleMaps ,

Hekou, 22.5681 N, 103.94161 E, alt. 330 m, 2021-VII-11, He Zhu-Qing coll., ECNU, ECNU-4496 & GoogleMaps ECNU-4497 GoogleMaps .

Redescription based on new material from China.

Male ( Figs. 1A View FIGURE 1 , 3 View FIGURE 3 ).

Head. Head round, slightly shorter and narrower than pronotum. Frontal rostrum as wide as antennal scape. Three ocelli in triangular, median ocellus larger than lateral ocelli ( Fig. 3B View FIGURE 3 ). The 5th segment of maxillary palpus strongly thickened, the 3rd segment as long as the 5th, and the 4th segment shorter than them both.

Thorax. Pronotum pubescent. Pronotal disc same length as wide, anterior margin straight, posterior margin sinuous and wider than anterior margin ( Fig. 3A View FIGURE 3 ). Rounded angle between disc and lateral lobes. Metanotal gland simple as in ( Fig. 3D View FIGURE 3 ).

Legs. Outer tympanum open and oval ( Fig. 3E View FIGURE 3 ). Inner tympanum little narrower than the outer one ( Fig. 3F View FIGURE 3 ). Hind tibia with five pairs of dorsal spurs, with small spines between them ( Fig. 3G View FIGURE 3 ). Three pairs of apical spurs, with outer ones shorter and inner ones longer. Of three inner ones, superior apical spur longest, of three outer ones, median apical spur longest. The 1st segment of tarsus as long as the 2nd and 3rd combined. A pair of apical spurs at the end of the 3rd tarsal segment, both spurs as long as inner superior apical spur.

Wings ( Fig. 1A View FIGURE 1 ). Forewing developed, beyond terminal of abdomen. The mirror longer than wide, angular in front, rounded behind, with one dividing vein slightly above the middle. Harp with straight d2 and six oblique veins, including two long ones together near the diagonal, four short ones in the anal angle. Apical field reticulated, nearly one-third of the total forewing length. Chord1 divided by the pi. Sc with 11 veins reaching the anterior margin of forewing. R and M+CuA temporarily fused before the origin of the lc ( Fig. 3H View FIGURE 3 ). CuPa forking into CuPaβ and CuPaα at half of the forewing length. Lanceolate cell long and narrow. Hindwing slightly longer than the forewing.

Abdomen. Cercus thin and elongate. Male anal plate simple with two clusters of hairs on two sides ( Fig. 3C View FIGURE 3 ). Genital plate obviously longer than anal plate.

Genitalia ( Fig. 4 View FIGURE 4 ). Epiphallus as in H shape, a pair of posterior lobes long and flat, with apex sharp and up curved. Ectoparameres with three pairs of posterior lobs, two lower pairs short, one upper pair thin and long, as long as epiphallic lobes, apex sharp and down curved. Guiding rod short and not fully sclerotized. Endoparameral apodeme long with wide apex, ramus also long with wide apex.

Female ( Figs. 1B View FIGURE 1 , 5 View FIGURE 5 ). Similar to male ( Figs. 1A View FIGURE 1 , 2 View FIGURE 2 ). Forewing without stridulatory veins, crossveins reticulated; area between the R and the M+CuA with brown spots. Genital plate with deeper apical notch ( Fig. 5C View FIGURE 5 ). Ovipositor long with teeth on the ventral side of apical part ( Fig. 5D, E View FIGURE 5 ).

Coloration.

Male. Body black brown. Small sparse light spots on antennal flagellum. Head and pronotum disc with irregular black stripes. Pronotal lateral lobe and six legs with small black spots. Male forewing generally brown; the posterior harp angle lightish; area between the base of PCuA, PCuP and AA, and the area between R and M+CuA with lightish crossveins; the posterior margin lightish at apical half. Cercus in brown and white. Female forewing generally brown, with lightish crossveins between lateral field and dorsal field. Nymph similar to adult in color, but anal plate in white.

Measurements (mm).

♂ ( ECNU-2068 ) :

SZ: 27.36; BL: 28.62; PL: 3.32; FWL: 19.10; HWL: 20.97; HFL: 12.52.

♀ ( ECNU-2067 ) :

SZ: 33.02; BL: 20.48; PL: 3.60; FWL: 22.10; HWL: 26.44; HFL: 14.00; OL: 14.05.

Distribution. Vietnam; China ( Yunnan).