Pseudoeupolyphaga magna Han, Che & Wang, 2024

Han, Wei, Che, Yan-Li, Zhang, Pei-Jun & Wang, Zong-Qing, 2024, New species of Eupolyphaga Chopard, 1929 and Pseudoeupolyphaga Qiu & Che, 2024 (Blattodea, Corydioidea, Corydiinae), with notes on their female genitalia, ZooKeys 1211, pp. 151-191 : 151-191

Pseudoeupolyphaga magna Han, Che & Wang sp. nov.

Fig. 9 A – L

Type material.

Holotype: China • male; Sichuan Province, Aba Prefecture, Jinchuan County, Guanyinqiao Township ; 2020; Jian-Yue Qiu leg. Paratype: China • 1 female, same collection data as holotype .

Diagnosis.

The males of this species closely resemble P. yunnanensis , but are significantly larger than all other species in this genus as currently known, and can be distinguished accordingly.

Description.

Holotype. Measurements (mm). Overall length (including tegmen): 42.44; body length: 27.56; body width (tegmina not included): 14.52; tegmen length × width: 37.40 × 12.60; pronotum length × width: 11.67 × 6.91.

Coloration. Pronotum yellowish brown, covered with yellowish setae, anterior margin white (Fig. 9 A, E ). Tegmina subtransparent, densely covered with blackish brown maculae (Fig. 9 A ). Eyes, vertex, and space between ocelli black. Face yellowish brown. Ocelli, antennal sockets, and ante-clypeus white. Antennae, post-clypeus, labrum, labial palpi and maxillary palpi yellow (Fig. 9 G ). Legs yellowish brown, tibia and spines dark yellowish brown to black. Pulvilli and arolia white. Sterna yellowish brown, middle and distal part nearly black (Fig. 9 B ).

Body. Head: Sub-rounded, hidden under pronotum. Eyes and ocelli developed. Ocelli ridge indistinct, with a row of setae on the upper edge. Interocular space narrower than the distance between ocelli, the latter narrower than the distance between antennal sockets. Clypeus developed (Fig. 9 G ). Pronotum: Transverse oval, widest near the middle. Sparsely covered with short setae, middle part with symmetrical black stripes. Anterior whitish margin broad on both sides and absent in middle, unclearly delineated from the yellowish-brown areas (Fig. 9 E ). Tegmina and hind wings: Maculae uniformly distributed and of moderate size. Hind wings nearly transparent, with a few pale brown patches (Fig. 9 A ). Legs: Slender, front femur type C 1. Pulvilli and arolia present (Fig. 9 B ). Abdomen: Supra-anal plate transverse, pubescent, posterior margin slightly protruded medially. Paraprocts simple. Subgenital plate with short setae, hind margin concave in the middle. Styli long (Fig. 9 I, J ). Genitalia: L 1 weakly sclerotized, two posterior lobes diverging widely. L 2 arching curved, broad. Genital hook (L 3) robust. L 4 M broad lamellate. Pda and paa developed, protrusions long. L 8 irregular. R 1 M expanded terminally, R 1 L elongate and banded. R 2 with two chunks. R 3 broadly concave, sub-transparent (Fig. 9 K, L ).

Female paratype. Body length: 22.31 mm; body width: 17.27 mm; pronotum length × width: 12.88 × 6.82 mm.

Coloration. Terga reddish brown (Fig. 9 C ). Space between ocelli reddish brown. Antennae yellow. Ocelli, antennal sockets, ante-clypeus as well as upper and lower margins of labrum white. Middle part of labrum yellow. Post-clypeus pale reddish brown (Fig. 9 H ). Legs yellowish brown, tibia dark yellowish brown. Spines on foot reddish brown to black. Sterna dark reddish brown to black, darker in the middle and edges (Fig. 9 D ).

The widest point of pronotum near the hind margin, middle part with symmetrical black stripe, anterior whitish margin indistinct (Fig. 9 F ). Ocelli degraded to two white spots. Interocular space almost equal to the distance between antennal sockets, both larger than the distance between ocelli (Fig. 9 H ). Front femur type C 1. Arolia and pulvilli absent. Posterior margin of supra-anal plate protruded, slightly emarginated medially. Cerci short and robust, not exceeding posterior margin of supra-anal plate. Posterior margin of subgenital plate protruded and emarginated medially (Fig. 9 C, D ).

Nymph. Unknown.

Ootheca. Unknown.

Etymology.

The species epithet is derived from the Latin word magnus, referring to the significantly larger male body size than is usual in the genus.

Remarks.

The external morphology of this species closely resembles that of P. yunnanensis , particularly in the markings on the tegmina and the coloration of abdomen. However, the male of this species is significantly larger than males of the latter. The genetic distance between this species and others ranges from 13.09 to 21.97 %, further supporting its status as a new species.

Figures

Figure 9. Pseudoeupolyphaga magna Han, Che & Wang, sp. nov. A, B, E, G, I – L male holotype C, D, F, H female paratype A habitus, dorsal view B habitus, ventral view C habitus, dorsal view D habitus, ventral view E pronotum, dorsal view F pronotum, dorsal view G head, ventral view H head, ventral view I supra-anal plate, ventral view J subgenital plate, ventral view K genitalia, dorsal view L right phallomere, right-ventral view. Scale bars: 1.0 cm (A – D); 0.2 cm (E – H); 0.1 cm (I – L).