Urvaschia convexa, Gao & Xiao & Kondorosy, 2022

Gao, Cuiqing, Xiao, Shiya & Kondorosy, Elod, 2022, Revision of the genus Urvaschia Hopp (Hemiptera, Lygaeoidea, Oxycarenidae), with descriptions of two new species from China and Nepal, ZooKeys 1123, pp. 83-97 : 83

Urvaschia convexa sp. nov.

Figs 2b, e , 3d-f , 4

Camptotelus obscuripennis : Zheng and Zou 1981: 91, fig. 323, pl.13: 129. Misidentification.

Type material examined.

Holotype. China • ♀; Maerkang [pr], Sichuan [pr] / 2600-2800m / 13.viii.1963 [hw] (TNHM) // leg. Jiang Xiong [pr] // Camptotelus obscuripennis Kiritshenko [hw]/ det. Leyi Zheng [hw]. Paratype. China • ♂; Maerkang [pr], Sichuan [pr] / 2600-2800m / 11.viii.1963 [hw] (TNHM) // leg. Jiang Xiong [pr].

Description.

Colouration. Head blackish brown; bucculae and labium brown; antennae dark brown. Pronotum brown, with a pale brown midline; callar area of pronotum blackish brown. Scutellum blackish brown, distal 3/4 with a brown midline. Corium pale yellowish brown, evenly covered with obscure brown spots; distal margin of corium dark brown; apical angle of corium with a small blackish brown spot. Colour of membrane similar to that of corium, with brown spots between brown veins. Thoracic sterna blackish brown except posterior 1/2 of prosterna yellowish brown. Supracoxal lobe of prosternum yellow. Mesopleuron blackish brown; inner 1/2 of ostiolar peritreme of metathoracic scent gland yellowish white, outer 1/2 of ostiolar peritreme brown. Posterior 1/2 of metapleura broadly yellowish white. Abdominal sterna dark reddish brown. Femora dark brown, tibiae ochraceous.

Structure. Head slightly declined, covered very densely with deep and large punctures and long white erect setae both dorsally and ventrally; vertex comparatively flat. Eyes slightly protruding laterally. Distance between posterior margin of eyes and anterior margin of pronotum ~ 1/3 of diameter of eyes. Bucculae high, covering labium, with sparse punctures. Antennae covered with dense oblique setae; apical quarter of segment I surpassing clypeus. Labium reaching base of mesocoxae, first segment of labium surpassing posterior margin of bucculae. Venter of head comparatively flat, covered with dense punctures and dense decumbent setae.

Pronotum trapezoid, flat, calli slightly emergent. Anterior margin straight; middle part of posterior margin slightly concave; lateral margins of pronotum sinuate; both of anterolateral and posterolateral pronotal angles rounded. Pronotum covered with dense punctures and with long erect setae, slightly leaning posteriad. Base of scutellum slightly sunken, covered with punctures and setae except midline, slightly emergent in apical 1/2. Hemelytra flat, sparsely covered with white short setae; clavus with inner and outer rows of strong and shallow punctures, scattered with many irregular punctures between them. Corium with sparse scattered punctures. Apical margin of corium convex, costal margin evenly arched; body broadest near apex of clavus, length of corium almost three fourth of hemelytra. Membrane short and small, only overlapping each other on inner edge (Fig. 2b ); membranal veins remarkable; apex of membrane surpassing tip of abdomen. Ostiolar peritreme of metathoracic scent gland strongly protruding, apically rounded. Fore femora slightly thickened, unarmed (Fig. 2e ). Abdominal connexivum not exposed. Abdominal sternum impunctate, covered with comparatively dense setae.

Pygophore (Fig. 3d ): Posterior margin of pygophore and cup-like sclerite fused. Parameres (Fig. 3e, f ): outer projection large and slightly sharp; inner projection very small; blade nearly rectangularly bent to shank of paramere in lateral view.

Measurements (mm, N = 2). Holotype. ♀ (Paratype. ♂), Body length 3.44 (3.08). Head length 0.53 (0.45), width across eyes 0.65 (0.69); antennal segments I-IV length: 0.20: 0.50: 0.36: 0.41 (0.17: 0.42: 0.31: 0.43); labium length 1.26 (covered), first segment length 0.31. Pronotum length 0.71 (0.66), width of anterior margin 0.58 (0.53), width of posterior margin 1.01 (0.85); scutellum length 0.44 (0.39), width 0.57 (0.40). Distance apex clavus- apex corium 1.03 (0.92); distance apex corium-apex membrane 0.76 (0.65).

Etymology.

The species epithet, convexa, is an adjective and refers to the convex distal margin of corium.

Distribution.

China (Sichuan) (Fig. 4 ).

Differential diagnosis.

Based on the description and figures, we conclude that the new species was always misidentified as " Camptotelus obscuripennis Kiritshenko, 1914" in China ( Zheng and Zou 1981, 1987; Zheng 1988). When we examined the photographs of the type of Camptotelus obscuripennis , we found they are different but closely related species. The new species differs from U. obscuripennis in the following combination of characters: antennae unicolourous (vs. antennae not unicolorous in U. obscuripennis ); distal margin of corium convex and apical angle of corium not elongated (vs. distal margin of corium concave; apical angle elongated and pointed in U. obscuripennis ); inner 1/2 of ostiolar peritreme of metathoracic scent gland yellowish white, outer 1/2 brown (vs. ostiolar peritreme of metathoracic scent gland black in U. obscuripennis ); profemur unarmed (vs. profemur with a spine).

Figures

Figure 2. Dorsal and ventral views a, d Urvaschia obscuripennis comb. nov. b, e Urvaschia convexa sp. nov., holotype c, f Urvaschia recta sp. nov., holotype.

Figure 3. Pygophore (dorsal views, parameres removed) and left paramere (dorsal and lateral views): a-c Urvaschia obscuripennis comb. nov. d-f Urvaschia convexa sp. nov., paratype g-i Urvaschia recta sp. nov., holotype.

Figure 4. Distribution of the species of Urvaschia.