Vittiblatta ferruginea Luo & Wang, 2023

Luo, Xin-Xing, Deng, Wen-Bo, Che, Yan-Li & Wang, Zong-Qing, 2023, Two new genera (Vittiblatta gen. nov. and Planiblatta gen. nov.) of Blattinae (Blattodea, Blattidae) from Southwest China and the discovery of chirally dimorphic male genitalia in Vittiblatta punctata sp. nov., ZooKeys 1187, pp. 401-421 : 401

Vittiblatta ferruginea Luo & Wang sp. nov.

Figs 4 , 7 (in part)

Type materials.

Holotype: China • ♂; Yunnan, Tongbiguan Township, Yingjiang County, Dehong Dai and Jingpo Autonomous Prefecture; 1345 m alt.; 1.VI.2018; Lu Qiu & Wenbo Deng leg.; SWU-B-BL-082401. Paratypes: China • 6♂♂; Yunnan, Tongbiguan Township, Yingjiang County, Dehong Dai and Jingpo Autonomous Prefecture; 1345 m alt.; 1-5.VI.2018; Lu Qiu & Wenbo Deng leg.; SWU-B-BL-082402 to 082407 • 6♂♂, 1♀; Yunnan, Meizihu Reservoir Highway, Pu’er City; 20-21.V.2016; Lu Qiu & Zhiwei Qiu leg.; SWU-B-BL-082408 to 082414 • 1♂; Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Menglun Town, Mengla County, Xishuangbanna Prefecture; 27. V. 2016; Lu Qiu & Zhiwei Qiu leg.; SWU-B-BL-082415 • 1♂; Yunnan, Xiniu (Rhino) Plains Scenic Area, Pu’er National Park, Pu’er City, Pu’er National Park; 1602 m alt.; 2.VII.2021; Jiawei Zhang & Jinlin Liu leg.; SWU-B-BL-082416.

Diagnosis.

Combining the following characteristics, this species is easily distinguished from other species of this genus: 1) body dark reddish brown; 2) pronotum smooth without punctures; 3) the hind margin of subgenital plate arcuate; 4) the inner margin of L4C with serrate auriculate projection; 5) the distal part of R1G with a slender spine; 6) anterior arch with furrow; 7) the surface of basivalvulae flat.

Description.

Sexual dimorphism present. Coloration. Body reddish brown to dark reddish brown; ocelli white; cerci and styli brown to black (Fig. 4A-D ).

Male (Fig. 4A, B ). Body length including tegmen: 25.4-30.9 mm; body length: 18.2-21.9 mm; pronotum length × width: 4.6-5.9 mm × 5.8-7.0 mm; tegmina length × width: 22.5-26.9 mm × 6.3-8.2 mm. Head and thorax. Vertex slightly exposed. Interocular space slightly wider than the interocellar space, shorter than the distance between antennal sockets. Antennae longer than the body (Fig. 4E ). Pronotum subelliptical; anterior margin slightly concave, hind margin slightly convex; the widest point near the midpoint (Fig. 4F ). The posterior-lateral angles of metanotum with symmetrical and small projections (Fig. 4J ). Tegmina and wings well developed, surpassing the tip of abdomen (Fig. 4A, B, G, H ). Tegmina with ScP strong, posterior branch of R not reaching the end of tegmina (Fig. 4G ). Front femur of type A2 (Fig. 4I ). Mid- and hind legs with strong spines. Hind metatarsus longer than the remaining segments combined. Pulvilli present on 2-4 tarsal segments, claws symmetrical and unspecialized, arolium small (Fig. 7B ). Abdomen. First tergite of male abdomen with visible gland, setose gland curved and downward (Fig. 4J ). Supra-anal plate rectangular, lateral margin not shrunken inward; middle part of hind margin slightly concave. Paraprocts (pp.) long, strip-shaped. Cerci robust (Fig. 4L ). Subgenital plate nearly square; the hind margin arcuate. Styli symmetrical and apically rounded (Fig. 4K ). Genitalia (Fig. 4M ). L1 composed of a elongate sclerite and membrane bearing pubescence. L4C thin, ribbon-like, the inner margin with serrate auriculate projection. L2 irregular, near distal part with two small spines and the end with one long spine inward. L3 unciform and well sclerotized, the basal part bifurcated. The distal part of R1H broad, the inner margin bifurcated with two small spines. The distal part of R1G with a curved, long spine inward.

Female (Fig. 4C, D ). Body length: 22.2 mm; pronotum length × width: 6.1 mm × 7.4 mm; tegmina length × width: 5.8 mm × 5.2 mm. Head and thorax. Interocular space slightly wider than interocellar space and the distance between antennal sockets (Fig. 4D ). Pronotum subelliptical, the widest point near hind margin; anterior margin and hind margin straight (Fig. 4C ). Tegmina and hind wings reduced. Tegmina squamiform, reaching the first tergite of abdomen; the outer margin oblique (Fig. 4C ). Hind wings small, lobe-like. Hind metatarsus approximately equal to the remaining segments combined. Pulvilli present on 2-4 tarsal segments, claws symmetrical and unspecialized, arolium smaller than male. Abdomen. Hind margin of tergum X (TX) with median invagination, and with a membranous line inside; cerci thick and not upturned (Fig. 4N ). Genitalia (Fig. 4N ). The base of first valve (v.I.) with dense microtrichia. First valvifer (vlf.I) thin. Second valve (v.II) with strip-like sclerite. Posterior lobes of valvifer II (p.l.) irregular, the outer margin disconnected with laterosternite IX (ltst.IX). Laterosternite IX broad and irregular. Anterior arch (a.a.) with furrow, and two symmetrical projections near outer margin, inner margin with microtrichia. Spermathecal plate (sp.pl.) broad, connected to basivalvulae (bsv.) by membrane. Spermathecal opening (sp.o.) located at the base of basivalvulae. Spermatheca branched, the leading duct short, the branching duct relatively long, and the end capsule unknown (Fig. 7E ). Basivalvulae reniform, surface flat and margin with sparsely microtrichia. Laterosternal shelf (ltst.sh.) symmetrical.

Etymology.

The species epithet is from the Latin word " ferrugineus ", in reference to the reddish brown or dark reddish brown body.

Distribution.

China (Yunnan).

Figures

Figure 4. Vittiblatta ferruginea Luo & Wang, sp. nov. A, B, E-M male holotype C, D, N female paratypes A, C habitus, dorsal view B, D habitus, ventral view E head F pronotum G tegmen H hind wing I front femur J hind margin of metanotum and tergal gland K subgenital plate, dorsal view L supra-anal plate, ventral view M male genitalia, dorsal (left) and ventral (right) view N female genitalia, dorsal view. Scale bars: 10.0 mm (A-D, G, H); 2.0 mm (E, F, K, L, N); 1.0 mm (I, J, M).

Figure 7. A-D hind tarsi A Vittiblatta punctata Luo & Wang, sp. nov. B V. ferruginea Luo & Wang, sp. nov. C V. undulata Luo & Wang, sp. nov. D Planiblatta crassispina Luo & Wang, sp. nov. E spermatheca, in order from left to right: V. punctata Luo & Wang, sp. nov., V. ferruginea Luo & Wang, sp. nov., P. crassispina Luo & Wang, sp. nov. Scale bars: 2.0 mm (A-D); 0.5 mm (E).