Jacobsonina ericonvexa Yao & Che, 2024

Yao, Wen-Wen, Li, Qian-Qian, Li, Lin-Wei, Wang, Zong-Qing & Che, Yan-Li, 2024, Discovery of four new Chinese species of Jacobsonina Hebard, 1929 and Blattella Caudell, 1903 (Blaberoidea: Blattellidae), Zootaxa 5474 (4), pp. 427-440 : 434-437

Jacobsonina ericonvexa Yao & Che , sp. nov.

Fig. 4

Type material. Holotype: CHINA, male; Ruili city, Dehong Dai and Jingpo Autonomous Prefecture , Yunnan Province; 16 Aug 2015; Xinran Li, Zhiwei Qiu leg. Paratype: CHINA, 1 male & 1 female; Yunnan Province, Ruili city, Dehong Dai and Jingpo Autonomous Prefecture , Yunnan Province; 15 Aug 2015; Xinran Li, Zhiwei Qiu leg.

Measurements (mm). Male: pronotum length × width 2.2–2.3 × 2.3–2.4, tegmina length 8.9–9.4, body length 7.5–7.8, overall length 10.8–11.0. Female: pronotum length × width 1.9–2.4 × 2.2–2.5, tegmina length 9.1–9.5, body length 7.5–8.8, overall length 10.8–11.0.

Description. Male. Coloration. Body reddish brown ( Fig. 4A, B ). Ocelli pale white.Antennae brown. Maxillary palpi with fourth and fifth brown, others yellowish brown. Pronotum brown ( Fig. 4E, F ). Head. Interocular space slightly exceeding eye width, distinctly narrower than the width of antennal sockets. Fourth and fifth maxillary palpi equal in length, slightly shorter than the others. Pronotum. Posterior margin of pronotum slightly convex in the middle ( Fig. 4E ). Tegmina and wings. Both fully developed, extending beyond the end of abdomen ( Fig. 4A ). M and CuA of wings without branching, apical triangle narrow ( Fig. 4G, H ). Legs. Anteroventral margin of front femur Type B 3 ( Fig. 4I ), pretarsal claws symmetrical and unspecialized. Abdomen and genitalia. Abdominal tergum unspecialized. Supra-anal plate symmetrical. Paraprocts dissimilar, the left one arm-shaped, the right one with strong spinules on the surface ( Fig. 4J ). Subgenital plate asymmetrical, middle posterior margin with obviously dextral and curved protrusion and on the right side of the protrusion with a figure-like process, scattered with many spinules on the edge ( Fig. 4N ). Styli absent. Hook of left phallomere with V-shaped incision at the terminus. One accessory sclerite of left phallomere blunt triangle-shaped under the hook, the other with its upper margin mane-shaped ( Fig. 4L ). Median phallomere straight, the apex with two short branches, the left one slightly shorter than the right one and with cusp, median phallomere concluded two accessory sclerites, both of them small and irregular ( Fig. 4K ). Right phallomere consisted of three sclerites, anterior sclerite slender, inverted “Y” shaped; middle sclerite sheeted; posterior sclerite incrassate, half of inverted “Q” shaped ( Fig. 4M ). Female. Like the male (with the exception of the postabdomen and genitalia).

Diagnosis. This species resembles Jacobsonina arca Wang, Jiang & Che, 2009 , but differs from J. ericonvexa sp. nov. by: 1) J. ericonvexa sp. nov. with strong spinules on the surface of right paraproct, but absent in J. arca . 2) The subgenital plate with protrusion in J. ericonvexa sp. nov., whereas smooth in J. arca . 3) The accessory sclerites present on both left and median phallomeres in J. ericonvexa sp. nov., whereas the accessory sclerite present only on median phallomere in J. arca .

Etymology. The Latin term “ eri -” means spiny, and “ convexa ” means protruding, referring to the subgenital plate covered with spines and protruding towards the right side.

Distribution. China (Yunnan).

Figures

FIGURE 4. Jacobsonina ericonvexa Yao & Che, sp. nov. A, B, E–N male C, D female A holotype, dorsal view B holotype, ventral view C paratype, dorsal view D paratype, ventral view E head, ventral view F pronotum, dorsal view G tegmen, ventral view H hind wing, ventral view I front femur, ventral view J supra-anal plate, ventral view K median phallomere, ventral view L left phallomere, ventral view M right phallomere, ventral view N subgenital plate, ventral view Scale bars: 5 mm (A, B, C, D, G, H); 1 mm (E, F, I, J, K, N); 0.5 mm (L, M)