Jacobsonina plicata 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 : 432

Jacobsonina plicata Yao & Che , sp. nov.

Fig. 2

Type material. Holotype: CHINA, male; Jinghong City , Yunnan Province; 8 May 2015; Jianyue Qiu leg. Paratype: CHINA, 1 male & 1 female; Jinghong City , Yunnan Province; 8 May 2015; Jianyue Qiu leg.

Measurements (mm). Male: pronotum length × width 1.9–2.2 × 2.1–2.5, tegmina length 8.5–9.3, body length 8.7–9.1, overall length 10.8–11.2. Female: pronotum length × width 2.1 × 2.3, tegmina length 8.9, body length 9.1, overall length 11.3.

Description. Male. Coloration. Body yellowish brown ( Fig. 2A, B ). Ocelli pale pink. Antennae brown. Fourth and fifth maxillary palpi brown, the others yellowish brown. Pronotum yellowish brown. Head. Interocular space slightly exceeding eye width, distinctly narrower than the width of antennal sockets. Fourth and fifth maxillary palpi of the same length, slightly shorter than the others. Pronotum. Posterior margin of pronotum slightly convex in the middle ( Fig. 2F ). Tegmina and wings. Both fully developed, extending beyond the end of abdomen ( Fig. 2A ). M of tegmina without branching; M and CuA of wings without branching, apical triangle narrow ( Fig. 2G, H ). Legs. Anteroventral margin of front femur Type B 3 ( Fig. 2I ), pretarsal claws symmetrical and unspecialized. Abdomen and genitalia. Abdominal tergum unspecialized. Supraanal plate symmetrical, middle posterior margin slightly concave. Paraprocts dissimilar, both with finger-like protrusions, but the right with strong spinules on the surface ( Fig. 2J ). Subgenital plate asymmetrical, left part with many spinules, right part with few or no. Accessory sclerites of left phallomere irregular square ( Fig. 2L ). Median phallomere curved in the middle, with a narrowed apex bending to left in ventral view; accessory sclerites of median phallomere composed of two parts, left sclerite leaf-shaped; right sclerite irregular, one large and one small stuck together ( Fig. 2K ). Right phallomere composed of four sclerites, three sclerites gathered and one sclerite with many folds next to it: anterior sclerite slender, inverted “Y” shaped; middle sclerite irregular; the rightmost sclerite incrassate, “Q” shaped ( Fig. 2M ). Female. Like male (with the exception of the postabdomen and genitalia).

Diagnosis. This species resembles J. aliena (Brunner von Wattenwyl, 1893) in general appearance but can be distinguished from J. aliena by the following characteristics: 1) J. plicata sp. nov. with an elongate finger-like protrusion extending from left to right along the posterior margin of subgenital plate, while a small spherical protrusion present in J. aliena . 2) Accessory sclerites of left phallomere irregular square in J. plicata sp. nov., whereas that of J. aliena tufted. 3) The accessory sclerite of right phallomere with many folds in J. plicata sp. nov., but absent in J. aliena .

Etymology. The specific name is derived from the Latin word “ plicatus ”, which refers to one of the accessory sclerites of the right phallomere with many folds.

Figures

FIGURE 2. Jacobsonina plicata 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)