Phlugiolopsis brevispina, Pan & Bian, 2024

Pan, Yangyang & Bian, Xun, 2024, Four new species of the genus Phlugiolopsis (Orthoptera: Tettigoniidae: Meconematinae) from Guangxi, China, Zootaxa 5443 (2), pp. 287-297 : 289-291

Phlugiolopsis brevispina sp. nov.

ü刺吟ª

Figures 3 – 4

Description. Male. Body small. Fastigium verticis conical, apex obtusely rounded, dorsal surface with 1 thin furrow ( Fig. 3A ). Eyes nearly semiglobular, projecting outwards. Apical segments of maxillary palpi longer than subapical ones, apices faintly inflated ( Fig. 3B ).

Pronotum elongate, anterior margin of pronotum arced, posterior margin obtusely rounded, protruding backward; lateral lobes longer than deep, narrowing to backward, humeral sinus absent ( Fig. 3B ). Tegmina overlapped and concealed beneath pronotum, or slightly surpassing the posterior margin of pronotum, reaching the middle area of second abdominal tergite, apices rounded; hind wings absent.

Procoxae with 1 spine; all femora unarmed, apices of genicular lobes of postfemora obtusely rounded. Ventral surface of protibiae with 3–4 internal and 4–5 external spines, apices with 1 pair of ventral spurs; protibial tympana oval, opened on both sides. Mesotibiae ventrally with 4 internal spines, 5 external spines and 1 pair of apical spurs. Posttibiae with 23–30 internal spines and 27–29 external spines on dorsal surface, ventral surface with 2–4 internal spines and 3–5 external spines, apices with 1 pair of dorsal spurs and 2 pairs of ventral spurs.

Tenth abdominal tergite with 1 triangular concavity in middle of posterior margin ( Fig. 3E ). Cerci densely setose; basal half stout, slightly narrowing in lateral view ( Fig. 3G ), interno-dorsal margin widely expanded which extending to ventral surface in middle area, the apex converging to a small spine ( Fig. 3H ); apical half slender and spine-shaped which slightly incurved, apices subacute ( Fig. 3E ). Subgenital plate wider than long, basal margin faintly arched with a triangular membranous area in the middle, lateral margins slightly curved dorsally, posterior margin roughly triangular projecting ( Fig. 3I ). Styli densely setose and subconical, slightly curved forward, apices obtuse, inserted at the subapical area of subgenital plate on ventral surface ( Fig. 3H ). Genitalia membranous.

Female. Appearance is similar to male. Lateral margins of eighth abdominal tergite with apices protruding posteriorly; ninth and tenth abdominal tergites narrow, posterior margin of tenth abdominal tergite with a small concave ( Fig. 4C ). Epiproct small, semi-oval, dorsal surface faintly concave. Cerci short and conical ( Fig. 4C ). Ovipositor moderately upcurved, dorsal and ventral margins smooth; apices of dorsal valvulae acute, apices of ventral valvulae with a small inconspicuous hook ( Fig. 4D ). Subgenital plate triangular in ventral view, lateral margins rolled-up and strongly converging, apex angular ( Fig. 4E ).

Coloration. Body yellowish brown. Eyes black. Scape and pedicel dark brown; flagellar segments with brownish rings on each segment. Dorsal surface of head with 2 pairs of longitudinal brown stripes, the lateral stripes extending to the posterior margin of pronotum. Disc of pronotum brown with between lateral stripes blackish brown. Apices of femora and basal areas of tibiae dark brown. Apices of tegmina dark brown. Abdominal tergites dark brown. Subgenital plate brown.

Material examined. Holotype: male, Liuwanshan, Yulin , Guangxi, August 9, 2022, coll. by Qianwen Zhang and Shan Li . Paratypes: 1 female, the other information as holotype; 1 male, Darongshan, Beiliu , Guangxi, August 5, 2022, coll. by Qianwen Zhang and Shan Li ; 1 male, Darongshan, Beiliu , Guangxi, August 9, 2022, coll. by Qianwen Zhang and Shan Li ; 2 males and 1 female, Wanggangshan, Qinzhou , Guangxi, August 14, 2022, coll. by Qianwen Zhang and Shan Li .

Measurements (mm). Body: ♂ 7.9 – 9.0, ♀ 10.6 – 11.2; pronotum: ♂ 4.0 – 4.1, ♀ 4.3 – 4.6; tegmen: ♂ 2.3 – 2.7, ♀ 2.6 – 2.9; postfemur: ♂ 8.0 – 9.9, ♀ 9.3 – 10.0; ovipositor: 4.5–5.1.

Distribution. Guangxi (Beiliu, Qinzhou, Yulin).

Discussion. The new species can be distinguished from Phlugiolopsis brevis Xia & Liu, 1993 (Chinese name: üḡ吟ª) by the internal margin of basal half of male cerci widely expanded, the apex terminating into a small spine on ventral surface of middle area ( Fig. 3H ); female subgenital plate triangular, posterior margin angular, ventral surface not concave.

Etymology. The name of the new species is derived from male cerci with a small spine on ventral surface in middle area.

Figures

FIGURE 3. Phlugiolopsis brevispina sp. nov. Male: A–B. head and pronotum: A. dorsal view, B. lateral view; C. apex of postfemur in lateral view; D–I. apex of abdomen: D. lateral view, E. dorsal view, F, G. ventro-lateral view, H, I. ventral view.

FIGURE 4. Phlugiolopsis brevispina sp. nov. Female: A–B. head and pronotum: A. dorsal view, B. lateral view; C. apex of abdomen in dorsal view; D. apex of abdomen and ovipositor in lateral view; E. subgenital plate in ventral view.