Filchnerella huiningensis, Wang & Chen & Li, 2023

Wang, Li, Chen, Jian-Yu & Li, Xin-Jiang, 2023, A new species of the genus Filchnerella Karny, 1908 (Orthoptera: Acridoidea: Pamphagidae) from China, Zootaxa 5319 (1), pp. 141-144 : 141-143

Filchnerella huiningensis sp. nov. ( Figs. a–h )

Type material: Holotype: J, Taohuashan , Huining County, Gansu Province, China. 35°68 ‘N, 105°08 ‘E, 1944 m, 2006–VII–23, collected by Dao-Chuan Zhang and Yong-Chao Zhi. Paratypes: 6 J and 7 ♀, same as the holotype.

Male ( Figs. a–e ) Body medium-sized (fig a), with hairs, especially on legs. Vertex short and wide, width between two eyes is about 3.9 times as wide as frontal ridge between bases of antennae, fastigial furrow present, dorsal side of head depressed, with granular and club-like projection, preocellar foveolae irregular. Frontal ridge distinct, with a groove along its whole length, between the bases of antennae slightly projecting forward, constructed slightly under ocellus, widened gently downwards, widen distinctly on base of labrum. Lateral facial carinae distinct, but invisible in dorsal view. Eyes small, near circle, subocular furrow 1.25 times vertical diameter in length. Antennae filiform, 18–19 segments, length nearly equal to the total length of head and pronotum, the length of a segment 2.3 times its width in the middle part. Pronotum rough, with short subuliform projection, anterior and posterior margin angled protruding, two very high projection in front part on lateral lobes (fig c), median carina elevated into lamellate, strongly incised on the posterior transverse groove, metazona 1.2 times prozona in length, median carina incised by the 2 transverse grooves in prozona, median carina of metazona arc-ike raised. Prosternum with a strong lamellate process on anterior margin, having obvious and shallow emarginate in the middle. Interspace of mesosternum lateral lobes trapezoid, the narrowest part wider 1.3 times than the broadest part of lateral lobes. Tegmina reaching the posterior margin of fifth abdominal tergite or middle of hind femur, length 2.5 times maximum width. Hind femur wide and compressed, length is 2.9 times the width of broadest part, upper median carina of hind femur serrated, with arc-like concave near apex of knee (fig d). Hind tibia with apical spine on inner and outer side, with 10 spines on external side and 8–9 spines on internal side (including apical spine). Arolium between claws of tarsus large, its apex reaching to the middle of claws. Tympanum organ developed, tympanal aperture expanded, tympanic flap small. Krause’s organ near triangle, with thinly rugose on surface. Abdomen with a row of tubercles in the middle. Epiproct near tongue-like, with longitudinal groove in the middle. Cercus long conical, curved inward. Subgenital plate short conical, apex acute (fig e). Epiphallus shield like, with 8–10 denticle on lateral plates, ancorae smaller (fig b).

Female (figs. f–h) Body thick and larger than male. Vertex extremely wider, the width between two eyes is about 4.5 times as wide as frontal ridge between bases of antennae (fig g). Length of antennae shorter than the length of head and pronotum together. Tegmina lobi-form, dorsally widely separated, apex reaching or not the posterior margin of first abdominal tergite (fig h), not cover the Tympanum organ completely, slightly shorter than metazona of pronotum. Cercus short conical. Subgenital plate project at an angle in the middle of posterior margin. Ovipositor valves short, hooked, apex acute, outer margin of lower valve with concave near the apex (fig f).

Coloration. Body filemot. Inner side of hind femur dark blue, lower margin red with slightly dark blue, upper margin black, red in pergendicular, inner knee lobe red. Inner side of hind tibia red on the base and end, dark blue on the middle.

Measurements (in mm): Length of body: J18.7–21.6, ♀ 30.6–24.7. Length of pronotum: J5.4–7.7, ♀ 8.8–10.4. Length of tegmina: J6.3–8.3, ♀ 3.3–5.3. Length of hind femur: J10.1–11.8, ♀ 12.6–14.1.

Diagnosis. The new species is allied to Filchnerella rubimargina Zheng, 1992 . The major differences are in Table 1 .

Etymology. The specific epithet is named after Huining, the type locality.

Figures

FIGURES a–m. Filchnerella huiningensis sp. nov. a. Body in lateral viewJ; b. Epiphallus; c. Lateral view of pronotum J; d. Hind femur inner side J; e. End of abdomen in dorsal view J; f. Body in lateral view ♀; g. Head in frontal view ♀; h. Lateral view of tegmina ♀. Filchnerella rubimargina Zheng, 1992. i. Lateral view of pronotum J; j. Hind femur inner side J; k. Epiphallus; l. Head in frontal view ♀; m. Lateral view of tegmina ♀.