Zvenella decussatus Ma & Zhang

Libin, Ma & Yalin, Zhang, 2012, The crickets of genus Zvenella Gorochov, 1988 (Gryllidae: Podoscirtinae) from China, Zootaxa 3597, pp. 57-67 : 63-66

Zvenella decussatus Ma & Zhang sp. nov.

(Figs. I: 4; II: 4a, 4b; III: 4a, 4b; IV: 4a, 4b)

Type material. Holotype male, China: Yunnan, Xishuangbanna, Menghai, 1160m, 27~ 31 May 1974, coll. Zhou Yao and Yuan Feng ( NWAFU).

FIGURE III. Genitalia of species (1–4). 1. Zvenella acutangulata . 2. Zvenella scalpratus sp. nov.. 3. Zvenella aequalis sp. nov.. 4. Zvenella decussatus sp. nov.. a. profile view; b. posterior view.

FIGURE IV. Genitalia of species (1–4). 1. Zvenella acutangulata . 2. Zvenella scalpratus sp. nov.. 3. Zvenella aequalis sp. nov. 4. Zvenella decussatus sp. nov.. a. dorsal view; b. ventral view.

Coloration. Body brown. Head dark brown. Ocellus brown, eyes with dark stripe and the head behind the eyes lighter colored, nearly band shaped. The bottom of face in lighter color and ornamented with dark spots. Ventral portion of head lightly colored. Pronotal disc dark brown and patterned in lighter color medially. Basal field and outside margin of mirror dark brown. Before stridulatory vein, the top lateral corner and the apical of mirror ornamented with lighter spots. Anterior part of angle between dorsal and lateral areas with lighter bands. Apex of femur of each leg and back side dark brown. Forewings with less pubescence and somewhat shiny.

Measurements. BL 17, HW 2.6, PL 2.2, PW 3.2, FWL 12.68, HWL 3, HLL 11, CL 6

Etymology. The specific epithet “ decussatus ” refers to the new species’ hind lateral lobes being close to each other at bottom and almost overlapping medially.

Diagnosis. Lateral ocellus ovoid, and slightly larger than normal. Median ocellus ovoid but slight broader than long. Eye width nearly equal to length. Harp veins four. CuA1 vein branched as two and Sc vein branched as six. Metanotal gland with basal margin narrowed and straight, lateral margin interrupted behind the midpoint and disconnected from posterior portion; posterior margin sinuated and slightly concave medially. Keels slightly Vshaped, but greatly narrowed, each margin sinuate (keels gradually convex at base and sharply concave medially, then expanded posteriorly); apex with two ovoid and wrinkled grooves laterally. Gland less pubescent; short setae distributed along basal margin, the top corner of gland and the posterior portion of keels. Gland depressed and punctured at the side of keels. Anal plate widened and much wider at base (basal corner extended angularly). The basal margin convex and cambered, lateral margin inclined (almost straight) and distal part nearly shaped as rectangle. Median light area wider than long, convex in the middle laterally, its distal notch open. Epiphallus in lateral view, upper process short and widened. Upper apical lobes shortened but directed dorsally, the distal margin elongate and broadly inwardly curved, its ventral margin very short and inclined to the notch (between upper apical lobes and hind lateral ones) which are longer and slightly inwardly curved. Posterior lateral lobes narrowed and very elongate (in posterior view, long and curved, then narrowly separated, and almost overlapping medially. Viewed posteriorly, upper process blade-shaped, its dorsal margin inclined inwards (acute laterally and rounded towards internal portion); notch between two processes deep. Upper apical lobes rounded, lower median notch invisible. Lower apical lobes wider in inner branches and much narrowed and longer in lateral branches.