Progoniogryllus rotundus, Ma & Jing & Zheng, 2021

Ma, Libin, Jing, Xuan & Zheng, Yanna, 2021, Integrative taxonomy base on morphology and molecular phylogeny with description of a new genus, Progoniogryllus gen. nov. and two new species (Orthoptera: Grylloidea: Gryllidae; Gryllinae), Zootaxa 4995 (3), pp. 523-536 : 531-532

Progoniogryllus rotundus sp. nov.

Type materials. Holotype. Male. China: Xizang, Motuo, Beibeng , vi-1-2019, Ma, Libin coll. ( SNNU) . Paratype. China: 2 males, Xizang, Motuo, Beibeng , vi-1-2019, Ma, Libin coll. ( SNNU) ; 1 male, Xizang, Chayu, Cibagou , vi-7-2019, Lv, Lin coll. ( SNNU) ; 1 female, Xizang, Motuo, Beibeng , v-31-2019, Ma, Libin coll. ( SNNU) ; 1 male, Yunnan, Lushui, Pianma , vi-20-2019, Ma, Libin coll. ( SNNU) ; 1 female, Yunnan, Lushui, Pianma , vi-19-2019, Ma, Libin coll. ( SNNU) .

Measurements. Male (n=5): BL 10.09±0.61, HL 1.76±0.09, HW 3.05±0.08, PL 2.06±0.08, PW 3.29±0.17, FWL 5.02±0.49, FWW 3.5±0.18, MTL 2.69±0.28, HFL 6.88±0.21; female (n=5): BL 10.84±0.59, HL 1.8±0.23, HW 3.14±0.39, PL 2.35±0.20, PW 3.33±0.25, MTL 2.33±0.36, HFL 7.50±0.25, OL 7.80±0.66

Description. Male. Body size small for Gryllinae species ( Fig. 5A ). In frontal view, head higher dorsoventrally, vertex rounded and convex ( Fig. 9D ). Dorsally viewed, occiput short, round and convex; vertex inclined. Frons convex and narrow (almost equal to the width of antennal scape), and arched in lateral view. A shallow groove present between bottom of frons and top of clypeus (along with epistomal suture). Labrum shield-like with lateral margins acutely convex and apically pointed round. End section of maxillary palpus conspicuously longer than the third; end section of labial palpus obviously longer than the total length of anterior two. Pronotum long and obviously longer than head. In dorsal view, pronotum somewhat trapezoid-like, anteriorly narrower than the posterior. Anterior margin of pronotum slightly concave and posteriorly straight. Disc flatten and possessing with a middle groove, and laterally fold down. Lateral lobes depressed posteriorly. Elytra broad and flatten, conspicuously wider than hind margin of pronotum. Basal field somewhat wide but short and almost as half length of pronotum. Oblique veins two. Diagonal vein arched. Mirror transverse and obviously wider than length. Dividing vein separating hind part oval-like. Apical field distally rounded, very short and somewhat a half length of mirror, and possessing two rows of irregular cells. Hind wings absent. Cercus long and almost as long as hind tibia. Outer tympana large and long oval-like; inner tympana absent and corresponding part pit-like. Hind femur slightly longer than tibia. Subapical spurs five pairs and inner ones obviously shorter than the outer proximally.

Body pubescent, brown and ornamented with yellowish-brown and dark-brown patterns. Lateral areas of head and pronotum possessing continuous yellowish-brown stripes ( Fig. 9D ). Lateral lobes of pronotum almost dark brown with bottom margin yellowish-brown. Maxillary palpus colored dark and labial palpus colored light. Elytral disc yellowish-brown and most of lateral lobes colored dark brown. Fore and middle legs yellowish-brown and ornamented with brown patterns, and on femur and tibia ornamented with dark brown spots dorsally and laterally, and, especially, dark brown spots almost forming a ring on middle tibia. Hind legs and cercus colored brown and ornamented with dull yellowish brown. Abdomen dark brown dorsally and laterally, and ventrally colored yellowish-brown and ornamented with brown spots. Subgenital plate colored brown.

Epiphallus almost without median lobe and slightly extended outward at the middle ( Fig. 6A–C ). Lateral lobes of epiphallus short and obtuse, the gap between them broad and somewhat rectangular. In lateral view, included angle between median and lateral lobe nearly arched. Ectoparamere short and slightly upward curved. In ventral view, ectoparamere comprise of two branches proximally, combined medially and curved upward.

Female. Body size and coloration similar to male ( Figs. 5B ; 9C ). Brachypterous, portions after mesonotum uncovered. Ovipositor long and slightly longer than cercus. Some samples macroperous and armed with normal elytra ( Fig. 4B, D ).

Etymology. The name refers to its elytra armed with rounded margin apically, and its somewhat oval-like body.

Remarks. Holotype and most specimens light brown and there are also some specimens that are darker. Compared with light ones, patterns or stripes of those dark samples are not clear or absent, and the coloration of legs and abdomen are darker. In addition, this species possesses rounded apical end of the tegmina.

Figures

FIGURE 4. Ovipositor of Progoniogryllus species. A, B. Inside of ovipositor apex in lateral view; C. D. Outside of ovipositor apex in lateral view; A, C. P. directus sp. nov.; B, D. P. rotundus sp. nov.

FIGURE 5. Bodies of P. rotundus sp. nov. A. male; B. female. Scale bar: 10 mm

FIGURE 6. Genitalia of P. rotundus sp. nov. A. dorsal viewed; B. lateral viewed; C. ventral viewed.

FIGURE 9. Heads of Progoniogryllus. A–B. P. directus sp. nov. A. female; B. male; C–D. P. rotundus sp. nov. C. female; D. male.