Itara (Itara) dicrana Ma & Zhang, 2015

He, Zhixin & Ma, Libin, 2021, Crickets of the subfamily Itarinae Shiraki, 1930 (Orthoptera: Gryllidae) from China with description of a new species and distribution and critical notes on other species, Zootaxa 4942 (3), pp. 382-408 : 393

Itara (Itara) dicrana Ma & Zhang, 2015

Itara (Itara) dicrana Ma & Zhang, 2015: 536

Holotype. China: Male, Hainan, Jianfengling , 980 m, 7-v-2008, Qiang Fu coll. ( NWAFU) . Paratypes. Male, Hainan, Diaoluoshan , 930 m, 10-iv-2008, Qiang Fu coll. ; male, Jianfengling , 980 m, 5-v-2008, Qiang Fu coll. ; male, Jianfengling , 980 m, 7-v-2008, Qiang Fu coll. ; two males, Jianfengling , 980 m, 9-v-2008, Qiang Fu coll. ; male, Jianfengling , 950 m, 11-v-2008, Qiang Fu coll. ( NWAFU) .

Materials examined. China: Male, Hainan, Jianfeng Ling , 24th July 2018, Lingde Xie coll. ; female, Hainan, Jianfeng Ling , 24th July 2018, Lingde Xie coll ..

Description. Male. Body average size for the genus. Head small. Occiput pubescent and somewhat broad. Median ocellus small, ovoid and lateral ones extended. Antennal scape rounded shield-like. Labrum straight apically. Terminal maxillary palpus and labial palpus rod-like; terminal maxillary palpus longer than third palpus; terminal labial palpus longer than total length of remaining palpi. Pronotal disc flattened and trapezoid; anterior margin somewhat concave, posterior margin almost straight ( Fig. 7A ). Harp area bearing 4–5 veins. False veins distributed in harp field and mirror. Forewing broad and apically rounded ( Fig. 7A ). Apical field slightly shorter and nearly equal to width of forewing and armed with 7 branches (sometimes 6 or 8) ( Fig. 7A ). Visible part of hind wings longer than hind tarsus.

Metanotal gland armed with transverse and sinuate convexity anteriorly, shallow concavity medially and posterior part armed with a rather large convexity ( Fig. 7C ). Anal plate rather short and tongue-shaped, bearing a shallow groove medially and rounded lateral edges ( Fig. 7D ).

Male genitalia ( Figs. 7 E–7G). Dorsal lobe of basal epiphallus bisinuate; lateral process somewhat thickened and expanded apically; median process transversely widened, bisinuate and bearing deeply and widely concave distally ( Fig. 7E ). Lateral margins of epiphallus almost paralleled and broadly separated ( Fig. 7F ). In lateral view, epiphallic apex somewhat expanded, armed with two large denticles and without small denticles ( Fig. 7F ); in dorsal view, epiphallic apex with both arched and concave margins inside and outside ( Fig. 7E ).

Female. Body slightly smaller than male ( Fig. 7B ). Ovipositor very longer than hind tibia; its apex rather acute and episternites blunt ( Figs. 13F , 14F ).

Coloration. Head colored dark dorsally with lighter frons and clypeus.

Measurements. Male. BL 19.32, HW 3.06, PL 2.46, PW 4.34, FWL 15.27, HWL 5.06, 4.26. Female. BL 19.02, HW 3.02, PL 2.12, PW 3.78, FWL 14.93, HFL 10.00, HTL 7.43, HML 4.51, OL 10.24.

Remarks. This species is similar to I. (I.) vietnamensis and I. (I.) aperta , but the epiphallic apex possesses two large teeth at bottom and lacking other small denticles.

Figures

FIGURE 7. I. (I.) dicrana. A. Habitus photograph of male. B. Habitus photograph of female. C. Metanotal gland. D. Anal plate. E–G. Male genitalia. E. Dorsal view. F. Lateral view. G. Ventral view. Scale bar: 1 cm.

FIGURE 13. The right half of ovipositor apex. A. I. (I.) communis. B. I. (I.) vietnamensis. C. I. (I.) minor. D. I. (I.) acri sp. n. E. I. (I.) aperta. F. I. (I.) dicrana. G. I. (I.) basidentata. H. I. (N.) nocturna.

FIGURE 14. The left half of ovipositor apex. A. I. (I.) communis. B. I. (I.) vietnamensis. C. I. (I.) minor. D. I. (I.) acri sp. n. E. I. (I.) aperta. F. I. (I.) dicrana. G. I. (I.) basidentata. H. I. (N.) nocturna.