Apterolarnaca quadrimaculata Bian & Shi, 2016

Xun, Bian, Rong-Sheng, Lu & Fuming, Shi, 2016, Review of the genus Apterolarnaca Gorochov (Orthoptera: Gryllacrididae) with proposal of a new synonym and description two new species, Zootaxa 4079 (3), pp. 357-362 : 360-361

Apterolarnaca quadrimaculata Bian & Shi sp. nov.

( Fig. 2 , Map 1)

http://lsid.speciesfile.org/urn:lsid: Orthoptera .speciesfile.org:TaxonName:474288 Description. Male. Body medium, wingless. Frons smooth. Fastigium verticis about 1.7 times as wide as scape ( Fig. 2A ). Eyes ovoid; ocelli inconspicuous. Scape as long as eyes, pedicel about two thirds the length of scape ( Fig. 2A ). Apical segment of maxillary palpi slightly longer than subapical segment, apex slightly inflated. Anterior margin of pronotum projected in the middle, posterior margin truncate, lateral lobes longer than high, ventral margin undulating, humeral sinus absent ( Fig. 2C ). Fore coxae with 1 small spine; fore and middle femora unarmed on ventral surface. Hind femora with 7 robust spines on internal margin, the apical 5 spines obviously longer than others; external margin with 3–4 spines positioned in apical half ( Fig. 2E ). Fore tibiae with 5 pairs of spines (including 1 pair of apical spines), apical spines minute; middle tibiae with 4 pairs of spines but smaller in size; hind tibiae arched curved, dorsal surface of with 5–6 tubercle swellings, apices with 1 pair of dorsal spines and 2 pairs of ventral spines ( Fig. 2E ). Second and third abdominal tergites with 2 rows of transverse stridulatory teeth on lateral margins separately. Ninth abdominal tergite divided in the middle, forming two triangular lateral lobes, its apices spine-shaped, directing downwards and slightly inwards ( Fig. 2D, F ). Tenth abdominal tergite interrupted in the middle. Cerci short, conical, slightly upcurved, its apices obtuse ( Fig. 2G ). Basal margin of male subgenital plate almost straight, posterior margin with 1 U-shaped concavity ( Fig. 2G ), the lateral margins forming 2 lobes, its apices bifurcate, the internal lobes obviously curved inwards, the external lobes directing upwards ( Fig. 2F ).

Female. Unknown.

Coloration. Body yellowish. Eyes brown. Face with 4 black spots, genae with 2 vertical stripes, fastigium verticis with 1 black median spots ( Fig. 2A ), occiput black ( Fig. 2B ). Basal and apical areas of scape with 1 black ring separately; pedicel with 1 black ring in the middle; flagellum black brown. Margins of pronotum, mesonotum and metanotum black, pronotum with 1 median stripe ( Fig. 2B ). Apical area of all femora, basal and apical areas of all tibiae, and spines of hind legs black ( Fig. 2B, E ); spines of fore and middle tibiae and all tarsi blackish. Apices of lateral lobes of tenth abdominal tergite brown ( Fig. 2F ).

Measurements (mm). BL: 16.5, PL: 4.5, HFL: 10.5.

Material examined. Holotype: male, Nabang, Yingjiang , Yunnan, 13 September, 2015, Wang Yutang.

Distribution. China (Yunnan).

Etymology. Name derived from Latin quadr plus macul, referring to the four black spots of face. Discussion. The new species differs from congeners by: face with four black spots; all femora, basal and apical areas of all tibiae black; mesonotum and metanotum without black median stripes; abdominal tergite yellow.

MAP 1. Distribution of the Apterolarnaca species.

Figures

FIGURE 2. Apterolarnaca quadrimaculata Bian & Shi sp. nov. male: A. head in frontal view; B – C. head and thorax: B. in dorsal view, C. in lateral view; D. apex of abdomen in apico-dorsal view; E. right leg and apex of abdomen in lateral view; F. apex of abdomen in apico-ventral view; G. subgenital plate in ventral view.