Microcriodes wuchaoi, Bi, Wen-Xuan & Lin, Mei-Ying, 2014

Bi, Wen-Xuan & Lin, Mei-Ying, 2014, Notes on the genus Microcriodes Breuning, with description of a new species from Xizang, China (Coleoptera, Cerambycidae, Lamiinae, Batocerini), ZooKeys 412, pp. 1-8 : 5-8

Microcriodes wuchaoi sp. n. Figures 5-6, 11-14

Type material.

Holotype: male, "China: Xizang, Motuo, 62K / 2013.VIII.9 / 2780 m / leg. Chao Wu" [white label printed] (SNUC). Paratype: 1 female, "China: Xizang, Motuo, 62K / 2013.VIII.10 / 2780 m / leg. Chao Wu" [white label printed] (SNUC).

Description.

Male (Fig. 5). Body length 25.5 mm, humeral width 8.0 mm. Body dark brown; most of ventral surface and legs evenly covered with dense grayish yellow pubescence. Head with mandible (base and outer face), frons, gena and vertex densely covered with grayish yellow appressed pubescence. Vertex with two vittae behind upper eyelobes only sparsely pubescent. Antenna with scape covered with same kind of pubescence as head; other parts covered with fine grayish pubescence. Pronotum covered with same kind of pubescence as head except for a median longitudinal glabrous area. Scutellum densely clothed with recumbent pubescence. Elytron densely covered with grayish yellow appressed pubescence, provided with two bright yellow, irregularly shaped maculae on basal one-third and basal two-third near lateral margin; with small, round, yellow spots scattered mainly around suture and near apex.

Body elongate, subcylindrical, feebly narrowed posteriorly. Head nearly as wide as pronotal width at base, occiput with several granules anteriorly; eyes emarginate, coarsely faceted; lower eye lobe twice as long as width, about twice as long as gena (Fig. 5a). Antenna long and thick, about 1.8 times as long as body length, approxi mately surpassing elytral apex at tip of sixth antennomere; scape gradually thickened apically; scape and basal third of 3rd antennomere sparsely fringed beneath by suberect short setae; 3rd antennomere 1.8 times as long as scape, subequal to 4th and 5th; relative length of antennomeres as follows: 4.9: 1.0: 8.7: 8.7: 8.5: 7.5: 7.4: 6.4: 5.8: 4.6: 5.5.

Pronotum broader than long, 0.8 times as long as basal width, the width across lateral spines about 1.25 times of basal width; lateral spine short, thickened at base with acute apex; disk with a posteromedial longitudinally oval callus, provided with several distinct setigerous granules at both sides of callus and behind lateral spines.

Scutellum obtuse-triquetrous. Prosternum with prosternal process widened apically; procoxal cavities closed posteriorly. Mesosternal process without tubercle and obliquely sloped in lateral view.

Elytra ca. 1.8 times as wide as pronotal base, 2.4 times as long as humeral width, very slightly convergent toward apices; basal tenth of elytron provided with distinct round granules near suture and humerus, respectively; disk moderately punctured, becoming more shallow near apices.

Leg moderately slender, mesotibia with an external oblique groove near apical third, metatibia reaching elytral apex at apical one-fourth.

Male genitalia (Figs 11-14). Tegmen (Fig. 11) in lateral view moderately curved, ca. 3.8 mm in length, rhombic in shape and widest near middle in ventral view; lateral lobes ca. one-fourth of total length of tegmen, which moderately provided with short setae on apex. Median lobe (Fig. 12) shorter than tegmen; gently curved in lateral view; apex emarginate in antero-dorsal view. Tergite VIII (Fig. 13) slightly broader than long, apex slightly emarginate with short setae. Endophallus in non-everted condition (Fig. 14) moderately long, about 2.7 times as long as median lobe, with 3 membranous parts, BPH, MPH and APH; BMP short, about one-third length of median lobe; MPH long, about 2.1 times as long as median lobe, strongly curved at basal two-fifths, with MT and CT fused with each other, of which delimited from PB by a moderate constriction; MT+CT slightly swollen at apical tenth, sparsely provided with small spicules which are getting denser at apical one-fifth; PB provided with same kind of spicules as MT+CT, which are getting denser at apical half; basal part of PB moderately narrow, ca. 0.5 times as wide as anterior part; APH short, moderately swollen at middle and rounded at apex. Ejaculatory ducts double.

Female (Fig. 6). Body length 29.5 mm, humeral width 9.4 mm. Almost identical to male in general appearance. Antenna about 1.1 times as long as body, surpassing elytral apex at the middle of tenth antennomere; relative length of antennomeres as follows: 4.6: 1.0: 7.4: 6.5: 5.7: 4.9: 5.0: 4.4: 3.7: 3.2: 3.8. Leg slightly shorter, metatibia hardly reach elytral apex.

Diagnosis.

This new species resembles Microcriodes sikkimensis Breuning, 1943 by the general habitus, but is distinguishable from the latter by combination of the following characters: color of integument darker; elytron shorter in relation to the body length; antenna shorter and thicker; lower eye lobe narrower; pronotal lateral spine shorter; pronotal disk with a shiny posteromedial callus; distinctly granulated on pronotal disk and elytral base; elytron with the main maculae relatively short and small, lacking a bright yellow macula near apex.

Etymology.

The new species is dedicated to its discoverer, Mr. Chao Wu. We use the Chinese format "Wu +Chao" (family name + first name) for this name.

Distribution.

China: Xizang (Tibet) Autonomous Region.