Pheude Omar & Zhang

Omar, Youssef M., Zhang, Runzhi & Davis, Steven R., 2014, The new genus Pheude (Coleoptera, Curculionidae, Cossoninae) with description of a new species from mainland China, ZooKeys 466, pp. 29-41 : 30

Taxon classification Animalia Coleoptera Curculionidae

Pheude Omar & Zhang gen. n. Figs 1-4, 5-9, 10-13, 14-23, 24-32, 33-38

Type species.

Pheude punctatus Omar & Zhang, here designated.

Diagnosis.

Rostrum nearly parallel-sided, rostrum without any keel ventrally, longer than wide (more than 2 × width), with longitudinal furrow dorsally; antenna inserted at basal one-third of rostrum; scape extending beyond hind margin of eye, funicle with seven articles; pronotum longer than wide, base bisinuate, with longitudinal median crest from base to apex; scutellum visible; apical margin of elytra expanded and lower than level of venter, elytral apical margin gently rounded and flattened; third tarsomere entire.

Description.

Form slightly arched, widest approximately at elytral humeri, slightly tapered both apicad and caudad.

Mouthparts. Maxilla (Fig. 14) with 3-segmented palpus, basal two segments each with a single lateral seta; stipes and palpiger each with a single lateral, large seta; galeo-lacinial complex with large, paddle-shaped setae along mesal margin; elongate, slender setae along antero-mesal margin of lacinia. Labium (Fig. 15) with 2-segmented palpus; basal segment with one lateral seta; prementum with two lateral setae on both sides; postmentum with two setae before latero-distal margin on ventral side. Mandibles falcate, left mandible (Fig. 16) with one tooth and molar region, right mandible (Fig. 17) with two teeth and molar region.

Proventriculus as in Figure 18.

Rostrum longer than broad, punctures with minute suberect setae, with large, deep, longitudinal furrow beginning behind eyes and extending to point of antennal insertion, forming slight cleft in rostrum; point of antennal insertion at basal 1/3 of rostrum; scrobe well-defined, deep, dorsal margin directed towards middle of eye but not touching eye, subsequently extending ventrally below eye.

Antennae long, stout; scape: clavate, extending slightly beyond hind margin of eyes; funicle with seven articles; article one (pedicel) longer than others, as well as longer than own width; article two small, shorter than others and shorter than own width; club with three articles, appearing to have four with apical constriction, shorter than funicle.

Head small, strongly constricted behind eyes; frons as broad as base of rostrum, with long longitudinal furrow extending midway on rostrum. Eyes oval, strongly convex.

Pronotum longer than wide, constricted behind apex.

Scutellum visible, deeply sunken, subcircular, finely punctured.

Elytra wider than pronotum, transversely concave immediately after antero-dorsal margin; basal margin forming transverse keel from sutural interval to humeri. Humeri umbonate, truncate. Intervals elevated from base to apex; striae wider than intervals, with deep circular punctures, distance between punctures ca. 1.5-2.0 × puncture diameter; apex of elytra (from declivity to apex) expanded laterally and extending slightly below level of abdomen; apices gently rounded and slightly upturned.

Hindwings (Fig. 23) slender, lacking jugal area (anal lobe); Rr slender, abbreviated, not reaching rcm; rc absent; 1rs triangular and larger than 2rs; R3 present, forming a very thin, sclerotized stripe; Cu1 not reaching posterior margin of wing; r-m absent; A simple, other anal veins absent.

Mesothorax (Fig. 20). Mesonotum typical of other cossonines; axillary cord enlarged, lateral margins rounded.

Metathorax (Fig. 21). Metanotum with metascutum reaching posterior margin of notum; scutellar groove reaching posterior margin of notum; allocrista angular at antero-mesal angle.

Thoracic sterna punctured throughout, distance separating punctures ~1.0-2.0 × puncture diameter; mesoventrite relatively small, coxae separated by distance of 0.5 × diameter of coxa, with short, straight intercoxal projection; metaventrite long; coxae separated by distance approximately equal to diameter of metacoxa, coxae with medio-transverse furrow (Fig. 35). Metendosternite (Fig. 22): with long, narrow hemiductus; furcal arm narrow, apex bifid; anterior tendons inserted near base of furcal arms.

Legs. Femur strong, longer than tibia, entirely punctured; tibiae parallel-sided; protibia with distal comb of setae along inner margin; tarsus with five articles, articles one and two equal, three entire, feebly longer and wider than one and two combined; five slightly curved, glossy.

Etymology.

The name of the new genus honors Pierre Heude (1836-1902), a French Jesuit and zoologist who came to China in 1868. Heude was a cofounder of the first natural history museum in China, and the oldest insect specimens housed in the CAS Institute of Zoology are from this museum, often collected by Octavie Piel. The gender is masculine.