Felisacus crassicornis, Usinger, 1946

Usinger, Robert L., 1946, Hemiptera Heteroptera of Guam, Insects of Guam II, Honolulu, Hawaii: Bernice P. Bishop Museum, Bulletin 189, pp. 11-103 : 70-72

67. Felisacus crassicornis , new species ( fig. 16 ).

Elongate, shining, the head broader than long, first antenna! segment shorter than pronotum and distinctly swollen subbasally.

Head about one fifth broader across eyes than long including antenniferous tubercles, 22: 18; a little more than two thirds as broad immediately behind eyes as width across eyes, 16:22, and thence gradually narrowed to base of head, ratio of width behind eyes to width at base, 16: 13. Eyes small, less than half as wide as interocular space, 5: 12. Anterior portion of head strongly vertical, abruptly tapering to narrow apex. Rostrum scarcely attaining hind coxae. Antennae shorter than body, 113: 138; the first segment shorter than pronotum, 26: 29, a little longer than width of head, 26: 22, thickest at basal third and tapering to just before apex, the apex slightly thicker than slender subapex; second segment slender, cylindrical; third and fourth slender and curved; first segment with only a few inconspicuous hairs, remaining segments distinctly pubescent; proportion of segments 26: 29: 38: 20.

Pronotum over half again as long as head, 29: 18; the apical collar one seventh the total length of pronotum, antemedian stricture marked by deep punctures across the entire disk, the punctures at middle placed slightly forward. Width across humeri over twice the width at anterior margin, 34: 15, hind margin nearly straight, only very feebly concave. Scutellum moderately elevated, smooth except for two large punctures on basal margin.

Hemelytra long, the costal margin of corium slightly less than twice as long as pronotum, 54:29, thick and feebly arcuate, especially posteriorly. Cuneus a little less than one third as long as corium, 19: 54. Veins of membrane prominent. Right genital clasper of male very slender, sickle-shaped. Left clasper short, half as wide as long, feebly curved on outer edge.

Color ochraceous to fulvous, the eyes red, the sides of hind lobe of pronotum broadly brown, the inner, elevated portion of clavus light brown, inner margins of corium adjacent to and beyond apex of clavus brown, membrane faintly clouded, the veins dark. Costa! margins white to ochraceous, the disk of corium subhyaline, partially suffused with white and finely, sparsely punctured. Clavus pale fulvous, subhyaline. First antenna! segment ochraceous at middle, fulvous basally and black at apex. Second narrowly black at base and thence ochraceous, becoming infuscated apically. Apical segments dark brown to black. Under surface in great part testaceous, the legs pale with lightly infuscated tarsal apices.

Size: female, length 3.5 mm., width (hemelytra) 1 mm.; male, length 2.9 mm., width (hemelytra) 0.75mm. TODO

Holotype female, one female paratype, Machanao, Nov. 25, Swezey, allotype male, Machanao, June 4, Usinger; one female paratype, Guam, Fullaway (1210). Seven specimens, two damaged, are at hand from Upi Trail, May S, on ferns, Swezey and Bryan.

This species is related to magnificus Distant and pulchellus Poppius in having a subbasally swollen first antenna! segment, but these species differ entirely id color; and these and a pale species which I collected at Los Banos differ in having a narrower head which is scarcely broader than long. I have specimens of magnificus from Amboina and Java (Muir).

Figures

FIGURE 16- Felisacus crassicomis: dorsal view.