Felisacus ochraceus, 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 : 69-70

66. Felisacus ochraceus , new species ( fig. 15 ).

Elongate, shining, pale ochraceous with brown eyes, and brown inner clavus and inner margin of corium apically, the inner half of cuneus red or yellow. Eyes longer than postocular portion of head.

Head almost half again as broad across eyes as long, 24: 17, interocular space less than twice as wide as an eye, 10: 7. Eyes very large, longer (as seen from above) than length of postocular portion of head, 9:8. Head cylindrical to basal sixth and then arcuately flaring to hind margins of eyes where the head is two thirds as wide as width across eyes. Rostrum reaching beyond middle of mesosternum. Antennae a little longer than body, 159: 150, first segment cylindrical, only sparsely pubescent, second more slender, the last two very slender and curved; proportion of segments 38: 48: 53: 20.

Pronotum over half again as long on median line as head, 28:17; about one fourth broader across humeri than long, 34: 28, the disk evenly convex on both anterior and posterior lobes except for depressed areas sublaterally near humeri; strongly constricted in front of middle and punctate in the constriction. Hind margin distinctly, roundly emarginate in front of scutellum.

Hemelytra long, the corial margin a little over twice as long as total length of pronotum, 63: 30, very feebly arcuate posteriorly, the costal margins nearly parallel.

Right genital clasper of male straight on basal half, tapering and sickle-shaped on apical half and bent posteriorly. (Broader at base and tapering on apical two thirds in felicicola Kirkaldy.) Left clasper broad on basal half, abruptly narrowed and slender on apical half, this apical arm feebly curved inward and upward.

Color testaceous to ochraceous, the hind margin of pronotum at bases of clavi, inner half of clavus, inner margins of corium adjacent to apex of clavus and extending to cuneus, brown. Cuneus reddish or yellow on inner half. Costa! margins of corium at least apically and veins of membrane ochraceous. Elsewhere clear hyaline. Eyes brown to black. First antenna! segment white on basal fourth, fulvous apically, second fuscous tinged with red on apical half, third and fourth infuscated. Under surface pale yellowish testaceous. The legs pale with infuscated tarsal apices.

Size: male, length 3.75 mm., width (hemelytra) 0.9 mm.; female, length 4 mm., width (hemelytra) 1 mm.

Holotype male, and allotype female, Upi Trail , May 5, Usinger ; three paratypes, same data as above, but collected on ferns, Swezey; 10 paratypes, Piti, Aug. 24, on ferns, Swezey; eight specimens, Ritidian Point, April 16, Bryan.

F. felicicola Kirkaldy, which I have from Rewa, Fiji, Muir is very similar to ochraceus but has smaller eyes (shorter than postocular portion of head, 8: 9), a slightly longer first antenna! segment and proportionately shorter second antenna! segment (ratio of first and second, 39: 44). The color of felicicola is distinctly fulvous on head.and pronotum and the right genital clasper of the male differs as mentioned above. I have a series from Amboina which differs slightly from either of these, but clearly pertains to the same group of the genus.

Figures

FIGURE 15.-—Felisacus ochraceus: dorsal view.