Lygus fullawayi, 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 : 64-65

60. Lygus fullawayi , new species.

Small, oval, covered with a fine pubescence of pale hairs above. Rostrum not quite reaching apices of hind coxae. Vertex distinctly margined. Color yellow with black clavus, inner apex of corium, and inner angle of cuneus. First two antenna! segments entirely pale.

Head about one third broader across eyes than long, 39: 28; produced only one third as far in front of eyes as length of an eye, the tylus distinctly swollen and lora broadly rounded. Interocular space, in the male, 2.5 times as broad across antenna! concavities as at narrowest portion of vertex; two times as broad in the female. Vertex at narrowest point one fourth as wide as head across eyes in the male, one third as wide in the female. Vertex polished and impunctate, distinctly margined posteriorly, the actual posterior margin strongly depressed behind and beneath this concave ledge. Rostrum reaching but not surpassing hind coxae, proportion of segments 15: 13: 8: 14. Antennae shorter than body from head to tip of membrane, 125: 141, the second segment gradually and only feebly enlarged from base to apex; proportion of segments 20: 59: 31: 15.

Pronotum about as long as head, 29:28, less than twice as broad across humeri as long, 51: 29, collar about as thick as base of second antenna! segment; disk rather evenly convex, the callosities scarcely elevated; disk finely and rather densely punctate; hind margin broadly arcuate and almost imperceptibly sinuate at middle.

Scutellum moderately elevated, sloping posteriorly, the apex acute.

Hemelytra relatively long, the apex of cuneus slightly exceeding tip of abdomen, costai margin of corium evenly arcuate, one fifth longer than width of pronotum. Disks of clavus and corium distinctly, shallowly punctate, disk of cuneus roughened.

Under surface sparsely pubescent. Hind femora about four times as long as greatest thickness. Tibiae with stiff, erect bristles. Hind tarsi with first and second segments subequal.

Left genital clasper of male broadly sickle-shaped, thickened basally and slightly narrowed toward the blunt apex. Right clasper very broad, widening apically, the upper apical angle produced into a short, slender, downward curved hook.

Color yellowish ochraceous, the hind margin of pronotum narrowly white, eyes brown, apical two antenna! segments and apex of rostrum infuscated. Clavus black with brownish outer margins. Corium broadly at inner apex and inner angle of cuneus forming a large black area. Membrane generally embrowned with slightly paler veins. Under surface entirely pale, the abdomen brown dorsally. Apices of hind femora ringed with brown subapically.

Size: male, length 3.5 mm., width 1.5 mm.; female, length 3.5 mm., width 1.6 mm.

Holotype male, allotype female, and one paratype, Mt. Tenjo , May 3, on Piper guahamense, Usinger ; one paratype, Machanao, Aug. 6, on Piper guahamense, Swezey ; one paratype, Fullaway (1206); three paratypes, Tarague, May 17, Usinger. One of these paratypes has a red-tinged scutellum suggestive of the variety described below and the black area of the clavus is confined to the inner half on some specimens. Two specimens, Ritidian Point, April 16, Bryan .

L. fullawayi runs to erimensis Poppius from New Guinea but that species is larger, differently colored, and has the last two antennal segments together somewhat longer than the second.

This species is dedicated to D. T. Fullaway of the Board of Agriculture and Forestry, Honolulu, in recognition of his early insect survey of Guam.