Orthotylellus pallescens, 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 : 80-81

76. Orthotylellus pallescens , new species.

Oval, rather uniformly pale in color with long, fine hairs above intermixed with short, appressed silvery hairs.

Head two thirds as long as broad, 15:22; produced in front of eyes almost as far as length of an eye, 7: 8; eyes less than half as wide as interocular space, 5: 12; disk moderately convex, shining, with long hairs very sparse, the short, appressed, silvery hairs more conspicuous. Vertex feebly transversely impressed just before hind margin. Rostrum reaching. sixth visible abdominal segment in the male, shorter in the female but extending well beyond apices of hind trochanters. Antennae less than twice as long as width of pronotum, 51: 27; second segment slightly shorter than width of head, 21: 22; proportion of segments 6: 21: 13: 11.

Pronotum shorter than head, 11: 15; over twice as broad as long, 27: 11, the disk relatively smooth with callosities scarcely elevated. Pubescence of pronotum, scutellum, clavus, cerium, and cuneus consisting of fine subappressed hairs with a few short, appressed golden hairs intermixed.

Color light brown, the head fulvous, the eyes reddish, the callosities of pronotum fulvous, the rest of upper surface paler fulvous to ochraceous, the humeri still paler. Membrane faintly clouded. First antenna! segment brown, the remaining segments ochraceous. Rostrum pale with black apex. Legs pale with middle and hind femora reddish brown apically and with tarsi infuscated apically. Under surface pale with a broad longitudinal rufescent stripe on either side sublaterally.

Size: male, length 1.75 mm., width (hemelytra) 0.8 mm.; female, length 2 mm., width (hemelytra) 0.8 mm.

Holotype male, allotype female, and six paratypes, Inarajan , June 8, on a sedge, Rhynchospora corymbosa, Usinger ; one paratype, Inarajan , May 7, on rice, Usinger ; six paratypes, 5 miles south of Piti , June 23, on sedge in mangrove swamp, Usinger ; seven paratypes, Agana Spring, May 15, on Rhynchospora corymbosa, Usinger.

Closely allied to rufescens but with much shorter antennae and paler coloration.