Emesopsis pilosus Usinger 1946, new species
Creators: name: Usinger, Robert L.
Publisher: name: Bernice P. Bishop Museum, Bulletin 189
Year: 1946
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Reduviidae
Emesopsis
Emesopsis pilosus

description: 36. Emesopsis pilosus, new species (fig. 7).
Entire body and appendages clothed with long, fine, erect hairs with bent tips. Body relatively short and broad, pronotum strongly constricted, unarmed. Mesonotum unarmed, metanotum with a distinct spine and first abdominal tergite tuberculate.
Head longer than broad, 22: 17; densely clothed with an appressed pubescence interrfipted on front lobe between eyes by two longitudinal, anteriorly divergent, glabrous lines. Hind lobe rounded behind, strongly convex, and almost imperceptibly longitudinally impressed along middle. Entire head beset with long, erect, apically curved hairs in addition to the short appressed pubescence. Antennae a little shorter than length of body from tip of tylus to apex of abdomen, 149: 155; proportion of segments one to four as 63: 38: 34: 14; the segments not noticeably enlarged apically; first segment with moderately long, apically shorter, apically directed, straight hairs, third and fourth segments with extremely fine, inconspicuous appressed hairs. Rostrum stout, curved, proportion of segments 12: 6: 8, the first segment distinctly pubescent, second segment swollen and glabrous, third slender.
Pronotum a little longer than head, 25:22; strongly constricted, the front lobe two thirds as long as hind lobe, the hind lobe as broad across humeri as entire length of pronotum. Disk convex, without lateral carinae, the hind lobe roundly elevated to hind margin, this last roundly concave in front of scutellum. Disk irregularly clothed with short, appressed pubescence interrupted by three glabrous fasciae on either side of front lobe, and beset with many long, erect, apically curved hairs. Mesonotum about as long as wide, strongly convex but unarmed. Metanotum with a well developed spine, first abdominal tergite with an erect, blunt, spine-like tubercle.
.
Abdomen almost three times as wide just beyond middle as subbasally, the hind margin of first visible ventrite shallowly, roundly emarginate. Ventral surface beset with scattered, long, slender hairs.
Hemelytral venation as in Emesopsis gaius McAtee and Malloch (Philippine Jour. Sci. 30: pl. 1, fig. 3, 1926), the apical vein with a faint suggestion of a vein stump beyond apex of discal cell. Hemelytral margins with rows of fine, erect, apically curved hairs.
Legs relatively short, the hind femora reaching about to apices of hemelytra. Front tarsi two-segmented. Front femora with one or two inconspicuous spines among the dense hairs at base. Front coxae and femora with relatively long, erect hairs. Middle and hind femora with exceedingly long, erect, apically curved hairs except at bases, the hairs about 4 or 6 times as long as diameter of femur. Tibiae with equally long hairs on basal half but diminishing apically.
Color rather uniformly light brownish to fulvous, the eyes dark brown, the legs very pale brown with the following slightly darker annulations faintly visible: apical half of front coxae and middle, subapices and apices of femora. Hemelytra with membranous areas subhyaline without fuscous markings.
Size: length 4.4 mm.
Holotype female, Machanao, June 30, Usinger.
This species occupies an anomalous position, not fitting precisely into any of the subgenera of McAtee and Malloch. It shquld perhaps be the type of a new subgenus but I do not wish to take such a step with only a single female specimen. It fits typical Emesopsis most closely but differs in having one or two spines at bases of front femora, distinct, trifasciate glabrous areas on either side of front lobe of pronotum and an obscure stump of a vein ori apical vein just beyond discal cell. It differs specifically from the Oriental species of Emesopsis in its small size and immaculate hemelytra. From the Antillean genotype, nubilus Uhler, it differs in possessing the spines at base of front femora and in the relatively shorter third antenna! segment.
description: Published as part of Usinger, Robert L., 1946, Hemiptera Heteroptera of Guam, pp. 11-103 in Insects of Guam II, Honolulu, Hawaii :Bernice P. Bishop Museum, Bulletin 189 on pages 42-43, DOI: 10.5281/zenodo.5173934