Oncylocotis swezeyi Usinger 1946, new species

34. Oncylocotis swezeyi, new species.

Small, parallel-sided, hemelytra short, color uniformly dark brown above, densely clothed with an erect pubescence, the individual hairs bent at the tips.

Head about one third longer than pronotum on median line, the front lobe two thirds longer than hind lobe, eyes relatively small, one fourth as wide as interocular space. Hind lobe as wide as front lobe across eyes, three fourths as long as broad, evenly, transversely oval, the ocelli inconspicuous, scarcely projecting. Antennae as long as distance from head to middle of pronotum, the first segment exceeding apex of head, third and fourth segments relatively stout but fusiform; proportion of segments one to four as 7: 20: 15: 18.

Pronotum broader than long, 40: 36, the transverse impressions very distinct; proportional length of lobes from anterior to posterior on median line, 10: 17: 10; proportional widths of same, 18: 34: 40. Middle lobe with a distinct, inverted Y-shaped impression at middle and a distinct, glabrous, tripartite impression on either side. Front margin nearly straight, hind margin slightly concave.

Hemelytra short, not quite reaching tip of abdomen, the veins each with two rows of erect, long hairs bent at their tips. Venation as in basalis (Westwood) and all other members of this genus.

Legs stout, the front femora three times as long as greatest thickness. Tibiae four fifths as long as femora, a little more than one third as wide at apex as long, with several stout spines at inner apex. Hind femora but little longer than front femora and just as wide though subflattened and hence not so stout.

Color uniformly brown above except for fulvous antenniferous tubercles and juga, and slightly paler extreme bases of coria. Antennae ochraceous, the second segment more Brownish. Rostrum fulvous. Legs brown with ochraceous knees and tarsi.

Size: length 4.5 mm.

Holotype female, Agana Spring, May 4, in rotten Pandanus log, Swezey.

Vei;y close to bakeri (Bergroth) from Laguna, Los Banos, and Mount Maquiling on Luzon. Topotypic specimens of both sexes of bakeri were collected by me on Mt. Maquiling. The females of bakeriarelonger(5mm.) and relatively more slender than in swezeyi, the hind lobe of the head is less strongly transverse and the color, as described by Bergroth, is quitedistinctive. The hemelytra are dark brown with pale across their entire bases including clavus and corium and the hind lobe of the head is quite pale. Four female specimens from Manila, collected by C. S. Banks and loaned to me from the Museum of Comparative Zoology, are apparently identical with swezeyi, though I have not labeled them as paratypes because of the possibility of differentiation under insular isolation.

Other Oceanian species of this group are before me from Fiji (fungicola Kirkaldy), New Hebrides, the Solomon Islands and New Guinea. I am in'... debted to 0. Lundblad of the Naturhistoriska Riksmuseum in Stockholm for the loan of one of Sta.l's cotypes of nasuta, thegenotypeof OncylocotisStal. It now becomes clear that all of the robust, densely pubescent species allied to basalis Westwood and formerly included in thegenusEnicocephalusWestwood actually belong in Sta.l's genus.

I take pleasure in dedicating this first Micronesian species of Enicocephalidae to 0. H. Swezey, my companion during the field work on Guam anda TODO constant source of inspiration during my stay in the Pacific.