Species Account taken from "A Revision of the Genus Neolarra (Hymenoptera: Nomadidae)
Author(s): Charles D. Michener Source: Transactions of the American Entomological Society (1890-), Vol. 65, No. 4 (Dec., 1939),pp. 347-362"
Phileremulus vigilans Cockerell, Psyche, (suppl.), vu, p. 9, 1895,
Baker, Proc. Ent. Soc. Wash., iv, p. 22, 1896. Cockerell, Bull. Sei. Lab. Denison Univ., xi, p. 60, 1898, [key]. Cockerell, Bull. Univ. New Mex., i,p. 60, 1898, [key].
Phileremulus nanus Cockerell, Psyche, (suppl), vu, p. 9, 1895,
Cockerell, Bull. Sei. Lab. Denison Univ., xi, p. 60, 1898, [key]. Cockerell, Bull. Univ. New Mex., i, p. 60, 1898, [key]. Cockerell, Ann. Mag. Nat. Hist., (7), v, p. 416, 1900, [record]. Cockerell and Atkins, Ann. Mag. Nat.Hist., (7), ix, p. 232, 1902.
This is a small species, with the abdomen of the female largely
reddish, that of the male black. The pubescence is white.
Male. Head: Eyes where closest together separated by fully the length of one of them; distance from median ocellus to posterior edge of vertex less than half distance from median ocellus to antennae; first flagellar segment broader than long and shorter than pedicel; apical margin of clypeus testaceous; labrum testaceous; mandibles testaceous except for ferruginous apices. Thorax: Width across pronotal tubercles less than width across mesepisterna; tegulae testaceous; recurrent vein joining sub
marginal cell about two-thirds of distance from base to apex of cell; tibiae, tarsi, and apices of femora testaceous; process of metanotum small. Abdomen: Black, posterior margins of tergites testaceous; abdomen with white pubescence which is denser on posterior margins of tergites than elsewhere; process of seventh tergite slender (similar to figure 8), rufous. Length, 3.5 mm.
Female. Abdomen rufous, segments five and six blackish. Length, 3 to 3.5 mm.
Type.Male; Las Cruces; New Mexico.
Range.Deserts of New Mexico and southern California.
New Mexico: Santa Fe and Las Vegas.
California: Hodge, San Bernardino County, (Mojave Desert), September 14, 1935, (C. D. Michener; on Cleomella obtusifolia and sand beside it).
Neolarra nanus seems to be the same as vigilans, the apparent
differences resulting from the wear of pubescence on the face and
from the collapse of the apical segments of the antennae in nanus.
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