A New Strumigenys From Illinois (Hymenoptera: Formicidæ)

Neal A. Weber
1934 Psyche: A Journal of Entomology  
The ant here described was obtained through Dr. M. R. Smith from the Illinois Natural History Survey. It proves to be the sixteenth Nearctic species of a small and inconspongiform processes on the pedicel and, in many forms, by development in the tropics. The members of this genus are found chiefly in rotted wood on the ground or in damp soil under stones and are comparatively rare and littleknown. They are noteworthy in the possession of sixjointed antennm, peculiar and diverse pilosity,
more » ... rse pilosity, strange spongiform processes on the pedicel and, in many forms, by a great development of the mandibles. Strumigenys (Cephaloxys) talpa n. sp. (Fig. 1 ) WORKER: Length 1.8 mm. Head 0.56 mm. long, cordate, shallowly excised at the posterior margin, occipital margins rounded, sides anterior to the antennal insertions converging gently to the mandibles; clypeus with evenly rounded anterior margin and posterior angle obtuse; exposed part of mandibles less than V. the length o the remainder of the head, outer margins convex, inner margins armed at the apical 2//t with about 6 acute teeth and at the apex with several smaller acute teeth, armed at the base with a single large acute tooth; antennal scapes extending posteriorly to the maximum breadth of the head, evenly bent inwards at the base; 1st joint of the uniculus distinctly longer than the 2nd and 3rd together and about equal in length to the 4th alone, terminal joint distinctly longer than the preceding joints of the funiculus together. Thorax, in profile, evenly convex, mesopinoral suture iaintly indicated; epinotal spines acute, low, directed backwards and slightly upwards; infraspinal lam-
doi:10.1155/1934/52764 fatcat:ipzxettqindsnonemcfouixoii