180 
Psyche 
[Vol. 89 
Tribe Camponotini 
1. Posterior x /i of venter of All 
raised to form transverse welt, 
and, on either side ridges from 
the welt extend forward 
2. Body hairs numerous 
3. Body hairs of 5 types: ( 1) 2- to 
6-branched; branches all in 
same plane, the most numer- 
ous type; (2) simple, short, 
slightly curved; (3) few, sim- 
ple, long and whip-like; (4) 
few, denticulate (5) few, un- 
cinate 
4. Antenna small 
5. Head hairs numerous, long 
Colobopsis 
1. Praesaepium formed from 
ventral surface of Till and 
AI: anterior border of All 
forms ventral wall; no side 
walls 
2. Body hairs sparse 
3. Body hairs of 3 types; mostly 
(1) simple or (2) bifid; few (3) 
very long and whip-like; none 
uncinate. 
4. Antenna minute, peg-like 
5. Head hairs moderately numer- 
ous, short 
Colobopsis pylartes W. M. Wheeler 
Petralia and Vinson 1979. Venter — description and SEM. 
Genus POLYRACHIS F. Smith 
Hinton 1951 : 169. The larvae of Wurthia aurivillii Kemner and W. 
myrmecophila Roepke (Pyralididae) feed on the brood of ants in 
this genus. 
Polyrhachis dives F. Smith 
Hinton 1951: 167. The larvae of Batrachedra myrmecophila Snell. 
(Cosmopterygidae) feed on the brood of this ant. 
Literature Cited 
Akre, R. D., and W. B. Hill. 1973. Behavior of Adranes tavlori, a myrmecophilous 
beetle associated with Lasius sitkaensis in the Pacific Northwest. J. Kansas 
Entomol. Soc. 46:526-536. 
Alpert, G. D., and P.O. Ritcher. 1975. Notes on the life cycle and myrmecophilous 
adaptations of Cremastocheilus armatus. Psyche 83:283-291. 
