1979] 
Petralia & Vinson — Anatomy of Ant Larvae 
377 
Trachymyrmex septentrionalis McCook. Collected from College 
Station (Brazos Co.), TX (May 12, 1964), by P. Adkisson. 
Identified by M. R. Smith. Two specimens examined with SEM. 
Atta texana (Buckley). Reared from 1 year old colony collected 
from Ratides Parish, LA (1975 queen), and identified by J. 
Moser. Five specimens examined with SEM. 
Dolichoderinae 
Iridomyrmex pruinosum Roger. Reared from Colony collected 
from College Station (Brazos Co.), TX (April 25, 1979) by R. 
Petralia. Identifed by J. Mirenda and R. Petralia. Three 
specimens examined with SEM. 
Formicinae 
Colobopsis pylartes Wheeler. Collected from Davy Crockett 
National Forest, TX (July 19, 1973), and identified by A. C. F. 
Hung. Three specimens examined with SEM. 
Camponotus rasilis Wheeler. Reared from colony collected from 
College Station (Brazos Co.), TX (early spring, 1976), by M. R. 
Barlin. Identified by J. Mirenda and R. Petralia. Four specimens 
examined with SEM. 
All species were identified from adults. Collected material from 
which specimens were obtained is available in the insect collection of 
the Department of Entomology, Texas A&M University, College 
Station, Texas, 77843. Both adults and larvae and/or prepupae are 
available for all species except P. barbatus and C. laeviuscula (adults 
only). 
P. barbatus, C. laeviuscula, M. pharaonis, S. molesta, and /. 
pruinosum were collected and reared according to the techniques 
described for Solenopsis invicta Buren (Petralia and Vinson 1978). C. 
rasilis was reared in a large bucket, brood being maintained in Wilson 
cells and petri dishes covered with a red plastic film. Atta texana was 
reared by Dr. John Moser (USDA Forest Service, Southern Forest 
Expt. Station, 2500 Shreveport Hwy., Pineville, Louisiana 71360). 
Larvae of N. nigrescens were fixed in 70% ethanol for 2 years. The 
remaining species were obtained from the insect collection of the 
Department of Entomology, Texas A&M University, and had been 
fixed in 80% ethanol for up to 6 years. 
Specimens from the insect collection and N. nigrescens were subse¬ 
quently refixed in 3% glutaraldehyde-3% formalin for 3 days or more, 
post-fixed in osmium tetroxide, dehydrated, critical point dried, 
