No. 2323. LARVAE OF THE CLEBIDAE—BO VINO AND CHAMPLAIN. 635 



of 7,500 feet; also from tanglefoot screen June 25, W. D. Edmon- 

 ston. 



Catalina Mountains, Arizona. Collected by M. Chrisman. Clerid 

 larva from yellow-pine limb. Reared at eastern station. 



ENOCLERUS CUPKESSI Van Dyke. 



Pacific Grove, California, November 14. Reared from cones of 

 Gupressus macrocarpa J. M. Miller. 



Genus TRICHODES Herbst. 



The adults of Trichodes may be found during the daytime on 

 flowers, where they feed upon the pollen. They do not seem to be 

 predaceous in the adult stage. 



The larvae of the species studied are predaceous on the larvae of 

 bees, wasps, etc., and may also feed upon the pollen or material stored 

 as food for the bee larvae. 



Trichodes larvae may be found in the cells of bees and wasps in 

 logs, stumps, and the stems of plants, or in the hives of domestic bees. 



TKICHODES ORNATUS Say. 



Is a predator in the larval stage on the larvae of bees and wasps. 



Adults. — In Colorado the adults are very common and are found 

 on flowers from June to September, and range from 6,000 to 10,000 

 feet elevation. They feed upon the pollen of flowers and are not pre- 

 daceous in the adult stage. Mating takes place at this time. 



Larvae occur in the cells and galleries of bees and wasps in dead 

 logs and stumps. They are predaceous on the larvae of bees or 

 wasps, and possibly feed upon material stored by the parent bees for 

 their young. 



Mature larvae pupate in the spring and emerge in June. Is known 

 from most of the Western States. Observations by Champlain. 



TRICHODES APIVORUS Germar. 



Adults occur on flowers, June to August. Are pollen feeders. 

 Larvae are predaceous in the nests of bees and wasps. 



Distribution, Pennsylvania, New Jersey, New Mexico, Texas, Colo- 

 rado, North Carolina. 



TRICHODES NUTTALLI Kirby. 



Adults occur on flowers, June to August. Are pollen feeders. 

 Larvae are predaceous in nests of bees and wasps. 

 Distribution, Indiana, Wisconsin, South Dakota, Pennsylvania. 



Genus HYDNOCERA Newman. 



The adults may be found flying or resting on foliage during 

 sunny days and may be collected with the sweep net on low herbage. 



