Hilgardia
Hilgardia
Hilgardia
University of California
Hilgardia

Dynamics of hippelates eye gnat breeding in the southwest non-cultivation and cover

Authors

E. F. Legner
E. C. Bay

Authors Affiliations

E. F. Legner is Associate Entomologist, Division of Biological Control, Dept. of Entomology, U.C., Riverside; E. C. Ray is Associate Professor, Division of Biological Control, Dept. of Entomology, U.C., Riverside.

Publication Information

Hilgardia 24(5):4-6. DOI:10.3733/ca.v024n05p4. May 1970.

PDF of full article, Cite this article

Abstract

THERE ARE PRESENTLY SEVEN SPECIES OF Hippelates eye gnats which are adapted to varying climatic situations in California and southwestern United States. One species, Hippelates collusor (Townsend), is of wide-spread concern because it has become well adapted to year-around breeding in the hot interior agricultural areas of the Southwest, where field cultivation is practiced. Hippelates pusio Loew, also an agricultural breeder, is more restricted to the cooler climatic conditions on the coast. Two species, Hippelates robertsoni Sabrosky, and a recent invader from Mexico, H. impressus Becker, inhabit the mountains or lowlands in the spring. They cannot tolerate the extreme heat of summer in the lowlands of this region. Species that are of little annoyance or whose density is extremely low are H. microcentrus Coquillett, H. dorsalis Loew and H. hermsi Sabrosky.

Legner E, Bay E. 1970. Dynamics of hippelates eye gnat breeding in the southwest non-cultivation and cover. Hilgardia 24(5):4-6. DOI:10.3733/ca.v024n05p4
Webmaster Email: wsuckow@ucanr.edu