Notes on Coenosia tigrina (F.) (Diptera: Anthomyiidae), Mainly on Habits and Rearing

Abstract

Coenosia tigrina (F.) was first observed in Canada in 1943 at Ottawa by Mr. A. R. Brooks of the Entomology Division (Mr. G. E. Shewell, Entomology Division, Ottawa, personal communication). By 1917 the insect had been collected as far west as Guelph, Ontario. It was first recorded from the province of Quebec in 1951 by Perron and Lafrance (1952), who observed it preying on adults of Hylemya antiqua (Mg.) in rearing cages at St. Jean. Later observations and surveys by these workers indicated the predator to be very abundant in southwestern Quebec. More recently Mr. F. M. Cannon (personal communication), Field Crop Insect Section, Science Service Laboratory, Charlottetown, Prince Edward Island, and Mr. L. A. Miller (personal communication), Entomology Laboratory, Chatham, Ont., reported C. tigrina to be present as far east as Charlottetown and as far west as Chatham.

Descriptions of Immature Stages of Coenosia tigrina (F.) (Diptera: Anthomyiidae), with Notes on Hibernation of Larvae and Predation by Adults

“…It appears that the compost soil, rich in larval and pupal fauna of a number of arthropod and annelid species, provided a ready source of food for developing C. tigrina larvae. The carnivorous habit of C. tigrinn larvae was observed by Perron et al (1956), who successfully reared them on live H. antiqua pupae in the laboratory. Keilin (1917) also observed that larvae of a related anthomyiid, Melanochelia riparia (Fall.…”

“…tigrina was determined by rearing individually in the laboratory from emergence t o maturity, after the method of Perron et al (1956), 100 larvae and checking each daily for exuviae. tigrina was determined by rearing individually in the laboratory from emergence t o maturity, after the method of Perron et al (1956), 100 larvae and checking each daily for exuviae.…”

“…T h e number of post-embryonic larval instars for C . tigrina was determined by rearing individually in the laboratory from emergence t o maturity, after the method of Perron et al (1956), 100 larvae and checking each daily for exuviae. Four 25-egg samples, each taken at different stages of egg development, from the freshly laid state to eclosion, were also examined by internal dissection for suppressed larval instars (Tripp, 1954).…”

BIOLOGY OF THE PREDATORY FLY COENOSIA TIGRINA (FAB.)(DIPTERA: ANTHOMYIIDAE): REPRODUCTION, DEVELOPMENT, AND LARVAL FEEDING ON EARTHWORMS IN THE LABORATORY

“…matures vivants; elle a atteint 90% lorsque les larves Ctaient nourries avec des E. foetida Introduction The adults of Coenosia tigrina (Fab.) (Diptera: Anthomyiidae) are predators of other insects, mostly adult Diptera of similar or smaller size (Hobby 1931;Perron et al 1956). Its soil-dwelling larvae have been observed feeding externally on the lumbricid Eisenia rosea (Sav.)…”

“…Although C . tigrina adults are polyphagous, in agricultural areas they tend to overlap spatially and temporally with the onion maggot fly, which is a principal prey (LeRoux and Perron 1960;Perron et al 1956). Only recently, however, has C .…”