Mosquitoes captured in a horse-baited stable trap in southeast Louisiana.

A mosquito study based on collections from horse-baited stable traps was conducted in 1993 and 1994 at 3 sites in geographically and ecologically distinct areas of St. Tammany Parish (southeastern Louisiana) to determine the major horse-feeding mosquito species that could be possible bridging and epidemic vectors of eastern equine encephalomyelitis virus. A total of 4,535 mosquitoes in 1993 and 23,906 in 1994 involving 26 species were collected, of which, depending on the site, Culex salinarius, Cx. (Melanoconion) spp., Aedes vexans, Psophora ferox, Coquillettidia perturbans, Anopheles quadrimaculatus, An. crucians, Ps. columbiae. Ae. albopictus, and Ochlerotatus atlanticus were captured in relatively high numbers with high engorgement rates and were therefore considered important horse-feeding species in the parish.