Heliothis spp.: 1 Parasitism and Parasites plus Host Plants and Parasites of the Beet Armyworm, Diamondback Moth and Two Tortricids in the Lower Rio Grande Valley of Texas 2
A 4-yr study of parasitism of Heliothis spp. [ virescens (F.) and zea (Boddie)] showed parasitism of eggs by Trichogramma was highest in August, September and October (22–46%) and larval parasitism highest in April, May and June (5–6%). Nineteen parasite species were recorded. Beet armyworms were found on 6 cultivated and 5 wild hosts. Diamondback moths were found on 5 cultivated hosts and 9 wild hosts. Two species of Tortricidae, Platynota rostrana (Wlk.) and P. flavedana Clemens, were found on cotton and 4 wild hosts. Parasites reared from beet armyworms and diamondback moths are listed.