n367859SE Academic Article uri icon

abstract

  • 1986 Entomological Society of America. Field mortality of Leptoglossus phyllopus (L.) eggs was examined in Texas and Louisiana by placing egg masses on various oviposition substrates. Naturally occurring egg masses were collected to supplement data obtained from experiments. In Austin, Tex., overall mortality of experimentally placed eggs was 98.7%; parasitism and predation accounted for 70.4 and 28.0%, respectively. Gryon largi (Ashmead), G. pennsylvanicum (Ashmead), Anastatus semiflavidus (Gahan), and A. undescribed sp. nr. reduvii (Howard) were reared from field-collected eggs. All except G. largi were also obtained from experimental egg masses. Parasitism by Anastatus spp. was substantially higher on the host plant Cirsium texanum Buckl. than on nonhost plants, whereas G. pennsylvanicum parasitized eggs efficiently on all substrates tested. In Baton Rouge, La., overall egg mortality was 35% in March and 47% in April. G. pennsylvanicum was the only parasitoid reared from experimental egg masses. Predation accounted for 10% of the observed mortality in March, but nearly 100% in April.

published proceedings

  • Annals of the Entomological Society of America

author list (cited authors)

  • Mitchell, P. L., & Mitchell, F. L.

publication date

  • January 1, 1986 11:11 AM