Larva and pupa of Loncophorus pustulatus (Champion, 1903) (Curculionidae: Curculioninae: Anthonomini) are described, illustrated and compared with descriptions of immatures of two other species of Loncophorus. Weevil larvae were found inside aborted flowers on the ground under Ceiba speciosa (A. St.-Hil.) Ravenna (Malvaceae), in the city of Sgo Paulo, State of S5o Paulo, and reared to adults in...

La plaga más importante en el cultivo de chile es Anthonomus eugenii (Cano, 1894) (Coleoptera: Curculionidae). En México se ha reportado parasitismo natural diversos agentes control sobre picudo del chile. este trabajo describe por primera vez la presencia los parasitoides Jaliscoa hunteri (Crawford, 1908) (Hymenoptera: Pteromalidae) y Urosigalphus sp. Braconidae) estado Puebla, con un porcenta...

In rearing parasitoids for biological control releases and in natural populations, female parasitoids may encounter variable distributions of host quality. Here I examine how the proportion of hosts that are small versus large or old versus young affects sex ratio and offspring production of the parasitoidwasp Spalangia cameroniPerkins parasitizingMuscadomesticaL. pupae.With increasing proporti...

The functional response of Theocolax elegans (Westwood) parasitizing the lesser grain borer, Rhyzopertha dominica (F.) was examined over a range of temperatures. A type II functional response equation was fitted to each temperature regime. The parasitization rate was highest at 301C (20 hosts per day) and was lowest at 201C (2 hosts per day). Handling time was inversely proportional to temperat...

Hymenopterous parasitoids of filth flies (Diptera: Muscidae) were surveyed during 2 years on dairy farms in Ontario and Quebec near Ottawa, Ontario, using freeze-killed sentinel house fly (Musca domestica L.) pupae and naturally occurring fly pupae collected on site. Musca domestica and Stomoxys calcitrans (L.) (stable fly) represented 98.3% of the natural fly hosts from which parasitoids emerg...

A new genus of Pteromalidae Neomegadicylus gen. nov. , along with its type species gracileus sp. is described from the Republic Korea and Japan, N. klarissae Korea. This can be distinguished putatively close relative Megadicylus Girault, 1929 by following combination characters – antennal clava large micropilosity area, F1–F6 much longer than broad; clypeus smooth shiny; notauli deep incomplete...

The functional response of the parasitoid Dinarmus basalis (Rond.) (Hymenoptera: Pteromalidae) is determined to evaluate its potential as a biological control agent. Four female wasps in the presence of males parasitoids, were allowed to oviposit during their life span or hosts at different densities. The data were fit by Rogers′ (1972) parasitoid model. The rate of parasitoid search was a′= 0....

Pteromalus cerealellae (Ashmead) (Hymenoptera: Pteromalidae) is an ectoparasitoid of several insect pests of stored products. In order to provide requisite background information to support our ongoing research on its host location mechanisms, we examined the external morphology of the antennal sensilla of this parasitoid using scanning electron microscopy. Antennae of male and female P. cereal...