Anais da Sociedade Entomológica do Brasil (1998) 27, 495-498

Beatriz S. Correa-Ferreira, M.C. Nunes and L.D. Uguccioni (1998)
Ocorrência do Parasitóide Hexacladia smithii Ashmead em Adultos de Euschistus heros (E) no Brasil
[Occurrence of Hexacladia smithii Ashmead parasitoid of Euschistus heros (F.) adults in Brazil]
Anais da Sociedade Entomológica do Brasil 27 (3), 495-498
Abstract: Parasitism of Euschistus heros (F) adults was studied in Londrina, PR. Twenty males and 20 females were collected each week from November 1996 to December 1997. In the laboratory, adults were sexed and maintained in plastic box (12 x 12 cm) with humidity and soybean pods as food, and observed daily during 30 days. The encyrtid Hexacladia smithii Ash. was observed attacking the bugs, being the first record of parasitism by Hexacladia in this host. The natural incidence of parasitism varied from 0.6% to 39.5%. Higher abundance of the parasitoid occurred during December and January and it was drastically reduced (<1%) from May to September. Males and females were equally attacked by the parasitoid (14.7% and 11.9%, respectively). H. smithii is a gregarious endoparasitoid that completed its development inside the host body. Adults emerged through a hole in the ventral or dorsal surface of the abdomen. From 2 up to 39 parasitoids were observed to emerge from a single adult E. heros.
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(original language: Portuguese)
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Database assignments for author(s): Beatriz S. Correa-Ferreira

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
surveys/distribution/isolation

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Euschistus heros	Soybean (Glycine max)	Brazil (south)
Hexacladia smithii (parasitoid)	Euschistus heros	Soybean (Glycine max)	Brazil (south)