Monthly Parasitism Rate by Tachinid Flies and Egg Allocation on the Body of Dichelops furcatus

Monthly parasitism rates and oviposition behavior of tachinid flies parasitizing Dichelops furcatus (F.) (Hemiptera: Pentatomidae) adults were determined. Weekly surveys, with duration of 2 hr each, were performed during 1 yr at the National Wheat Research Center in Passo Fundo, Rio Grande do Sul, B...

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Bibliographic Details
Published in:The Florida entomologist 2018-03, Vol.101 (1), p.91-96
Main Authors: Agostinetto, Alice, Panizzi, Antônio R, Lucini, Tiago
Format: Article
Language:English
Subjects:
Abdomen
Adults
biocontrol
Biological insect control
Control
controle biológico
Crop residues
Cylindromyia
Dichelops furcatus
Diptera
Ectophasiopsis gradata
egg incidence
Eggs
Entomology
Flies
Foodborne illnesses
Gymnoclytia
Hemiptera
incidência de ovos
Insect eggs
Laboratories
Methods
Observations
Oviposition
oviposição
Parasitism
Parasitoids
Pentatomidae
Research facilities
RESEARCH PAPERS
Soybeans
Stink bugs
Tachinidae
Taxa
Wheat
Wings
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Summary:Monthly parasitism rates and oviposition behavior of tachinid flies parasitizing Dichelops furcatus (F.) (Hemiptera: Pentatomidae) adults were determined. Weekly surveys, with duration of 2 hr each, were performed during 1 yr at the National Wheat Research Center in Passo Fundo, Rio Grande do Sul, Brazil. Stink bugs were collected from different plants and from crop residues, and taken to the laboratory to examine whether or not they were parasitized (presence of fly eggs). Number and egg allocation (dorsal and ventral surfaces) on stink bug bodies were determined. Stink bugs were kept inside plastic boxes to collect the parasitoid pupae and to identify the flies after emergence. Four tachinid (Diptera: Tachinidae) species were obtained as follows: Ectophasiopsis gradata (Wiedemann), Cylindromyia sp., and Gymnoclytia sp. 1 and sp. 2. The parasitism rate ranged from 2.5 to 7.0% (during Apr–Aug), and from 12 to 59% (Sep–Mar). Eggs were laid preferably on the dorsal surface (82%), and the majority of them (42%) under the wings. The number of fly eggs per parasitized stink bug ranged from 1.0 to 2.0.
ISSN:0015-4040
1938-5102
DOI:10.1653/024.101.0116