Report on the First Nearctic Record of Euxestaphaga argentinensis Gallardo (Hymenoptera: Figitidae), a Parasitoid of Corn Silk Flies (Diptera: Ulidiidae), with Notes on Diagnostics and Biology
Aug 2026· Proceedings of the Entomological Society of Washington· Vol 128, pp. 135-142· 0 citations· 12 references
TL;DR
A species of parasitoid wasp that attacks and kills Euxesta eluta Loew, a major pest of corn, is reported on, providing an updated diagnosis of external morphology as well as authoritative DNA barcode sequence.
Abstract
Cornsilk flies (Diptera: Ulidiidae) are major pests negatively impacting production of sweet corn production throughout warm temperate and tropical areas in the Americas. Here we report on a species of parasitoid wasp that attacks and kills Euxesta eluta Loew, a major pest of corn. Previous to this work, this parasitoid, Euxestaphaga argentinensis Gallardo, was only known from Argentina. While we are not sure when this species arrived in North America, it very likely represents a case of unintentional biocontrol. As this new record will likely impact biological control of E. eluta and other corn silk flies, we herein provide an updated diagnosis of external morphology as well as authoritative DNA barcode sequence.
Leucinodes orbonalis Guenée, 1854 is a major internal feeder of solanaceous crops in the Indo-Malayan region and an economically important quarantine pest. During field surveys conducted in September 2025 in Arunachal Pradesh, India, fruit-boring larvae were observed on Solanum aethiopicum Linnaeus. Infested fruits wer...
K. C. Sahoo, K. Ajaykumara, R. Hiremath· Entomological news· 0 citations
Cannibalism among Toxorhynchites larvae is frequently reported and is generally associated with resource limitation and high population density. This study aimed to describe the natural
aggregation of Toxorhynchites larvae in the absence of evidence of cannibalism. Twenty-six third-
and fourth-instar larvae (L3-L4) w...
David Campos Andrade, Rafael Oliveira-Christe, Mauro Toledo Marrelli· Revista Chilena de Entomolog...· 0 citations
Larvae of a previously undescribed species of gall midge were found preying on nymphs of a mealybug infesting flower buds of blueberry
Vaccinium corymbosum
in a production orchard in Queensland, Australia. Using ribosomal 28S gene segment sequence, the mealybug pest was identified as belonging to a species co...
P. Kolesik, A. Manners, Joy Conroy· Austral Entomology· 0 citations
Three species of Dryadaula (Lepidoptera: Dryadaulidae): D. angustivalva Lee, Hoare & Yang, 2023; D. caucasica (Zagulajev, 1970); and D. multifurcata Gaedike, 2000 are recorded from Japan for the first time. In addition, Dryadaula trapezoides (Meyrick, 1935) is redescribed in detail based on newly collected specimens fr...
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Zelus renardii, Kolenati 1857 (Hemiptera: Reduviidae) commonly known as the Leafhopper Assassin bug, is a Nearctic predatory insect, that preys on a wide range of insect species. The present work provides the first report of this species attacking the olive fruit fly Bactrocera oleae (Diptera: Tephritidae) in olive cul...
Ioannis Alamaniotis, Smaro Papadopoulou· ENTOMOLOGIA HELLENICA· 0 citations
The amaranth flea beetle,
Disonycha glabrata
(F.), is a major pest of amaranth crops (
Amaranthus
spp.) in the United States. Despite its economic impact, its natural enemy complex remains poorly documented. In this study, we report the first record of larval parasitism
in
D. glabrata
by the tachinid...
Y. Callohuari, John O. Stireman, M. Bertone et al.· Journal of applied entomolog...· 0 citations
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