Astylus atromaculatus (Blanchard, 1843), the most widely distributed taxon of the genus, is redescribed. The original description is based mainly on the coloration patterns of the elytra. The study of the external morphological characters and genitalia of the type material and from specimens of collections allows the establishment of a new synonymy between A. atromaculatus and A. atromaculatus var. duodecimmaculatus. Geographic distribution data is provided for the taxon are provided.
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http://dx.doi.org/10.11646/zootaxa.5447.3.5 | DOI Listing |
Zootaxa
May 2024
Instituto de Entomología; Universidad Metropolitana de Ciencias de la Educación; José Pedro Alessandri 774; Ñuñoa; CP 7760197; Santiago; Chile.
Astylus atromaculatus (Blanchard, 1843), the most widely distributed taxon of the genus, is redescribed. The original description is based mainly on the coloration patterns of the elytra. The study of the external morphological characters and genitalia of the type material and from specimens of collections allows the establishment of a new synonymy between A.
View Article and Find Full Text PDFJ Vet Diagn Invest
July 2024
California Animal Health and Food Safety Laboratory, San Bernardino Branch, School of Veterinary Medicine, University of California-Davis, CA, USA.
Blanchard is a native beetle of South America that feeds on pollen. During the summer of 2022-2023 in Argentina and Uruguay, an explosive infestation of these insects occurred in pastures in which ruminants were grazing. This was believed to be associated with a severe drought, which had significantly reduced the flowering of crops.
View Article and Find Full Text PDFVet Pathol
July 2024
Instituto Nacional de Investigación Agropecuaria, Estación Experimental La Estanzuela, Uruguay.
In the summer of 2023, ingestion of (pollen beetle) was linked to spontaneous fatal disease in grazing cattle and sheep in Argentina and Uruguay. While the disease was experimentally reproduced in sheep and guinea pigs in the 1970's, no experimental reproductions have been attempted in cattle, and controversy exists as to whether this insect is indeed noxious to cattle and at which dose. Here, we demonstrate that causes acute fatal disease in Hereford calves at single oral dosages of 2.
View Article and Find Full Text PDFJ Vet Diagn Invest
January 2024
California Animal Health and Food Safety Laboratory, San Bernardino branches, School of Veterinary Medicine, University of California-Davis, CA, USA.
is a pollen beetle native to South America, commonly found in crop flowers. Experimental intoxication of sheep and guinea pigs by this beetle resulting in fibrinonecrotizing enteritis has been reported. We describe here 6 natural outbreaks of intoxication in cattle associated with consumption of alfalfa (5 of 6) and mixed native (1 of 6) pastures heavily contaminated with .
View Article and Find Full Text PDFEnviron Entomol
October 2010
INRA,UMR1099 Biologie des Organismes et des Populations Appliquée à la Protection des Plantes, F-35650 Le Rheu, France.
In South Africa, modified Bt (Cry1 Ac) cotton cultivars and organic ones coexist. This raises the question of the risk of dissemination of genetically modified (GM) pollen to non-GM crops by visiting insects. We inventoried the flower-visiting insects in Bt and non-Bt cotton fields of the South African Highveld region and investigated their role in pollen dispersal.
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