Taxonomy and bioecology of eriophyids (Acari: Eriophyoidea) associated with Canada thistle, Cirsium arvense (L.) Scop.Petanovic R., Boczek J. and Stojnic B.
1997 - Volume: 38 Issue: 2 pages: 181-191
Date published: 1997-05-31
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Keywords: taxonomy, bioecology, synonymyzation, Eriophyoidea, Cirsium
Comparison of eriophyid mites occurring on Cirsium arvense (L.) over two growing seasons showed two forms of females which were previously called separate species Aceria? anthocoptes (Nalepa, 1892) and Aceria leonthodontis (Lindroth, 1904). According to our data, two forms of females belong to one species Aceria anthocoptes (Nal.). Males studied during the whole growing season had the characteristics similar to protogynes. Damages caused by both forms were the same. In the middle of the season transitional forms between protogynes and deutogynes were often found.
Varroa destructor (Varroidae) on a honey bee. Low temperature -Scanning electron microscopy photograph.
Material collected and fixed for LT-SEM: J. Pettis, USDA-ARS-Bee Lab. and R. Ochoa, USDA-ARS-SEL;
LT-SEM photo: E. Erbe and C. Pooley, USDA-ARS-CEMU © USDA;
Petrobia harti (Tetranychidae) © INRA - Alain Migeon;
Dermanyssus gallinae (Dermanysssidae) © Ecole Nationale Vétérinaire de Lyon – Lise Roy;
Adult Ixodes sp. (Ixodidae) engorging on an Atlantic puffin Fratercula arctica © Andy Darrington;
Panonychus ulmi (Tetranychidae): hatching of a winter egg © Université de Lausanne – Centre de microscopie électronique – Cazelles
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