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As differences in sex pheromones usually act as a barrier against interspecific mating, the fact that the closely related moths Xylena fumosa (Butler) and X. formosa (Butler) (Lepidoptera: Noctuidae: Xyleninae) are commonly attracted to the sex pheromone lure for Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae: Heliothinae) seems unlikely, suggesting that some mechanisms exist between them to...
Seasonal fluctuations in body sizes of mother spiders, spiderlings, and clutch size in the wolf spider, Pardosa astrigera (L. Koch) (Araneae: Lycosidae), were investigated. Cephalothorax and abdomen widths were measured in females with egg sacs collected in Tsu, Mie Prefecture, from May 2009 to October 2013. Spiderlings that emerged from the egg sacs were counted and those widths measured. In addition,...
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