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1 October 2012 Life Stages of the Anthophilous Thrips Leptothrips fasciculatus (Crawford) (Thysanoptera: Phlaeothripidae)
William D. Wiesenborn
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Abstract

Leptothrips fasciculatus (Crawford) is a tubuliferan thrips that has primarily been collected as adults from Eriogonum fasciculatum Bentham, a shrub that produces compound inflorescences with flowers in clusters. I observed, collected, and photographed adults and immature stages of the thrips on inflorescences of Eriogonum fasciculatum polifolium (Bentham) Torrey & A. Gray in the Mojave Desert during spring 2011 and 2012. Adults moved intermittently around the outside of inflorescences. Eggs were located, and first- and second-instar larvae were abundant, inside flowers and within the involucres that surround flower clusters. Mature second-instars and non-feeding fourth- and fifth-instars inhabited leaf litter and soil beneath plants. Eggs were subcylindical, translucent, without reticulation, and knobbed on one end by an aeropyle. Second-instar larvae were red with a median, yellow band. Adults and larvae were observed feeding on pollen and other flower parts but not prey. Leptothrips fasciculatus's anthophilous behavior contradicts the predation generalized for the genus.

Kansas Entomological Society
William D. Wiesenborn "Life Stages of the Anthophilous Thrips Leptothrips fasciculatus (Crawford) (Thysanoptera: Phlaeothripidae)," Journal of the Kansas Entomological Society 85(4), 332-339, (1 October 2012). https://doi.org/10.2317/0022-8567-85.4.332
Accepted: 3 November 2012; Published: 1 October 2012
JOURNAL ARTICLE
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KEYWORDS
Eriogonum fasciculatum
flowers
Insecta
Mojave Desert
Polygonaceae
Tubulifera
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