A revision of the genus Malacosoma Hübner in North America (Lepidoptera: Lasiocampidae): systematics, biology, immatures, and parasites
The genus Malacosoma Hubner, the tent caterpillars, is a group of lasiocampid moths restricted to the temperate regions of the Northern Hemisphere. The adults are often ignored, possibly because they are quite abundant (collectors tend to save rare or unusal specimens), are moderate in size, comparatively drab in color, and have a lifespan of only a few days at most. The larvae, however, are well known for the conspicuous tents which some species construct in early spring soon after the first leaves appear.
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Economic importance of genus Malacosoma
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addorsal Addorsal area Alberta Amelanchier americanum Ariz Arizona aspen aztecum blue brown Calif California Coll californicum ambisimile californicum californicum californicum fragile californicum lutescens californicum pluviale Canyon Ceanothus Cercocarpus Clisiocampa cocoons collected color pattern conspicuous constrictum constrictum Creek dark darker defoliation differences egg masses eighth sternite epiphysis females figure genital plate genitalia hatching Henry Edwards host incurvum incurvum discoloratum incurvum incurvum instar June Lake larvae last instar lateral setae Lectotype Lines on forewings Malacosoma californicum Malacosoma disstria median area Mexico middorsal Morongo Valley Mountains Neumoegen and Dyar neustrium occur orange ornicum ovipositor Park pluviale Populus tremuloides Prunus fasciculata Prunus virginiana Purshia tridentata Quercus agrifolia reared Ribes Ribes sp Rosa sp Salix sp secondary setae segment setae setal group similar Sonoma specimens specks spumaline sternite stripe subdorsal area subspecies supraspiracular tent caterpillar terminalia Tetrastichus tigris twigs usually Utah variable ventral vertical black bar wings yellowish