Leptothrips fasciculatus (Crawford DL)

Phyllothrips fasciculata Crawford DL, 1909: 105.

Phyllothrips fasciculata var. stenoceps Crawford DL, 1909: 108. Anthothrips nigricornis Jones, 1912: 17 .

Haplothrips jonesi Karny, 1912: 344 . Replacement name for nigricornis Jones, a homonym of nigricornis Bagnall, 1910 . Leptothrips russelli Morgan, 1913: 39 .

Described from both sexes on Eriogonum fasciculatum [ Polygonaceae] at Claremont, California, this species is known to breed in the flowers of this plant with no evidence that it is predatory (Wiesenborn 2012). Specimens have also been studied from Nevada and Arizona. Despite sharing with purpuratus the presence of a fore tarsal tooth and the absence of duplicated wing cilia, the pronotum of fasciculatus has no prominent sculpture lines but has well-developed mid-lateral setae (Fig. 22). Moreover, the sculpture lines on the mesonotum are not closely spaced, but form an almost reticulate pattern (Fig. 28). The fore tarsal tooth of males is considerably larger than that of females.