. Annual report. Entomological Society of Ontario; Insect pests; Insects -- Ontario Periodicals. Fig. 20.—Imported Red Spider. (Tetranychus pilosus.) Fig. 21.—Common Red Spider. (Tetranychus himaculatus.) plum is the European Tetranyclms pilosus, which occurs there on pears and other fruit. Its relation to T. mytilaspidis is very close and perhaps identical, but the latter species has been only known to us from the south and mostly on ; He stated further that this was the first record of T. pilosus in America and asked for more material and data, which were at once forwarded. Desc
. Annual report. Entomological Society of Ontario; Insect pests; Insects -- Ontario Periodicals. Fig. 20.—Imported Red Spider. (Tetranychus pilosus.) Fig. 21.—Common Red Spider. (Tetranychus himaculatus.) plum is the European Tetranyclms pilosus, which occurs there on pears and other fruit. Its relation to T. mytilaspidis is very close and perhaps identical, but the latter species has been only known to us from the south and mostly on ; He stated further that this was the first record of T. pilosus in America and asked for more material and data, which were at once forwarded. Description of Appearance of Tetranychus Pilosus as Seen Under a Hand Lens. The mites are about the same size as T. himaculatus, but are stouter and more nearly circular in outline of (body. Unlike T. himaculatus, the females are apparent- ly always, even in the immature stages, red in colour. The mature females are dark red, some being decidedly blackish, but the mouth parts and often a median dorsal longitudinal area, especially on the posterior half of the body, are paler red. The ventral surface is paler than tlie dorsal. The legs are whitish, tinged with red. On the dorsal surface are a few small, whitish tubercles arranged in parallel rows. Four longitudinal rows with three tubercles in each can easily be seen. There are, how- ever, more tubercles but not easily made out with a hand lens. From each tubercle. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Entomological Society of Ontario; Ontario. Dept. of Agriculture. Toronto, The Society
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectinsectp, bookyear1872
