Principal household insects of the United States . materials. As a tobacco feeder it out-ranks that species, and also appears to favorcertain medicinal plants not so often affectedby the Sitodrepa. Of household supplies it has been found,in the experience of the writer as well as ofothers, infesting cayenne pepper, ginger, rhu-barb, rice, figs, yeast cakes, and prepared fishfood. It has been reported as destructive tosilk and plush upholstery, and has done con-siderable damage to dried and preservedherbarium specimens in Washington. Ofdrugs it is partial to ergot and turmeric, andtobacco it de
Principal household insects of the United States . materials. As a tobacco feeder it out-ranks that species, and also appears to favorcertain medicinal plants not so often affectedby the Sitodrepa. Of household supplies it has been found,in the experience of the writer as well as ofothers, infesting cayenne pepper, ginger, rhu-barb, rice, figs, yeast cakes, and prepared fishfood. It has been reported as destructive tosilk and plush upholstery, and has done con-siderable damage to dried and preservedherbarium specimens in Washington. Ofdrugs it is partial to ergot and turmeric, andtobacco it devours in every form, in the leafand when made up into chewing plug, ciga-rettes, and cigars. This species is of about the same size andcolor as the drug-store beetle, but, as maybe seen in the figure (63, c), is more robust and the elytra are notstriated. The head is more prominent and the antennae are nearlyuniformly serrate, not ending in a three-jointed club (fig. 03, e). Thelarva, represented at d in curved position at rest, is more wrinkled. Fig. 64.—Lasioderma serricorue:Head of larva, shown above: legof larva below—much enlarged(original). - INSECTS AFFECTING CEREALS, ETC. 127 and hairy than that of Sitodrepa, and differs as well in the structure ofthe head and legs (see fig. 64). The papa, shown at fig. 63, b1 i* whiteand is incased, like other ptinids, in a fragile cocoon. THE WHITE-MARKED SPIDER BEETLE. (Jtinus fur Linn.) Two more species of this same family and of somewhat similar habitsto the two beetles just mentioned are sufficiently common in storerooms. and cellars, particularly of old houses, and especially in the North, toattract occasional notice. The more important of these is Ptinus fur,which may be called the white-marked spider beetle, to distinguish itfrom the allied Vt. brunneus, which is uniform brown in color. Thisbeetle is reddish brown, with four white bands on its elytra. It haslong antenme and legs and a more or less globular body, and strongl
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Keywords: ., bookcentury1800, bookdecade1890, bookpublisherwashi, bookyear1896
