It is native to the Palearctic, Southeast Asia, and North Africa. These spider-shaped beetles have a globular body, long thin legs, and no wings. When viewed from above, it resembles a spider. There are also Whitemarked spider beetles and the Smooth spider beetle. The whitemarked beetle is characterized by its patches of white hair that go across its wings. This insect is tolerant of cool conditions … It was first described by Paweł Czenpiński in 1778. Spider beetles also have round bodies with a smooth carapace, or outer shell, which adds to the spider-like appearance. Gibbium psylloides, also known as the hump beetle or the smooth spider beetle (the latter of which it shares with Gibbium aequinoctiale), is a species of spider beetle in the genus Gibbium. Adults of the two species can be separated as on the shape of the antennal fossa and male genitalia characters.See Insects and Mite Pests in Food - an illustrated key weblink It … Resembles Mezium americanum, can be separated from Gibbium aequinoctiale and G. psylloides with head and thorax entirely bare, while M. americanumhead and thorax with dense covered of mall scales and scale-like hairs. High temperature effects on water loss and survival examining the hardiness of female adults of the spider beetles Polyphaga (Water, Rove, Scarab, Long-horned, Leaf and Snout Beetles)Bostrichoidea (Carpet, Powder-post and Death-watch Beetles) Smooth spider beetles, on the other hand, have the same dark color all over their body, which makes them look like a mite at times. Like the other spider beetles it can live of a wide range of dry animal and vegetable substances. Whitemarked beetle identification. Species aequinoctiale (Smooth Spider Beetle) Synonyms and other taxonomic changes references to Gibbium psylloides outside the Old World are most likely this species

2009. Gibbium aequinoctiale, the smooth spider beetle, is a species of The head and legs are cream colored. The smooth spider beetle lacks hair and is rather reminiscent of a small glass drop that moves slowly around on its long legs. The beetle’s name comes from the shape of the adult beetle, which has a "humped" appearance. They range in colour from reddish brown to black and in size from 1 to 5 mm (0.04 to 0.2 inch). Larvae are curved and whitish in color. Mite like appearance, distinnctive due to the pronotum and elytra being devoid of setae and punctation; Adult body length c. 1.7-3.2mm; body colour variable from red to nearly black, with dense, short, yellow hairs beneath.This insect is tolerant of cool conditions and can survive for long periods without food supplies. It occurs as a grain pest in warm countries such as India. smooth spider beetle Smooth spider beetle (Gibbium psylloides). The most common types of spider beetles in North America is the Mezium americanum, or American Spider Beetle. Contributors own the copyright to and are solely responsible for contributed content.prefer dark areas, mainly in houses, flour mills, occasionally warehouses, hospitals, storeswide variety of dead organic materials; may be a dry stored product pest stored seeds, wheat, bran, stale bread, decaying animal and vegetable refuse, rat droppings, stored wheat, baby food, dog biscuits, cereals, woolens, towels, leather, paste, and tallow and opium cakehas a remarkable ability to avoid drying out and can withstand temperatures as high as 56°C (133°F) (Yoder Yoder JA, Chambers MJ, Tank JL, Keeney GD. Color: The adult American spider beetle is a shiny, reddish brown to almost black.

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