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The firebug, Pyrrhocoris apterus, is a common insect of the family Pyrrhocoridae.Easily recognizable due to its striking red and black coloration, it may be confused with the similarly coloured though unrelated Corizus hyoscyami (cinnamon bug or squash bug).
Antennae are long and thin. The basic color of the body is black. They show a very prominent crown of thorns on thorax and red and black warning colors on the edge of the abdomen (laterotergites). On the hemelytra are present a few red markings. Legs are rather long, with red and black femurs and completely red tibiae.
The round abdomen is a deep black (occasionally brownish), with a red (sometimes orange) longitudinal stripe on the upper surface and an hourglass-shaped scarlet streak on the underside. [22] Females with incomplete markings or all-black abdomens occasionally occur. [23] The cephalothorax is much smaller than the abdomen, and is black. [21]
When a black widow spider bites, it typically causes a painful pinprick sensation. The site of the bite then swells slightly and forms a red rash. You might see two fang marks inside the bite area ...
Latrodectus hesperus, the western black widow spider or western widow, is a venomous spider species found in western regions of North America. The female's body is 14–16 mm (1/2 in) in length and is black, often with an hourglass-shaped red mark on the lower abdomen. This "hourglass" mark can be red, yellow, and on rare occasions, white.
Neither puncture marks nor redness are necessarily seen. A few people go on to have widespread symptoms. Pain typically starts at the bite site then travels up (e.g. from foot to thigh to trunk), followed by generalized pain (in back, trunk, chest or shoulder).
Pain may be extreme. [7] More severe infections can result in vesicles (pox or insect bite-like marks), blisters, and petechiae (small purple or red spots), with possible skin necrosis (death). [7] Lymph nodes may be swollen and lymphedema may occur. Occasionally a red streak extending to the lymph node can be seen. [8]
Vespula squamosa, or the southern yellowjacket, is a social wasp.This species can be identified by its distinctive black and yellow patterning and orange queen. [1] This species is typically found in eastern North America, and its territory extends as far south as Central America. [1]