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Members of the subfamily Sarcophaginae are small to large flies 0.16–0.9 inches (4.1–22.9 mm) with black and gray longitudinal stripes on the thorax and checkering on the abdomen. Other key features include red eyes and a bristled abdomen. Abdominal sternites II and III are free and cover the margins of tergites.
On the hemelytra are present a few red markings. Legs are rather long, with red and black femurs and completely red tibiae. This species presents an evident sexual dimorphism. In fact the underside of the female's abdomen is completely smooth, while the males at the end of the abdomen have a round outgrowth. [3]
The forewings are a bright yellow; the hind wings have a yellow ridge and are primarily red with a black center. The male's abdomen tip finishes like a club tail. The 7th and 8th tergum (abdominal segments) both extend outwards along the sides, giving it the gradual shape of a hexagon.
The red-tailed bumblebee is typically distinguished by its black body with red markings around the abdomen. Worker females and the queen look similar, though the queen is much larger than the worker females. Males typically have the red and black coloration with a yellow band around the abdomen and yellow markings on the face.
It is shiny black, and there is one red spot on each elytron. The remainder of the body is black as well, but the abdomen is either yellow or red. It is sometimes confused with the "two-stabbed lady beetle", Chilocorus orbus, which is widespread in California. [2]
Some have an abdomen with a red background color instead of black. They can be identified by their distinctive markings, their occurrence only in colonies, and a characteristic, rapid, side-to-side flight pattern prior to landing. All females are capable of stinging. Yellowjackets are important predators of pest insects. [1]
The species Pimpla rufipes has several synonyms, which include Pimpla hypochondriaca and Pimpla instigator. Pimpla instigator (Fabricius, 1793) has been permanently rejected under the International code of Zoological Nomenclature, since the original name Ichneumon instigator Fabricius, 1793 is a junior homonym of Ichneumon instigator Rossius, 1790, which represents a pimpline species outside ...
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.