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The common whitetail or long-tailed skimmer (Plathemis lydia) is a common dragonfly across much of North America, with a striking and unusual appearance.The male's chunky white body (about 5 cm or 2 inches long), combined with the brownish-black bands on its otherwise translucent wings, give it a checkered look.
These insects feed on decaying organic matter and fungi. They are often found in greenhouses. Their larvae are up to 6 mm long, white, slender and legless, with a black head and smooth semi-transparent skin which reveals the contents of the digestive tract. Sex determination in Sciara is a different mechanism.
The first instar follows the hatching of the egg into large white larvae. The larvae are light yellow with distinctive brown heads and have soft bodies. The larvae appear to be very hairy. Following a moulting, the larvae enter the second instar. They have tubercles covered with black hair. In the third instar, large white larvae display more ...
Pieris rapae is a small- to medium-sized butterfly species of the whites-and-yellows family Pieridae.It is known in Europe as the small white, in North America as the cabbage white or cabbage butterfly, [note 1] on several continents as the small cabbage white, and in New Zealand as the white butterfly. [2]
The sides of the mesonotum have whitish longitudinal stripes. The postscutellum is black. [8] The head has blue-green eyes. [7] The face shows a raised longitudinal rib. These flies have rather wide wings heavily marked with brown bands. The legs are yellow-brown. Eggs are oval, white. Larvae are white, spindly shaped, up to 8 mm long. [9 ...
Larval Sciaridae are slender and lack legs. They are white except for a black head, and their skin is slightly transparent so the contents of the gut are visible. [4] The abdominal creeping welts lack sclerotised spicules; this differentiates Sciaridae from the related family Mycetophilidae, in which sclerotised spicules are present. [6]
The adult Craesus septentrionalis has a black head, thorax and anterior part of the abdomen while the posterior part of the abdomen is chestnut brown. The wings are clear. The legs are broader near the feet than they are close to the body. The larva has a black head, yellow collar and greyish-green slender body with longitudinal rows of black ...
All individuals have a conspicuous white frons at the front of the head. [2] The wings have a brown patch at the base and noticeable black pterostigma . [ 3 ] It may be confused with similar species, including the black darter ( Sympetrum danae ), ruddy darter ( Sympetrum sanguineum ) and common darter ( Sympetreum striolatum ), however is ...