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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]
A. besseyi is an ectoparasitic nematode which means it feeds on the plant tissue externally. This nematode is most often associated with a disease in which the leaves of the rice plant turn white in the meristematic regions followed by necrosis.
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 ...
The head of a small white butterfly (Pieris rapae). Note the upward pointing labial palpi on both sides of the coiled proboscis. Comparison of moth and butterfly dorsal anatomy. Adult Essex skipper (Thymelicus lineola) Pupa of a sphingid moth Caterpillar of the subfamily Arctiinae Eggs of the buff-tip (Phalera bucephala), a notodontid moth
Melanchroia chephise, the white-tipped black or snowbush spanworm, is a moth of the family Geometridae. It is found from Florida and Texas, south to Paraguay. Strays have been recorded from Arizona, Oklahoma, Arkansas, Kansas and Illinois. The wingspan is about 33 mm. Adults are on wing from September to December.
The larvae are white, legless, with a darker colored head and are often C-shaped. The weevil overwinters as a larva deep in the soil, or as an adult under stones or other sheltered places. Larvae feed on roots and can weaken or kill smaller plants. They are whitish, C-shaped, and about 8 mm long when full grown, much smaller than white grubs.
The black gregaria larvae do not exhibit basking behavior which is usually present in dark-colored species that want to increase their body temperature via exposure to the sun. Although the gregaria larvae are shown to heat up more rapidly than the solitaria larvae, gregaria caterpillars have less body mass, which is the main contributing ...
Anguina tritici was the first plant parasitic nematode to be described in the literature in 1743. It causes a disease in wheat and rye called "ear-cockle" or seed gall. . Originally found in many parts of the world but has been eradicated from the western he