Handsome Fungus Beetlessee also PL

Family Endomychidae

Identification: Similar to Mycetaeidae (p. 179), but 3rd tarsal segment very small, the tarsi appearing 3-segmented. Forward angles of pronotum prolonged, partly enclosing head. Shining black or brown, often with red or orange markings. Antennal club 3-segmented. 3.5-10.0 mm.

Members of this usually uncommon group occur in fungi, under bark, beneath logs, and in rotting wood. They are smooth, shiny, attractively colored, and resemble ladybird beetles. When disturbed they often draw in their appendages and play dead. Larvae occur in the same situations as adults and feed on fungi or rotten wood.

LADYBIRD BEETLES Family Coccinellidae See also Pl. 6 Identification: Shape often distinctive: broadly oval to nearly spherical, strongly convex dorsally, nearly flat ventrally. Tarsi apparently 3-3-3, actually 4-4-4 (3rd segment minute). Head partly or completely concealed by pronotum. Often brightly colored — yellow, orange, or reddish with black markings or black with yellow to reddish markings. Antennae short, club 3- to 6-segmented. 0.8-10.0 mm.

This is a large group with many abundant and well-known species. Both adults and larvae of most species are predaceous on aphids, scale insects, mites, and other injurious forms, and are often quite numerous where these pests occur. Some species have been used commercially to combat scale insects injurious in orchards. Adults frequently overwinter in groups, sometimes in tremendous numbers. Adults of the Two-spotted Ladybird Beetle (Pl. 6), Adalia bipunctata (Linn.), often overwinter indoors, and may be seen at windows in fall or spring. Two species of Epilachna are plant feeders, both as larvae and adults, and are serious garden pests: the Mexican Bean Beetle, E. varivestis Mulsant, is yellowish, with 8 small dark spots on each elytron (front wing); the Squash Beetle, E. borealis (Fabri-cius), is yellowish, with 7 large dark spots on each elytron.

0 0

Post a comment