Small Flattened Bark Beetlesnot illus

Family Monotomidae

Identification: Form distinctive: elongate, flattened, slender, parallel-sided. FW truncate, exposing tip of abdomen. Antennae with a club of 1 or 2 segments. Front coxae globular. 1.5-3.0 mm.

Members of this group usually occur under bark. They are generally very infrequently collected, but may sometimes be

SILKEN FUNGUS & LIZARD BEETLES, ETC. 175

taken in large numbers in molasses traps set in dense woods. Very little is known of the habits of either adults or larvae.

SILKEN FUNGUS BEETLES Family Cryptophagidae Identification: Usually light yellowish brown, sometimes brown or black, the body nearly always with fine silky pubescence. FW rounded, broadest near middle. Pronotum narrower, rounded laterally and broadest near middle; sides of pronotum often toothed or notched. Antennal club 3-segmented. Tarsi usually 5-5-5, 5-5-4 in some males. 1-5 mm.

Silken fungus beetles are found on flowers and foliage, in fungi and decaying vegetable matter. Some species live in nests of wasps or bumble bees. The group is fair-sized, with more than 160 N. American species.

LIZARD BEETLES Family Languriidae See also Pl. 6

Identification: Shape distinctive: very elongate-slender, parallel-sided, the FW, pronotum, and head nearly equal in width. Shining black or blue-black, the pronotum and sometimes also the head and FW reddish, orange, or yellow. Antennal club 4- to 6-segmented. Tarsi 5-5-5, appearing 4-4-4. 5-10 mm.

Lizard beetles are common on flowers, leaves, and stems of various plants. Larvae are stem borers, and some are of economic importance. The Clover Stem Borer (Pl. 6), Languria mozardi Latreille, often causes considerable damage to clover.

ROOT-EATING BEETLES Family Rhizophagidae Not illus. Identification: Similar to Monotomidae (p. 174), but with front coxae transverse. FW short, truncate, exposing tip of abdomen. 2-5 mm.

Adults and larvae of these beetles are usually found in rotten,

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