Description
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Oblong, shining, black; densely clothed (except along the middle of the head and rostrum, on two vittæ on the disc of the prothorax, on numerous irregular, confluent streaks or patches on the elytra, and along a broad space down the middle of the metasternum and the ventral segments 1—4) with white or pale brown scales—usually pale brown, with a broad stripe along the sides of the elytra and the legs white,— and also set with minute widely scattered adpressed hairs. Rostrum about as long as broad, depressed on each side of the smooth, stout, arcuate, median carina, which is widened behind and encloses the inter-ocular fovea; eyes large, rounded, not very prominent; antennæ long, the scape reaching the anterior margin of the prothorax. Prothorax strongly transverse, narrowed in front, bisinuate at the base, depressed or flattened down the middle, with scattered, irregular, foveiform punctures. Elytra subparallel in their basal third in ♂, broader and widened to the middle in ♀, mucronate at the tip, the humeri prominent; coarsely punctate-striate, the punctures appearing small where covered by the dense, confluent, large patches of scales, the interstices flattened, the bare portions smooth. Anterior tibiæ obsoletely denticulate and with a long terminal claw.
Length 10—14, breadth 3½—5¾ millim.
Champion in: David Sharp & G. C. Champion, Oct. 1911. Biol. Centr.-Amer.,Coleoptera, vol. 4, pt. 3: 261.
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- Biologia Centrali-Americana
Distribution
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Hab.NICARAGUA, Chontales¹ (Belt, Janson, Richardson); COSTA RICA, Reventazon (Biolley), Turrialba, Zarzero (U. S. Nat. Mus.).
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- Biologia Centrali-Americana
Physical description
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I have seen about a dozen examples of this species, mostly females, varying very little in the arrangement of the scales on the elytra. The prothorax is constantly trivittate and the under surface bare down the middle. E. impositus cannot possibly be included in Eustales, the type of which is Curculio thunbergi, Dalm.
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- cc-by-3.0
- copyright
- Biologia Centrali-Americana