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usual, not very finely faceted and at less than their own length from the base, the carinæ fine and feeble, extending to the apex but obsolete far before the base; antennæ rather long, slender, scarcely at all incrassate, the outer joints somewhat longer than wide, the last oval, scarcely more than one-half longer than the tenth, the second and third much elongated, equal; prothorax very moderately transverse, evidently though not greatly wider than the head and much narrower than the elytra, parallel and evenly but feebly rounded at the sides, scarcely impressed; elytra rather transverse, the suture evidently longer than the prothorax; abdomen wide, slightly narrower than the elytra, parallel, with feebly arcuate sides and thick margins, the fourth and fifth tergites equal, the sixth (♀) broadly arcuate apically; mesosternal process barely extending to the middle of the coxæ, gradually narrowed to the rather acute but in no way prolonged or aciculate apex, which is at a considerable distance from the large equilatero-triangular metasternal projection. Length 3.0 m.; width 0.83 mm. Virginia (Newport News). |
The rather large size, remarkable antennæ and peculiar infralateral carinæ of the head will serve to identify this species very readily.
The following ten species have the sixth tergite of the male very obviously crenulate at apex; they are probably for the most part fungivorous in habits:
| Atheta citata n. sp.—Nearly parallel, rather slender, moderately convex and shining, the micro-reticulation fine, rather feeble except on the pronotum, where it is dense and very strong, giving a dull lustre; abdomen minutely, feebly, transversely strigilate; punctures fine, asperulate, close on the elytra; color pale testaceous, the head dark piceous, the prothorax paler piceous and the abdomen with a large blackish cloud posteriorly; head small, the eyes at nearly their own length from the base, the carinæ fine, not quite entire; antennæ pale brown, gradually testaceous basally, moderately short, thick, gradually incrassate, the outer joints moderately transverse, the last gradually pointed and fully as long as the two preceding, the second and third elongate, the latter very slightly the longer; prothorax large, convex, transverse, as wide as the elytra and very much wider than the head, parallel, well rounded at the sides, impressed along the median line, except toward apex, and with a very feeble oblique impression basally at each side of the middle; elytra transverse, only slightly longer than the prothorax; abdomen slightly narrower than the elytra, long, parallel, narrowing very slightly apically, the fifth tergite slightly longer than the fourth, the sixth (♂) broadly arcuato-truncate, the crenulures rather small and only moderately strong; mesosternal process moderate, separated from the broad but angulate metasternum by a rather long and very deep interval; hind tarsi very slender, the joints elongate, the first a little shorter than the second. Length 2.5 mm.; width 0.52 mm. New York (Catskill Mts.). |
Well distinguished from either of the two following species by its very strongly micro-reticulate pronotum and antennal characters.
