30
Memoirs on the Coleoptera.
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than the second. Length 2.0 mm.; width 0.53 mm. Pennsylvania (Philadelphia). |
Readily distinguishable by the male sexual characters, strongly asperate sculpture and well marked coloration.
The following nine species can be recognized by individual peculiarities of sculpture, coloration or male sexual characters; they all belong to typical Atheta, but in no case is the sixth tergite clearly crenulate at apex in the male, so far as known.
| Atheta strigulosa n. sp.—Large, rather stout, moderately convex, feebly shining, the abdomen polished as usual but with extremely fine, feeble and extremely close transverse strigulation; punctures fine, close and asperate; color brownish-piceous, the head and abdomen nearly black, the elytra and legs pale brown; antennæ pale basally; head rather small, the eyes at evidently less than their own length from the base, the carinæ fine, not quite entire; antennæ moderately long, only feebly incrassate, the second and third joints long and equal, the tenth but slightly transverse; prothorax rather transverse, parallel and rounded at the sides, not large, much wider than the head but also very distinctly narrower than the elytra, with a small deep basal impression; elytra large, rather transverse, much longer than the prothorax; abdomen parallel, much narrower than the elytra, the fourth and fifth tergites equal in length; sterna as usual, the mesosternum prolonged and finely aciculate, the metasternum projecting and angulate; basal joint of the hind tarsi scarcely more than half as long as the second. Length 3.5 mm.; width 0.8 mm. New York (Catskill Mts.). |
I have described this species from the female because of its very distinct abdominal sculpture, distinguishing it from any other species of true Atheta here made known; also because of its large size and other striking characters. The male is unknown.
| Atheta remulsa n. sp.—Moderately convex, subparallel, slightly shining, minutely, asperulately punctate, loosely on the head and pronotum, closely on the elytra; color dark piceous, the head darker, the abdomen black, the elytra and legs pale; head moderate, with a small central fovea, the eyes moderately prominent, at about their own length from the base, the carinæ fine, not quite entire; antennæ rather short, gradually distinctly incrassate, the second and third joints equal in length, cylindric and obconic respectively, the outer joints rather strongly transverse; prothorax transverse, parallel, rounded at the sides, much wider than the head and distinctly narrower than the elytra, feebly and finely impressed along the median line; elytra distinctly wider than long, much longer than the prothorax; abdomen parallel, distinctly narrower than the elytra, the fourth and fifth tergites equal in length, the sixth (♂) with an acute and nearly flat tooth projecting posteriorly at each side, the apex broadly sinuate medially between two feeble projections, each of which is separated from the lateral teeth by a deep and narrow sinus, the edges even; sterna as usual, the mesosternum not very acutely |
