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piceous, the elytra slightly paler, the head and abdomen black; legs very pale, the antennæ fuscous, but slightly paler basally; punctures small but distinct, well separated dense on the elytra; head but slightly transverse, the eyes at about their own length from the base, the carinæ fine, only present in basal half; antenæ rather long, gradually somewhat strongly incrassate distally, the outer joints but little wider than long, the eleventh small, pointed, not quite as long as the two preceding, the second and third much elongated; prothorax rather small, only moderately transverse, distinctly wider than the head and correspondingly narrower than the elytra, the sides broadly rounded, straighter basally, unimpressed; elytra moderately transverse, the sides diverging slightly, much longer than the prothorax; abdomen parallel, slightly narrower than the elytra, the fifth tergite but little longer than the fourth, the sixth (♂) broadly, rectilinearly truncate at apex, the edge flat but with small punctures dividing it into short sections, somewhat resembling crenulation; mesosternum extending to the middle of the coxæ, where it is acutely angulate but not aciculate, very widely separated by a depressed and narrowly convex ridge from the extremely short and broadly rounded metasternum; first four joints of the hind tarsi decreasing gradually in length. Length 2.8 mm.; width 0.66 mm. California (found flying near Stockton). |
The sternal and tarsal characters will distinguish this species very readily.
| Atheta aperta n. sp.—Rather stout, very moderately convex, not very shining, the punctures asperulate and close black, the pronotum dark piceous, the elytra paler, piceous-brown, faintly clouded at the external apical angles; legs pale, the antennæ blackish; head rather transverse, the eyes large, convex, at much less than their own length from the base, the carinæ very fine and feeble but entire; antennæ moderately long, feebly incrassate, the outer joints distinctly wider than long, the second distinctly shorter than the third; prothorax transverse, parallel and rounded at the sides, much wider than the head and distinctly narrower than the elytra, parallel, very feebly narrowed apically, the fourth and fifth tergites equal in length, the sixth (♂) feebly sinuato-truncate at apex, the edge subeven, limited at each side by a small thick carlike process, only very slightly projecting posteriorly; mesosternal process aciculate, the metasternal large, angulate; basal joint of the hind tarsi shorter than the second. Length 2.7 mm.; width 0.7 mm. California (Arcata, Humboldt Co.). |
This species is of an ordinary type but may be identified probably by the above characters.
| Atheta discipula n. sp.—Nearly parallel, only slightly convex, dark blackish-piceous, the prothorax paler, the elytra still paler, the abdominal segments each paler apically, the legs very pale; antennæ dark brown; punctures very fine and close-set; head moderate, the eyes convex and prominent, at much less than their own length from the base, the carinæ fine and not quite entire; antennæ well developed, rather slender, only just visibly incrassate |
