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narrower than the elytra, parallel but with the border narrowing gradually behind, the fifth tergite longer than the fourth; sixth ventral plate in the type prolonged behind, broad, circularly rounded at apex. Length 2.0 mm.; width 0.6 mm. California (Siskiyou Co.). |
Recognizable by the deep black color of every part of the body and legs, the large subquadrate elytra and other characters as mentioned above.
| Atheta (Nemota) filiola n. sp.—Similar in coloration, form and lustre, except that the body is not so stout and the legs not deep black, but blackish-piceous, the vestiture rather shorter and finer; head similar but relatively larger and except that the eyes are rather less prominent and at not at all more than their own length from the base, the tempora barely at all swollen; antennæ slender basally, but more distinctly and rapidly and evidently more strongly incrassate distally, the outer joints more transverse, the last a little smaller, the third evidently shorter than the second; prothorax nearly similar, convex, less evidently wider than the head and not quite so greatly narrower than the elytra, the sides more parallel and more rounded; elytra narrower and more nearly as long as wide, very much longer than the prothorax; abdomen distinctly narrower than the elytra, nearly similar, the hairs shorter, finer and more numerous, the tergites all a little shorter but similarly proportioned. Length 1.75 mm.; width 0.48 mm. California (San Bernardino Mts.),—Fall. |
As stated in the description, this species, though allied rather closely to paganella, may be distinguished by its narrower form, shorter vestiture, more incrassate antennæ and other features.
| Atheta (Nemota) timida n. sp.—Form, coloration, lustre and sculpture nearly as in filiola, the legs blackish-piceous; head nearly similar, parallel, the eyes rather convex, smaller, at much more than their own length from the base, the antennæ slender basally, gradually rather strongly incrassate distally, the outer joints slightly transverse, the ninth shorter than the tenth, the last rapidly pointed, as long as the two preceding, the second and third obconic, the latter the shorter; prothorax rather short and transverse, distinctly wider than the head and correspondingly narrower than the elytra, nearly parallel, with the sides subevenly and moderately arcuate, the basal impression distinct; elytra evidently shorter than wide, very much longer than the prothorax, not quite parallel; abdomen distinctly narrower than the elytra, parallel, the punctures fine, sparse, the hairs rather coarse; fifth tergite much longer than the fourth, the sixth ventral plate in the apparently male type produced behind, with the apex broadly and arcuately subtruncate. Length 1.8 mm.; width 0.48 mm. California (Sta. Cruz Mts.). |
The sixth ventral of the male is more subtruncate at tip than in the broader and heavier paganella, and from filiola, it may be known by its longer antennæ, more prominent eyes and shorter and more transverse prothorax and elytra.
