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and distinctly more prominent than the eyes, the carinæ very fine, far from entire; antennæ nearly as in the preceding but less stout; prothorax only slightly transverse, distinctly wider than the head and narrower than the elytra, just visibly widest before the middle, the sides moderately and subevenly arcuate, unimpressed; elytra as in definita, the suture distinctly longer than the prothorax; abdomen very evidently narrower than the elytra, parallel, with straight sides, the fifth tergite not at all narrower but, if anything, wider than the first. Length 1.5 mm.; width 0.3 mm. Rhode Island (Boston Neck). |
A very small species differing from definita in the smaller and more convex eyes, more quadrate head, with the tempora more basally swollen and in its parallel abdomen; from repleta it differs in its smaller size, more slender form, relatively smaller head and prothorax, the former less transverse, narrower abdomen and shorter antennæ.
| Atheta (Micrearota) gregaria n. sp.—Form and coloration somewhat as in loricula but much more shining, the reticulation fine and subobsolete though evident, that of the abdomen disposed in feebly evident transverse broken lines; head relatively smaller than in loricula, the eyes larger and more convex though at rather more than their own length from the base, the tempora slightly swollen, the carinæ moderately short, unusually stout, the first three joints as usual, the outer joints transverse but with the ninth shorter than the tenth, the last much longer than the two preceding, gradually arcuate; prothorax moderately transverse, much wider than the head and distinctly narrower than the elytra, slightly widest near apical third but with the sides very broadly and subevenly rounded, unimpressed; elytra only moderately transverse, the suture much longer than the prothorax; abdomen only a little narrower than the elytra, parallel; first three joints of the hind tarsi decreasing rapidly in length, slender. Length 1.5-2.2 mm.; width 0.3-0.4 mm. Iowa (Cedar Rapids),—Brendel. |
This species is distinguishable from the three preceding by the smaller head and more evident though feeble micro-reticulation, and, from loricula, by the decidedly longer elytra and feeble sculpture.
| Atheta (Micrearota) pristina n. sp.—Moderately stout, very feebly convex, colored as in the preceding, the lustre moderately shining, the reticulation rather coarse and evident though feeble, the punctures minute and not dense; head about as long as wide, the eyes convex, prominent and well developed, as long as the tempora, which are not at all swollen and scarcely so prominent as the eyes, the carinæ vestigial and short; antennæ short and rather stout, slightly incrassate distally, the ninth and tenth joints mutually similar and transverse, the latter simply a little the larger, the last rather short and obtuse, not longer than the two preceding; prothorax small, only a little wider than long, very little wider than the head but very much narrower than the elytra, |
