A Revision of the Tenebrionid Subfamily Conintina

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A Revision of the Tenebrionid Subfamily Conintina
Thomas Lincoln Casey
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In a number of forms it is difficult to say whether the prosternal lobe is mar- gined or not, there being some variability in the character, and, when the margin becomes feeble, as in of acico fit's and longi- collis, the surface must be held so as to reflect the light at grad- ually varying angles in order to recognize the marginal con- vexity ; in others, however, the margin takes the form of a strong convex bead, defined by an unequivocal groove, but the character is not altogether satisfact...ory.
The forms at present in my cabinet may be known as fol- lows : Larger species, never under 10, 0 mm. In length 2 Small species, never exceeding 10. 0 mm. In length 15 2 Prosternal lobe margined throughout its contour.. 3 Prosternal lobe margined at the sides but not at apex 12 3 Prothorax broadly rounded at the sides, sensibly wider behind the middle than at base. Form parallel, convex, deep black, polished throughout, glabrous ; head rather strongly but sparsely punctured, not impressed at the lobes, the anterior canthus slightly less prominent than the posterior ; prothorax one-half wider than long, the sides gradually more rounded and converging apically, the apex barely three-fifths as wide as the base, the sinus circularly rounded but not deep, the angles obtusely rounded ; surface very finely and remotely punctate, less finely but still sparsely so later- ally, the marginal bead rather fine, not at all incurvate at base ; scutellum large, broadly triangular ; elytra parallel, as wide as the prothorax, rather more than one-half longer than wide, very obtusely rounded at tip, the surface nearly smooth, somewhat finely though strongly, very remotely punctate, but little more coarsely or less sparsely so toward the sides, the margins very finely reflexed ; prosternum finely, sparsely punctate, the process strongly grooved and beaded about its entire contour ; hind femora rather finely but deeply, sparsely punctate, the abdomen minutely, very remotely.


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