Stegnocephala cuprascens (Suffrian, 1863)

General description: 

Bright yellow-red body; ends of feelers, chest and legs nearly black, the elytra copper blue; the pronotum flat as glass, the dots and stripes striated, with rib-shaped, punctured interspaces. [Translated from the original German in Suffrian, 1863].


S. cuprascens is closely related to S. perplexa, but the color of its elytra fall more towards a blue; the furrows on the back are deeper, chest and legs are colored quite differently. The head is flat, with a somewhat back-stepping neck and frons. The frons is shallowly pressed downwards along its length. A clear rim supports the frons sideways against the lower inner rims of the eyes and the cheeks connected to those eyes. The surfaces are finely punctured only between the antennae roots; otherwise they are flat as glass and glossy bright yellow-red. Only the extended eyes, which are deeply grooved in the middle, and, in the male, pressed together with the upper, inner rims of the forehead, are black. The slender antennae do not measure half the length of the body. The root segment is very thin, at the top only slightly broad and arching outwards. The second segment is 4.5 times shorter but a little thinner, almost as wide as it is long. The succeeding segments are notably narrower, the third is two times, the fourth and fifth each three times, longer than the second. The following segments are a little longer, each equally long, slightly pressed together and widened, and end with a triangular tip of the last segment. The two lowest segments are murky yellow, the two above these, along with the root of the fifth segment, are bituminous brown; the upper ones are black and covered with thin hair. The pronotum is short and wide, and the front 2/3 of its length vaults over in a sphere. The pronotum is pressed tight against the deep, withdrawn, sharp rectangular front edges. The softly curved sides, which finely line the wide and sharp hind edges, run together in the front almost in straight lines. The hind edge is wide on either side, but not deeply hollowed out. After that, the very short mid-tip merges with no notable corner. Either side in front of the mid-tip lies a short but wide and rather deep cross-indent. The surfaces are not remarkably punctured; they are glossy murky yellow. The scutellum extends into a triangle, measures 1.5 long as wide, softly rises at the back without cutting off abruptly, bears faint front dimples, and is glossy blue-black. The elytra are a little longer than they are wide, in the front wider than the pronotum, and are tightly pressed together behind the wide, humpy extended shoulder bumps. They then narrow into wide arches and round off short at the tip. An indent crosses the pronotum in the front, behind the raised edge of the root; the pronotum rises in a hump into the scutellum tip, its side flanks fully pulled downwards. The puncture-stripes are very regular, form from deep, furrowed engraved punctures, and emerge through the cross-indent at the root. The fifth stripe widens out in the front on the inside of the shoulder hump into a triangular indent. The interspaces are curved, wide, rib-shaped, and dispersedly punctured. The color is a glossy iron blue that falls into a copper brown; a specimen from the Museum Clark is decidedly iron blue. The pygidium and under sides are dispersedly but clearly punctured, and covered with a thin layer of hair. The pygidium and the abdomen are pale yellow; the washed-out rim and the middle of the underside are dark. These colors can be even more notably observed in the aforementioned specimen from the Museum Clark. The hind chest is pitch-black; the mid and front chest are again bright yellow. The front chest is rectangular, flat, and clearly punctured in wrinkles, ending at the back with sharp, protuberant hind edges almost cut off abruptly. The midfield is deeply furrowed at the back; the front edge extends into a wide cup shape. The legs are of moderate thickness; shins and foot segments are black. The front thighs are yellow with black tips; the upper half of the middle set of thighs, and the upper 1/3 of the hind set of thighs, along with the hips, are yellow. The last segment of the male is widely pressed down in the middle; that of the female is pressed down with a rather large, glossy groove.

[Translated from the original German in Suffrian, 1863].


Brazil (Museums Hal., Baly, Clark; in Clark, Rio de Janeiro was indicated as place of origin). [Translated from Suffrian, 1863].

Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith