"General: Body 1.73 times as long as wide; dorsal surface moderately shining and without pubescence, most of ventral surface with short, sparse pubescence. Head: Dull orange, a darker spot on vertex; antennal insertions and apical margin of clypeus reddish. Front roughly punctate, punctures small to moderate, dense at middle. Clypeus with basal suture obsolete, moderately wider apically than at base. Antennae of male about two-thirds length of body, dull orange, apical half a little darker. Pronotum: With dark markings on a dull orange background. Markings dark reddish, not sharply delimited, consisting of four longitudinal, subparallel stripes, separated throughout, inner two widest at middle, leaving a median light stripe, somewhat outwardly arcuate; outer dark stripes broader than inner, broadest behind middle, rather narrowed anteriorly; in middle at each side with a small, dark red spot. Punctation dual, surface irregularly, finely wrinkled, smaller punctures larger than usual, distinct; larger punctures small, more or less coarse. Elytra: Background color creamy yellow; dark markings red, punctures black. Each elytron with dark markings as follows: a transverse undulate postbasal band from suture to humerus; a small subhumeral spot; a moderate-sized postmedian spot from suture to fifth stria, lateral to postmedian spot a rather small spot centered on seventh stria and touching lateral margin; two small spots near apex, one centered just before apex of fourth interval, other centered before apex of sixth interval. Punctures primarily confined to dark markings, large and distinctly arranged in rows only on dark markings, much smaller, very sparse on light areas; punctures on dark markings forming seven disconnected rows, these punctures rather smaller apically; outer row of punctures distinct at apex, inner row obsolete at apex. Ventral surface: Ventral surface, legs, and pygidium dull orange with reddish evident; prosternum, front coxae, mesosternum, mesepimeron, and first abdominal segment at base with dull yellow, each femur ventrally before apex with a yellowish spot. Fifth abdominal segment of male at center feebly depressed. Anterior margin of prosternum in male evenly arcuate, not produced. Length: 4.25 mm" (White, 1968: 52).
"This species is most similar to bivius and is readily distinguished from it. In bivius, the rows of punctures are continuous and not interrupted by the light areas; in disruptus, the rows are obsolete or absent in the light areas. Also bivius ranges in length from 4.3 to 6.4 mm; the one individual of disruptus is 4.25 mm long. The specific name disruptus refers to the disconnected rows of punctures of the elytra" (White, 1968).
USA: CO (White, 1968).