Scolytus multistriatus

Adult body length 2.5–5.0 mm. Head, pronotum, and abdominal venter dark red-brown; legs light brown; antennae yellow-brown; elytra usually dark red-brown but may be brown, with pronotal and elytral surfaces frequently containing patches of red-brown mixed with dark red-brown. Head with median area above mandibles bearing dense patch of long, yellow, hair-like setae. Frons in male strongly convex when viewed laterally, weakly aciculate, setae sparser, shorter, less than width of eye; epistoma feebly entire. Antennal club flattened, thinner on apical half, irregularly ovoid, setose with partial septum, two sharply arcuate sutures visible. Pronotum surface smooth, shining, punctures on disc fine, shallow, moderately abundant, larger and more abundant laterally and on apical constriction; apical and anterolateral margins bearing sparse, erect, yellow, hair-like setae. Elytra with sides sub-parallel on apical half, narrowing to subquadrate, smooth apex; interstriae weakly impressed, more than twice width of striae, interstrial punctures uniseriate, smaller than those of striae, bearing sparse, long, semi-erect yellow hair-like setae (may be abraded). Metepimeron greater than half-length of metanepisternum. Abdominal ventrites: length of ventrite 5 greater than combined lengths of ventrites 3 and 4; basal margin of ventrite armed with a long, smooth, conical spine with its base extending from basal margin to half length of segment. Body moderately, uniformly covered by long, fine, yellow erect hair-like setae, these longer than width of midpoint of eye.

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