Batyle suturalis Classification Family Cerambycidae > Subfamily Cerambycinae > Tribe Trachyderini > Genus Batyle Diagnostic Features of Larvae Larva. A small species of very shining texture; buccal margin scarcely chitinized: anterior edges of hypostoma swollen and very regularly carinated; gula sunken. Presternal ochraceous places small, square, and separated by the distance of their width; posterior area of pronotum irregularly striate, then coarsely granulate behind, the striae rather widely separated and sharply impressed. Ampullae finely granulate, very smooth and shining between granulate area; pleural discs a rather conspicuous granulate area; spiracles very small, nearly orbicular, about as large as ocellus. Pupa: Pronotum glabrous except for a group of hairs on anterior angles and a few on mesonotum and metanotum; abdominal terga Bearing very slender acute spines arranged about as in Knulliana, but each having a long hair from base; seventh bearing eight recurved spines on posterior margin; a few very small points on eighth; Lateral region of terga hairy. Adapted from Craighead (1923). Biology and Economic Importance The larva has been found only in small dead twigs of Quercus and Castanea which it completely hollows. Not much of the frass is extruded and pupation takes place in the early summer between two wads of fibrous chips. It is often found in branches girdled by Elaphidion. The adult is common on the flowers of Chrysanthemum leucothoeca and Achillia millefolium. Adapted from Craighead (1923). Selected References to Larvae Specimens Craighead, 1923