Pogonocherus mixtus Classification Family Cerambycidae > Subfamily Lamiinae > Tribe Pogonocherini > Genus Pogonocherus Diagnostic Features of Larvae Larva. Form cylindrical; integument very finely granulate, shining, sparsely clothed with fine, whitish-yellow hairs. Head rather thick, sides slightly constricted behind middle; clypeus finely granulate; labrum roundly rectangular, about one and one-half times as wide as long, sparsely ciliate in front; mandible not twice as long as basal width, finely granulate on outer face, cutting-edge obliquely truncate; antennal ring closed; one pair of distinct ocelli. Ventral mouth-parts rather thick; mentum little wider than long, distinct, sunken; maxillary palpi two-jointed, last joint longer than last labial; hypostoma slightly bulging transversely. Prothorax trapezoidal, thick, widest behind; pronotum posteriorly finely reticulated, shining, anteriorly very finely rugulose, regularly and finely haired; sternum hairy, shining; sternellum rather broad, smooth, shining; mesonotum and metanotum finely rugulose, reticulated, shining; mesosternum and metasternum smooth. Abdomen: Ampullae with a deep, broad, longitudinal median impression, wrinkled but not tuberculate; epipleurum protuberant on last segments, tubercle small, oval, abruptly projecting, no chitinous pits, one seta; ninth abdominal tergum bearing a large, oval, longitudinally carinate plate considerably smaller than labrum. Spiracles very small, orbicular, slightly chitinous rimmed. Pupa. Form as in adult; remarkable for not having a chitinous process or spine or body except an acute conical one on last abdominal tergum. Coarse hairs in two groups on mesonotum and metanotum. Adapted from Craighead (1923). Biology and Economic Importance This species feeds in various branches of Pinus and Picea throughout the eastern and central western United States and Canada. Adapted from Craighead (1923). Selected References to Larvae Specimens Craighead, 1923