Prionus emarginatus Classification Family Cerambycidae > Subfamily Prioninae > Tribe Prionini > Genus Prionus Diagnostic Features of Larvae Larva. Form cylindrical, slightly tapering posteriorly; integument very finely granulate, shining, sparsely clothed with lemon-yellow hairs. Head subrectangular, slightly constricted on sides behind gena and somewhat produced at base behind attachment of dorsal retractor muscles; epistoma projecting over clypeus in four prominent, flat, obtuse tubercles, the two median approximate; front scarcely projecting in a dull rounded transverse carina. Labrum transverse, subtrapezoidal, sparsely haired; mandibles robust, strongly curved on outer face (when seen from above), basal portion brownish, shining apical dull black, cutting edge straight, very little obliquely inclined, dorsal angle not strongly toothed; antennae three-jointed, first joint shortest, transverse, second globular, bearing the minute third. Ventral mouth-parts rather soft, fleshy, maxillary palpi conical, two basal joints transverse, last slightly larger, cylindrical, and bluntly round, about equal to last labial. Post condylar carina faint; subfossal spine acutely conical. Prothorax quadrangular. Anterior area of pronotum with transverse band of short hairs, posterior rugulose. Eusternum completely separated from presternum. Legs short, hairy, tarsus a slender spine. Abdominal ampullae rather prominently projecting. Pleural disc radially striate, distinct on first six abdominal segments. Spiracles rather small, oval, peritreme slightly chitinized. Pupa: Absolutely unarmed and pupates in an earthen cell. Egg: Elongate ovoid, 5 by 1-5 mm, largest beyond middle opposite micropyle, from which it gradually tapers to apex; texture firm, tough, strongly or finely pitted or honeycombed. Adapted from Craighead (1923). Biology and Economic Importance Biology and economic importance for this taxon coming soon. Selected References to Larvae Specimens Craighead, 1923