 |
Sarosesthes fulminans
Classification
Diagnostic Features of Larvae
- Larva. Form less robust than that of Calloides nobilis; integument thin, shining, hairs on abdomen fine, of a dark lemon color. Head in general as in Calloides, mouth-frame less chitinized, light reddish brown; labrum transversely oval, widest behind, covered with long silky hairs, except for glabrous spot in center, process of palpifer distinct; process on first joint of maxillary palpi distinct, last joint of maxillary palpi shorter than second, and shorter than last labial. Prothorax having hairs of proalar and lateral regions shorter, denser, and finer than in Calloides, light castaneous; pronotum posteriorly shining with a few elongate punctures to short fovea. Spine of legs not strongly chitinized. Abdomen: Ampullae dull, finely alutaceous. Spiracles narrowly oval, dark lemon colored, peritreme thin. Pupa: Pronotum regularly beset with slender, straight, acute points, longer on sides and less numerous on disc; metanotum bearing two oblique rows of short bristles; each abdominal tergum armed with two transverse rows of slender acute spines projecting backward, except those on hind border of the seventh and eighth segments, which are longer and recurved. Adapted from Craighead (1923).
Biology and Economic Importance
- The larva bores beneath the bark, deeply scoring the wood until half grown, when the sapwood is entered from 4 to 6 inches. Not so much frass is extruded as by the species of Megacyllene. The most striking feature of the work is the pupal cell, constructed at the end of the prepupal gallery, which is suddenly turned at an angle of from 40 to 45 degrees, cutting across the grain of the wood. Adapted from Craighead (1923).
Selected References to Larvae Specimens
| |
