 |
Saperda candida
Classification
Diagnostic Features of Larvae
- Larva. Large, robust; integument very finely wrinkled, shining sparsely clothed with coarse, light, castaneous hairs; labrum coriaceous, semicircular, about twice as wide as long, covered with short stiff hairs; pronotum strongly chitinized, asperities coarse, extending over three-fourths of length; eusternum coarsely haired, asperities in a lenticular group, not quite reaching lateral limits; sternellum strongly asperate for its entire width; ampullae rather coarsely asperate; pleural tubercles oval, bearing two strong setae and usually two finer ones; spiracles very large, broadly oval to nearly orbicular. Pupa. Form as in adult; immediately recognized by presence of a few small chitinous points on head, those on body strong; setae coarse, irregularly disposed on pronotum, a group on scutellum of mesonotum and in a V-shaped group on metanotum; a dense transverse row across abdominal terga. Adapted from Craighead (1923).
Biology and Economic Importance
- The habits of this species have been much discussed in literature as injurious to fruit trees, apple (Malus), peach (Amygdalus), etc. The author has found it in a dense wood in the mountains of Pennsylvania, feeding in the base of living Crataegus. The mines are extended under the bark, and later a straight gallery from 4 to 6 inches long is extended up through the sapwood before pupation. Adapted from Craighead (1923).
Selected References to Larvae Specimens
| |
