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Anelaphus villosus
Classification
Diagnostic Features of Larvae
- Larva. Immediately recognizable by the very long, lemon-yellow hairs, especially on prothorax. these being as long as the pronotum; short subulate hairs on epipleurum and alar area of prothorax absent. Head broadly oval in cross section; epistoma very shallowly emarginate, bearing a number of long hairs; labrum orbicular, hairs on middle longer than labrum itself; genal shoulder enclosing ocelli less abruptly. Posterior area of pronotum simply, irregularly, coarsely striate; ampullae sub-tuberculate; spiracles broadly oval to orbicular, peritreme indistinct. Adapted from Craighead (1923).
Biology and Economic Importance
- The larva attacks the smaller branches of a great variety of hardwood trees. It burrows down the center of the stem until nearly mature, when it cuts off the branches from the inside, leaving a thin shell of bark, which later breaks. Rarely are holes made along the mines to exude frass. Pupation occurs between two plugs of frass, in the late fall or early spring. The life cycle is completed in one year. This species often becomes of economic importance and is abundantly cited in literature. It is sometimes reared from branches which are dead and in this case does not girdle them. This may be a different species, as some of the larvae show variations from the form described. Adapted from Craighead (1923).
Selected References to Larvae Specimens
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