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Clytus ruricola
Classification
Diagnostic Features of Larvae
- Larva. Form semi-robust, cylindrical, contracted; integument rather firm, shining, sparsely covered with short light yellow hairs. Head subtrapezoidal; mouth-frame corneous; labrum thick, transversely broadly oval, having a very few short hairs; mandibles robust, broader at apex than other Clytini, shining basal piece about one-third length of apical; first joint of antennae globular, one-half length of second, equal to last; one distinct ocellus contiguous with base of antennae; process of palpifer minute; joint of maxillary palpi equal in length, last equal to last labial; gena neither shouldered nor setose. Prothorax stout, trapezoidal, sparsely hairy, the hairs short, castaneous; pronotum anteriorly regularly and sparsely haired, posteriorly alutaceous, shining to dull, granulate on hind margin, median suture deeply impressed; sternal glabrous spots smooth, shining or reticulate. Mesonotum and metanotum dull granulate; legs minute chitinous spines. Abdomen: Ampullae dull, granulate, not surrounded by velvety pubescence. Pleural discs indistinct. Spiracles broadly oval, peritreme rather thick. Pupa: Pronotum regularly beset with acuminate points resembling short stiff hairs, except on center; abdominal terga bearing acuminate points, those on the first six segments projecting posteriorly, on the seventh segment four much larger and recurved; two similar ones on eighth. Adapted from Craighead (1923).
Biology and Economic Importance
- Members of this tribe are known from various host plant families and several genera (e.g., Chlorophorus, Xylotrechus) are considered economically important. Species of this tribe are potentially invasive outside their native range. More information is available at the CAPS website.
Selected References to Larvae Specimens
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