Symphyta

A Dictionary of Zoology | 1999 | Copyright

Symphyta (sawflies, woodwasps; subclass Pterygota, order Hymenoptera) The smaller suborder of the Hymenoptera, whose members are distinguished from the Apocrita by the lack of a constriction at the base of the abdomen. The ovipositor is large and used for piercing and sawing plant tissues. Adults have a fore wing with one–three marginal cells and a hind wing with three basal cells. In adult saw-flies, the trochanters are two-segmented. The larvae resemble the caterpillars of the Lepidoptera, but differ in having up to seven pairs of abdominal prolegs. The larvae are mostly herbivorous, except for members of the parasitic family Orussidae. Symphytans occur on flowers and in association with their host plants, some causing defoliation.

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Related entries from encyclopedias, dictionaries, and thesauruses

Symphyta
Book article from: A Dictionary of Zoology Symphyta ( sawflies , woodwasps ; subclass Pterygota , order Hymenoptera ) The smaller suborder of the Hymenoptera, whose members are distinguished...
Orussidae
Book article from: A Dictionary of Zoology ...Orussidae ( parasitic woodwasps ; suborder Symphyta , superfamily Siricoidea) Small and...hairy (a feature unique among the Symphyta). Little is known about the biology...an intermediate stage between the Symphyta and the Apocrita .
Evaniidae
Book article from: A Dictionary of Zoology Evaniidae ( ensign wasps ; suborder Symphyta , superfamily Evanioidea) Family of black symphytans, 3–15 mm long, which are somewhat spider-like in appearance...
Cimbicidae
Book article from: A Dictionary of Zoology Cimbicidae (suborder Symphyta , superfamily Tenthredinoidea ) Family of moderate- to large-sized (18–25 mm long) symphytans which resemble hairless...
Xyelidae
Book article from: A Dictionary of Zoology Xyelidae (suborder Symphyta ; super-family Xyeloidea) Uncommon, primitive, symphytan family, whose members are generally less than 5 mm long. Adults...

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