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Pachynematus extensicornis

Source : Webster's Revised Unabridged Dictionary (1913)

Wheat sawfly \Wheat sawfly\
   (a) A small European sawfly ({Cephus pygm[ae]us}) whose larva
       does great injury to wheat by boring in the stalks.
   (b) Any of several small American sawflies of the genus
       {Dolerus}, as {D. sericeus} and {D. arvensis}, whose
       larv[ae] injure the stems or heads of wheat.
   (c) {Pachynematus extensicornis}, whose larv[ae] feed chiefly
       on the blades of wheat; -- called also {grass sawfly}.
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