σέρφος

A. gnat or winged ant, Ar. V. 352 (ubi v. Sch.), Av. 82, 569, Nicopho 1, dub. in Phld. Mort. 34: prov., ἔνεστι κἀν μύρμηκι κἀν σέρφῳ χολή 'even the gnat has its sting', Sch.Ar. Av. 82, V. 352, cf. AP 10.49 (Pall.):—written συρφός in Hsch.
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
An open-access project