From the scholia to Aristophanes, Frogs 932; offered there as a variant reading of i(ppalektruw/n ("horse-rooster, gryphon", i.e. a monster). A noun koloktruw/n is also noted in Herodian (De Prosodia Catholica p. 22 Lentz, On The Declension of Nouns p. 724) and glossed by Hesychius kappa3367: "born from a maimed large rooster". All this is wasted ingenuity, however, because in Aristophanes the phrase to\n cou=qon i(ppalektruo/na (quoting Aeschylus fr. 134) is secure; cf. delta 1054, xi 81.
For locusts see alpha 4336.