Laudator Temporis Acti

K.J. Dover (1920-2010), Greek Popular Morality in the Time of Plato and Aristotle (Oxford: Basil Blackwell, 1974; rpt. Indianapolis: Hackett Publishing Company, Inc., 1994), p. 32:

The ingredients of these diatribes can be shown to be the common property of comedy and oratory.

(i) One or both of the opponent's parents are of foreign and/or servile birth, and he has improperly become an Athenian citizen.

So Aiskhines alleges (ii 78) that Demosthenes is 'descended on his mother's side from the nomad Scythians' or (iii 172) that he is 'on his mother's side a Greek-speaking Scythian barbarian' (ii 180). So does Deinarkhos i 14; cf. Lys. xxx 2 on Nikomakhos. Compare Kleon as a 'Paphlagonian' in Aristophanes' Knights, Kleophon as a 'Thracian' (Frogs 678ff., cf. Plato Comicus fr. 60), Hyperbolos as a 'Phrygian' (Polyzelos 5) or 'Lydian' (Plato Comicus fr. 170), and similar accusations of foreign birth against Lykon (Pherekrates fr. 11, Eupolis fr. 53), Arkhedemos (Eupolis fr. 71), Khaireas (Eupolis fr. 80) and Dieitrephes (Plato Comicus fr. 31); this list is only selective.

To the list add Akestor, nicknamed Sakas, from Aristophanes, Birds 30-35 (tr. Jeffrey Henderson):

You see, gentlemen of the audience, we're sick with the opposite of Sacas' sickness: he's a non-citizen trying to force his way in, while we, being of good standing in tribe and clan, solid citizens, with no one trying to shoo us away, have up and left our country with both feet flying.

ἡμεῖς γάρ, ὦνδρες οἱ παρόντες ἐν λόγῳ,
νόσον νοσοῦμεν τὴν ἐναντίαν Σάκᾳ·
ὁ μὲν γὰρ ὢν οὐκ ἀστὸς εἰσβιάζεται,
ἡμεῖς δὲ φυλῇ καὶ γένει τιμώμενοι,
ἀστοὶ μετ᾿ ἀστῶν, οὐ σοβοῦντος οὐδενὸς
ἀνεπτόμεθ᾿ ἐκ τῆς πατρίδος ἀμφοῖν τοῖν ποδοῖν.

Nan Dunbar on line 31 (student edition, pp. 116-117): D. Holwerda, ed., Scholia Vetera et Recentiora in Aristophanis Aves (Groningen: Egbert Forsten, 1991), p. 12: