Question for Illustration about Peloponnesian War

[hoplite14gr]

Most references talk about Hellenistic troops but the chances are tha the West Greek colonists (Italiotes and Massalians) who employed non Greek light troops (Celts, Spanish, Mamertines) would be the first to adopt oblong shields arround the early 4th century. The fashion start spreading eastwards with mercenaries that reached first Alexander´s Army in my opinion.
Kind regards

P.S. Cypriot Thyreoforos 300 B.C:
http://pg.photos.yahoo.com/ph/hoplite14 ... d22re2.jpg