Transcription factor with a minor role promoting glial cell differentiation and a more significant role in hematocyte differentiation. Gcm2, together with gcm, is required for the proliferation of plasmatocyte precursors, the expression of Croquemort protein, and the ability of plasmatocytes to convert into macrophages. Expressed in glial lineages within embryonic procephalic mesoderm. Expression is highest in hemocyte primordia and longitudinal and nerve root ganglia. First appears in embryos, levels decrease in larvae and peak again in 1 day old pupae. No expression is found in adults. Intron retention.