Galactose-specific lectin that displays calcium-dependent activity (PubMed:16475980, PubMed:17287021). Binds to the surface of hemocytes and enhances hemocyte encapsulation and melanization (PubMed:17287021). This is likely by interacting with carbohydrates on the surface of the hemocytes (PubMed:17287021). Also displays agglutination activity against the Gram-negative bacterium E.coli (PubMed:17287021). Detected in larvae and expressed from the late pupal stage onwards. Highest levels of expression in adults.