Table 1. Insect hemocyte terminology.
Function | Drosophila melanogaster (and related ‘oriental’ subgroup species) | Other drosophilids | Mosquitoes | Lepidopterans(similar terminology in other insect orders) |
---|---|---|---|---|
Phagocytes | Plasmatocytes | Plasmatocytes | Granulocytes/ granular cells | Granulocytes/ granular cells |
Melanization | Crystal cells | Oenocytoids (commonly called ‘crystal cells,’ but they lack crystals) |
Oencytoids | Oencytoids |
Encapsulation | Lamellocytes | Other encapsulating cell types: Nematocytes Multinucleated giant hemocytes Pseudopodocytes Activated plasmatocytes |
— | Plasmatocytes (not homologous to Drosophila plasmatocytes – uncertain homology to Drosophila lamellocytes, as discussed in the text) |
? | Primocytes (novel class) | ? | ? | ? |
Cuticle formation? | — | — | — | Spherule cells |
Hemocyte precursors | Prohemocytes (In lymph gland; few, if any, in circulation) |
? | Prohemocytes | Prohemocytes (in hematopoietic organ only?) |