title: Male germ line, spermatogenesis and karyotypes of Heteropeza pygmaea Winnertz. (Diptera: Cecidomyiidae).
mesh_terms: D000818:Animals; D002454:Cell Differentiation; D002875:Chromosomes; D004175:Diptera / Q000166:cytology / Q000196:embryology* / Q000254:growth & development; D007621:Karyotyping; D007814:Larva / Q000254:growth & development; D008297:Male; D008540:Meiosis; D011679:Pupa; D013094:Spermatozoa / Q000254:growth & development*