Foldi, I. 1999 Diversité morphologique chez les cochenilles mâles des Margarodidae: l'exemple de Neomargarodes erythrocephala Green and Stigmacoccus asper Hempel (Hemiptera: Coccoidea).. Annales de la Société Entomologique de France 35(3/4): 319-327.

Notes: Title in English: [Morphological diversity in the margarodid male scale insects: the examples of Neomargarodes erythrocephala Green and Stigmacoccus asper Hempel (Hemiptera: Coccoidea: Margarodidae).] Descriptions and illustrations of males of these two species. Both males have antennae unique in structure for scale insects: those of N. erythrocephala are branched while those of S. asper are pectinate. Other characters are: N. erythrocephala has broad wings with large alar setae, a strongly serrate distal half of the costal margin and the tibia, tarsus and claw of the prothoracic legs fused; and S. asper has composite wax glands. Both species possess an eversible endosome bearing a large number of spines or setae on their external surface as numerous margarodids. Morphological comparison shows that these structures and their positions on the endosome vary from one species to another and thus have a diagnostic value.