Octaspidiotus MacGillivray, 1921

Wei, Jiufeng & Zhao, Qing, 2016, A new species of Octaspidiotus (Hemiptera, Diaspididae) from China, ZooKeys 605, pp. 83-89 : 84-85

Taxon classification Animalia Hemiptera Diaspididae

Genus Octaspidiotus MacGillivray, 1921

Metaspidiotus Takagi, 1957: 35. Junior synonym.

Type species.

Aspidiotus subrubescens Maskel, 1892.

Generic diagnosis.

Adult female. Body is oval to rounded; derm membranous except pygidium. Cephalothorax. Antennae with 1 seta. No trilocular pores associated to the spiracles. Pygidium. With 3-4 pairs of lobes, never bilobed. Median lobes (L1) well-developed, with notches on both margins or only present on the outer margin. Second lobes (L2) smaller than L1, with notches on both laterals or only present on the outer lateral. Third lobes (L3) similar to L2. Fourth lobes (L4) small and pointed apically, only present in Octaspidiotus subrubescens . Marginal setae occurring on dorsal bases of L2 and L3, lanceolate, broadened and flattened. Plates are well-developed, fimbriate on the outer margin in most species, occurring laterally and even extended to the abdominal segment IV. Paraphyses absent on pygidial margin. Ducts. Dorsum has one-barred type macroducts, that are aligned in some species. Ventral microducts are scattered. Anal opening is toward the apex of the pygidium, more or less elongate. Vulvar opening situated anterior to anal opening. Perivulvar pores are quinquelocular, present or absent, if present, in four groups.

Remarks.

This genus is very close to Aspidiotus Bouché, 1833 and Oceanaspidiotus Takagi, 1984 in terms of pygidial lobes and pygidium, but can be distinguished by the form of the dorsal marginal setae occurring on L1 and L2 which are lanceolate, broadened and flattened, while these setae in the other two genera are simply thickened.