Valid Names Results

Pseudaulacaspis biformis Takagi, 1956 (Diaspididae: Pseudaulacaspis)

Pseudaulacaspis biformis Takagi 1956: 113-116. Type data: JAPAN: Hokkaido, Sapporo, on Cercidiphyllum japonicum, 17/05/1954, by S. Takagi. Holotype, female, Type depository: Sapporo: Entomological Institute, Faculty of Agriculture, Hokkaido University, Japan; accepted valid name Illustr.

Families: 8 | Genera: 9

Countries: 1

Systematics: Pseudaulacaspis biformis is close to P. pentagona, from which it may be distinguished by the arrangement of the dorsal macroducts. The presence of 2 different types (triangular and semicircular) of the median lobes may be one of the remarkable features of this species. Both types are always found even in a single colony (Takagi, 1956).
Structure: Female scale subcircular, white, convex at dorsal aspect; ventral scale thin, remaining on host plant. 2nd exuviae brown, marginal or submarginal. 1st exuviae pale yellow, translucent, sometimes projecting beyond margin of scale, 2.0 mm at maximum. Adult female body broadly ovate, broadest in thoracic region, about 1.5 mm long, 1.0 mm wide. Median lobes prominent, strongly zygotic basally; two types of median lobes present (Takagi, 1956).
General Remarks: Detailed description and illustration by Takagi (1956).