Valid Names Results

Bayuraspis javanensis (Williams, 1963) (Diaspididae: Bayuraspis)

Nomenclatural History

• Metandaspis javanensis Williams 1963b: 30-31. Type data: INDONESIA: Java, on Pterospermum javanicum, by A. Zimmerman. Holotype, female, Type depository: London: The Natural History Museum, England, UK; accepted valid name Notes: 8 paratypes in BMNH. Illustr.
• Bayuraspis javanensis (Williams, 1963); Takagi 2003: 98-99c. change of combination

Common Names

Ecological Associates

Hosts:

Families: 1 | Genera: 1

Geographic Distribution

Keys

Remarks

• Systematics: Williams (1963b) states "there is some doubt as to whether this species belongs to the same genus as [M. recurvata]. The very prominent median lobes are the chief distinguishing characters together with the peculiar paraphyses on the ventral surface and the large basal scleroses. Rather than erect a new genus it may remain here until further related species are discovered." In 2003, Takagi described the new genus with Bayuraspis javanensis (=Metandaspis javanensis Williams) as the type species, stating that the notable differences between Metandaspis and Bayuraspis included the statement that the median trulla is symmetrical, with the inner and outer margins equal in length, teh second trullae are broad and unilobed, and the dorsal intersegmental furrow between abd V and VI is well marked throughout, attaining the marginal notch between the segments. He stated that Bayuraspis javanensis is similar to "Hexandaspis bataanensis in having prominent median trullae and broad second trullae, but that they differ in the symmetrical shape of each median trulla, the complete absence of the third trullae, the absence of megaducts, the presence of scattered dorsal ducts on the pygidium, and the complete demarcation of abd V from abd VI on the dorsal surface. (Takagi, 2003)
• Structure: Female scale white, smooth, elongate, about 1.5 mm long, but usually covered with reddish-brown matter. Male scale similar but smaller. Adult female elongate, sides subparallel, body membranous except for pygidium but older individuals often sclerotized on head margin and in a characteristic pattern on the prepygidial abdominal segments (Williams, 1963b).
• Biology: Females occurring on the lower surface of the leaves burrowing under the tomentum. (Takagi, 2003)
• General Remarks: Detailed description and illustration by Williams (1963b).

Illustrations

Citations