Valid Names Results
(Young) 1986 (Diaspididae
Type species: Yunnanaspis rubus Young
by monotypy and original designation
accepted valid name
- General Remarks: The armored scale genus Yunnanaspis Young, 1986 was established for a genus with the type species Yunnanaspis rubus Young, 1986 by original designation from Jing-dong, Yunnan, China in the family Diaspididae. Nevertheless the name Yunnanaspis is already occupied. Zhang (1966) described a trilobite genus Yunnanaspis with the type species Yunnanaspis bilongispinus Zhang, 1966 from Tsanglangpu Fm, Yunnan, China in Trilobita. Thus the genus Yunnanaspis Young, 1986 is a junior homonym of Yunnanaspis Zhang, 1966. So Özdikmen (2011) suggested that Yunnanaspis Young, 1986 should be replaced with Youngus as a replacement name.
- Systematics: Yunnanaspis is near Epidiaspis, but differs in the arrangement of dorsal macroducts and gland spines on the pygidium. Its dorsal macroducts arranged in submarginal and submedian rows, not mingled with small macroducts on the pygidium. The gland spines are restricted to pygidial margins and much more in number on the 4th and 5th abdominal segments (Young, 1986).
- Structure: Adult female oval, with 3 pairs pygidial lobes. Median lobes contiguous at their bases, without marginal setae or gland spines between, without basal zygotic sclerosis. 2nd lobes and 3rd lobes unilobulate, each with a capitate sclerosis at their sides; a similar capitate sclerosis beyond the 3rd lobes at the position of the supposed 4th lobes (Young, 1986).
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