Valid Names Results

Youngus Özdikmen, 2011 (Diaspididae)

Yunnanaspis Young 1986: 203. Type species: Yunnanaspis rubus Young by monotypy and original designation . junior homonym (discovered by Ozdikm2011: 476) Notes: Homonym of Yunnanaspis Zhang, 1966
Youngus Özdikmen 2011: 476. . replacement name

Systematics: Subfamily DIASPIDINAE Tribe LEPIDOSAPHIDINI (Normark, et al., 2019) 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).
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.