Valid Names Results

Megacanthaspis Takagi, 1961 (Diaspididae)

Megacanthaspis Takagi 1960: 68. . nomen nudum (discovered by Takagi1961a: 97)
Megacanthaspis Takagi 1961a: 97. Type species: Megacanthaspis actinodaphnes Takagi by monotypy and original designation . accepted valid name
Nanmusaspis Tang 1977: 148. Type species: Nanmuaspis phoebia Tang by monotypy and original designation . junior synonym (discovered by Takagi1981: 4)
Nanmuapsis Tang 1977: 148;. . misspelling of genus name
Nanmuaspis Takagi 1981: 1;. . misspelling of genus name

Systematics: Subfamily DIASPIDINAE Tribe DIASPIDINI Subtribe CHIONASPIDINA (Normark, et al., 2019) Normark, et al., 2019 determined that Megacanthaspis is a monophyletic genus. This genus is so peculiar that any close affinities can not be suggested. It lacks sclerotized lobe-like processes on the pygidium in all the stages of the female and is provided with a series of small, membranous, apically fimbriated processes along the apical margin of the pygidium both in the adult female and in the second stage female. It is particularly characterized by having very prominent, conical, glanduliferous processes along the margin of the abdomen. In some respects this genus resembles Mercetaspis, from which it is distinct by the dorsal macroducts occurring along the pygidial margin which are not particularly enlarged, that is, the absence of megapores (Takagi, 1961a).
Structure: Adult female body elongate, membranous throughout; pygidium small, rounded apically. Antennae set apart, with a seta. Macroducts with the orifice elliptical and surrounded by a slender rim, tending to be arranged in segmental rows (Takagi, 1961a).
General Remarks: Detailed redescription and illustration by Takagi (1981).

Takagi1993: pp.23 ( Adult (F) ) [A tentative key to the genera of the subtribe Protodiaspidina]
Yang1982: pp.223 ( Adult (F) ) [Key to genera of Diaspidini]
Takagi1961a: pp.101 ( Adult (F) ) [Key to genera of Japanese Diaspidini]