Trionymus okiensis sp. nov., a new species of mealybug from Japan (Hemiptera: Coccomorpha: Pseudococcidae)
Tanaka Hirotaka
Acta Entomologica Musei Nationalis Pragae 58(1): 31-34, 2018
Published online: 22nd April 2018
Published in print: 15th August 2018
Views: 1323
Abstract: A new species of mealybug (Hemiptera: Sternorrhyncha: Coccomorpha:
Pseudococcidae), Trionymus okiensis sp. nov., is described based on adult
females collected in Dougo Island, Shimane Prefecture, Japan, on Japanese silver
grass, Miscanthus sinensis (Poaceae). The new species resembles Trionymus
frontalis McKenzie, 1967 and Dysmicoccus boninsis (Kuwana, 1909), but differs
from both those species in having 4 to 6 cerarii, relatively deep oral-collar
tubular ducts of two different sizes on dorsum, a number of multilocular pores
on the dorsum and more than 10 auxiliary setae on each anal lobe cerarius.
A key to two species of Trionymus Berg, 1899 currently known from Japan is
provided.
Key words: Hemiptera, Sternorrhyncha, Coccoidea, scale insects, Japanese silver grass, morphology, taxonomy, description, Oki Islands, Palaearctic Region
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