''Paectes medialba'' is a

moth Moths are a paraphyletic group of insects that includes all members of the order Lepidoptera that are not butterflies, with moths making up the vast majority of the order. There are thought to be approximately 160,000 species of moth, many of w ...

in the family

Euteliidae Euteliidae is a family of moths in the superfamily Noctuoidea. The family was erected by Augustus Radcliffe Grote Augustus Radcliffe Grote (February 7, 1841 – September 12, 1903) was a British entomologist who described over 1,000 species ...

first described by Michael G. Pogue in 2013. It is found in north-western

Argentina Argentina (), officially the Argentine Republic ( es, link=no, República Argentina), is a country in the southern half of South America. Argentina covers an area of , making it the second-largest country in South America after Brazil, th ...

.Pogue, M. G. (2013)
"A review of the ''Paectes arcigera'' species complex (Guenée) (Lepidoptera, Euteliidae)"
''Zookeys''. 264: 126-163. The forewing length is 9.4 mm for males and 9.9 mm for females. The costal area of the forewings is dark gray mottled with white scales and faint white dashes along the costa from just beyond the middle to below the apex. There is a distinct ovate basal spot and a few dark gray and white scales basally, the remainder of the scales is tan. The hindwings are white, with dark gray marginal shading. The veins are highlighted with dark gray and the anal fold has a white and dark-gray striped pattern.

Etymology

The species name is derived from the combination of the Latin terms ''medius'' (meaning middle) and ''albus'' (meaning white) and refers to the white medial area of the male forewing.

References

Moths described in 2013 Euteliinae {{Euteliinae-stub