Hyalurga fenestra (Linnaeus, 1758)

Linnaeus, C. (1758). Systema naturae per regna tria naturae, secundum classes,
ordines, genera, species, cum characteribus, differentiis, synonymis, locis.
Editio decima, reformata. Tomus I. Holmiae: Laurentii Salvii, p. 505. Described
in the genus Phalaena (Phalaena Bombyx fenestra).

fenestra. 41. P. Bombyx spirilinguis, alis patulis concoloribus: superioribus &
inferioribus fenestratis. M. L. U. Habitat in Indiis.

Translated from the Latin original: fenestra. 41. Phalaena Bombyx with a spiral
tongue, the wings spread, of the same colour on both sides: fore and hind wings
windowed. Museum of Ludovica Ulrica. Lives in the Indies.

Hering, M. (1925). Hyalurga. In: Seitz, A. (ed.), The Macrolepidoptera of the
World, vol. 6, The American Bombyces and Sphinges: p. 448, pl. 65 a (German
edition: Die Gross-Schmetterlinge der Erde 6: 448).

H. fenestra L. (= fenestrigera Hbn., egeon Cr.) (65 a). Head and thorax black,
collar with 2, thorax with 6 white spots. Patagia ochreous-yellow, often edged
with blackish-brown. Abdomen above ochreous-yellow, the first and last segment
white, with a black dorsal line and black subdorsal lines, the lateral lines and
ventrum being white. Wings whitish hyaline, all the margins of the forewing
varying from ochreous to reddish yellow, on both sides narrowly or more broadly
edged with black; a similar transverse band extends across the transverse vein
to the tornus where it bends towards the base. Veins blackish-brown. Hindwing
with white veins and a black, more or less white-filled apex and distal margin.
The transverse band is rarely quite black: -- supposita form. nov. (♀ from
Ucayali in the Berlin Museum), so that the species then resembles sixola Schs.
(65 b), distinguished by the differently coloured abdomen and the broader band
of the hindwing. -- The form amazonica Btlr. has deeper reddish-yellow margins
which are more broadly edged with black, and the distal margin of the hindwing
only shows traces of the white filling. The form occurs with transitions among
the typical form. South America to South Brazil and Peru.