Szekessy Vilmos (szerk.): A Magyar Természettudományi Múzeum évkönyve 59. (Budapest 1967)

Vojnits, A.: The distribution and forms of the Gnophos-group (Lepidoptera, Geometridae) in Hungary. I.

Odontognophos dumetata dumetata TR. There are three 0. dumetata specimens in the TREITSCHKE Collection: 1 male and 2 females. There are no type labels on them. For an exact definition of the systematical position of the populations constituting the Formenkreis of O. dumetata TR., the designation of the lectotype of Odontognophos dumetata dumetata TR. is indispensable. The lectotype hereby designated is the male specimen of the original series (Plate, fig. 1). It is labelled as follows: "TREITS. 2597". A short characterization of the lectotype is as follows : Dimensions and shape. Length of costa of fore wing: 20.5 mm, termen: 13.5 mm, dorsum: 15 mm. Longest ray of hind wing: 16.6 mm. Outer margins of both fore and hind wings arcuately sinuous. Colour and pattern. Light chocolate-brown colour of upper side of wings slightly tending to yellow. Outer marginal area darker brown, wider on fore wings and with hardly any transition into basic colour, hence rather distinct. Dark colour of marginal area of hind wing gradually changing into basic colour. At inner third of dark brown marginal area, an indistinct submarginal stripe, decurrent parallel with termen, hence sinuous, and more expressed on fore wings. Apex concolorous with basic colour. Median field of fore wing delimited by two blackish brown striae broken into dots and spots. A third stripe bisecting median field by approximately halving distance between antemedian and postmedian stripes. All three connecting costa and dorsum ; strongest line postmediana, well discernible also on hind wing, within it only indistinct spots towards base. On both fore and hind wings postmediana covered by a strong stripe, a "shadow", approaching but not reaching costa of fore wing. Discal spots hardly discernible on fore wing, well visible on hind wings. Head and thorax concolorous with basic colour of wings, abdomen slightly greyish. Underside of wings greyish yellow, with a yellowish sheen. Basic colour irrorated with minute, brown dots. Irroration a slightly darker narrow zone along termen, blending hardly discernibly into basic colour. Postmediana well visible on fore wing, but merely as a suffusion on hind wing. Discal spots distinct on both fore and hind wings. The two female specimens are hereby designated as Paralectotypes. Both bear the label "TREITS. 2597". The females are slightly bigger than the male. They display no essential difference as to colour and pattern (Plate, fig. 2). The lectotype and the two paralectotypes are deposited in the TREITSCHKE Collection in the Zoological Department of the Hungarian Natural History Museum. Hungarian populations Having examined about 120 home specimens, I found only one on which the dark shadow had disappeared. This specimen is, however, an individual aberration. All other exemplars show this shadow, rather strongly developed in most of them. The basic colour is generally darker than that of the TREITSCHKE specimens. The circumstance, however, that these originate without exception from recent collectings and that even those captured in the 'thirties do not differ at all from the nominate form, implies that the deviation mentioned above is nothing more than the fading of the original colour evolved in more than 140 years (Plate, figs. 3,4). With due respect to these considerations, I have concluded that our home