New subspecies of Colias tyche (Boeber, 1812) (Lepidoptera, Papilionoidea: Pieridae) from Taimyr Peninsula (Northern Siberia)

The article describes a new subspecies, Colias tyche antonkozlovi Yakovlev ssp. n. (Lepidoptera, Papilionoidea: Pieridae) from Taimyr Peninsula. We provide a detailed illustrated description and distinctive features of the new subspecies from other Palaearctic subspecies of C. tyche .


Material and methods
The specimens (11 males, 4 females) were collected on Putorana Plateau in July 2010. The holotype was given to the collection of ZISP, two paratypes are deposited in the collection of the author, the other paratypes are in the collection of Anton Kozlov (Moscow). The images were taken with camera iPhone 7 and processed in Corel Draw.

Description of new taxa
Colias tyche antonkozlovi Yakovlev, ssp. n. Description. Male. Length of fore wing 20−24 mm (holotype -22 mm). Antenna pink, apically yellow. Wings pale green from above, fringe pink. Slight sputtering of grey scales on costal edge of fore wing, poorly developed marginal grey band with pale green strokes along veins, submarginal series of pale green round spots, discal poorly developed grey band, slight sputtering of grey scales in discal and wing root area, well expressed grey discal spot. Hind wing with series of boundary grey triangle spots at veins (in some specimens, the spots developed only at veins Sc+R1, Rs and M1−3), slight sputtering of black scales at wing root. Fore wing pale green from below, apically with slight ochre sputtering, slight grey scales sputtering throughout wing, discal spot small, silver-white, framed in thin grey rim. Hind wing olive-green from below, with light submarginal band, discal spot silver-white, framed in thin pink rim.

Material
Female. Length of fore wing 24−25 mm. Antenna pink, apically yellow. Fringe on wings pink. Fore wing light-yellow from above, wide grey submarginal band with light-yellow wide spots along veins, grey sputtering on costal edge, discal spot black, sputtering of grey scales in root area. Hind wing grey, wide light-green submarginal band, series of boundary grey triangle spots at veins Sc+R 1 , Rs and M 1−3 , discal spot yellow. Fore wing light-green from below, with slight sputtering of light-grey scales throughout wing, apically poorly expressed ochre sputtering, discal spot small, silver-white, framed in thin grey rim. Hind wing olive-green from below, with a lighter submarginal zone and dense sputtering of grey scales throughout wing, discal spot silver-white, framed in thin pink rim.
Diagnosis. The new subspecies has the following characters distinctive from the other known Palaearctic subspecies: -the nominative subspecies is bigger (the fore wing length of males is 24−27 mm, of females − 25−29 mm); in both sexes the dark submarginal bands are much more expressed; the hind wing of males is more green and unicolorous from below; the discal spot on the bottom surface of the hind wing in most specimens is not framed with a pink rim; -C. t. kolosovae is smaller ( the fore wing length of males is 18−22 mm, of females 22.5−24 mm) ; the fore wing of males has an expressed grey sputtering; -in C. t. werdandi, males and females are lighter coloured; -C. t. zemblica is smaller (the fore wing length of males -18 mm); the male is lighter coloured, with a contrast black pattern from above.

Etymology.
The new subspecies is named after Anton O. Kozlov (Moscow), who provided the specimens for examination.