Ancylosis deserticola ( Staudinger, 1870 )

Bidzilya, Oleksiy, Budashkin, Yuriy & Yepishin, Viktor, 2019, A review of the genus Ancylosis Zeller, 1839 (Lepidoptera: Pyralidae: Phycitinae) from Ukraine, Zootaxa 4657 (3), pp. 437-473 : 452-453

Ancylosis deserticola ( Staudinger, 1870)

( Figs 18, 19 , 51–53, 72, 73)

Myelois deserticola Staudinger, 1870 —Berl. Ent. Z. 14: 201. TL: Volgograd [Sarepta], Russia.

Material examined. Ukraine: 2♀, Kyiv reg., Trostjanetzkoje lesnitshestvo (prope statio Bortnitshi ), at light, 5, 6.viii.1929 (I. Zhicharev). Genitalia slide: V. Yepishin prep. no. 076.18, O. Bidzilya prep. no. 274/18 . 2♂, Kherson reg., 10 km NE Radensk, Oleshky Sands , at light, 6.vi.2015 (O. Bidzilya). Genitalia slide: V. Yepishin prep. no. 077.18, O. Bidzilya prep. no. 272/18 (all ZMKU) . Russia: Lectotype of deserticola (here designated) : ♂ “ Myelois , deserticola , det. W. Mey, 2016” | “Sarepta, Ch.” | “Origin.” | “ U. Roesler, ♂, GU: 4227” ( MfN) . Paralectotypes: 1♂, 1♀, Sarepta. O. Bidzilya prep. no 139/ 19 ♀, 43 19♂ ( MfN) .

Comparative material studied. Ancylosis leucocephala : Holotypus: ♂, [NW Kazakhstan] “ Narün , Henke ” | “40” | “OTTO” | “niveicaput, Stgr.” | “Origin.” | “pl. IX fig. 9.” | “ leucocephala Stgr., Stett. e. Z., 1880, p 52.” | “ U. Roesler, ♂, GU: 4234” ( MfN) . Uzbekistan: 1♀, Margilan. Genitalia slide: O. Bidzilya prep. no. 46/19 ( MfN) . 3♂, Zhamansai , 140 km NW Shafrican, 19.iv, 9,10. v.1969 ; 1♀, Ajakguzhumdy , 40 km O Dzhingildy, 15.vii.1969 (Falkovitsh) ( SMNK) .

Ancylosis pallida : Lectotype (designated by Korb (2017: 523, fig. 14)) ♂ [ Russia] “ Origin ” | “ Sarepta, ch.”. O. Bidzilya prep. no. 69/19 ( MfN) . Paralectotype: ♀, same data as for the holotype. O. Bidzilya prep. no. 67/19 ( MfN) .

Diagnosis. Ancylosis deserticola is a comparatively small (14.0–16.5 mm) narrow-winged uniform light brown species with white costal margin. Ancylosis leucocephala has broader white costal pattern especially in distal ⅓, white, transparent rather than light grey hindwing with more contrasting brown margins and white rather than light brown head ( Figs 20, 21 ). Ancylosis pallida is larger (20–22 mm), white pattern along costal margin is very narrow. The male genitalia of A. deserticola are characterized by the narrow valva with distinct subcostal hump on ¼ length under the costa ( Figs 51–53 ). Ancylosis leucocephala is very similar in respect of the male genitalia, but differs in the narrower valva, more straight aedeagus and broader gnathos ( Figs 54, 55 ). The male genitalia of A. pallida are extremely similar to those of A. deserticola too, but they are considerably larger and the vinculum is broader ( Fig. 56 ). Ancylosis pallida can additionally be separated both from A. deserticola and A. leucocephala in weakly invaginated anterior margin of culcita. The band-shaped anterior margion of tergum VIII, the narrow elongated corpus bursae and signa with large basal plate are characterized for the female genitalia of A. deserticola ( Figs 72, 73 ). Ancylosis leucocephala differs in the narrower anterior margin of tergum VIII, basally rounded corpus bursae and less number of signa ( Fig. 74 ). Ancylosis pallida has an overall larger female genitalia with the broader corpus bursae and a larger number of signa ( Fig. 75 ).

Biology. Host plant is unknown. In Ukraine the species was registered from two very isolated localities: The vicinity of Kiev (Northern Ukraine) and the Lower Dnipro sands (Kherson region, Southern Ukraine) ( Fig. 77 ). We suppose that A. deserticola prefers sandy soils that are characteristic for both collection sites of this species in Ukraine. Adults were attracted to light in early Juny and early August.

Distribution. Ancylsois deserticola is broadly distributed from North Africa to Middle East and Central Asia to Tuva and South of Krasnojarskiy krai in Russia ( Roesler 1973; Sinev 2008). In Europe it is known from Spain, Bulgaria, Romania, Hungary, Middle and Lower Volga, Southern Ural of Russia and West Kazakhstan (Uralsk) ( Speidel 1996; Sinev 2008). In Ukraine the species is known from Kyiv ( Bidzilya et al. 2011: 70, pl. 5, fig. 4) and Kherson regions.

Remarks. Myelois deserticola was described based on six specimens of both sexes from Sarepta. Four specimens from type series are kept in MfN. The specimen illustrated by Korb as “ holotype ” (2017: 518, fig. 4) is designated here as a lectotype. The specimens from Ukraine match both externally and in the genitalia to the type specimens of A. deserticola . However, the female genitalia of Ukrainian specimen and female syntype from Sarepta differ from those illustrated by Roesler (1973: Pl. 147, fig. 228) from Kurgan-Tjube ( Uzbekistan). The latter has sub-ovate corpus bursae with large number of small signa and gradual transition to the ductus bursae. We are not able to assign this specimen to any species of Ancylosis known to us. The female genitalia of A. deserticola are described below for the first time.

Female genitalia of A. deserticola ( Figs 72, 73 ). Papillae anales subtriangular, densely covered with long hairs; both apophyses straight, twice as long as the length of papilla analis and segment VIII; segment VIII as broad as long, tergum VIII evenly sclerotized, anterior margin weakly projected anteriorely, band-shaped, sternum VIII with broad posteromedial emargination, ductus bursae slender, weakly s-curved, antrum short, funnel-shaped, separated from the ductus bursae by transverse fold, ductus seminalis narrow, arises from the posterior portion of the ductus bursae before antrum; corpus bursae approximately as long as the length of papilla analis plus segment VIII and ductus bursae, narrow, elongated, weakly broadened anteriorely, signa short, thorn shaped with large rounded basal plate.

Notes on related species. Ancylosis pallida was described based on two males and one female from Sarepta. The lectotype was designated by Korb (2017: 523, fig. 14). The female without geographical label mentioned as “typus” in Roesler (1973: 412) and later illustrated as a holotype by Trofimova (2017: 623, pl. 41, fig. 17) should be considered as a paralectotype. The specimens illustrated by Roesler (1973: Pl. 21, fig.175) from Uralsk and Paghman ( Afghanistan) look similar to A. albicosta and most likely should be assigned to that species rather than to A. pallida . The male genitalia of A. pallida from Kaschghar ( Roesler 1973, pl. 70, fig. 175) are not conspecific with those of the lectotype ( Fig. 56 ) either. The male genitalia of A. pallida drawn by Leraut (2014: 405, fig. 174b) differ from those of the lectotype in much more broader and shorter uncus and the aedeagus that is nearly 1.5 times as long as the length of valva (as long as valva in the lectotype). Here we describe the male genitalia of A. pallida for the first time.

Male genitalia of A. pallida ( Fig. 56 ). Uncus at base about three times as long as broad, gradually narrowed towards rounded apex, scaphium folded, about ⅓ length of uncus; distal sclerite of gnathos narrow, weakly curved dorsally, extending to ⅔ length of the uncus; tegumen subtriangular, as long as broad at base, with distinct transition to uncus; valva narrow, elongated, costa weakly bend before apex, sacculus about ⅔ length of valva, ventral margin gradually rounded towards apex after sacculus, subcostal hump small; juxta u-shaped, tips strongly sclerotized, rounded; transtilla lobes elongated, subtriangular; vinculum moderately broad, gradually narrowed towards weakly rounded apex; aedeagus slender, weakly constricted in middle. Culcita comparatively broad, with long posteromedial projection, anterior margin broadly emarginated.

Figures

FIGURES 13–28. Adults of Ancylosis spp. 13–14. A. roscidella. 15. A. oblitella. 16–17. A. sabulosella. 18-19. A. deserticola. 20–21. A. leucocephala. 22. A. rhodochrella. 23. A. hellenica. 24–28. A. larissae sp. nov. 13. ♀, Crimea. Prep. no. 26/19. 14. ♀, Crimea. Prep. no. 33/19. 15. ♀, Donetsk & Zaporizhzhia reg. 16. ♂, Luhansk reg. Prep. no. 070.18. 17. ♂, Lectotype, Naryn. 18. ♀, Kyiv reg. Prep. no. 076.18. 19. ♂, Syntype. Sarepta. Prep. no. 4227 U. Roesler. 20. ♂, Zhamansai. 21. ♂, Holotype, Naryn. Prep. no. 4234 U. Roesler. 22. ♀, Hadjin. Prep. no. 57/19. 23. ♂, Beyrut. Prep. no. 56/19. 24. ♀, Paratype. Crimea. Prep. no. 34/19. 25. ♂, Paratype. Crimea. Prep. no. 36/19. 26. ♂, Paratype. Crimea (photo F. Graf). 27. ♀, Holotype. Crimea. Prep. no. 29/19. 28. ♂, Paratype. Crimea. Prep. no. 32/19. Scale bar: 1 cm.

FIGURES 51–56. Male genitalia of Ancylosis spp. 51–53. A. deserticola. 54–55. A. leucocephala. 56. A. pallida. 51. Syntype. Sarepta. Prep. no. 4227 U. Roesler. 52. Kherson reg. Prep. no. 272/18. 53. Syntype. Sarepta. Prep. no. 43/19. 54. Holotype. Naryn. Prep. no. 4234 U. Roesler. 55. Zhamansai. Prep. no. 110/19. 56. Lectotype. Sarepta. Prep. no. 69/19. Scale bar: 1 mm.

FIGURES 72–75. Female genitalia of Ancylosis spp. 72–73. A. deserticola. 74. A. leucocephala. 75. A. pallida. 72. Syntype. Sarepta. Prep. no. 39/19. 73. Kyiv reg. Prep. no. 274/18. 74. Margilan. Prep. no. 46/19. 75. Paralectotype. Sarepta. Prep. no. 67/19. Scale bar: 1 mm.

FIGURES 76–79. Habitats of Ancylosis spp. 76. A. albicosta. Oleshki Sand, vic. of Burkuty vil., Kherson region. 77. A. deserticola and A. sareptalla. Oleshki Sand, vic. of Chelburda (Proletarka) vil., Kherson region. 78. A. larissae sp. nov. Uzun-Syrt, Crimea (photo V. Savchuk). 79. A. substratellum. Barakol Lake, Crimea.