Ancylosis sabulosella ( Staudinger, 1879 )

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 : 447-448

Ancylosis sabulosella ( Staudinger, 1879)

( Figs 16, 17 , 38, 61)

Myelois sabulosella Staudinger, 1879 —Stettiner ent. Ztg 328. TL: Narün, NW Kazakhstan.

Material examined. Ukraine: 1♂, Luhansk reg., Milovskyi distr., Striltsivskyi step Nature reserve, at light, 9.vii.2002 (O. Bidzilya). Genitalia slide: V. Yepishin prep. no. 070.18 ( ZMKU) . Kazakhstan: Lectotype of sabulosella : 1 ex. (abdomen missing) “ Sabulosella, Stgr.” | “Origin” | “Narün, Henke” ( MfN) . Afghanistan: 1♂, 2♀, SW- Afghanistan, Fluss Arghandab, 30 km nörd. Kandahar, 1000 m, 23.v.1957 (G. Ebert). Genitalia slide: O. Bidzilya prep. no. 97/ 19♀, 98/ 19♂, 118/ 19♀; 1♂, 1♀, SW-Afghanistan, Hilmendfluss, Darweshan, Registan-Wüste, 500 m, 28.v.1957 (G. Ebert) (all SMNK) . China: 1♂, China, Inner Mongolia, 80 km S Houhhot, Zhao-He, 10.viii.2007 (O. Bidzilya). Genitalia slide: V. Yepishin prep. no. 069.18 ( ZMKU).

Diagnosis. A small (wingspan 10–13 mm) uniformly lemon yellow species with light brown pattern from ⅓ of dorsal margin towards base of the forewing to its mid width ( Figs 16, 17 ). Ancylosis limoniella ( Chrétien, 1911) is very similar externally but it is slightly lighter. The distinctly bulged ventral margin of valva, the large subcostal hump and bend aedeagus are characteristic for the male genitalia. The culcita with broadly bugled anterior margin and with long narrow anterior projection is characteristic too ( Fig. 38 ). Ancylosis limoniella differs in the apically broader valva, the absence of subcostal hump and pointed apically uncus. The female genitalia are characterized by long antrum, zigzag curved ductus bursae and corpus bursae with rounded distal portion. For the differences from related species see below under the description of the female genitalia.

Biology. Host plant is unknown. In Ukraine the single male was attracted to light in steppe habitats in July. However, we suggest the occurance this species in adjacent calcerous habitats.

Distribution. Russia (Stavropolskiy kray, Volga region, Southern Ural) ( Sinev 2008), North-West Kazakhstan (Uralsk, Indersky), Turkmenistan, Uzbekistan, Kyrgyzstan, Afghanistan, Pakistan, Iran, Mongolia ( Roesler 1973), China. In Ukraine the species is known from Luhansk region ( Bidzilya & Budashkin 2004).

Remarks. Myelois sabulosella was described based on one male and three females from Narün (Naryn) (Atyrau region, NW Kazakhstan). One specimen from the type series without abdomen is kept in MfN ( Fig. 17 ). This specimen was designated as a lectotype by Korb (2017: 523, fig. 17). The rest specimens from the type series are not traced in the collection of MfN. Roesler figured the male genitalia of A. sabulosella from the specimen from Afghanistan and the female genitalia from the holotype of A. decolorella Ragonot & Hampson, 1901 from Margilan ( Uzbekistan). We studied male and female of A. sabulosella collected sympatrically in Afghanistan. These specimens are similar externally to specimen from Ukraine and undoubtedly are conspecific to the lectotype of A. sabulosella . Ancylosis decolorella differs both externally ( Ragonot & Hampson 1901, pl. 42, fig. 14) and in the female genitalia from A. sabulosella and considered as a separate species: Ancylosis decolorella Ragonot & Hampson, 1901 spec. rev., stat. nov.

The female genitalia of A. sabulosella are described here for the first time.

Female genitalia of A. sabulosella ( Fig. 61 ). Papillae anales subovate, densely covered with long hairs; both apophyses straight, twice as long as the length of segment VIII; segment VIII as broad as long, tergum VIII with broad V-shaped posteromedial emargination extending anteriorely to about ⅔ length, anterior margin nearly straight with a very weak medial projecting, band-shaped, sternum VIII weakly sclerotized except lateral area; ductus bursae comparatively broad, twice as long as corpus bursae, zigzag curved in proximal portion, with longitudinal folds in distal portion, colliculum very short, antrum long, tubular, weakly broadend posteriorely, with transverse ringshaped sclerite at base, ductus seminalis very slender, arises from the end of ductus bursae before the beginning of colliculum; corpus bursae elongated, pear-shaped, signa long, narrow, thorn shaped with small rounded basal plate.

The female genitalia of A. sabulosella resemble those of A. limoniella but segment VIII is shorter, subquadrate rather than subrectangular, antrum and ductus bursae are longer. Ancylosis umbrilimbella ( Ragonot & Hampson, 1901) differs in the broader, funnel-shaped rather than tubular antrum, longer segment VIII, thicker apophysis anterioris and smaller signa in the distal portion of the bursae copulatrix ( Roesler 1973: pl. 133, fig. 172).

Notes. The record of A. umbrilimbella from China ( Ren 2012: 399–400, figs 256; pl. 11, fig. 256) should be referred to A. sabulosella .

Ancylosis sabulosella , A. limoniella , A. syriopsidis Roesler, 1970 and A. steppicola ( Caradja, 1937) have rather similar wing pattern. Roesler (1973: 410) followed Amsel (1942: 226) considering such cases as a convergence. He mentioned that species from this group can easily be separated by the venation and other external characters which are diagnostic for the subgenera of Ancylosis sensu Roesler (1973) . However, we suggest that correct identification of these species is hardly possible without examination of the genitalia.

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 33–38. Male genitalia of Ancylosis spp. 33–34. A. albicosta. 35. A. oblitella. 36. A. cinnamomella. 37. A. roscidella. 38. A. sabulosella. 33. Kherson reg. Prep. no. 114/17. 34. Syntype. Prep. no. 4226 U. Roesler. 35. Kyiv reg. Prep. no. 083.18. 36. Crimea. Prep. no. 068.18. 37. Zaporizhzhia reg. Prep. no. 287/18. 38. Luhansk reg. Prep. no. 070.18. Scale bar: 1 mm.

FIGURES 59–62. Female genitalia of Ancylosis spp. 59. A. albicosta. 60. A. cinnamomella. 61. A. sabulosella. 62. A. oblitella. 59. Sarepta. Prep. no. 259/17. 60. Kyiv reg. Prep. no. 082.18. 61. Kandahar. Prep. no. 118/19. 62. Donetsk & Zaporizhzhia reg. Prep. no. 074.18. Scale bar: 1 mm.