Istrianis pseudomyricariella, Bidzilya, Oleksiy & Karsholt, Ole, 2015

Bidzilya, Oleksiy & Karsholt, Ole, 2015, Revision of the genus Istrianis Meyrick, 1918 (Lepidoptera, Gelechiidae) with special regard to the Palaearctic region, Zootaxa 4059 (3), pp. 401-445 : 416-417

3. Istrianis pseudomyricariella sp. nov.

Material examined. Holotype ♀, [ Kyrgyzstan] 5 km S of At-Bashi vil., Narynsk. obl., Kirgyz., 13.viii.1981 (Sinev) (gen. prep. 70/11, O. Bidzilya) ( ZIN). Paratypes: 1♀, Naryn vic., STAZR, Kirg. SSR, 3.viii.1981, light (Sinev) (gen. prep. 11/13, O. Bidzilya) ( ZIN); 1♀, [ Tadzhikistan] Staraja Pristan', 12 km S of Dzylykul' at the Vakhsh river, 4.vi. [19]49, larvae beween spun shoots of Tamarix , about 20th of May (Shchetkin); 1♀, same data, but 2.vi. [19]49 (gen. slide 351/14, O. Bidzilya) (all ZMHU).

Material excluded from the type series: 1♂, Greece, Molivos, Lesvos, 8.vi.1994 (Baungaard) (slide 96/592, P. Huemer) ( ZMUC).

Adult ( Figs 16–18 ). Wingspan 11.0– 12.3 mm. Head, thorax and tegulae covered with light grey black-tipped scales, frons nearly white, labial palpus white with black basal and medial rings, upper side of segment 2 white to grey; scape black mottled with whitish, antennal segments black with white basal rings. Forewing comparatively narrow, covered with light grey black-tipped scales, basal 1/5–1/4 black-edged with a few ochreous scales, whitish area from ¼ to about 1/3 length in middle of wing, paired elongated black spots surrounded with orange in the middle and in the end of cell, costal margin with black streak touching base and two black marks just before and after the middle, diffuse whitish patch at ¾ of costal margin, termen black-spotted, cilia light grey, black-tipped; hindwing and cilia grey.

Male genitalia ( Fig. 61 ). Tergite VIII tongue-shaped, distal portion gradually narrowed apically, apex rounded, anteromedial emargination broad, its distal portion subrectangular; sternite VIII less then 1.5 times broader than long, weakly broadened posteriorly, posteriolateral corners narrowed apically; uncus moderately slender, densely haired, distinctly longer than gnathos; gnathos slightly broader than uncus, apex strongly sclerotized, abruptly truncated; tegumen subtriangular, lateral lobes broad, anteromedial emargination rounded apically; cucullus weakly broadened in distal half, slightly shorter than phallus; phallus weakly narrowed distally, apex tapered.

Female genitalia ( Figs 87 , 114–116 ). Segment VIII slightly longer than broad; apophyses anteriores distinctly longer than segment VIII, comparatively thick; anterior margin of sternite VIII straight, posterior margin weakly emarginated in middle; posterior sclerite moderately large, rounded, slightly broader than long, lateral corners with well developed projections; anterior sclerites narrow; subostial folds distinct; antrum narrow, funnel-shaped; ductus bursae long, evenly broadened towards globular corpus bursae; signum subhexagonal, slightly broader than long, margins distinctly serrate, medial ridge comparatively broad.

Diagnosis. I. pseudomyricariella is externally very similar to I. myricariella , but differs in the more distinctly expressed black pattern at the base of forewing; for the differences from I. sattleri see under that species. Also the male genitalia are very similar to those of I. myricariella , but the gnathos is slightly broader in apical fourth and its top is abruptly truncated rather than rounded. The female genitalia are characterized by long and thick apophyses anteriores. For differences from I. kravchenkoi and I. nilssoni which have very similar posterior sclerite, see under those species.

Biology. The larva has been found between spun shoots of Tamarix sp. in Tadzhikistan. Adults have been collected in early June and in August.

Distribution. Kyrgyzstan, Tadzhikistan, Greece.

Etymology. I. pseudomyricariella sp. nov. is named so because of its close similarity to I. myricariella .

Notes. The single male from Greece is considered conspecific with the four females from Central Asia, based on external similarity, but it is kept outside of the type series because it cannot be established that they belong together.

Figures

FIGURES 1 – 21. Adults of Istrianis species. 1 — I. myricariella, ♂, LT, Germany (B. M. gen. slide 7302); 2 — I. myricariella, ♂, Germany (gen. slide 98 / 13, O. Bidzilya); 3 — I. myricariella, ♂, Bulgaria (gen. slide 270 / 14, O. Bidzilya); 4 — I. myricariella, ♂, Greece (gen. slide 197 / 14, O. Bidzilya); 5 — I. myricariella, ♀, Spain (gen. slide 255 / 14, O. Bidzilya); 6 — I. myricariella, ♂, Spain (gen. slide 260 / 14, O. Bidzilya); 7 — I. myricariella, ♀, Tunisia (gen. slide 271 / 14, O. Bidzilya); 8 — I. arenicolella, ♂, PLT, Algeria (gen. slide 99 / 13, O. Bidzilya); 9 — I. arenicolella, ♀, Algeria; 10 — I. arenicolella, ♀, France; 11 — I. arenicolella, ♀, Spain (gen. slide 263 / 12); 12 — I. arenicolella, ♂, Spain (gen. slide 268 / 12, O. Bidzilya); 13 — I. arenicolella, ♂ (amilcarella, HT), Tunisia (gen. slide 374 c, K. Sattler); 14 — I. arenicolella, ♂, Tunisia (gen. slide 276 / 14, O. Bidzilya); 15 — I. arenicolella, ♀, Spain (gen. slide 269 / 14); 16 — I. pseudomyricariella, ♀, HT, Kyrgyzstan (gen. slide 70 / 11, O. Bidzilya); 17 — I. pseudomyricariella, ♀, PT, Kyrgyzstan (gen. slide 11 / 13, O. Bidzilya); 18 — I. pseudomyricariella, ♂, Greece (gen. slide 96 / 592, P. Huemer); 19 — I. nilssoni, ♀, HT, Greece (gen. slide 5519, H. Hendriksen); 20 — I. nilssoni, ♂, PT, Greece (gen. slide 254 / 14, O. Bidzilya); 21 — I. nilssoni, ♂, PT, Greece (gen. slide 5543, H. Hendriksen).

FIGURES 57 – 62. Male genitalia of Istrianis species. 57 — I. myricariella, Tunisia (gen. slide 276 / 14, O. Bidzilya); 58 — I. myricariella, Turkey (gen. slide 6112, H. Hendriksen); 59 — I. myricariella, Spain (gen. slide 260 / 14, O. Bidzilya); 60 — I. arenicolella, Spain (gen. slide 268 / 12, O. Bidzilya); 61 — I. pseudomyricariella, Greece (gen. slide 96 / 592, P. Huemer); 62 — I. nilssoni, Greece (gen. slide 5543, H. Hendriksen).

FIGURES 87 – 89. Female genitalia of Istrianis species. 87 — I. pseudomyricariella, PT, Kyrgyzstan (gen. slide 11 / 13, O. Bidzilya); 88 — I. nilssoni, HT, Greece (gen. slide 5519, H. Hendriksen); 89 — I. nilssoni, PT, Greece (gen. slide 6147, H. Hendriksen).

FIGURES 108 – 125. Female genitalia of Istrianis species, sternite VIII. 108 — I. myricariella, Germany (B. M. gen. slide 6255); 109 — I. myricariella, Bulgaria (gen. slide 179 / 14, O. Bidzilya); 110 — I. myricariella, Tunisia (gen. slide 271 / 14, O. Bidzilya); 111 — I. arenicolella, PLT, Algeria (gen. slide 64 / 13, O. Bidzilya); 112 — I. arenicolella, Spain (gen. slide 263 / 12, O. Bidzilya); 113 — I. arenicolella, Spain (gen. slide 269 / 14, O. Bidzilya); 114 — I. pseudomyricariella, PT, Kyrgyzstan (gen. slide 11 / 13, O. Bidzilya); 115 — I. pseudomyricariella, HT, Kyrgyzstan (gen. slide 70 / 11, O. Bidzilya); 116 — I. pseudomyricariella, PT, Tadzhikistan (gen. slide 351 / 14, O. Bidzilya); 117 — I. nilssoni, HT, Greece (gen. slide 5519, H. Hendriksen); 118 — I. nilssoni, PT, Greece (gen. slide 6147, H. Hendriksen); 119 — I. kravchenkoi, PT, Greece (gen. slide 5947, H. Hendriksen); 120 — I. wachtlii, Egypt (gen. slide 62 / 10, O. Bidzilya); 121 — I. brucinella, Egypt (gen. slide 266 / 12, O. Bidzilya); 122 — I. brucinella, Pakistan (gen. slide 185 / 14, O. Bidzilya); 123 — I. sattleri, PT, Pakistan (B. M. gen. slide 14359); 124 — I. armatus, PT, Pakistan (gen. slide 568 / 14, O. Bidzilya); 125 — I. femoralis, Kyrgyzstan (gen. slide 100 / 13, O. Bidzilya);