Istrianis kravchenkoi, 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 : 421-424

5. Istrianis kravchenkoi sp. nov.

Material examined. Holotype ♂, " Israel ", Jericho, Kalia, May 2004, V. Kravchenko (gen. slide 5699, H. Hendriksen) ( ZMUC); Paratypes: 3♀, same data as holotype (gen. slide 5497, 5700, 5735, H. Hendriksen) ( TAU, ZMKU, ZMUC).

Adult ( Fig. 22 ). Wingspan 9.1–12.0 mm. Head and thorax covered with grey, black-tipped scales; tegulae light grey to creamy; segment 2 of labial palpus grey with black basal, medial and subapical rings, segment 3 acute, white with black medial and subapical rings; scape greyish brown, flagellum with alternating black and grey rings; forewing creamy to dark grey or nearly black, black scales concentrated mainly along dorsal margin from basal 1/4 and in distal half of forewing, a black spot at base, paired black spots with few light brown scales at ¼, at 2/3 and one black dot at 1/ 2 in the middle of the wing, a black streak at half length near dorsal margin, costal margin black at base, with two nearly connected black spots of irregular shape in middle third, its subapical quarter creamy; cilia white, brown-tipped; hindwing light grey with dark grey cilia.

Variation. The examined specimens are somewhat worn; they differ slightly in the expression of the black pattern at the base of costal margin of the forewing.

Male genitalia ( Fig. 63 ). Tergite VIII subtriangular, distal portion moderately narrow, apex rounded, anteromedial emargination very deep and broad; sternite VIII about 1.5 times broader than long, posteriolateral projections short; uncus digitate, weakly narrowed at base, rounded apically, densely covered with long hairs; gnathos about as long as uncus, gradually narrowing apically, apex strongly sclerotized, without hook; tegumen subtriangular, posterior part strongly inflated, anteromedial emargination narrow, lateral lobes broad with rounded inner margins; cucullus weakly constricted at base, gradually broadened apically, phallus basally broad, tapered distally, slightly constricted in middle, shorter than cucullus.

Female genitalia ( Figs 90 , 119 ). Segment VIII trapezoidal, slightly longer than broad; apophyses anteriores longer than segment VIII; anterior margin of sternite VIII nearly straight, posterior margin weakly emarginated in middle; posterior subostial sclerite moderately large, subhexagonal, slightly broader than long, lateral corners with very short projections, anterior sclerites comparatively broad, prolonged, lateral folds distinct, ostium small; ductus bursae long, distal 1/3 finely spinulated, evenly broadened towards subovate corpus bursae; signum subhexagonal, slightly broader than long, margins distinctly serrate.

Diagnosis. I. kravchenkoi may be confused externally with I. nilssoni , but the forewing is broader and without a subcostal orange dot at ½ of the forewing, characteristic for the latter species. The male genitalia are closest to those of I. brucinella , I. arenicolella and other species with broad lateral lobes of tegumen, but can easily be distinguished by the strongly inflated posterior portion of the tegumen. The female genitalia resemble those of I. pseudomyricariella , but the posterior sclerite is slightly larger and with shorter lateral projection, the anterior sclerites are broader and apophyses anteriores are shorter.

Biology. Host plant unknown. Adults were collected at light in May.

Distribution. Middle East ( Palestine).

Etymology. I. kravchenkoi is named after Vasiliy Kravchenko, Tel Aviv, Israel who collected the type series.

Figures

FIGURES 22 – 42. Adults of Istrianis species. 22 — I. kravchenkoi, ♂, HT, Palestine (gen. slide 5699, H. Hendriksen); 23 — I. wachtlii, ♂, Palestine (gen. slide 37 / 11, O. Bidzilya); 24 — I. wachtlii, ♀, Egypt (gen. slide 62 / 10, O. Bidzilya); 25 — I. brucinella, ♀, Egypt (gen. slide 266 / 12, O. Bidzilya); 26 — I. brucinella, ♀, Pakistan; 27 — I. sattleri, ♂, HT, Pakistan (B. M. gen. slide 14355); 28 — I. sattleri, ♂, PT, Pakistan (gen. slide 413 / 14, O. Bidzilya); 29 — I. armatus, ♂, HT, Yemen (gen. slide 567 / 14, O. Bidzilya); 30 — I. armatus, ♀, PT, Yemen (gen. slide 568 / 14, O. Bidzilya); 31 — I. femoralis, ♂, Kyrgyzstan; 32 — I. lvovskyi, HT, ♂, Mongolia (gen. slide 63 / 10, O. Bidzilya); 33 — I. lvovskyi, ♂, PT, Mongolia (gen. slide 252 / 12, O. Bidzilya); 34 — I. lvovskyi, PT, ♂, Mongolia; 35 — I. sruogai, PT, ♂, Tadzhikistan; 36 — I. sruogai, PT, ♀, Tadzhikistan (gen. slide 178 / 14, O. Bidzilya); 37 — I. piskunovi, HT, ♂, Ukraine (GU 96 / 630, P. Huemer); 38 — I. falkovitshi, HT, ♂, Turkmenistan (gen. slide 257 / 12, O. Bidzilya); 39 — I. falkovitshi, PT, ♀, Turkmenistan (gen. slide 10 / 13, O. Bidzilya); 40 — I. squamodorella, LT, ♂, Palestine (gen. slide 26 / 11, O. Bidzilya); 41 — I. squamodorella, PT, ♀, Palestine (gen. slide 26 / 11, O. Bidzilya); 42 — I. squamodorella, PT, ♀, Palestine.

FIGURES 63 – 68. Male genitalia of Istrianis species. 63 — I. kravchenkoi, Palestine, (gen. slide 5699, H. Hendriksen); 64 — I. wachtlii, Palestine (gen. slide 37 / 11, O. Bidzilya); 65 — I. brucinella, Egypt (gen. slide 401 / 14, O. Bidzilya); 66 — I. brucinella, Pakistan (B. M gen. slide 23777); 67 — I. sattleri, Pakistan (gen. slide 413 / 14, O. Bidzilya); 68 — I. sattleri, Pakistan (B. M. gen. slide 14355).

FIGURES 90 – 92. Female genitalia of Istrianis species. 90 — I. kravchenkoi, PT, Greece (gen. slide 5947, H. Hendriksen); 91 — I. wachtlii, Egypt (gen. slide 62 / 10, O. Bidzilya); 92 — I. brucinella, Egypt (gen. slide 266 / 12, O. Bidzilya).

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);