Ypsolopha straminella, Ponomarenko, Margarita G. & Zinchenko, Yuliya N., 2013

Ponomarenko, Margarita G. & Zinchenko, Yuliya N., 2013, New taxonomic data on the genus Ypsolopha Latreille (Lepidoptera, Ypsolophidae) with descriptions of two new species from the Russian Far East, ZooKeys 289, pp. 25-39 : 33-35

Ypsolopha straminella sp. n. Figs 61214

Type material.

Holotype: ♂, Russia, Primorskii krai, Khasanskii district, Mramornaya Mt. foot, 42°34'12"N, 130°48'30"E, 31 July -1 August 2003, M. Ponomarenko leg., gen. slide Yps.-62 MP (IBSS); labeled by red label with designation “Holotype”. Paratypes (41♂, 27♀): Russia. Amurskaya obl.: 2♂, 1♀, 17 km NNE Blagoveshchensk, altitude 160 m, 50°24'01"N, 127°40'20"E, 19, 20 August 2006, gen. slide Yps.-65 MP (♀); 2♂, 1♀, 15 km SSE Svobodnyi, Malaya Sazanka village vic., 51°14'03"N, 128°03'54"E, altitude 160 m, 21, 22 August 2006; 1♂, Mikhailovskii distr., 17 km NE Mikhailovka, Zavitaya riv., altitude 166 m, 50°023'23"N, 128°58'19"E, 15 August 2006, M. Ponomarenko leg. (IBSS). Khabarovskii krai: 1♀, Pivan’, 50°31'N, 137°04'E, 18 July 2007, V. Dubatolov, A. Syachina leg. (IBSS). Jewish Autonomous Region: 1♀, Smidovichiskii distr., Zabelovskii reserve, 8-14 July 2001, A. Streltcov, P. Osipov leg. (IBSS). Primorskii krai: 4♂, 1♀, same locality, collecting time and collector as in holotype, gen. slide Yps.-63 (♀) MP; 2♂, 3♀, same locality as in holotype, 2 August 2003; 2♂, 2 km NW Partizansk, Frentzovka village vic., altitude 400 m, 43°12'52"N, 133°01'27"E, 4-5 August 2002, gen. slide Yps.-64 MP; 13♂, 10♀, Ussuriyskii distr., Gornotaezhnoe, 43°41'42"N, 132°09'24"E, 20 July, 1 September, 1 October 1994; 17, 22, 23 August, 10, 21, 22, 23 September 1995, gen. slide Yps.-66 (♂) MP; 2♂, 42 km W Ussuriisk, 4 km N Monakino, 43°46'50"N, 131°26'29"E, altitude 290 m, 23 April 2003; 1♀, 5 km E Nikolo-Lvovskoe village, 43°52'16"N, 131°25'14"E, altitude 174 m, 2 September 2002, gen. slide Yps.-67 MP; 1♂, 1♀, 29 km SE Ussuriisk, 43°37'48"N, 132°13'44"E, 25 August 2001, M. Ponomarenko leg.; 1♂, 4,5 km SE Okeanskaya, 43°13'06"N, 132°03'26"E, 16 September 1993, E. Beljaev leg.; 1♀, Chernigovskii distr., 42 km S Spassk-Dalnii, Gribnoe village vic., 44°15'29"N, 132°44'51"E, 25 August 1998, gen. slide Yps.-68 MP; 5♂, 4♀, Khasanskii distr., 14 km SW Slavyanka, Ryazanovka, 42°47'36"N, 131°15'06"E, 9-10 September 1992; 23 August 1997; 19, 20, 21 September; 22 October 2008; 16 August 2010; 5♂, 2♀, Gamov Peninsula, Srednyaya Inlet, 42°35'18"N, 131°12'48"E, 24 July 1997, 8, 9, 13, 14 August 2009; 1♂, Gamov Peninsula, Gorshkova Inlet, 42°40'17"N, 131°12'48"E, 30 August 1997, M. Ponomarenko leg. (IBSS).

Diagnosis.

The new species resembles Ypsolopha leuconotella (Snellen, 1884) in the genitalia of both sexes: in the male in the shape of the valva with parallel margins in the distal half, the gnathos with a wide, rounded median plate, the almost straight aedeagus with indistinct cornuti of less than half the length of the aedeagus; and in the female in the presence of a scobinate zone in the ductus bursae. The new species differs from leuconotella in the male genitalia in the narrower base of the valva, which is less than one-half its greatest width (in leuconotella equal to one-half of greatest width), the rounded emargination between the anterior lobes of the tegumen (in leuconotella the emargination between the anterior lobes of the tegumen is triangular) and the inflated basal part of the aedeagus (caecum) (aedeagus narrowed basally in leuconotella). The new species can also be separated in the female genitalia by a scobinate zone in the ductus bursae of slightly over one-half the ductus length (in leuconotella the ductus with scobinate inner surface except 1/10 just following antrum), and a large signum, longer than two-thirds of corpus bursae (in leuconotella slightly less than one-half of corpus bursae length).

Description.

Adult (Fig. 6).Frons and vertex covered by closely fitting greyish yellow scales. Occiput with appressed elongated scales mainly greyish yellow and speckled with dark before light tips. Antenna filiform; scape greyish yellow with light yellow pecten; each flagellomere with light yellow basal and dark brown distal half; ventrally ciliated. Labial palpus porrect and slightly curved upwards, terminally pointed; basal segment white; second segment basally white, with triangular greyish yellow ventral tuft, speckled with brown; third segment as long as second, dorsally white, ventrally dark brown with scattered white scales. Thorax and tegula brownish grey. Foreleg with white femur and tibia; each tarsomere with narrow white distal ring, irrorated with brown. Midleg with white femur, tibia, ventral side of first (basal) tarsomere and spurs, second and following tarsomeres speckled with brown, lighter laterally and with narrow white ring distally. Hindleg with white femur, tibia, basal tarsomere and spurs; 2 nd– 5th tarsomeres speckled with brown and with white ventral margin. Forewing length 7.5-8.0 mm (n = 6), wingspan 16.5-17.3 mm (n = 4), sub-trapezoidal, with falcate, obtuse apex and sinuate termen. Ground colour of forewing greyish yellow irrorated with brown and greyish scales; 1/6th of costal margin brown; large greyish brown spot on dorsal half at 1/4, wide oblique brown band from base of R1 to middle of dorsal margin, large semi-oval greyish brown spot at end of cell, smaller concolorous spot dorsad and distad of latter, dorsal margin of wing and tornus greyish brown, six indistinct small strokes on costal margin from middle to 7/8; fringe greyish yellow. Hindwing dark brownish grey, darker towards apex; fringe brownish grey basally and yellow distally.

Male genitalia (Fig. 12). Uncus equal to vinculum in width, with almost straight posterior margin; socii 2.3 times length of median plate of gnathos, with long setae, curved outwardly before pointed apices. Median plate of gnathos with parallel lateral margins, one-third width of uncus. Tegumen divided into pair of anteriorly angulate lobes, anterior margin with triangular median emargination, not exceeding 1/4 of tegumen length. Valva more or less obovate, distally rounded and considerably narrowed towards base, with almost straight costal margin and rounded saccular margin; costal and saccular area equal in width, reaching 4/5 length of valva. Vinculum band–like, laterally with small triangular plates; saccus tapering towards apex, almost as long as socii. Anellus setose and wider than basal part of valva. Aedeagus almost straight, with cylindrical apex; coecum slightly longer than 1/4 length of aedeagus, slightly inflated in proximal part and wider than distal part of aedeagus; two long cornuti less than one-half length of aedeagus, each with distal needle–like part, less 1/5 total length of cornutus.

Female genitalia (Fig. 14). Papilla analis semi-oval, ovipositor telescopic, intersegmental membrane between IX and VIII almost four times length of VIII. Apophysis posterior slender, slightly thickened anteriorly, 2.75 times length of apophysis anterior; apophysis anterior with Y–shaped base, its ventral branch extending lateroventrally along anterior margin of VIII. Segment VIII, its ventral sclerotization, ostium and antrum very similar to Ypsolopha melanofuscella sp. n. Ventral sclerotization of VIII with sinuous anterior margin, in distal 1/3 divided into pair of rounded lobes, bearing long setae on rounded apex. Ostium slightly wider than one-half of segment VIII; antrum cone–shaped, separated from ductus bursae by narrowing and ring–like colliculum concave inward dorsally, its ventral part as narrow band and dorsal one 3 times wider. Ductus bursae tubular, membranous, 1.7 times length of corpus bursae, dilated anteriorly; anterior part with dense minute scobinations on inner surface from 2/5 to 1/14 length of ductus. Bulla seminalis shorter than corpus bursae, with ductus seminalis 1/3 length of bulla seminalis, arising from ductus bursae just near colliculum. Corpus bursae ovate, membranous; signum large band–like, comparatively wide and long, more than 2/3 length of corpus bursae, with two transverse ridges.

Distribution.

Russia (south of Far East).

Etymology.

The species name, straminella, is derived from the Latin stramineus, meaning “straw”, or "pale yellow" and refers to the colour of the forewing of the new species.