Udea albostriata, Zhang, Dandan & Li, Jinwei, 2016

Zhang, Dandan & Li, Jinwei, 2016, Two new species and five newly recorded species of the genus Udea Guenee from China (Lepidoptera, Crambidae), ZooKeys 565, pp. 123-139 : 132-135

Taxon classification Animalia Lepidoptera Crambidae

Udea albostriata sp. n. Figs 2, 3, 5-11

Type-locality.

China, Hebei, Laiyuan County, Taomugeda, 39°37'N, 114°59'E, 1420 m, 3-VIII-2013, coll. Xiaolin Liu.

Type material.

Male holotype, China: Hebei: Taomugeda, Laiyuan County, 39°37'N, 114°59'E, 1420 m, 3-VIII-2013, coll. Xiaolin Liu, genitalia slide no. LJW12204 (SYSBM); Paratypes.14♂8♀, same data as holotype, genitalia slides no. LJW12173 (♂), LJW12178 (♂), LJW12245 (♂), LJW12283 (♂), LJW12284 (♀), LJW12286 (♀), LJW12287 (♀), LJW12288 (♂), LJW12292 (♀), LJW12296 (♀) (SYSBM); 2♀, Hebei: Jinhekou, Wei County, 39°57'N, 114°56'E, 1112 m, 5-VIII-2013, coll. Weicai Xie, Xiaolin Liu, genitalia slide no. LJW12297 (♀) (SYSBM). Additional material. China: Hebei: 1 abdomen missing, Taomugeda, Laiyuan County, 39°37'N, 114°59'E, 1420 m, 3-VIII-2013, coll. Xiaolin Liu; 1 abdomen missing, Jinhekou, Wei County, 39°57'N, 114°56'E, 1112 m, 5-VIII-2013, coll. Weicai Xie, Xiaolin Liu.

Diagnosis.

Udea albostriata is closely related to Udea cyanalis , Udea prunalis , Udea inquinatalis , Udea orbicentralis -complex with similar ground colour and maculation as mentioned in diagnosis of Udea prunalis , but can be distinguished from Udea cyanalis , Udea nebulatalis , Udea proximalis by corpus bursae with a lanceolate signum in female genitalia; differs from Udea prunalis , Udea inquinatalis , Udea grisealis and Udea intermedia by long ductus bursae about twice the length of the corpus bursae; differs from Udea orbicentralis in: praephallus with a sclerotized, granulated area and a projecting ridge strongly denticulate, antrum much broader and shorter than in Udea orbicentralis , and not bulged laterally.

Description.

Wingspan 17-23 mm. Frons and vertex dark brown, dusted with light grey. Labial palpus slightly upturned obliquely, third segment porrect, dark brown, dusted with light grey, contrastingly white at base ventrally, length approximate three times the diameter of the eye. Maxillary palpus dark brown, dusted with light grey, with tip a brush of scales. Basal scaling of proboscis creamy white. Antenna with dark scales dorsally. Thorax dark greyish, dusted with light grey dorsally, greyish-white ventrally. Abdomen grey to dark greyish dorsally, greyish-white ventrally. Legs greyish-white, with scattered few dark scales, sometimes mid- and hind-tibiae, tarsus dark brown, dusted with white outwardly.

Forewing ground colour greyish white, dusted with dark brown, proximal and distal cellular stigmata and postmedian area strongly and contrastingly dark browned; antemedian line from 1/5 of costa oblique outwards to posterior margin of cell, then sinuating to 1/3 of posterior margin; proximal cellular stigma transversely oval, dark brown, rimmed with blackish; distal cellular stigma nearly 8-shaped, coloured like proximal cellular stigma; postmedian line sinuate, from costal 4/5 slightly arched to 3/5 of CuA2, followed by a V-shaped curve, then to 2/3 of posterior margin, traced by a greyish-white line in postmedian area; marginal brown dots at vein ends on costa and termen; basal half of fringe pale grey, distal half dirty white. Hindwing grey, markings indistinct; a dark steak at anterior angle and a blackish dot at posterior angle of cell; postmedian line very indistinct, parallel with termen; fringe paler than in forewing.

Male genitalia (Fig. 5). Uncus with basal half nearly triangular, apex bulbous and setose dorso-laterally. Pseudognathos slender and ribbon-like, roundly triangular medially. Transtilla triangular. Valva narrow and elongate, costa slightly concave, slightly tapering in thickness towards apex, nearly parallel-sided with ventral valva edge; fibula extending ventrad, weakly sclerotised, blade-shaped, curved, with tip pointed; sacculus slightly inflated. Saccus ventrally keeled. Juxta broad ventrally, tapered dorsally, with dorsal 1/3 bifid. Phallus cylindrical, slightly curved, with posterior phallus apodeme divided into a sclerotised, granulated area and a projecting denticulate ridge most posteriorly.

Female genitalia (Figs 6-11). Ovipositor lobes flat, crescent-shaped, densely setose. Anterior apophyses a little longer than posterior apophyses. Antrum sclerotised, nearly cylindrical, slightly tapering anteriorly, mesoventrally with two longitudinal ridges. Ductus bursae slender, about twice the length of the corpus bursae, slightly sclerotised posteriorly, colliculum short, ductus seminalis from ductus bursae close to colliculum. Corpus bursae nearly round, accessory signum (Figs 7-11) narrowly crescent-shaped, or weakly rod-shaped; signum lanceolate, ends rounded, with a mesally interrupted transverse ridge in the middle.

Distribution.

China (Hebei).

Etymology.

The specific name is derived from the Latin albus = white, striatus = striate, referring to forewing postmedian line traced by a greyish-white line in the postmedian area.