Stenoloba ronkayi Behounek & Kononenko 2010, sp. n.

(Figs. 27, 45)

Type material. Holotype: male, Vietnam, Prov. Lao Cai, Mt. Fan-si-Pan, 14 km NW Cha-Pa, 1800 m, 22°21'N, 103°46'O, 29.–30.viii1998, genitalia slide RKY 7615, HNHM, Budapest. The holotype is deposited in the Hungarian Nature History Museum, Budapest, Hungary.

Diagnosis. The new species belong to manleyi species group. It is close to S. liuii and S. pulla, but differs from both by wing pattern and structure of male genitalia: narrower valva, presence of subscaphium and shape of aedeagus. Female unknown.

Description. Adult (Fig. 27). Wingspan 25 mm. Head and thorax ochreous-green, with blackish scales; thoracic crest present, formed by ocherous scales; ground color of forewing greyish with ochreous-green tint, wing pattern rather sharp, distinct; basal field prominently yellowish white, with central white streak surrounded by black spots of basal line; subbasal field with blackish suffusion, forming black dash in central part, bordered by antemedial line; medial field greyish, darker in costal area; orbicular rounded, formed by black bordering line; reniform bean-shaped, bordered by black line; medial line distinct only in costal area and expressed as vertical streak in lower part of wing; postmedial line twin, arising from costal area above reniform, incurved outward, then following straight to ventral margin; subterminal field brownish-grey, terminal field grey; subapical streak in costal area prominently black, surrounded with pale grey suffusion in subapical area; terminal line expressed as row of black dots; cilia greyish. Hindwing brownish-grey, darker to terminal margin; discal spot hardly traceable; cilia pale, greyish-yellow.

Male genitalia (Fig. 45). Uncus present, rather long and thin, weak; tegumen and vinculum thin, tegumen 2 times higher than vinculum; transtilla with large sclerotized plates; juxta leave-shaped; valva rather long, broad basally, from basal part to apex with parallel margins; sacculus long, relatively narrow; clasper as longitudinal plate; cucullus covered with strong setae; aedeagus rather short and wide, with plate like carina and sharply constricted caulus, similarly to S. yunnana; vesica broadly-tubular, projecting ventrally, with small diverticulum and flat wide cornutus.

Distribution. (Fig. 83). North Vietnam. The species is known only from its type-locality, where it occurs in mountains at elevation 1800 m.

Etymology. The species name is dedicated to our friend Laszlo Ronkay, Hungary.