Stigmatophora (Bifurcistigma) longa Zhang, Zhao & Han, 2025, sp. nov.

Stigmatophora (Bifurcistigma) longa sp. nov. Figs 4, 5, 17, 18 Common name. 龙痣苔蛾 Material examined. Holotype: China • ♂; Heilongjiang, Shangzhi, Changshou, Laoyeling; 5. VIII. 2009; P. Wang et. al. leg.; genit. prep. no. wp-90-1, in NEFU. Paratype: 1 ♂, same data as holotype; genit. prep. no. wp-89-1, in NEFU. Diagnosis. This new species is highly similar to S. (B.) obraztsovi (Figs 1, 2, 13, 14, 23) and S. (B.) bucseki (Figs 3, 6, 15, 16, 24), but can be distinguished by the following morphological characters (details for S. (B.) obraztsovi and S. (B.) bucseki are in parentheses, respectively): in S. (B.) longa, band on M 2 not connected with costal margin (completely connected; slightly connected). In the male genitalia, ampulla sclerotized and crutch-shaped (narrow and slender; shorter and horn-shaped). Description. Adults (Figs 4, 5). Forewing length 9.8 mm in male. Antenna filiform. Thorax dark brown; tegula chocolate; abdomen taupe-brown, lighter on last abdominal segment. Forewing ground color brownish-black, with orange bands along costal, inner, and lower margins of cell and veins M 2 and Cu 1; bands along M 2 and Cu 1 slightly widening toward outer margin, band along inner margin not reaching anal angle. Hindwing ground color brown, terminal line distinct, fringe brown. Male genitalia (Figs 17, 18). Uncus sclerotized, robust, and blunt at apex. Tegumen bell-shaped, ca 1.21 times as long as valva. Valva wide, with cucullus rounded. Costa relatively smooth, mid-region slightly concaved. Sacculus sclerotized, wide at base, tapering towards end, sacculus process hooked, separated from valva. Ampulla strongly sclerotized, elongated, crutch-shaped. Lamella centralis moderately sclerotized, extending from base of ampulla to sacculus process. Vinculum strongly sclerotized, V-shaped. Juxta with two weakly sclerotized lateral lobes, kidney-shaped. Aedeagus robust, slightly bent near vesica. Carinal plate weakly sclerotized. Vesica nearly spherical, thin membranous near base, granulated at middle, and with a row of short, distal cornuti distributed. Female genitalia. Unknown. Bionomics. The type series was collected in early August at an altitude of 1318 m in a mixed coniferous and broadleaf forest. The forest floor was covered with dense growth of shrubs and trees. Distribution. China (Heilongjiang: Shangzhi) (Fig. 27). Etymology. The species is named after “ loong ”, in honor of the current year of the Chinese zodiac, and it also represents the species collection location, Heilongjiang.