Stigmatophora (Bifurcistigma) longa, Zhang & Zhao & Han, 2025

Stigmatophora (Bifurcistigma) longa sp. nov.

Figs 4 View Figures 1–12 , 5 View Figures 1–12 , 17 View Figures 13–22 , 18 Common name. 龙痣苔蛾 View Figures 13–22

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 View Figures 1–12 , 2 View Figures 1–12 , 13 View Figures 13–22 , 14 View Figures 13–22 , 23 View Figures 23–26 ) and S. (B.) bucseki (Figs 3 View Figures 1–12 , 6 View Figures 1–12 , 15 View Figures 13–22 , 16 View Figures 13–22 , 24 View Figures 23–26 ), 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 View Figures 1–12 , 5 View Figures 1–12 ). 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 View Figures 13–22 , 18 View Figures 13–22 ). 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 View Figure 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.