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

Subgenus Bifurcistigma subgen. nov.

TS.

Stigmatophora obraztsovi Daniel, 1951 , here designated.

TL.

Chekiang, “ Berge südlich Wenchow ” ( China, Zhejiang).

Diagnosis.

Unlike members of subgenus Stigmatophora (Figs 7 View Figures 1–12 , 8 View Figures 1–12 , 19 View Figures 13–22 , 25 View Figures 23–26 ) and Pseudomiltochrista (Figs 9–12 View Figures 1–12 , 20–22 View Figures 13–22 , 26 View Figures 23–26 ), Bifurcistigma subgen. nov. (Figs 1–6 View Figures 1–12 , 13–18 View Figures 13–22 , 23–24 View Figures 23–26 ) has the following characters (details for Stigmatophora and Pseudomiltochrista are in parentheses, respectively): 1) forewing ground color brown, with an orange band (mostly yellow, with a pattern or spots, partially orange; dark yellow, with rosy veins); 2) ground color of hindwing pale brown to pale blackish brown (mostly dark yellow, partially dark orange; light yellow, with rosy tint); 3) head and patagium orange (mostly yellow, partially red; yellow mixed with red); 4) thorax purple-grey (mostly dark yellow, partially light red and orange; brownish-yellow with red); and 5) abdomen pale brown to pale blackish brown (almost dark yellow, partially light red and orange; light yellow).

Male genitalia: 1) uncus stout (others are thinner, ca 1 / 2 length of Bifurcistigma subgen. nov.; elongated); 2) valva without harpe (harpe small, thorn-like; broad, crest-like); 3) lamella centralis moderately sclerotized (others with no lamella centralis); 4) sacculus with a medial longitudinal sclerotized band at 1 / 3 of the length (with no medial process, except in S. flava ; with a setose thorn-like medial process); 5) juxta with two lateral lobes each side (flat, shield-like; with dorsal process); and 6) cornuti in vesica dense, short, and stout, arranged in a U-shaped band (shortest, almost granular; longest, spine-like, and sparsely arranged).

In the female genitalia: 1) posterior margin of 8 th sternite sclerotized and semicircular (membranous; irregularly dentate); 2) ductus bursae extremely broad, strongly sclerotized, roughened with wrinkles (elongate, thin, and weakly sclerotized, and smooth; thin, only sclerotized on left side); and 3) corpus bursae densely covered with spinules, without appendix bursae (other two with a strong spine-like scobination and narrow appendix bursae).