Stigmatophora (Pseudomiltochrista) dianensis, Zhang & Zhao & Han, 2025

Stigmatophora (Pseudomiltochrista) dianensis sp. nov.

Figs 10 View Figures 1–12 , 11 View Figures 1–12 , 21 View Figures 13–22 , 22 Common name. 云南痣苔蛾 View Figures 13–22

Material examined.

Holotype: China • ♂; Yunnan, Pu’ er, Simao, Manxieba ; 3. VIII. 2018; H. L. Han et. al. leg.; genit. prep. no. ztt-391-1 ; in NEFU.

Paratypes: 1 ♂, same data as holotype; genit. prep. no. ztt-390-1 • 1 ♂, Yunnan, Xishuangbanna, Jinghong, Mengyang, Wild Elephant Valley ; 4-5. VIII. 2018; H. L. Han et. al. leg., genit. prep. no. ztt-321-1 , in NEFU .

Diagnosis.

The new species is similar to S. (P.) zolotuhini (Figs 9 View Figures 1–12 , 12 View Figures 1–12 , 20 View Figures 13–22 , 26 View Figures 23–26 ), but it can be separated by the following morphological characters (details for S. (P.) zolotuhini are in parentheses): in S. (P.) dianensis , forewing 8 mm long, ovoid, costal and outer margins more arched (10 mm, slightly narrow, smooth). In the male genitalia, uncus short and spindle-shaped (long and slender); apex of apical sacculus process hook-shaped (bluntly finger-shaped); harpe elongate conical, moderately sclerotized, covered with short setae (crest-like, weakly sclerotized); juxta with a flat triangular dorsal process (with a clavate dorsal process); and vesica elongate (fist-shaped, with multiple diverticula).

Description.

Adults (Figs 10 View Figures 1–12 , 11 View Figures 1–12 ). Forewing length 8.7 mm in males. Head, patagium, tegula, and thorax dark yellow, with rose veins; antenna filiform, yellow; thorax yellow-brown; abdomen pale yellow. Forewing ovoid, costal and outer margins more arched, with yellow ground color and rose veins, with irregular submarginal line and medial curved spots. Rose-colored pattern completely reaches outer margin. Hindwing pale yellow, scattered with rosy tint. Male genitalia (Figs 21 View Figures 13–22 , 22 View Figures 13–22 ). Uncus robust, rhombic, with bristle. Tegumen membranous, triangular. Valva narrow and symmetrical; costa membranous and smooth; cucullus rather sharp, covered with rough hairs. Sacculus sclerotized, wide at base, gradually narrowing toward apex, with a strongly sclerotized medial process, sharkfin-shaped, directed downwards. Harpe elongate conical, moderately sclerotized, covered with short setae. Vinculum moderately sclerotized, thick, U-shaped. Juxta flat, with a triangular dorsal process. Aedeagus slender tubular, with swollen caecum. Vesica elongate; central region covered with small graniculi and a cluster of cornuti. Female genitalia. Unknown.

Bionomics.

Wild Elephant Valley in Xishuangbanna is within the Mengyangzi Protection Area of the Xishuangbanna National Nature Reserve. It is north of Jinghong City and flanked by the Lancang River to the west and the Xiaohei River to the east. The terrain comprises low hills and mountain basins. The valley has abundant natural resources, harboring tropical rainforests, South Asian tropical evergreen broadleaf forests, and a diverse array of rare flora and fauna. Specimens were collected in a dense broadleaf forest covered with ferns.

Distribution.

China (Yunnan: Pu’ er, Xishuangbanna) (Fig. 27 View Figure 27 ).

Etymology.

The species name “ dian ” is derived from the Chinese character “ 滇 ” (Diān), which is the abbreviation for Yunnan Province.