Eversmannia fuscifrons ( Warren, 1896 ), 2025

Han, Ming-Xu & Han, Hui-Lin, 2025, A taxonomic review of the genus Eversmannia Staudinger, 1871 (Lepidoptera, Uraniidae) from China, with descriptions of three new species and three new combinations, ZooKeys 1251, pp. 275-291 : 275-291

publication ID	https://doi.org/10.3897/zookeys.1251.145353
publication LSID	lsid:zoobank.org:pub:DA227531-72F0-4920-8147-6F703280FDCC
DOI	https://doi.org/10.5281/zenodo.17095347
persistent identifier	https://treatment.plazi.org/id/C37B3472-51D2-5F18-8F82-3FE30A2DA2FD
treatment provided by	ZooKeys by Pensoft
scientific name	Eversmannia fuscifrons ( Warren, 1896 )
status	comb. nov.

Treatment

Eversmannia fuscifrons ( Warren, 1896) comb. nov.

Figs 7 View Figures 1–14 , 8 View Figures 1–14 , 18 View Figures 15–21 , 25 View Figures 22–28 , 34 View Figures 29–39

Epiplema fuscifrons Warren, 1896: 348. Type locality: Sikkim, India; type specimens: in coll. NHMUK Geometroidea - Uraniidae - Epip [eminae- 41 A- 038893; Sohn and Yen 2005: 44–70, fig. 2 W.

Epiplema bicaudata : Inoue 1998: 81, pl. 138: 3; Singh and Lekhendra 2024: 121 (2) (misidentified).

Material examined.

China – Xizang Autonomous Region • 1 ♂, 4 ♀♀; Motuo County, Deergong Village ; 26 May – 4 Jun. 2021; HL. Han leg.; genit. prep. hmx- 216-1, hmx- 103-2, hmx- 104-2, hmx- 199-2; NEFU • 1 ♀; Motuo County, Renqingbeng Temple ; 29 Aug. 2024; YT. Fu leg.; NKU .

Redescription.

Adult (Figs 7 View Figures 1–14 , 8 View Figures 1–14 , 34 View Figures 29–39 ). Forewing length: 9.5 mm in male, 9–11 mm in female. Head: white mix brown; labial palpus up-curved; antenna plumose in male and filiform in female. Thorax and abdomen white. Forewing ground color white; with dark-brown band on costal margin area in antemedial and basal line regions; antemedial line brown, discontinuous; postmedial line double, brown, wavy; subterminal and terminal areas covered by dark-brown patches. Hindwing white; antemedial line brown, discontinuous; postmedial line double, with a black spot at middle; outer margin with two short tails; terminal line present as a small dot at M 3 - Cu 1.

Male genitalia (Fig. 18 View Figures 15–21 ). Uncus hook-shaped, sclerotized. Tegumen triangular. Gnathos present as two spikes. Valva bar-shaped, covered with dense hair; sacculus small, arcuate; editum-costa complex bifurcate, one branch short and finger-shaped, covered with long hair, other branch long and bar-shaped; cucullus rounded. Juxta membranous, chestnut-shaped. Vinculum V-shaped. Saccus V-shaped. Aedeagus bow-shaped. Vesica membranous, without cornuti.

Female genitalia (Fig. 25 View Figures 22–28 ). Papilla analis hoof-shaped, covered with short setae. Ostium bursae funnel-shaped, sclerotized. Ductus bursae long and slender. Corpus bursae oval, with a star-shaped signum.

Distribution.

China ( Xizang) (Fig. 40 View Figure 40 ), India, Nepal.

Remarks.

Warren (1896) placed this species in the genus Epiplema . However, it shares several typical characters with Eversmannia : (1) forewing ground color white; postmedial line double; crossvein extremely weak; (2) hindwing white; antemedial line discontinuous; postmedial line double; M 2 vestigial, forming crease; (3) editum-costa complex bifurcate; (4) corpus bursae oval.

Eversmannia fuscifrons comb. nov. can be easily distinguished from E. acutangularia . (1) The ground color of wings is white; in E. acutangularia is grayish brown. (2) The outer margin of forewing is smooth; in E. acutangularia it is dentate. (3) In male genitalia, the is gnathos present as two spikes and the editum-costa complex is bifurcate; in E. acutangularia , both the gnathos and editum-costa complex are absent. Consequently, we formally transfer this species to the genus Eversmannia .

The species is reported for the first time from China. The male genitalia are described for the first time. Inoue (1998) briefly compared the differences in female genitalia between E. bicaudata and E. fuscifrons .