Nacaduba berenice plumbeomicans (Wood-Mason & de Niceville, 1881)

KC, Sajan, Pariyar, Surendra & Sapkota, Anisha, 2025, Refining Nepal's butterfly records: self-corrections and notes on previously recorded Papilionoidea (Lepidoptera) species, Journal of Insect Biodiversity and Systematics 11 (2), pp. 363-377 : 368

Nacaduba berenice plumbeomicans (Wood-Mason & de Niceville, 1881)

Lampides plumbeomicans Wood-Mason & de Nicéville, 1881 , Type locality: Andamans.

Material Examined. 1 ♂, NEPAL, Bhedetar, Dhankuta District , Koshi Province (26°52'40.8"N 87°20'01.7"E, 610 m), 13-XI-2021, Coll. Sajan KC ( Figs 3E, 3F) .

Diagnosis. This species resembles the more widespread N. kurava euplea Fruhstorfer, 1916 , in Nepal but can be differentiated by a combination of distinguishing characters. Nacaduba berenice plumbeomicans has opaque dorsal wings with a frosted appearance in males, in contrast to the quasi-transparent wings of N. kurava ; additionally, in N. berenice , the postdiscal band at space 4 on the ventral forewing is dislocated rather than continuous, and the white striae on the ventral wings are duller than those in N. kurava euplea ; furthermore, the forewing termen is convex with a rounded apex in both sexes, compared to N. kurava and N. beroe (C. & R. Felder, [1865]), where the forewing termen from spaces 2–6 is straight in males, with the apex produced ( Evans, 1932, Corbet & Pendlebury, 1956, Sadasivan et al., 2021).

Remarks. Recorded as a species new to Nepal by the first author in KC (2022), N. berenice plumbeomicans was seen for the first time on March 8, 2021, in Bhedetar, Dhankuta District at 732 m elevation (26°52'36.0"N 87°19'50.0"E); a male specimen was subsequently captured on November 13, 2021, from the same location along the riverside ( Figs 3E, 3F) for further study and verification. Analysis of the male genitalia revealed a serrated distal end of the valva ( Fig. 3G), in contrast to the hooked shape observed in N. kurava (see Sadasivan et al., 2021, and Inayoshi, 2024). Major surrounding vegetation of the study area included Castanopsis indica , Schima wallichii , and Shorea robusta .

Distribution. S. India, NE India, Andaman and Nicobar Islands ( Varshney & Smetacek, 2015); SE Bangladesh ( Van Gasse, 2018); Nepal (New Record).