Dvidulopsis diviantis Stonis & Diškus & Remeikis & Orlovskytė 2025, sp. nov.
Creators: name: Stonis, Jonas R.
name: Diškus, Arūnas
name: Remeikis, Andrius
name: Orlovskytė, Svetlana
Publisher: name: Zenodo
Year: 2025
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Nepticulidae
Dvidulopsis
Dvidulopsis diviantis

description: Dvidulopsis diviantis Stonis & Remeikis, sp. nov.
urn:lsid:zoobank.org:act: 11055433-CA46-4A13-8369-B060F08285E5
(Figs 3, 21–26)
Type material. Holotype: ♂, HONDURAS, Atlantída Department (the Caribbean coast), Tela, approx. 10 m, 15°45′56.78″N, 87°21′06.97″W, at light (25C), 3.iii.2024, leg. J.R. Stonis, genitalia slide no. RA1222 ♂ (MfN).
Diagnosis. Externally, Dvidulopsis diviantis sp. nov. can be confused with the similar, cream-scaled D. dividua, D. paradividua, and D. ecuadoriana. However, in the male genitalia, the new species differs from all currently known species of the genus by at least three unique characters: the massive, bilobed gnathos; the basally pointed phallus; and the short, widely triangular inner lobe of the valva.
Barcodes. We barcoded the male holotype specimen; the sequence is available in GenBank under the voucher/ sample ID: PV121131.
Male (Fig. 3). Forewing length 2.0 mm; wingspan 4.4 mm. (n = 1). Head: palpi and frons glossy cream; frontal tuft pale beige-orange; collar very indistinct, comprised of piliform scales; scape large, golden cream; antenna unknown (broken in the holotype). Thorax and tegula golden cream, glossy, with some scattered brown scales. Forewing golden cream, sparsely speckled with brown scales, with oblique subapical pseudofascia composed of blackish brown scales; fringe greyish cream on the tornus, golden cream apically; fringe-line absent; forewing underside densely speckled with brown to dark brown scales, without androconia. Hindwing and its fringe grey. Legs glossy cream, densely speckled with dark brown scales on the upper side.
Female. Unknown.
Male genitalia (Figs 21–25). Capsule significantly longer (300 μm) than wide (180 μm). Uncus clearly bilobed. Gnathos partially divided, with thickened slender lateral arms and a two-lobed main plate. Valva 160 μm long, with two lobe-like processes: median and smaller basal; transtilla with a slender transverse bar; sublateral processes long, slender, and straight. Juxta absent. Vinculum with large lateral lobes, anteriorly with a deep, round excavation. Phallus 225 μm long, strongly constricted basally, with three elongated carinae apically; vesica without cornuti.
Bionomics. Adults fly in March. Otherwise, the biology is unknown.
Distribution. This species is known from the lowland humid (moist) forests of northern Honduras (Caribbean coast, Atlántida Department), at an elevation of 10 m (Fig. 26).
Etymology. The name of the new species is an adjective derived from the combination of the Latin prefix “divi-” (related to the concept of division or separation) and the Latin suffix “-antis” (an ending commonly used to form adjectives that describe a state or action related to the root). The species name diviantis refers to the uniquely divided gnathos in the male genitalia of the new species.
description: Published as part of Stonis, Jonas R., Diškus, Arūnas, Remeikis, Andrius & Orlovskytė, Svetlana, 2025, Dvidulopsis gen. nov., a rare Neotropical genus of pygmy moths (Nepticulidae) endemic to lowland humid forests, a biome of conservation priority, pp. 583-599 in Zootaxa 5609 (4) on pages 589-592, DOI: 10.11646/zootaxa.5609.4.8, http://zenodo.org/record/15215526