Three new species of Stictane Hampson, 1900 from Flores Island, eastern Indonesia (Lepidoptera: Erebidae: Arctiinae: Lithosiini)

The genus Stictane Hampson, 1900 (Lepidoptera: Erebidae: Arctiinae: Lithosiini) contains 31 species, the ranges of which extend from India and Sri Lanka to Japan, the Philippines, and Sulawesi (Holloway 2001; Bayarsaikhan & Bae 2015; Bayarsaikhan et al. 2019). The maximum species richness of this genus is supposedly situated in Cambodia, Malaysia, and on Borneo, although the number of sampling efforts and taxonomic works can bias this pattern (Holloway 2001; Bucsek 2012, 2014; Bayarsaikhan & Bae 2015; Bayarsaikhan et al. 2019). None Stictane species was known to occur on the East Nusa Tenggara Islands in eastern Indonesia. However, three diminutive and still undescribed species of this genus from Flores Island are presented in the collection of the Russian Museum of Biodiversity Hotspots [RMBH], N. Laverov Federal Center for Integrated Arctic Research of the Ural Branch of the Russian Academy of Sciences, Arkhangelsk, Russia. Here, we describe these species as Stictane miniursa sp. nov. [West Flores: Borong], S. berliosi sp. nov. [West Flores: Labuan Bajo], and S. pseudofuscus sp. nov. [Central Flores: Bajawa]. The specimens

Diagnosis. This species can be distinguished from all other congeners by having a specific shape of the male genitalia structure. It remotely resembles that of Stictane pectinata Holloway, 2001 but has a narrower valva and a longer saccular process (as long as the valva).
Etymology. The species' name means "small bear" in Latin, reflecting its small size and uniform "grizzly" coloration.
Distribution. This species is not known beyond its type locality (Borong) in West Flores.  Diagnosis. This species can be distinguished from all other congeners by having a specific uncus structure and three very large, leaf-like spikes in the vesica.
Etymology. The new species is named in memory of Louis-Hector Berlioz (1803-1869), a French Romantic composer.
Distribution. This species is not known beyond its type locality (Labuan Bajo) in West Flores.

Diagnosis.
Morphologically, the male genitalia of the novel species are somewhat similar to Stictane fuscus Bucsek, 2014. However, the new species can be distinguished from S. fuscus by the following combination of characters: larger and stronger distal process of the valva (vs smaller and narrower); irregular valva apex (vs. rounded); and valva with its distal process and distal saccular process of the same length (vs distal saccular process protrudes much further than the apex of valva' distal process).
Description. Male morphology: Wingspan 14 mm, forewing length 6 mm. Eye black. Antenna bipectinate, gray. Labial palpus very thin, gray. Head, thorax, patagium, tegula, legs, and abdomen gray. Upperside of the forewing: ground color light gray; three basal black spots; antemedial line broad, dark gray; two postdiscal black spots followed by a dashed postmedial black line; dashed black line along termen. Upperside of the hindwing and underside of both wings gray. Male genitalia: Uncus long; tegumen vshaped; saccus u-shaped. Valva long, with straight distal process apically; distal saccular process very large. Aedeagus broad; vesica with one very large, leaf-like, slightly curved spike with rounded base, other leaflike spike of moderate size, and a rhombus-shaped sclerotized area. Female: Unknown.
Etymology. The species' name indicates that it bears an external resemblance to S. fuscus. Distribution. This species is not known beyond its type locality (Bajawa) in Central Flores.