Bellulia tenebrosa Han & Kononenko 2021, sp. n

Bellulia tenebrosa sp. n. (Figs 2, 18) Type materials. Holotype: male, Cambodia, Prov. Mondul Kiri, Seima Biodiversity Conservation Area, 1- 3.vii.2011, Y.S. Bae et al., genit. prep. hhl-3720-1, coll. NEFU. Paratype: 1 male with same data as holotype, genit. prep. hhl-3724, coll. INU. Diagnosis. This species is superficially is similar to B. kareni (Fig. 1), but can be distinguish by the following characters: the forewing is rather broad (much narrover in B. kareni); the basal line is distinct (in B. kareni it presents only on the costal margin); the antemedial line is broad and waved (in B. kareni it is smoothly curved); postmedial line bears big costal marks (in B. kareni with small costal blackish-brown mark); subterminal line broad, with grains (in B. kareni it is thin and smooth); the hindwing is less darker than forewing (in B. kareni ratherit is lighter than forewing, with weakly metallic luster). In the male genitalia of B. tenebrosa (Fig. 18) the tegumen much broader than in B. kareni the ventral part of the tegumen is fused to the fultura superior bearing a prominent, log-like processes on each side which are thinner than in B. kareni (Fig. 17); in the right valva the process of costa is short and straight, cone-shaped, protrudes from the exterior half of the costa (in B. kareni it is horn-shaped, protrudes from the medial part of the costa); the sacculus is apically rounded (in B. kareni it is a narrow liguliform process); the aedeagus narrower than in B. kareni and B. clara (Fig. 19). Description. Adult (Fig. 2). Wingspan 9-10 mm. Head and thorax yellowish grey, mixed with yellow scales on patagium; abdomen yellowish grey, with yellow terminal part. Forewing grey to yellowish grey; basal line greyish brown; antemedial line dark greyish brown, mixed with black, waved at discal cell and near 1A+2A; median line absent; postmedial line greyish brown, slender, with blackish brown speck on costal area, arched and slightly waved; subterminal line brown, broad, incurved from costal margin to M3, then slightly waved, oblique interiorly; terminal line a row of small brown dots; fringe yellowish grey; basal area yellowish brown; subterminal area dark yellowish brown, with black scales; reniform spot yellowish white, with small and black to dark blackish brown dot. Hindwing dark yellowish grey to yellowish brown; discal spot darkly tinged; outer margin slightly incurved; fringe greyish yellow. Male genitalia (Fig. 18). Tegumen narrow, about twiceas long as vinculum,; ventrally fused to fultura superior, with prominent, stick-like, apically rounded process, fused on both sides, the left one shorter than right. Vinculum slender, V-shaped. Saccus short, V-shaped. Juxta eye-shaped, sclerotized, with full circle opening on left side in upper part. Valva broad, asymmetrical, left one narrower than right; sacculus asymmetrical, left sacculus narrow, about half length of valva, right one shorter than left, smoothly rounded apically; process of sacculus slender, straight; ampullae asymmetrical,, smoothly curved, right one larger than left, with heavy setae; process of costa in right valva short and straight, cone-shaped, protrudingfrom apical half of costa. Aedeagus with coecum about 1/6 as long as entire aedeagus; its basal third straight, distal two-thirds hardly curved, gradually tapered, rounded apically, slightly swollen at ductus ejaculatorius., Female genitalia. Unknown. Etymology. The species name derived from the Latin word “ tenebris ” (dark) and refers to colouration of the adult in the B. kareni species-group. Distribution. Cambodia (Prov. Mondul Kiri: Seima Biodiversity Conservation Area). The species was collected in the tropical rainforest zone.
Published as part of Han, Hui Lin & Kononenko, Vladimir S., 2021, Six new species of the genus Bellulia Fibiger, 2008 from China and Cambodia (Lepidoptera, Erebidae, Hypenodinae). Taxonomic study of Micronoctuini Contribution III, pp. 117-130 in Zootaxa 4938 (1) on pages 118-120, DOI: 10.11646/zootaxa.4938.1.6, http://zenodo.org/record/4561447
{"references":["Fibiger, M. (2008) Revision of the Micronoctuidae (Lepidoptera: Noctuoidea). Part 2, Taxonomy of the Belluliinae, Magninae, and Parachrostiinae. Zootaxa, 1867 (1), 1 - 136. https: // doi. org / 10.11646 / zootaxa. 1867.1.1","Fibiger, M., Han, H. L. & Kononenko, V. S. (2011) Five new species and one new subspecies of Micronoctuidae from China, with a checklist of Chinese species, including Taiwan (Lepidoptera: Noctuoidea, Micronoctuidae). Zootaxa, 2777 (1), 41 - 53. https: // doi. org / 10.11646 / zootaxa. 2777.1.3"]}