Chabula trivitralis ( Swinhoe, 1895 )

Rao, B. Sumit Kumar & Sivaperuman, Chandrakasan, 2025, Contribution to the knowledge of Pyraloid moths (Lepidoptera, Pyraloidea) from the Andaman and Nicobar Islands, India, Journal of Insect Biodiversity and Systematics 11 (1), pp. 129-149 : 134

Chabula trivitralis ( Swinhoe, 1895) ( Figs 2D, 4D, 5D)

Chabula trivitralis Swinhoe, 1895:302–303 . TL: India (Shillong).

Synclera fenestralis Warren, 1896:105 . TL: India (Khasi Hills).

Material examined. 3♂♂, INDIA, Andaman and Nicobar Islands, Diglipur, Bahadur Tikrey , 08-I-2019, coll. B. Sumit Kumar Rao (Reg. No. ZSI / ANRC /T-17339, T-17340, T-17341) .

Diagnosis. Wingspan 10–11 mm in Male. Chabula trivitralis can be distinguished from its congeners by the pale-yellow ground colour of its wings, numerous brown stripes on the forewings, a thick transverse medial band, a white transparent wing window near the leading edge, and two white patches on the postmedial area forming a disrupted "B" shape. The hindwing markings are similar to those of the forewing, and the outer margin has a dark brown line.

Distribution. Korea, Taiwan, Japan, Sri Lanka, India (northeastern states of Meghalaya and Assam) ( Gupta, 1994; Shibuya, 1928).

Remarks. This study documents the first occurrence of Chabula trivitralis in the Andaman group of islands, previously known only from the Nicobar group ( Chandra, 1996; Rao & Sivaperuman, 2020). This significant range extension within the Andaman and Nicobar archipelago underscores the dynamic nature of species distributions in island ecosystems. Representative individuals of this species were observed in traps placed in the secondary forest margins of the North Andaman.