Boarmia ceylonaria is the original scientific name given to a species of moth. This name was established by Francis Walker in 1860. In modern taxonomy, Boarmia ceylonaria is widely considered a synonym for, or has been reclassified as, Ascotis ceylonaria. The species belongs to the Geometridae family, commonly known as geometer moths or loopers, due to the characteristic looping locomotion of their larvae.
Taxonomy
- Kingdom: Animalia
- Phylum: Arthropoda
- Class: Insecta
- Order: Lepidoptera
- Family: Geometridae
- Subfamily: Ennominae
- Genus: Ascotis (formerly Boarmia)
- Species: Ascotis ceylonaria (Walker, 1860)
Description
Ascotis ceylonaria is a medium-sized moth with a wingspan typically ranging from 40 to 50 millimeters. The wings are generally pale grey or whitish-grey, often mottled with darker grey, brown, or black markings that provide camouflage against tree bark. The forewings usually feature distinct antemedial and postmedial lines, which can be wavy or serrated, and a prominent discal spot. Similar markings, including a discal spot and a postmedial line, are typically present on the hindwings. Slight sexual dimorphism may be observed, particularly in the antennae, which are usually bipectinate (comb-like) in males and filiform (thread-like) in females.
Distribution
This species is native to the Indo-Malayan realm. Its primary distribution includes Sri Lanka (formerly Ceylon, hence the specific epithet ceylonaria), India, and extends into various parts of Southeast Asia, including Taiwan, Borneo, Sundaland, and New Guinea. It is commonly found in a range of habitats, from forested areas to more open woodlands and cultivated lands.
Ecology
Ascotis ceylonaria is a nocturnal species, attracted to light sources. The larvae are polyphagous, meaning they feed on a wide variety of plants from different families. Known host plants include species from Rubiaceae (e.g., Ixora), Fabaceae (e.g., Acacia), Euphorbiaceae, Malvaceae, and others. Due to its generalist feeding habits, the species can occasionally be noted as a minor pest in forestry or agricultural settings, though it is not typically considered a major threat. Like other geometer moths, the larvae are often referred to as "loopers" or "inchworms" due to their characteristic movement, which involves drawing the posterior end of the body up to the anterior end, forming a loop.