Anomis sabulifera

Anomis sabulifera, the angled gem or jute semi-looper, is a moth of the family Erebidae. The species was first described by Achille Guenée in 1852. It has a Paleotropical distribution and ranges from Africa eastwards to India, Sri Lanka and Australia. A single record was found from Britain.[1]

Angled gem
From South Africa
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Lepidoptera
Superfamily: Noctuoidea
Family: Erebidae
Subfamily: Scoliopteryginae
Genus: Anomis
Species:
A. sabulifera
Binomial name
Anomis sabulifera
Guenée, 1852
Synonyms
  • Gonitis sabulifera Guenée, [1852]
  • Gonitis propingua Butler, [1884]
  • Gonitis marginata Holland, [1894]

Description

Its wingspan is about 32–38 mm. The antennae of the male is ciliated. Antemedial line of forewings bent outwards between vein 1 and inner margin. The postmedial line incurved beyond the cell. It has diffused black on the antemedial line of forewings and between postmedial and sub-marginal lines. A small orbicular spot usually present and tow specks conjoined into a reniform spot.[2]

Ecology

There are multiple generations per year. The larvae mainly feed on species of the families Malvaceae and Tiliaceae. Recorded food plants include Althaea spp., Abelmoschus esculentus, Hibiscus tiliaceus, Commersonia bartramia, Corchorus capsularis Corchorus olitorius, Gossypium spp., Grewia occidentalis, and Triumfetta rhomboidea.[3]

Attack and control

It is a major pest of jute throughout the world.[4] Fruits, growing seedlings, leaves and seeds are mostly affected by the caterpillars and adults as well. They externally feed on the plant parts leading to dieback, chlorosis and reduction of harvest. The whole plant may result dwarf after excessive infection. The first attack symptoms can be seen in the shoot apex region.

Biological controlling methods are extensively used. No indication of chemical usage reported in the fields. In early times, predatory birds such as cuckoos of the family Cuculidae are used, but not known today. The spores of Bacillus thuringiensis and Beauveria bassiana are known to effective. Beauveria bassiana should mix with potato dextrose broth and amino acid solutions prior to in usage. In Bangladesh, inoculation with nuclear polyhedrosis virus controlled 80 percent of the attack.[5]

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References
  1. "72.0011 BF2471 Angled Gem Anomis sabulifera (Guenée, 1852)". UKMoths.
  2. Hampson, G. F. (1894). The Fauna of British India, Including Ceylon and Burma: Moths Volume II. Taylor and Francis – via Biodiversity Heritage Library.
  3. "Anomis sabulifera (Guenée, 1852)". African Moths.
  4. "Anomis sabulifera (Guenée)". ICAR-National Bureau of Agricultural Insect Resources.
  5. "Jute semi-looper (Anomis sabulifera)". Plantwise Knowledge Bank.


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