Table of content

Short horned grasshopper

Introduction of the Insect

Oxya japonica, also known as the Japanese grasshopper or rice grasshopper, is a species of short-horned grasshopper in the family Acrididae. It is found in Indomalaya and eastern Asia [1]. Basic diagnostic attributes include- antennae as long as or slightly longer than head and pronotum together. Lateral longitudinal ridges on ventral surface of female sub genital plate without spines except at apices. Ovipositor valves with short dents. Posterior ventral basivalvular sclerite with a large spine on its inner ventral margin, male cercus with sub-acute or truncate apex [2].

 

English name        Short horned grasshopper

Bangla name         [NO INFORMATION AVAILABLE]

Scientific name     Oxya japonica

Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Orthoptera
Suborder: Caelifera
Family: Acrididae
Genus: Oxya
Species: O. japonica

Binomial Name: Oxya japonica (Thunberg, 1815)
Subspecies:
Oxya japonica japonica (Thunberg, 1815)
Oxya japonica vitticollis (Blanchard, 1853)

India (Uttar Pradesh, Rajasthan, Tamil Nadu, Tripura, West Bengal, Gujarat, Bihar, Assam, Manipur, Karnataka, Kerala, Punjab), Nepal, Bangladesh, Myanmar, China, Indonesia: Bali; Sulawesi; Halmahera; North Maluku; Java; Kalimantan; Sumatra, Vietnam, Đảo Côn Sơn Island, Cù Lao Thu Island, Malaysia, Singapore, Japan, Pulau Islands, Thailand, Taiwan, Pulau Timor, Pulau Lombok, Pulau Sumba, Philippines, Papua, Papua New Guinea, Solomon Islands, Australia: Queensland, USA: Hawaii [2].

 

Host Range
It is a major pest of paddy crop.

Egg: [NO INFORMATION AVAILABLE]

Nymph: [NO INFORMATION AVAILABLE]

Adult: Colour: General body colouration dark brownish green; a black band start from each eye along superior margin of lateral lobe continuing upto episternum; tegmen with costal region slightly opaque; wings hyaline; hind tibia blue.
Head: Smooth; eyes oval; antenna filiform, with fine bristles; antenna slightly shorter than head and pronotum together; fastigium horizontal, apex rounded, smooth and gradually merging with frontal ridge; fastigium with concavity, frontal ridge almost parallel, sulcated; lateral carina straight, arising from base of ocelli; face with hairs.
Mesosoma: Pronotum smooth, finely punctured; median carina weak visible only in metazona; 4 transverse sulci present; first only on lateral lobes; pronotum with very fine sparse hairs; lateral lobes with more hairs; prozona almost equal to metazona; prosternal process conical slightly antero-posteriorly compressed with acute apex, hairy; mesosternal lobes separated by narrow space; metasternal lobes contiguous; meso-metasternal plate hairy; tegmen fully developed, extending beyond metasoma and hind femur; anterior margin weakly spined; appendages hairy; hind femur extends slightly beyond apex of metasoma; upper and lower area with few fine hairs; apical portion of hind tibia expanded; 9 external spines including apical spine and 10 internal spines on hind tibia.
Metasoma: Ovipositor valves with short dents; post- ventral basivalvular sclerite with a large spine on its inner ventral margin; subgenital plate with two longitudinal ridges on ventral surface with a spine at apex; posterior margin with a pair of median spines set close together.

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No natural enemies are recorded [2].

Due to the variable regulations around (de-)registration of pesticides, we are for the moment not including any specific chemical control recommendations. For further information, we recommend you visit the following resources:
•EU pesticides database (http://ec.europa.eu/food/plant/pesticides/eu-pesticides-database/)
•PAN pesticide database (www.pesticideinfo.org)
•Your national pesticide guide.

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