(Hemiptera: Coreidae) Host:This pest feeds on a variety of graminaceous plants, e.g. rice, wheat, sugarcane, maize, millets, bajra etc. Flowering rice is the. PDF | On Jan 1, , M A R A Mandanayake and others published OCCURRENCE OF LEPTOCORISA ACUTA (THUNBERG) (HEMIPTERA. Leptocorisa acuta (Thunberg). Taxonomic position. Insecta: Hemiptera: Heteroptera: Alydidae. Common names. Rice earhead bug, paddy bug. Habitat / Crop(s).

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Close Find out more. Female can lay eggs in its lifetime. Illustrated guide to integrated pest management in rice in tropical Asia. The fourth antennal segment is curved and longer than the third segment Corbett Catling, ; EPPO, Feeding enzymes and micro-organisms enhance feeding damage Srivastava and Saxena, Current Science, 45 This reduces photosynthesis and, in extreme cases, can damage the vascular system of the plant.

Insecticidal control of Eysarcoris trimaculatus Distant Heteroptera: This is to ensure that we give you the best experience possible. Nymphs are greenish, slender and similar to the adults in appearance and sucking habit.

The use of late-maturing cultivars can reduce feeding damage from the rice bug, as their activity corresponds with warm weather and the elptocorisa stage of host grasses. Sands, ; EPPO, Upon adult emergence in the spring, rice bugs feed on wild host plants for one or two generations before migrating into rice fields.

It is thought that rice in the flowering stage is the preferred host.

Further details may be available for individual references in the Distribution Table Details section which can be selected by going to Generate Report. Eggs are deposited in single or double rows of 10 to 20 on the upper surfaces of the leaves of the host plant. Knowledge Bank home Change leptoccorisa.

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Rice Entomology Newsletter, No. The distribution in this summary table is based on all the information available. Specific differences in immature stages, oviposition sites and hatching patterns in two rice pests, Leptocorisa oratorius Fabricius and L.

Laboratory and field studies of natural attractant of the rice pest, Leptocorisa acuta Hemiptera, Peptocorisa. Asian rice bug; paddy bug; paddy fly; rice bug; rice sappers Spanish: Sheath rot disease damages the panicle branched arrangement of flowers of the rice plant, which causes the plant to produce under-developed or damaged rice grains.

Corbett indicated that nymphs and adults may be attracted to trap crops of grasses or early-planted rice and the insects can be collected before the flowering of the main leptocorlsa.

paddy bug, Leptocorisa acuta Hemiptera: Alydidae

Distribution Maps Top of page You can pan and zoom the map. Waterhouse, ; EPPO, A week following oviposition, the eggs hatch, and within hours the nymphs begin feeding Corbett According to Schaefer and Panizzifemales lay up to eggs over their life time. Resistant Acyta Varieties Certain coarse-grain-yielding, bearded varieties such as ‘Sathi’ ‘Soma’ and ‘Mundagakutty’ in India are resistant to attack.

Adults are usually acutq in aggregations. The rice bug, Leptocorisa acuta Thunb.

When leltocorisa accumulate, the plant becomes stressed, which can lead to growth retardation of the grains and some grain and plant deformation. Like all true bugs, they have piercing-sucking mouthparts that puncture the substrate they are feeding on, which can damage plant tissue and reduce grain yields. The ability of the insects to survive on weeds and grasses around paddy fields, especially during the off-season, poses a major problem for control strategies.


Such damage causes discoloration of the grains, which reduces market quality. It is believed that after the rice is harvested, the bugs overwinter in wild grasses or other grass crops.

Generate a print friendly version letocorisa only the sections you need. CamusCrow-foot grass Dactyloctenium aegyptium L. Other important hosts include many well-known weeds, such as millet Echinocloa spp.

Eggs are attached to the leaf by an adhesive substance secreted by the female during oviposition. Leptocirisa noted that adults can disperse by flying from plant to plant in a field, but do not appear capable of sustained flight.

Their feeding activity can result in partially filled or empty grains.

Leptocorisa acuta, Rice earhead bug, Paddy stink bug

Rice bug, Leptocorisa varicornis and allied species. Populations tend to increase during the flowering stage of the rice crop, which coincides with warmer weather. An adult rice bug, Leptocorisa acuta Thunburg. The rice bug Leptocorisa and its control leptockrisa West Malaysia.

They are diurnal but most active during morning and evening when they look for the flowering crops. Journal of Applied Entomology Taxonomic Tree Top of page Domain: The biology and ecology of Leptocorisa Hemiptera: Straits Settlements and Malaya States Sci.