(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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Leptocorisa acuta has not been found in the U. Nymphs are mostly pale yellow-green and have long antennae. Intrinsic rate of natural increase of gundhi bug, Leptocorisa varicornis F.

ReevesUniversity of Florida. Management Back to Top Cultural: Leptocorisa acuta Thunberg Insecta: Laboratory and afuta studies of a natural attractant of the rice pest, Leptocorisa acuta Hemiptera, Coreidae. Flowering rice is the preferred host.

Leptocorisa acuta (rice seed bug)

Populations tend to increase during the flowering stage of the rice crop, which coincides with warmer weather. Heteroptera of Economic Importance. After days, adults of both sexes are fully mature. Damage Back to Top Rice bugs feed by inserting their needlelike mouthparts into new leaves, tender stems and developing grains. It is believed that after the rice is harvested, the bugs overwinter in wild grasses or other grass crops.

They do not bore a hole through the rice hull but enter the grain through the space between the lemma and the palea. Malaysia Ministry of Agriculture and Lands.


Lsptocorisa Journal of Entomology, 52 4: The rice bug, Leptocorisa acuta Thunb. Description Back to Top Leptocorisa acuta adults are crepuscular active during the early morning and late afternoon. Observations on a predator of Gundhy bug Leptocorisa varicornis Fb. Yellow spots appear on the leaves due to excessive sucking.

Leptocorisa acuta, Rice earhead bug, Paddy stink bug

Flooding is effective in killing rice bug eggs, as well as driving adults to the tops of the rice plants where they are more easily targeted with pesticides.

This is because the bug requires a wild host to feed and reproduce upon before accuta into the rice field in early spring. A degree-day simulation model for the population dynamics of the rice bug, Leptocorisa acuta Thunb.

Leptocorisa acuta is known to transmit Sarocladium oryzae and Sarocladium attenuatum fungithe cause of sheath leptcoorisa disease. Each nymphal instar looks remarkably similar to the one before it, except each successive nymph is larger than the last and wing pad enlargement occurs. The rice bug Leptocorisa varicornis.

rice bug – Leptocorisa acuta

Journal of Applied Entomology Insect pests of rice in the Philippines. Collection and destruction of the bugs by netting or in light traps can be done in smaller areas. Distribution Maps Top of page You can pan and zoom the map.

Rice bug, Leptocorisa varicornis and allied species. These bugs prefer to feed when the host plants are young, at a time when avuta starches within the grains are not yet fully formed. Coreidae-Hemipteraa pest of Paddy Crop in India. Taxonomic Tree Top of page Domain: For further information, we recommend you visit the following resources: Leptocorisa acuta Thunberg can be found on many crop plants in the family Poaceae grassesespecially rice, and is a reported pest of economic significance zcuta rice-producing countries like India, Australia, and China Schaefer and Panizzi Distribution Table Top of page The distribution in this summary table is based on all the information available.


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. Rice seed bug Leptocorisa acuta adults are crepuscular active during the early morning and late afternoon. They are a light yellow-green to yellow-brown color Figure 1. Some Leptocorisa species are destructive and cause significant damage to rice throughout their range Cendana and Calora, Resistance to benzene hexachloride of rice bug, Leptocorisa varicornis F.

Role of Leptocorisa acuta Thun.

Catling, ; EPPO, Tropical Pest Management The removal of liquid milky-white endosperm results in a smaller grain. See Srivastava and Saxena