Biology of the rice grain bug, Paraeucosmetus pallicornis (Dallas) (Hemiptera:Lygaeidae), a new emerging insect pest of rice

Issue Date

10-2013

Abstract

The biology of the rice grain bug, Paraeucosmetus pallicornis (Dallas), was studied under laboratory conditions at ambient temperature range of 28-30 ° C in clear bottles using string beans as diet. The eggs are laid singly under thin dry soil, transparent and measure 1mm long on the average. The incubation period ranges from 6 to 9 days. The durations of the 1st , 2nd, 3rd and 4th instar were 3-9 days (5.26 days, n= 100), 3-10 (5.06 days, n=54), 3-11 (5.79 days, n=34) and 4-11 (7 days, n=22) days, respectively. The total developmental period from egg to adult ranged from 35 to 39 days. The rice grain bug nymph has an ant-like appearance and black in color. The adult stage is longest, lasting for about twice that of the individual stages of post embryonic development. Full understanding on the biology of P. pallicornis led to the development of mass rearing technique under laboratory conditions.

Source or Periodical Title

The Philippine Entomologist

ISSN

0048-3753

Volume

27

Issue

2

Page

203

Document Type

Article

Frequency

semi-annually

Language

English

En – AGROVOC descriptors

INSECT PESTS; RICE; LIFE CYCLE; ANIMAL DEVELOPMENTAL STAGES; PESTS OF PLANTS

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