Cucurbits are the most widely grown and important crops in the tropical and subtropical countries of the world. In Bangladesh, major vegetables grown in summer are cucurbits. Pumpkin beetle is the major pest and causes considerable damage to almost all cucurbits (Butani and Jotwani, 1984; Yawalkar, 1985). Among different species of pumpkin beetles, incidence of adult stage of red pumpkin beetle (RPB), Aulacophora foveicollis (Lucas) on different cucurbits have been reported by various workers (Nath, 1964; Nath and Thakur, 1965; Bogawat and Pandey, 1967). The pest, however, occurs throughout the year and causes severe damage to the crops, especially at the seedling stage (Alam, 1969; Butani and Jotwani, 1984). The adult beetles feed voraciously on the cucurbit leaf making irregular holes. They also attack cotyledons and flowers (Butani and Jotwani, 1984). The beetles may kill seedlings and sometimes the crops have to be resown 3-4 times (Azim, 1966). The grubs feed on roots and underground portions of host plants as well as fruits touching the soil and thus making such fruits unsuitable for human consumption (Butani and Jotwani, 1984). The pest, however, occurs throughout the year but they are active from March to October, though the peak period of activity is between April to June (Butani and Jotwani, 1984) and causes severe damage to the crops, especially at the seedling stage (Alam, 1969). It may cause up to 70% damage on leaves and 60% damage on flowers of cucumber (Alam, 1969). According to Nath and Thakur (1965), among the gourds, sponge gourd, was the least preferred by RPB, while the bottle gourd was most preferred and ridge gourd was intermediate in preference. Khan and Hajela (1987) found that RPB preferred sweet gourd followed by cucumber, squash melon, sponge gourd and bottle gourd. The environmental conditions though can not entirely change the genetic make up of a plant carrying resistance to insect pests, but they influence the biology of the pest considerably which in turn influences the population of the pest. According to Nath and Thakur (1965), relative humidity and temperature variations did not have significant influence on the susceptibility or resistance to RPB. Therefore, the present study was undertaken to find out the influence of weather factors on the incidence and population pattern of pumpkin beetle infesting cucurbits.