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Specimens of Leptocoris rufomarginatus (Fabricius) (Serinethinae) were collected in Dong Nai Province, north-northeast of Ho Chi Minh City. This collection was some 700 km away from their nearest recorded locality (Sumatra). Some variation in color patterns is recorded. In addition, one specimen of L. rufomarginatus was also collected in Songkhla Province in Thailand. These two are both country records. In Guam, Leptocoris vicinus (Dallas) was collected, and some notes on feeding were recorded.
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Schaefer et al. (2009) studied this question.
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