Biological aspects of Acrosternum apicicorne (Spinola, 1862) (Hemiptera, Pentatomidae)
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In this paper, biological aspects of Acrosternum apicicorne were studied under laboratory conditions (temperature = 23.5 ± 0.8°C; relative humidity = 68.4 ± 6.5%; photoperiod = 16 h). Insects were fed with fresh fruits of Phaseolus vulgaris (L.). Under such conditions, the following results were obtained: life cycle length = 45.3 ± 4.7 days; nymphal mortality = 49 ± 23.3%; adult longevity = 97.3 ± 1.3 days; number of eggs per female = 115.6 ± 67.6.
Under laboratory conditions, compared to other pentatomids such as Nezara viridula (L.) and Piezodorus guildinii (West.), A. apicicorne showed a reproductive ability lower than Nezara and higher than Piezodorus. Laboratory observations were complemented with field observations. The latter showed that A. apicicorne populations are not only sporadic but also low.
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