BIOLOGICAL ASPECTS ON ENNEADESMUS TRISPINOSUS OLIVIER (COLEOPTERA: BOSTRICHIDAE) ON DATE PALM LEAVES IN EGYPT | ||||
| Egyptian Journal of Agricultural Research | ||||
| Article 9, Volume 73, Issue 2, June 1995, Page 389-395 PDF (1.62 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/ejar.1995.433436 | ||||
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| Authors | ||||
| FATHY F. ABD-ALLAH; ANTWAN W. TADROS | ||||
| Plant Protection Research Institute, Agricultural Research Centre, Dokki, Giza, Egypt | ||||
| Abstract | ||||
| In Egypt, the powder post beetle, Enneaclesmus trispinosus Olivier (Coleoptera : Bostrichidae) is a harmful pest to the midrib of date palm leaves. The description, behaviour and duration of each stage with the total life-cycle and annual generations were studied. The egg, larval, pupal and adult stages lasted 7-14, 85-288, 10-18 and 13-39 days, respectively. The respective pre-oviposition, oviposition and postoviposition periods were 8-13, 2-25 and 0-6 days and the female laid 439 eggs. The total life-cycle was completed in 118-302 days, and female laid 4-302 days, and accordingly, the pestglhost probably undergoes two overlapping generations each year. | ||||
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