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.
ABD-ALLAH, F. F., & TADROS, A. W. (1995). BIOLOGICAL ASPECTS ON ENNEADESMUS TRISPINOSUS OLIVIER (COLEOPTERA: BOSTRICHIDAE) ON DATE PALM LEAVES IN EGYPT. Egyptian Journal of Agricultural Research, 73(2), 389-395. doi: 10.21608/ejar.1995.433436
MLA
FATHY F. ABD-ALLAH; ANTWAN W. TADROS. "BIOLOGICAL ASPECTS ON ENNEADESMUS TRISPINOSUS OLIVIER (COLEOPTERA: BOSTRICHIDAE) ON DATE PALM LEAVES IN EGYPT", Egyptian Journal of Agricultural Research, 73, 2, 1995, 389-395. doi: 10.21608/ejar.1995.433436
HARVARD
ABD-ALLAH, F. F., TADROS, A. W. (1995). 'BIOLOGICAL ASPECTS ON ENNEADESMUS TRISPINOSUS OLIVIER (COLEOPTERA: BOSTRICHIDAE) ON DATE PALM LEAVES IN EGYPT', Egyptian Journal of Agricultural Research, 73(2), pp. 389-395. doi: 10.21608/ejar.1995.433436
VANCOUVER
ABD-ALLAH, F. F., TADROS, A. W. BIOLOGICAL ASPECTS ON ENNEADESMUS TRISPINOSUS OLIVIER (COLEOPTERA: BOSTRICHIDAE) ON DATE PALM LEAVES IN EGYPT. Egyptian Journal of Agricultural Research, 1995; 73(2): 389-395. doi: 10.21608/ejar.1995.433436
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