BIOLOGICAL STUDIES OF BUD MINING SAWFLIES, PLERONEURA SPP. (HYMENOPTERA: XYELIDAE), ON WHITE FIR IN THE CENTRAL SIERRA NEVADA OF CALIFORNIA: III. MORTALITY FACTORS OF EGG, LARVAL, AND ADULT STAGES AND A PARTIAL LIFE TABLE
- 1 August 1979
- journal article
- Published by Cambridge University Press (CUP) in The Canadian Entomologist
- Vol. 111 (8), 883-888
- https://doi.org/10.4039/ent111883-8
Abstract
The mortality factors for three species of Pleroneura were identified for the egg, larval, and adult stages. Allophroides n.sp. and Scambus transgressus (Hymenoptera: Ichneumonidae) were observed parasitizing the larval stages and four spiders were found preying on Pleroneura adults. Quantitative assessments of mortality in the egg and larval stages were made and tabulated in the form of a partial life table. Allophroides n. sp. was the dominant mortality factor in the larval stage. Mortality of unknown cause also was a substantial mortality factor.Keywords
This publication has 2 references indexed in Scilit:
- BIOLOGICAL STUDIES OF BUD MINING SAWFLIES, PLERONEURA SPP. (HYMENOPTERA: XYELIDAE), ON WHITE FIR IN THE CENTRAL SIERRA NEVADA OF CALIFORNIA: II. LARVAL DISTRIBUTION WITHIN TREE CROWNSThe Canadian Entomologist, 1978
- BIOLOGICAL STUDIES OF BUD MINING SAWFLIES, PLERONEURA SPP. (HYMENOPTERA: XYELIDAE), ON WHITE FIR IN THE CENTRAL SIERRA NEVADA OF CALIFORNIA: I. LIFE CYCLES, NICHE UTILIZATION, AND INTERACTION BETWEEN LARVAL FEEDING AND TREE GROWTHThe Canadian Entomologist, 1977