caa a22 4500 388035811 CHVBK 20180307125004.0 cr unu---uuuuu 161130e199802 xx s 000 0 eng 10.1017/S0007485300041584 doi S0007485300041584 pii (NATIONALLICENCE)cambridge-10.1017/S0007485300041584 Pear thrips Taeniothrips inconsequens (Thysanoptera: Thripidae) life history and population dynamics in sugar maple in Pennsylvania [Elektronische Daten] The pear thrips Taeniothrips inconsequens (Uzel) was sampled for four years in a small sugar maple Acer saccharum plantation in Centre County, Pennsylvania, USA. The life cycle of T. inconsequens was univoltine with the main period of emergence and flight from late March to mid May. Adults, eggs, and first and second instar larvae were associated with sugar maple budburst and early leaf development from late April to late May. Larval drop occurred from mid to late May. Mature second instar larvae, propupae, pupae and adults spent from June to March in the ground; development from larva to adult occurred between September and November. From March to May most (usually >90%) thrips adults and larvae sampled were T. inconsequens. No T. inconsequens males were found. In soil samples taken in spring, summer and autumn T. inconsequens were found to a depth of 50 cm but over 87% were in the top 20 cm. Almost no T. inconsequens were found in the litter layer. Large variations in T. inconsequens adult emergence and larval drop were recorded. The most important contributing factors in fluctuations of T. inconsequens populations were the length of sugar maple budburst, the degree of synchrony between thrips emergence and sugar maple budburst, and the occurence of sugar maple flowering. Copyright © Cambridge University Press 1998 Teulon D. A. J. New Zealand Institute for Crop and Food Research, Private Bag 4704, Christchurch, New Zealand Leskey T. C. Department of Entomology, University of Massachusetts, Amherst, MA 01003, USA Cameron E. A. Department of Entomology, Penn State University, University Park, PA 16802, USA Bulletin of Entomological Research Cambridge University Press 88/1(1998-02), 83-92 0007-4853 88:1<83 1998 88 BER https://doi.org/10.1017/S0007485300041584 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1017/S0007485300041584 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Teulon D. A. J. New Zealand Institute for Crop and Food Research, Private Bag 4704, Christchurch, New Zealand NATIONALLICENCE 700 1- Leskey T. C. Department of Entomology, University of Massachusetts, Amherst, MA 01003, USA NATIONALLICENCE 700 1- Cameron E. A. Department of Entomology, Penn State University, University Park, PA 16802, USA NATIONALLICENCE 773 0- Bulletin of Entomological Research Cambridge University Press 88/1(1998-02), 83-92 0007-4853 88:1<83 1998 88 BER CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge