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DEVELOPMENT AND REPRODUCTION OF THANASIMUS FORMICARIUS (L.) (COLEOPTERA: CLERIDAE) AT THREE CONSTANT TEMPERATURES

Published online by Cambridge University Press:  31 May 2012

Ye Hui  and
Alf Bakke
Ye Hui
Affiliation:
Institute of Ecology and Geobotany, Yunnan University, Kunming, P.R. China
Alf Bakke
Affiliation:
Norwegian Forest Research Institute, N-1432, AS-NLH, Norway
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Abstract

Thanasimus formicarius (L.), a main predator of bark beetles in Eurasia, was studied at constant temperatures of 15, 21, and 25 °C. Morphological data and duration of development are indicated for the egg (2.4 by 0.8 mm; 28–7 days at temperatures from 15 to 25 °C), three larval instars (9–14 days depending on instar and temperatures of 21 and 25 °C), pupa (15 and 33.5 days over the range of temperatures), and adult. Information is also given on head capsule size, sex ratio, fecundity, and length of adult life.

Résumé

Le développement de Thanasimus formicarius (L.) un prédateur important des scolytes en Eurasie, a été étudié à température constante, à 15, 21, et 25 °C. Des données sur la morphologie et la durée du développement sont présentées pour les oeufs (taille, 2,4 × 0,8 mm; durée du développement, 28–7 jours aux températures de 15 à 25 °C), pour les trois stades larvaires (9–14 jours selon le stade, aux températures de 21 et 25 °C), pour les nymphes (15 à 33,5 jours aux trois températures expérimentales) et pour les adultes. On trouvera également des indications sur la taille de la capsule céphalique, le rapport mâles : femelles, la fécondité et la longévité des adultes.

[Traduit par la Rédaction]

Type
Articles
Information
The Canadian Entomologist , Volume 129 , Issue 3 , June 1997 , pp. 579 - 583
Copyright
Copyright © Entomological Society of Canada 1997

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