We deployed branch traps in an ash (Fraxinus) plantation to investigate how Agrilus planipennis behavior is associated with Fraxinus pennsylvanica condition and dispersal patterns. Data were collected from traps with or without the presence of beetle visual decoys, and from a yearly survey of exit holes. The traps were placed on trees that were either clearly declining, with most foliage arising from epicormic sprouting, or on apparently healthy trees, with little evidence of damage or decline. We calculated correlations of exit holes among neighboring tree rings and also between exit holes and male trap captures. The damaged trees the traps were hung upon had more cumulative exit holes observed than the corresponding healthy trees. However, there was otherwise no evidence that the experiment was biased by differences in exit hole patterns of the surrounding trees. Male captures were greater on decoy-baited traps than controls and this decoy effect was most clearly apparent late in the season when traps were placed on healthy trees. There were also patterns of correlations between male captures and exit hole numbers that may be indicative of short-range mate finding-and dispersal behaviors. Female captures were sparser, but were positively affected by decoys on healthy and declining trees early in the season. Thus, the results suggest that the placement of such traps on healthier trees will maximize detection, and the branch traps also show promise for further use in dispersal studies., Michael J. Domingue, Jennifer Berkebile, Kim Steiner, Loyal P. Hall, Kevin R. Cloonan, David Lance, Thomas C. Baker., and Obsahuje bibliografii
V příspěvku je popsán objev larvy jednoho z nejtajemnějších krasců Austrálie – Julodimorpha saundersii. Díky objevu larvy bylo vyjasněno taxonomické postavení rodu na základě srovnávací, larvální morfologie. Nehledě na morfologickou podobnost dospělců rodů Julodimorpha a Julodis (podčeleď Julodinae) bylo na základě larválních znaků potvrzeno, že rod Julodimorpha je samostatným primitivním tribem podčeledi Buprestinae. Objev larvy tohoto rodu je typickým příkladem náhody, která je někdy nutná i při vědeckém zkoumání. Další příklad takové výjimečné náhody je ilustrován na objevu larvy dalšího krasce, Coomaniella violaceipennis z Thajska, jehož larvy se vyvíjejí v korunových liánách pralesních velikánů., The discovery of the larva of one of the most enigmatic Australian Buprestid beetles, Julodimorpha saundersii, is briefly discussed. The taxonomic position of the genus has been clarified using comparative larval morphology. Regardless of the morphological similarity of the adults with the genus Julodis (subfamily Julodinae), the larval characteristics of the genus Julodimorpha confirmed its placement as an independent, primitive tribe of the subfamily Buprestinae. Another example of good luck in scientific research is described, concerning buprestid beetle Coomaniella violaceipennis from Thailand, larvae of which are borers in the canopy climbers., and Svatopluk Bílý.