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21.
by ANTHONY BUTCHER 《Palaeontology》2009,52(3):593-629
Abstract: Chitinozoans recovered from cores BG-14 and WS-6 in southern and eastern Jordan are described. Sample ages are well-constrained by graptolite data to the ascensus-acuminatus and vesiculosus graptolite biozones. Eighteen chitinozoan taxa are recognized, with Spinachitina fragilis , Plectochitina nodifera , Ancyrochitina laevaensis and Belonechitina postrobusta allowing correlation with both local and global chitinozoan and graptolite biozonations for the Rhuddanian. One new species of chitinozoan is erected, Belonechitina pseudarabiensis sp. nov. 相似文献
22.
A. AEBI N. ALVAREZ R. D. J. BUTCHER C. HANSSON A. M. RISTERUCCI B. BENREY 《Molecular ecology resources》2004,4(4):707-709
Parasitoids of the genus Horismenus (Hymenoptera: Eulophidae) are the main natural enemies of bruchid beetles that feed on several species of Phaseolus beans. Samples of Horismenus depressus, H. missouriensis and H. butcheri were collected from seeds of three Phaseolus species throughout Mexico to examine the impact of plant variability on the genetic structure of parasitoid populations. For this purpose, six microsatellite loci were isolated and characterized. These loci are of great interest in understanding the taxonomy of the genus Horismenus, the most important Eulophid genus in the Neotropics. 相似文献