Abstracts - Deutsche Zoologische Gesellschaft

210 Zoological Systematics PostersP ZS.11 - ENA molecular phylogeny and biogeographical scenario of the hawkmoth genus Hyles(Lepidoptera: Sphingidae, Macroglossinae)Anna K. Hundsdoerfer 1 , Ian J. Kitching 21DNA-Laboratory, Museum of Zoology, State Natural History Collections Dresden; 2 Departmentof Entomology, The Natural History Museum, London, UKThe hawkmoth genus Hyles is one of 15 genera in the subtribe Choerocampina of the subfamilyMacroglossinae. The twenty-nine species are found mostly in the southern Palaearctic region, butthere are representatives on most continents and major island groups. Due to a remarkable uniformity,morphological characters usually used to identify and classify Lepidoptera at the species levelcannot be used in this genus. Instead, we used DNA sequences comprising about 2300 bp derivedfrom the three mitochondrial genes COX I, COX II, and tRNA-leucine and about 700 bp from thenuclear gene EF1alpha to study the phylogeny of Hyles. The results corroborate the monophyly ofHyles but conflict with previous internal classifications of the genus based on morphology. Hylesseems to have diverged from its sister group in the Neotropics during the Oligocene/Eocene epochs.The colonisation of Madagascar and Australia seem to have occurred very early in Hyles radiation,although the route is uncertain. Depending on the assessment of the rate of molecular evolution,there are also alternative routes for the invasion of the Palaearctic. A common characteristic of theHyles euphorbiae complex is that they rely on Euphorbia foodplants, which contain toxic phorbolesters. Comparison of the phylogeny with food plant affiliations leads us to hypothesize that Euphorbiamonophagy evolved at least two times independently within Hyles.P ZS.12 - ENPretarsal structures of camel-spiders: new characters for the systematics of Solifugae(Arachnida)?Anja Elisabeth Klann, Gerd AlbertiZoologisches Institut & Museum, Ernst-Moritz-Arndt-Universität GreifswaldSolifuges, also called camel-spiders, live mainly in tropical and subtropical regions preferably inarid ecosystems. The current classification recognizes 12 families, 140 genera and 1075 species.The most comprehensive taxonomic treatment of the order Solifugae was done by Roewer but thishas been constructively criticized by various authors due to his reliance on considerably variablecharacters such as spine-like leg setae on which Roewer based much of his taxon delineation. Pretarsalstructures of the walking legs have neither been studied in detail from the point of functionalmorphology nor been taken into account in current classifications of Solifugae. In the present study,representatives of the families Ammotrechidae, Daesiidae, Eremobatidae, Galeodidae, Gylippidae,Karschiidae and Solpugidae were studied by means of scanning electron microscopy. There is arelatively high variation of the morphology of the arolia between the different families. They can beeither relatively simple cushion-like or bipartite or even consist of different lobe-like structures. E.g.,in the genera Galeodes and Paragaleodes (Galeodidae) the structure of the arolia is cushion-likeand quite uniform with only slight differences, whereas within the family e.g., Daesiidae the aroliaexhibit very distinct shapes. Although tarsal structures may also be highly adapted to ecologicalconditions, the putative systematic and phylogenetic value is discussed.