Sirvi Kuupäev , alustades "2010-05-11T06:48:44Z" järgi

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Systematic studies on the subfamily Sterrhinae (Lepidoptera: Geometridae)
(2010-05-11T06:48:44Z) Õunap, Erki
This thesis focuses on problems related to the systematics of the moth subfamily Sterrhinae, one of the largest subfamilies of ‘loopers’ (Geometridae). Molecular phylogenetic analysis proved that the European ‘blood-vein’ is a complex of two closely related species, namely Timandra griseata and T. comae. There was also some evidence that these species may occasionally hybridize. I showed that the small Palaearctic genus Lythria belongs in the Sterrhinae subfamily rather than the Larentiinae subfamily, which was the previously prevailing opinion. This result was confirmed both using molecular phylogenetic analysis and examination of morphological characteristics. Moreover, I showed that certain morphological characteristics related to the wing venation that had previously been thought to be critical in distinguishing between Sterrhinae and Larentiinae are in fact unsuitable for that purpose, as they occur in both groups. Lythria venustata, a species hitherto only recorded in Kazakhstan, was shown to differ considerably from all other representatives of the genus Lythria. The remaining four Lythria species formed two groups of sister taxa: the widely-distributed Eurasian species L. purpuraria was closely related to L. plumularia, which is an endemic of European High Alps; L. cruentaria, another widely-distributed Eurasian species, was closely related to L. sanguinaria, whose distribution is confined to the Iberian Peninsula and southern France. Using molecular phylogenetic analysis I divided the subfamily Sterrhinae into two lineages: one comprising the tribes Rhodostrophiini, Scopulini and Sterrhini; and the other comprising the tribes Cosymbiini, Timandrini, Rhodometrini and Lythriini. This division is in concordance with recent morpho-cladistic analysis.