00924nas a2200205   4500008004100000020001400041245010100055210006900156260001400225300001000239490000600249520032100255653001000576653001200586653001300598653001500611653001300626100002900639856005000668       2007                        eng d  a1887-741900aNew Species of Fungus Gnats (Diptera: Mycetophilidae) from the Palaeocene Sakhalin Amber, Russia0 aNew Species of Fungus Gnats Diptera Mycetophilidae from the Pala  cMay, 2007  a27-360 v13 aSix new species belonging to six genera (five extant and one extinct) are described form the Palaeocene amber from Sakhalin Island: Sciophila takoyensis sp. nov., Apolephthisa sakhalina sp. nov., Synapha zherikhini sp. nov., Syntemna falcata sp. nov., Nedocosia naiba sp. nov., and Mycomya (M.) palaeocenica sp. nov.10aAmber10aDiptera10aNew taxa10aPalaeocene10aSakhalin1 aBlagoderov, Vladimir, A.  uhttp://www.alavesia.net/ALAVESIA_2007_027.pdf02359nas a2200157   4500008004100000245010900041210006900150260001500219300000900234490000900243520181200252100002902064700002402093700002502117856005902142       2007                        eng d00aHow Time Flies for Flies: Diverse Diptera from the Triassic of Virginia and Early Radiation of the Order0 aHow Time Flies for Flies Diverse Diptera from the Triassic of Vi  c16/05/2007  a1-400 v35723 aThe most diverse and best-preserved early fauna of flies (order Diptera) is described from the Late Carnian (Late Triassic, ca. 220 Ma) of Virginia, USA. Complete flies are preserved as aluminosilicate films on very fine-grained shales from the Cow Branch Formation, which is part of the Newark Supergroup of Early Mesozoic rift basins from eastern North America. The dipteran fauna consists of eight families (one new), 11 genera (five new), and 16 species (11 new), and includes the following taxa (Blagoderov and Grimaldi are the authors of all new names): Architipula youngi Krzemiński, Metarchilimonia krzeminskorum n.gen., n.sp., and M. solita n.sp. (Limoniidae); Triassopsychoda olseni n.gen., n.sp. (Psychodidae); Culicomorpha indet.; Yalea argentata (Krzemiński), Y. rectimedia n.sp., Alinka cara Krzemiński (Procramptonomyiidae); Veriplecia rugosa n.sp., Virginiptera certa n.gen., n.sp., V. similis n.sp., V. lativentra n.sp. (Paraxymyiidae); Brachyrhyphus distortus n.gen. n.sp. (Protorhyphidae); ?Crosaphis virginiensis n.sp. (Crosaphididae); and Prosechamyia trimedia n.gen., n.sp., P. dimedia n.sp. (Prosechamyiidae, new family). Particularly significant is a culicomorphan with a long proboscis, which is the earliest fossil record of a structure specialized apparently for blood feeding. Also, Prosechamyia appears to be a stem group to the very diverse infraorder Brachycera, the earliest definitive members of which appear in the Early Jurassic. Phylogenetic relationships of major clades of living and extinct nematocerous Diptera are analyzed, indicating that infraordinal-level diversification was complete by the Late Triassic. Flies did not reach modern levels of ecological abundance until the mid-Jurassic, apparently due to diversification within most infraorders by that time.1 aBlagoderov, Vladimir, A.1 aGrimaldi, David, A.1 aFraser, Nicholas, C.  uhttp://digitallibrary.amnh.org/dspace/handle/2246/5854