01296nas a2200133   4500008004100000245009000041210006900131260002700200300001200227490000800239520085000247100001801097856004701115       2013                        eng d00aReview of the Palaearctic Acomopterella Zaitzev (Diptera, Sciaroidea, Mycetophilidae)0 aReview of the Palaearctic Acomopterella Zaitzev Diptera Sciaroid  bPensoft Publishersc02  a11–320 v2693 a<p>The distribution of Acomopterella species in the Palaearctic region has been re-examined in this study, using recently collected material. The European species was found to be distributed in the eastern Palaearctic as well. A second Palaearctic species from Honshu (Japan) is herein described. The morphology of adult specimens was studied by light microscopy and scanning electron microscopy. The shape of functional specialized setae on mid tibiae in Acomopterella and seven further fungus gnat genera is described and the suitability of this character for systematic studies is discussed. Details of a &ldquo;hind tibial organ&rdquo; are described.The position of Acomopterella in the tribe Gnoristini is briefly discussed. Acomopterella is found to be more closely related to Speolepta Edwards, 1925, than to any other recent genus.</p>
1 aKallweit, Uwe  uhttp://dx.doi.org/10.3897/zookeys.269.425202083nas a2200229   4500008004100000245009800041210006900139260003200208300001200240490000800252520138800260653001601648653002301664653001401687653001701701653001401718653001301732653001301745100002301758700002501781856004701806       2012                        eng d00aKatatopygia gen. n., a monophyletic branch segregated from Boletina (Diptera, Mycetophilidae)0 aKatatopygia gen n a monophyletic branch segregated from Boletina  bPensoft Publishersc03/2012  a37–670 v1753 aThe genus Katatopygia gen. n. is proposed for the Boletina erythropyga/punctus-group that was first introduced by Garrett (1924, 1925) and currently comprises eight described species. Molecular studies have strongly indicated that this group forms a monophyletic sister-group to a clade consisting of all other Boletina, Coelosia and Gnoriste, and its monophyly is supported by morphological data as well. The new genus includes the following species: Katatopygia antoma (Garrett, 1924), comb. n., Katatopygia antica (Garrett, 1924), comb. n., Katatopygia erythropyga (Holmgren, 1883), comb. n., Katatopygia hissarica (Zaitzev & Polevoi, 2002), comb. n., Katatopygia magna (Garrett, 1925), comb. n., Katatopygia laticauda (Saigusa, 1968), comb. n., Katatopygia neoerythropyga (Zaitzev & Polevoi, 2002), comb. n. and Katatopygia sahlbergi (Lundström, 1906), comb. n., all transferred from Boletina. K. sahlbergi is found to be a senior synonym of Boletina punctus Garrett, 1925, syn. n. A phylogeny based on morphological data and using parsimony analysis yielded four most parsimonious trees where the new genus is retrieved as monophyletic with high support. Katatopygia neoerythropyga is found to be the sister-taxon to all other species that form two clades, one with K. sahlbergi-like species and one with K. erythropyga-like species. A key to males of Katatopygia is provided. 10aGnoristinae10aidentification key10anew genus10anew synonymy10aphylogeny10arevision10aTaxonomy1 aMartinsson, Svante1 aKjærandsen, Jostein  uhttp://dx.doi.org/10.3897/zookeys.175.238801498nas a2200133   4500008004100000245007900041210006900120260003200189300001200221490000800233520106000241100001601301856004701317       2011                        eng d00aSix new species of Acomoptera from North America (Diptera, Mycetophilidae)0 aSix new species of Acomoptera from North America Diptera Mycetop  bPensoft Publishersc10/2011  a41–760 v1373 a<p> Six new species are described, raising the number of North American Acomoptera species to seven and the genus total to ten, and nearly doubling the number of species within the putative clade containing Acomoptera, Drepanocercus, and Paratinia. These novel species forms have implications for the concept of Acomoptera that in turn, may impact our understanding of its generic relationships and the evolution and composition of Gnoristinae and Sciophilinae. The new species, A. crispa, A. digitata, A. echinosa, A. forculata, A. nelsoni, and A. vockerothi, are compared with the type species of the genus, A. plexipus (Garrett), whose diagnostic features are imaged and illustrated for the first time. The European species, A. difficilis (Dziedzicki) is also illustrated and compared. Acomoptera spinistyla (S&oslash;li) comb. nov is transferred from Drepanocercus. A key to species is provided. Future work will seek to incorporate this knowledge into a systematic phylogenetic study of relationships between these species and their sister taxa. </p>1 aKerr, Peter  uhttp://dx.doi.org/10.3897/zookeys.137.1764