@article {350, title = {Descriptions of puparia of Afrotropic species of Betasyrphus Matsumura (Diptera, Syrphidae)}, journal = {Acta universitatis Palackianae Olomucensis Facultas Rerum Naturalium Biologica}, volume = {37}, year = {1999}, pages = {89-98}, keywords = {B. claripennis, B. inflaticornis, B. luci, Betasyrphus adligatus, Diptera, immature stage, Syrphidae}, author = {Mazanek, Libor and Laska, Pavel and Bicik, Vitezslav and Dusek, Jindra and Novonty, Radko} } @article {459, title = {Die Schwebfliegensammlung von Julius Hermann (Diptera, Syrphidae)}, journal = {Volucella}, volume = {4}, number = {1/2}, year = {1999}, pages = {145-152}, author = {Stuke, Jens-Hermann} } @article {206, title = {Extreme host specificity by Microdon mutabilis (Diptera : Syrphidae), a social parasite of ants}, journal = {Proceedings of the Royal Society of London. Series B. Biological Sciences}, volume = {266}, number = {1418}, year = {1999}, pages = {447-453}, abstract = {Larvae of the syrphid fly Microdan mutabilis are social parasites which live up to two years, feeding on ant brood in nests of Formica lemani ants. We questioned why M mutabilis is extremely localized when its host is widespread and abundant. Like endoparasitic diseases, social parasites must penetrate formidable defences before {\textquoteright}infecting{\textquoteright} their hosts. This occurs during the egg stage of M. mutabilis: females are sedentary and oviposit at ii: lemani nest entrances, which workers treat as part of their nest, leaving the thin-shelled eggs vulnerable to attack for 10-14 days before hatching. We describe experiments which show a strong maternal effect in M. mutabilis. New-laid eggs had > 95\% survival when introduced to the individual ant colony that reared each mother fly or to its close neighbours, but survival declined as a sigmoidal logistic function of distance from the mother nest, with F. lemani colonies from 2 and 30 km away killing 80 and > 99\% of eggs, respectively, within 24h. Attacks on eggs also increased in proportion to the delay before introduction to laboratory nests. We suggest that they may be coated with a mimetic chemical disguise that lasts for three to four days after oviposition. The results indicate extreme local adaptation by an M. mutabilis population not simply to one species of host, but to an individual host population and possibly to local strains or family groups within an F. lemani population. This conclusion is discussed in terms of virulence, transmission and coevolution in parasitic diseases.}, keywords = {Microdon, predator, Syrphidae}, author = {Elmes, G.W. and Barr, B. and Thomas, J.A. and Clarke, R.T.} } @article {351, title = {Key to males of Norwegian species of Eupeodes (Diptera: Syrphidae)}, journal = {Dipterologica Bohemoslovaca}, volume = {9}, year = {1999}, pages = {143-52}, keywords = {Diptera, Eupeodes, key, new records, Norway, Syrphidae}, author = {Mazanek, Libor and Laska, Pavel and Bicik, Vitezslav and Nielsen, Tore Randlff} } @article {468, title = {Liste der bislang in der Hansestadt Bremen nachgewiesenen Schwebfliegen (Diptera: Syrphidae)}, journal = {Abhandlungen des Naturwissenschaftlichen Vereins Bremen}, volume = {44}, number = {2-3}, year = {1999}, pages = {867-875}, author = {Stuke, Jens-Hermann and Conrad, Heinke} } @article {525, title = {A new Oriental Sphegina species (Diptera: Syrphidae)}, journal = {Entomological News}, volume = {110}, number = {4}, year = {1999}, pages = {206-208}, address = {Philadelphia}, keywords = {Syrphidae}, author = {Thompson, F. Christian} } @article {348, title = {Revision of type material of Metasyrphus chillcotti (Diptera:Syrphidae)}, journal = {Dipterologica Bohemoslovaca}, volume = {9}, year = {1999}, pages = {139-142}, keywords = {Diptera, E. abiskoensis, E. punctifer, Eupeodes chillcotti, new synonymy, revised synonymy, Syrphidae}, author = {Mazanek, Libor and Laska, Pavel and Bicik, Vitezslav} } @article {349, title = {Two new Palaearctic species of Eupeodes similar to E. bucculatus (Diptera, Syrphidae)}, journal = {Volucella}, volume = {4}, number = {1/2}, year = {1999}, pages = {1-9}, author = {Mazanek, Libor and Laska, Pavel and Bicik, Vitezslav} } @article {340, title = {Vorl{\"a}ufige Artenliste der Schwebfliegen Hessens (Diptera: Syrphidae)}, journal = {Philippia}, volume = {9}, number = {2}, year = {1999}, pages = {145-149}, author = {Malec, Franz and L{\"o}hr, Paul-Walter and Geller-Grimm, Fritz and Hauser, Martin and Mansfeld, Peter and Stuke, Jens-Hermann} } @article {403, title = {Phylogeny of Palaearctic Syrphidae (Diptera): evidence from larval stages}, journal = {Zoological Journal of the Linnean Society}, volume = {127}, number = {1}, year = {1999}, month = {September}, pages = {1-112}, abstract = {We estimated the phylogeny of Palaearctic Syrphidae using 187 larval morphological characters obtained from about 65\% of the fauna (85 supraspecific taxa represented by 118 species) and based the analysis at the generic level. The root of the syrphid tree was established from an outgroup consisting of other Aschizan families: the Platypezidae, Phoridae and Pipunculidae, with the tree rooted on the Lonchopteridae. The Syrphidae was the most derived Aschizan family. The Pipunculidae was the sister group to the Syrphidae. Eumerus was basal within Syrphidae. A trend exists towards increasing complexity of integumental folds and grooves across the Aschiza. In movement, the integument collapses along the line of these grooves. Grooves are evidence of muscles forming functional groups. Elaboration of independent groups of muscles appears to underlie much of the evolution of larval form within Aschiza. The basal feeding modes of syrphid larvae are mycophagy and phytophagy. Above these feedingmodes, all remaining syrphids fall into one of two lineages comprising entomophages and saprophages, each of which has a single origin within the apparently polyphyletic Volucella. Major morphological innovation is associated with shifts between feeding modes; within feeding modes, change is gradual and tends towards increasing complexity. Change is mostly in structures associated with the mouthparts, thorax, anal segment and locomotory organs. Generic diagnoses with biological and taxonomic notes and a key to genera using larval characters are provided.}, keywords = {[Palaearctic region / / larval characters \& systematic implications]., Aschiza, Aschiza (Diptera), Aschiza [Phylogeny / / Cladistic relationships, BEHAVIOUR, cladistics, Diptera, entomophage \& saprophage characters] [Evolutionary adaptation / /, evidence, evolution, generic review \& systematic implications], key, larvae, larval character, Larval feeding modes] [Phylogeny / / Cladistic relationships within, morphology, Palaearctic region]., Palaearctic] [Nutrition / / Larval, phylogenetic \&, phylogeny, Syrphidae, Syrphidae [General morphology / / Larval characters, systematic implications}, url = {://ZOOR13600034861}, author = {Rotheray, Graham and Gilbert, Francis} } @article {524, title = {A key to the genera of the flower flies (Diptera: Syrphidae) of the Neotropical Region including descriptions of new genera and species and a glossary of taxonomic terms}, journal = {Contributions on Entomology, International}, volume = {3}, number = {3}, year = {1999}, pages = {319-378}, keywords = {Cepa, Cepa alex (Thompson), Ohmyia, Ohmyia omya Thompson, Syrphidae}, author = {Thompson, F. Christian} } @article {2927, title = {Phylogeny of the genus Xylota Meigen, 1822 (Diptera, Syrphidae) with descriptions of new taxa}, journal = {Dipteron}, volume = {2}, year = {1999}, pages = {45-68}, keywords = {Xylota, Xylota (Ameroxylota), Xylota (Brachypalpoides), Xylota (Haploxylota), Xylota (Haploxylota) sichotana Mutin, Xylota (Hovaxylota), Xylota (Sterphoides), Xylota (Xylota)}, author = {Mutin, V.A. and Gilbert, F.} } @article {325, title = {The air suction through mouths in Episyrphus balteatusI larvae (Diptera, Syrphidae)}, journal = {Dipterologica Bohemoslovaca}, volume = {9}, year = {1999}, pages = {125-126}, keywords = {air suction, Episyrphus balteatus, larva}, author = {Laska, Pavel} } @article {369, title = {Check-list and distribution maps of Norwegian Hoverflies, with description of Platycheirus laskai nov. sp. (Diptera, Syrphidae)}, journal = {NINA Fagrapport}, volume = {35}, year = {1999}, pages = {1-99}, author = {Nielsen, Tore R.} }