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Lars Vilhelmsen

Lars Vilhelmsen


The genera Chalinus Konow and Mocsarya Konow are revised. Eight species are recognised in Chalinus: C. berlandi Guiglia, C. braunsi (Enslin), C. haugi du Buysson, C. imperialis (Westwood), C. orientalis Guiglia, C. purpureiventris Cameron, C. somalicus Guiglia, C. timnaensis Kraus. Chalinus balianii Guiglia is proposed as a new synonym of C. berlandi Guiglia, C. schulthessi Guiglia as a new synonym of C. braunsi (Enslin), and the synonymy of C. congoensis Guiglia with C. imperialis (Westwood) is reestablished. Two species are recognised in Mocsarya: M. metallica (Mocsáry); M. syriaca Benson. Two nominal species, Oryssus oberthueri Saussure and Oryssus plumicornis Guérin-Menneville are treated as species inquirendae in Chalinus. Keys, redescriptions and distribution maps are provided for all recognised species.

Peder Skou and Lars Vilhelmsen

Sidsel Larsen and Lars Vilhelmsen

Lars Vilhelmsen and Michael S. Engel

Sambia succinica gen. et sp.n. from Eocene Baltic amber is described and illustrated. It is apparently the first amber fossil that can be definitively assigned to Tenthredininae. It displays two diagnostic forewing characters for this subfamily: having a bend distally in vein R and the junctions of veins M and Rs + M with vein R being some distance from each other. The variance and possible transitions between the anal vein configurations among the genera in Tenthredininae is briefly discussed.

David R. Smith and Lars Vilhelmsen


The genera Argentophrynopus Vilhelmsen & Smith, gen. n., Guiglia Benson, Kulcania Benson, Ophrella Middlekauff, Ophrynon Middlekauff, Ophrynopus Konow, and Stirocorsia Konow of the wasp family Orussidae are revised. This group of genera of Orussidae occurs from southern United States to Chile and in Japan, southeastern Asia, and Australia. In total, 27 species are recognized, including Argentophrynopus enigmus Vilhelmsen & Smith, sp. n., A. gauldi Vilhelmsen & Smith, sp. n., Guiglia rubicunda Schmidt, sp. n., Ophrynopus carinatus Vilhelmsen & Smith, sp. n., and Ophrynopus hansoni Vilhelmsen & Smith, sp. n. Guiglia queenslandensis coronata Rayment is considered a new junior synonym of G. sericatus (Mocsáry); G. aureola Benson is considered a species inquirenda. Kulcania tomentosa (Middlekauff), comb. n., is transferred from Ophrynopus. Ophrynopus philippinensis Guiglia is considered a new junior synonym of Stirocorsia kohli Konow; Ophrynella rossi Yasumatsu, syn. n., and Oryssus trifasciatus Cameron, rev. stat., are both considered junior synonyms of Stirocorsia maculipennis (Smith). Keys and distribution maps of all recognized species are provided, as well as descriptions of all genera.

David Smith, Lars Vilhelmsen and Stephan Blank


Three new species of Ophrynon Middlekauff, 1983, O. dominiqueae, O. martini and O. patricki, are added to the only species known previously, O. levigatus Middlekauff, 1983. All species are described, illustrated and keyed. Cladistic analyses under different weighting conditions retrieved Ophrynon as monophyletic, but the topologies produced for the higher ophrynopine taxa are quite variable. The possible closest relatives of Ophrynon are Argentophrynopus Vilhelmsen & D.R. Smith, 2002 and Kulcania Benson, 1935. The internal phylogeny of Ophrynon is O. martini + (O. levigatus + (O. dominiqueae + O. patricki)). The distribution of Ophrynon is restricted to central and southern California. Supposedly, the species belong to the californo-eremial distribution type and are the result of a comparatively recent speciation process.

Lars Vilhelmsen, Stephan M. Blank, Zhiwei Liu and David R. Smith

The genus Orussus is reviewed, with primary focus on taxa from the Oriental Region; a revised key to the world species is presented. The newly described species are analysed with a comprehensive morphological data set encompassing the entire family. The discovery of the new species corroborates the earlier proposed hypothesis that Orussus originated in the Oriental Region. The following new species are described: O. areolatus Blank & Vilhelmsen from Morocco, O. hanumanus Vilhelmsen & Blank from India (described for O. decoomani auct.), O. punctulatissimus Blank & Vilhelmsen from Malaysia, and O. zhui Vilhelmsen, Liu, Smith & Blank from China. Currently O. decoomani Maa, 1950 from Vietnam cannot be interpreted properly and is considered a species inquirenda. Orussus mikagei Togashi, 2008 is proposed as a new synonym of O. rufipes Tsuneki, 1963.