Rudolf Rozkošný

Global diversity of dipteran families (Insecta Diptera) in freshwater (excluding Simulidae, Culicidae, Chironomidae, Tipulidae and Tabanidae)

Today’s knowledge of worldwide species diversity of 19 families of aquatic Diptera in Continental Waters is presented. Nevertheless, we have to face for certain in most groups a restricted knowledge about distribution, ecology and systematic, particularly in the tropical environments. At the same time we realize a dramatically decline or even lack of specialists being able, having the time or the opportunity to extend or even secure the present information. The respective families with approximate numbers of aquatic species are: Blephariceridae (308), Deuterophlebiidae (14), Nyphomyiidae (7), Psychodidae (∼2.000), Scatopsidae (∼5), Tanyderidae (41), Ptychopteridae (69), Dixidae (173), Corethrellidae (97), Chaoboridae (∼50), Thaumaleidae (∼170), Ceratopogonidae (∼6.000), Stratiomyidae (∼43), Empididae (∼660), Lonchopteridae (2), Syrphidae (∼1.080), Sciomyzidae (∼190), Ephydridae (∼1.500), Muscidae (∼870). Numbers of aquatic species will surely increase with increased ecological and taxonomical efforts.

A phylogenetic analysis of Sciomyzidae (Diptera) and some related genera

Sciomyzidae is a family of acalyptrate flies with 546 species in 61 genera that is among the most extensively studied groups of higher Diptera. Most of the known larvae are obligate enemies of Gastropoda. Hundreds of studies published over the past 50 years have resulted in detailed information concerning morphology of adults and immature stages, biology, development, behaviour, phenology and distribution. However, studies of phylogenetic relationships are based almost exclusively on morphological characters of adults, and no comprehensive molecular analysis across the family has been published. Here we fill this void by generating and analysing molecular data for 54 species of Sciomyzidae (22 genera), including Phaeomyiidae (one genus), and seven representative species of five other families of Sciomyzoidea (Coelopidae, Dryomyzidae, Helcomyzidae, Heteromyzidae and Huttoninidae) as outgroups. The reconstruction is based on morphological characters as well as nucleotide sequences for genes from the mitochondrial (12S, 16S, COI, COII, Cytb) and nuclear genome (28S, EF1α). The results are compared with recent morphological analyses. Our analyses support the monophyly of Sciomyzidae + Phaeomyiidae, and place Phaeomyiinae as a unique lineage within Sciomyzidae. A modified classification comprising three subfamilies is proposed. The major subfamily, Sciomyzinae, consists of two monophyletic and well separated groups, the tribes Sciomyzini and Tetanocerini.

A review of the Oriental Culcua with descriptions of seven new species (Diptera, Stratiomyidae)

This revisional study resulted in the description of 7 new species and one resurrection from synonymy: Culcua argentea sp.n. is described from Laos, C. chaineyi sp.n. from Malaysia, C. fasciata sp. n. from the Philippines, C. kolibaci sp.n. from Laos, Malaysia and Thailand, C. kovaci sp.n. from Laos and Thailand, C. normani sp.n. from East Malaysia and C. ornans sp.n. from India.

Additions and corrections to “The Muscidae of Central Europe” II. Two new species of Spilogona (Diptera, Muscidae)

Two species of Spilogona, S. angustigena sp. n. and S. tatrica sp. n., are described from the Czech Republic and Slovakia, respectively. Both species are characterised by a gynaecomorphic shape of the male head, i.e., by a broad frons and the presence of a pair of orbital setae. Three species with this type of head are already known in the Palaearctic region: S. karelica (Tiensuu, 1935) from Russian Karelia, S. lapponica (Ringdahl, 1932) occurring in Norway and Sweden and redescribed here from material collected recently in Russia and Sweden, and S. spinicosta (Stein, 1907) from Tibet. All five species are compared and a new identification key is given. Apart from the external similarity of the male heads, the species under study are hardly closely related and their dichoptic heads may be explained as a homoplasy among similar ecomorpha.

Review of Colobaea Zetterstedt (Diptera: Sciomyzidae), with a new species from northern Fennoscandia

The sciomyzid genus Colobaea Zetterstedt is characterized with notes on synonymy and a diagnosis. The distribution of the known species is summarized, a new species, C. nigroaristata sp.n., is described and included in a key to the species.

A new genus and three new species of Oriental Oxycerini (Diptera: Stratiomyidae: Stratiomyinae) with notes on new generic synonyms in two other stratiomyine genera

Oxycerina gen.n. (Stratiomyidae: Stratiomyinae), including three new species, O . hauseri sp.n., O . merzi sp.n. and O . sabaha sp.n., is described from the Oriental Region and compared with related genera of Stratiomyinae and Raphiocerinae. The monotypic genus Scapanocnema Enderlein, 1914 is considered to be a synonym of Odontomyia Meigen, 1803; S . spathulipes Enderlein, 1914 and O . latitibia Rozkosný & Kovac, 1994 are considered to be new synonyms of O . luteiceps de Meijere, 1911. Cyrtopus Bigot, 1883, is also proposed as a synonym of Odontomyia , resulting in new or resurrected combinations for the species O . fastuosa (Bigot, 1883), O . magnifica Lachaise & Lindner, 1973, and O . smaragdifera (Lindner, 1938). Timorimyia Frey, 1934 is proposed as a new synonym of Acanthasargus White, 1914, resulting in A . bidentatus (Frey, 1934), comb.n. A key to the genera of the Oriental Stratiomyinae and Raphiocerinae is presented.

A revision of Pegadomyia Kertész with descriptions of a new genus and four new species (Diptera, Stratiomyidae)

All Oriental and Australasian/Oceanic species of Pegadomyia are re-examined. A detailed study of the generic characters shows that Pegadomyia actually contains two easily diagnosed genera: Pegadomyia Kertesz, 1916 and Pseudopegadomyia gen. n. Pegadomyia now includes the type species P. pruinosa Kertesz, 1916 (occurring in Malaysia, Taiwan and Thailand) and three new species: P. ceylonica sp.n. (from Sri Lanka), P. nana sp.n. (from Laos) and P. nasuta sp.n. (from Malaysia). Pseudopegadomyia contains Ps. jamesi sp.n. (based on a type series from the Philippines) and two species originally belonging to Pegadomyia: Ps. glabra (Bezzi, 1928), comb.n. (Fiji Is.) and Ps. nuda (James, 1948), comb.n. (Australasian Region and Philippine Is.). Figures of the diagnostic characters of all treated species are included. Identification keys and a map showing the distribution of all species of both genera are presented.

New records of Ptecticus Loew, 1855, species from the Oriental and Australian regions with a description of a new species from the Philippines and two new synonyms (Diptera: Stratiomyidae)

A new species from the Philippines, Ptecticus kovaci sp. nov., related to P. flavifemoratus Rozkošný & Kovac 1996, is described. P. repensans ssp. anneliesae Lindner, 1935 and P. repensans ssp. monticola Lindner, 1935, described from Sulawesi (Indonesia), are apparently different from P. repensans (Walker, 1859) now considered a synonym of P. complens (Walker, 1858). We recognize P. anneliesae Lindner, 1935 as a valid species with P. repensans ssp. monticola Lindner and P. mirabilis Rozkošný & Kovac 2003 as new synonyms. In the appended list of new records of 23 species from Oriental and Australian Ptecticus species, P. australis Schiner, 1868 and P. subaustralis Rozkošný & Kovac 1998 are newly recorded from Indonesia, P. erectus Rozkošný & Kovac 2000, P. kambangensis Meijere, 1914 and P. sumatranus Enderlein, 1914 newly recorded from Malaysia, P. longipennis Wiedemann, 1824 is newly recorded from Thailand and P. vulpianus (Enderlein, 1914) is newly recorded from Taiwan.

Identity of the Oriental and Australasian species of Ptecticus Loew described by J.C.H. de Meijere (Diptera, Stratiomyidae)

Based on a study of type material, the taxonomic status of the six species described by J.C.H. de Meijere is revised. The validity of four nominal taxa is confirmed, P. albitarsis is a synonym of P. quadrifasciatus and P. rectinervis is interpreted as a new synonym of P. vulpianus. Lectotypes are designated for four species and the female of P. kerteszi is described for the first time. Relationships of the species examined are discussed.

Additions and corrections to “The Muscidae of Central Europe” III. A new species of Coenosia Meigen, 1826 from Central Europe (Diptera: Muscidae)

Coenosia bohemica sp. n. is described from the Bohemian Forest in the Czech Republic. Its relationships to similar species are discussed and its diagnostic characters are illustrated.