Br. Theowald’s scientific contributions

... Although much is known about crane flies in general, there are still significant gaps in our understanding of their life history, phylogenetic relationships, and overall taxonomic structure. For instance, while over 15,700 species have been described, only about one-third of the genera and subgenera are known in the immature stages (Oosterbroek and Theowald 1991). A consistent taxonomic framework has been maintained, yet higher-level quantitative phylogenetic analyses suggest that it does not fully reflect the evolutionary relationships within the group . ...

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Crane fly (Diptera: Tipuloidea) systematics: past, present, and future

... The species was then identified from the adult features, especially those of the male hypopygium, using Alexander (1934) and Savchenko (1964). Savchenko (1954); Theowald (1957Theowald ( , 1967; Podeniene (2003) Westpalaearctic (Europe); Eastpalaearctic (West Siberia of Russia) Under moss on live or decaying wood or stone Tipula truncorum Meigen, 1830 Savchenko (1954); Theowald (1957Theowald ( , 1967; Podeniene (2003) Westpalaearctic (Europe); Eastpalaearctic (West Siberia of Russia) Under moss in low lying woody swamps Tipula varipennis Meigen, 1818 Savchenko (1954); Chiswell (1956); Theowald (1957Theowald ( , 1967 Content courtesy of Springer Nature, terms of use apply. Rights reserved. ...

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Morphological description of the last instar larva of Tipula (Pterelachisus) cinereocincta mesacantha Alexander 1934 (Diptera: Tipuloidea: Tipulidae), a newly recorded crane fly from China

... Nowadays, the dipteran fauna of the Archipelago comprises around 400 Diptera species with 52 endemisms (Diaz et al. 2005a(Diaz et al. , 2005b. The first mention regarding the Diptera fauna of the islands was published in 1861 (Drouet 1861), followed by Séguy (1936), Frey (1945), Carlsson (1963), Nielsen (1963Nielsen ( , 1964Nielsen ( , 1966aNielsen ( , 1966b, Theowald (1977), Rojo et al. (1997), Wagner et al. (2002), Diaz et al. (2005aDiaz et al. ( , 2005b, and Borges et al. (2010). ...

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Alepia viatrix sp. nov. (Diptera: Psychodidae), a new species of a Neotropical genus found on the Azores Archipelago (Portugal)

... Including Madeira and the Azores the count for Portugal is 117 species (OOSTERBROEK, 2020). Contrary to these islands, discussed in detail in THEOWALD (1977THEOWALD ( , 1981, a comparable attention has not been paid to the cranefly fauna of continental Portugal. This in spite of the fact that the first craneflies from Portugal were published some two-hundred years ago, in MEIGEN (1818). ...

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The Craneflies of continental Portugal (Diptera, Limoniidae, Pediciidae, Tipulidae) including 28 species new for Portugal Moscas grulla de Portugal continental (Diptera, Limoniidae, Pediciidae, Tipulidae) incluyendo 28 especies nuevas para Portugal

... The discriminating characters for D. hirsuticauda males are: Hind margin of tergite 9 with two small triangles between median appendage and extended lateral corners ( Savchenko (1968) for D. hirsuticauda, and by Theowald (1978a) for D. schahriari. Therefore, it is almost certain that in preparing his 1978a paper, Theowald did not know of D. hirsuticauda, the more so because the latter species is not mentioned in his paper. ...

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Review of the Western Palaearctic species of Dolichopeza Curtis (Diptera, Tipulidae)

... For a few species more detailed information is available from the continent (Oosterbroek, Schuckard & Theowald, 1976;Oosterbroek, 1978Oosterbroek, -1980Savchenko, 1973). ...

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The Japanese species of Nephrotoma (Diptera, Tipulidae).

... Les connaissances faunistiques concernant les Tipulidae de la région paléarctique occidentale, qui permettent la comparaison des résultats obtenûs en Suisse, ont fait récemment de grands progrès. Theowald (1980) énumère les travaux publiés ou en préparation. Ce sont essentiellement dans les pays méditerranéens que les recherches sont les plus fructueuses car le niveau des connaissances y est encore assez limité. ...

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Dufour 1986 Les Tipulidae de Suisse