A review of fungus gnats in the tribe Exechiini (Diptera, Mycetophilidae) from the J. W. Zetterstedt collection at the Museum of Zoology in Lund, Sweden

Publication Type:Journal Article
Year of Publication:2005
Authors:Kjærandsen, J.
Keywords:BT: Systematics-; Nomenclature-; Type-material; Synonymy-; Available-name; Taxonomy-; Status-; Animals-and-man; Education-and-entertainment; Land-zones; Palaearctic-region; Eurasia-; Europe-; DE: Exechiini- ( Mycetophilidae- ) : Museums-collections-and-

The collections of fungus gnats by Johan Wilhelm Zetterstedt (1785ы1874), lodged in the Museum of Zoology in Lund, Sweden, are examined for all species belonging in the tribe Exechiini Edwards. The majority of the material was collected in Fennoscandia, mainly in Sweden, in the first half of the 19th century. Altogether 37 species of the tribe Exechiini could be safely identified. Three additional species are strongly indicated to be present in the collections, but could not be identified with certainty, viz. Allodia (Brachycampta) alternans (Zetterstedt, 1838), Cordyla murina Winnertz, 1863 and Stigmatomeria crassicornis (Stannius, 1831). Some of Zetterstedt's types have been erroneously synonymized and misinterpreted in modern literature. Hence, illustrations of terminalia are presented for all recognizable Exechiini types described by Zetterstedt. In order to preserve nomenclatural stability a lectotype is selected for Brevicornu griseolum (Zetterstedt, 1852) sensu auctore nec Edwards, and a neotype is selected for Allodia (Brachycampta) alternans (Zetterstedt, 1838). Two species names are reinstated, viz. Brevicornu canescens (Zetterstedt, 1852) sp. restit. stat. n. and Notolopha brachycera (Zetterstedt, 1838) sp. restit. stat. n. Two new synonyms are established, viz. Notolopha brachycera (Zetterstedt, 1838) = Allodiopsis (Notolopha) tuomikoskii Zaitzev & Maximova, 2000 syn. n., and Brevicornu griseolum (Zetterstedt,1852) = Brevicornu boreale (Lundstrom, 1914) syn. n. All type specimens of Brevicornu fusculum (Zetterstedt, 1838) have lost their abdomens. No material of Exechia parvula (Zetterstedt, 1852) or Cordyla canescens Zetterstedt, 1852 could be located in the collections. Although the type material of Exechia parvula probably is lost, the name is still valid as a junior synonym for Mycetophila nana Staeger, 1840 since Mycetophila nana Staeger, 1840 is a junior primary homonym of Mycetophila nana Macquart, 1826. Cordyla canescens has been made a junior synonym for Stigmatomeria crassicornis (Stannius, 1831). The identity of Brevicornu fusculum is highly uncertain and the name must remain as a nomen dubium. Eleven species are reinstated or correctly reported from Sweden for the first time: Allodia (Allodia) tuomikoskii Hackman, 1971, Allodia (Allodia) zaitzevi Kurina, 1998, Allodiopsis rustica (Edwards, 1941), Brevicornu canescens (Zetterstedt, 1852), Brevicornu nigrofuscum (Lundstrom, 1909), Exechiopsis (Xenexechia) crucigera (Lundstrom, 1909), Pseudexechia aurivernica Chandler, 1978, Notolopha brachycera (Zetterstedt, 1852) Synplasta gracilis (Winnertz, 1863), Tarnania dziedzickii (Edwards, 1941), and Tarnania nemoralis (Edwards, 1941).

Taxonomic name: 
Mycetophilidae (Classification), Mycetophilinae (Classification), Exechiini (Classification), Allodia (Classification), Allodia Allodia (Classification), Allodia ornaticollis (Classification), Allodia truncata (Classification), Allodia tuomikoskii (Classification), Allodia zaitzevi (Classification), Allodia Brachycampta (Classification), Allodia alternans (Classification), Allodia grata (Classification), Allodia lugens (Classification), Allodia septentrionalis (Classification), Allodiopsis (Classification), Allodiopsis rustica (Classification), Anatella (Classification), Anatella simpatica (Classification), Brevicornu (Classification), Brevicornu fuscipenne (Classification), Brevicornu griseicolle (Classification), Brevicornu griseolum (Classification), Brevicornu nigrofuscum (Classification), Brevicornu sericoma (Classification), Stigmatomeria (Classification), Stigmatomeria crassicornis (Classification), Brevicornu canescens (Classification), Exechia (Classification), Exechia bicincta (Classification), Exechia contaminata (Classification), Exechia dizona (Classification), Exechia frigida (Classification), Exechia fusca (Classification), Exechia lucidula (Classification), Exechia pseudocincta (Classification), Exechia separata (Classification), Exechia seriata (Classification), Exechia spinuligera (Classification), Exechia unimaculata (Classification), Exechiopsis (Classification), Exechiopsis Exechiopsis (Classification), Exechiopsis indecisa (Classification), Exechiopsis Xenexechia (Classification), Exechiopsis crucigera (Classification), Notolopha (Classification), Notolopha cristata (Classification), Notolopha brachycera (Classification), Pseudexechia (Classification), Pseudexechia trivittata (Classification), Rymosia (Classification), Rymosia fasciata (Classification), Synplasta (Classification), Synplasta gracilis (Classification), Tarnania (Classification), Tarnania dziedzickii (Classification), Tarnania nemoralis (Classification), Cordyla (Classification), Cordyla crassicornis (Classification), Cordyla murina (Classification), Pseudexechia aurivernica (Classification)
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