Revision of the Exechia parva group (Diptera: Mycetophilidae)
Exechia is a diverse genus of small fungus gnats, widespread in the Holarctic Region, while the fauna is largely unknown elsewhere, such as in the Afrotropical and Oriental Region. Members of Exechia can be arranged into several species groups, based on homologies in the male and female terminalia....
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| Format: | Article |
| Language: | English |
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Pensoft Publishers
2021-09-01
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| Series: | Biodiversity Data Journal |
| Subjects: | |
| Online Access: | https://bdj.pensoft.net/article/67134/download/pdf/ |
| _version_ | 1811328581288067072 |
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| author | Jon Peder Lindemann Geir Søli Jostein Kjærandsen |
| author_facet | Jon Peder Lindemann Geir Søli Jostein Kjærandsen |
| author_sort | Jon Peder Lindemann |
| collection | DOAJ |
| description | Exechia is a diverse genus of small fungus gnats, widespread in the Holarctic Region, while the fauna is largely unknown elsewhere, such as in the Afrotropical and Oriental Region. Members of Exechia can be arranged into several species groups, based on homologies in the male and female terminalia. The Exechia parva group is delimited, based on male terminalia possessing a pair of gonocoxal lobes on the apicoventral gonocoxal margin. Eight previously-described species can be placed in this group, of which six are from the Holarctic Region, while one is recorded each from the Oriental and the Afrotropical Regions.The Exechia parva group was reviewed and found to include 33 species, of which 24 were described as new to science and six were re-described. Identification keys to 32 species for males and nine species for females are provided together with illustrations and photos of male and female terminalia. Species delimitations were based on morphological examination of 94 male and female specimens, as well as DNA barcodes obtained from 124 specimens. Molecular and morphological species delimitations were mostly congruent, except in two cases where two species were delimited within a single Barcode Index Number (BIN). We found that each species is only known from a single zoogeographical region and that several species complexes are largely congruent with zoogeographical divisions, indicating that intercontinental barriers may have a strong impact on the species diversity of the group. |
| first_indexed | 2024-04-13T15:28:43Z |
| format | Article |
| id | doaj.art-464b41b2f5da455d9e45a0dda4968ba3 |
| institution | Directory Open Access Journal |
| issn | 1314-2828 |
| language | English |
| last_indexed | 2024-04-13T15:28:43Z |
| publishDate | 2021-09-01 |
| publisher | Pensoft Publishers |
| record_format | Article |
| series | Biodiversity Data Journal |
| spelling | doaj.art-464b41b2f5da455d9e45a0dda4968ba32022-12-22T02:41:26ZengPensoft PublishersBiodiversity Data Journal1314-28282021-09-019112210.3897/BDJ.9.e6713467134Revision of the Exechia parva group (Diptera: Mycetophilidae)Jon Peder Lindemann0Geir Søli1Jostein Kjærandsen2UiT – The Arctic University of NorwayNatural History MuseumUiT – The Arctic University of NorwayExechia is a diverse genus of small fungus gnats, widespread in the Holarctic Region, while the fauna is largely unknown elsewhere, such as in the Afrotropical and Oriental Region. Members of Exechia can be arranged into several species groups, based on homologies in the male and female terminalia. The Exechia parva group is delimited, based on male terminalia possessing a pair of gonocoxal lobes on the apicoventral gonocoxal margin. Eight previously-described species can be placed in this group, of which six are from the Holarctic Region, while one is recorded each from the Oriental and the Afrotropical Regions.The Exechia parva group was reviewed and found to include 33 species, of which 24 were described as new to science and six were re-described. Identification keys to 32 species for males and nine species for females are provided together with illustrations and photos of male and female terminalia. Species delimitations were based on morphological examination of 94 male and female specimens, as well as DNA barcodes obtained from 124 specimens. Molecular and morphological species delimitations were mostly congruent, except in two cases where two species were delimited within a single Barcode Index Number (BIN). We found that each species is only known from a single zoogeographical region and that several species complexes are largely congruent with zoogeographical divisions, indicating that intercontinental barriers may have a strong impact on the species diversity of the group.https://bdj.pensoft.net/article/67134/download/pdf/fungus gnats<i>Exechia</i>parvarepandataxo |
| spellingShingle | Jon Peder Lindemann Geir Søli Jostein Kjærandsen Revision of the Exechia parva group (Diptera: Mycetophilidae) Biodiversity Data Journal fungus gnats <i>Exechia</i> parva repanda taxo |
| title | Revision of the Exechia parva group (Diptera: Mycetophilidae) |
| title_full | Revision of the Exechia parva group (Diptera: Mycetophilidae) |
| title_fullStr | Revision of the Exechia parva group (Diptera: Mycetophilidae) |
| title_full_unstemmed | Revision of the Exechia parva group (Diptera: Mycetophilidae) |
| title_short | Revision of the Exechia parva group (Diptera: Mycetophilidae) |
| title_sort | revision of the exechia parva group diptera mycetophilidae |
| topic | fungus gnats <i>Exechia</i> parva repanda taxo |
| url | https://bdj.pensoft.net/article/67134/download/pdf/ |
| work_keys_str_mv | AT jonpederlindemann revisionoftheexechiaparvagroupdipteramycetophilidae AT geirsøli revisionoftheexechiaparvagroupdipteramycetophilidae AT josteinkjærandsen revisionoftheexechiaparvagroupdipteramycetophilidae |