Eudactylocladius
publication ID |
https://doi.org/ 10.5281/zenodo.157963 |
DOI |
https://doi.org/10.5281/zenodo.6270728 |
persistent identifier |
https://treatment.plazi.org/id/6A278781-FF8F-FFD6-FEA9-FB92FAAC265F |
treatment provided by |
Plazi |
scientific name |
Eudactylocladius |
status |
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Key to male imagines of the subgenus Eudactylocladius
(Modified from Cranston, 1999)
1. Superior volsella well developed, rounded to rightangled ........................................................ 2
Superior volsella scarcely to moderately developed................................................................... 3
2 Inferior volsella well developed, bluntly triangular; dorsal part of cibarial pump wider than long; no sensilla chaetica on mid leg; Palaearctic .................................... O View in CoL . (E.) musester sp. n.
Inferior volsella weakly indicated to nonexistent; dorsal part of cibarial pump not as wide as long; sensilla chaeticae present on mid leg; Palaearctic ............................................................... .......................................................................................................... O. (E.) fuscimanus (Kieffer) View in CoL
3. Inner margin of gonocoxite with strong dense setae, commencing some distance posterior of gonocoxite base, associated with weakly delimited superior volsella ........................................ 4
Inner margin of gonocoxite with finer, less dense, setae, commencing closer to gonocoxite base, anterior to sometimes moderately indicated superior volsella........................................... 5
4. Gonostylus without inner projection, squama with 9–14 setae; Nearctic..................................... ....................................................................................................... O. (E.) subletteorum Cranston View in CoL
Gonostylus with inner, preapical, triangular projection; squama with 13–20 setae; Palaearctic. ................................................................................................................ O View in CoL . (E.) priomixtus sp. n.
5. Superior volsella moderately developed, angular; anal point strong, but not strongly sclerotised, greater than 50 m long; ultimate flagellomere at least 500 m long; Holarctic ............... ................................................................................................................... O View in CoL . (E.) gelidus Kieffer
Superior volsella scarcely developed; anal point weak to moderately developed or strong and sclerotised, usually less than 50 m long; ultimate flagellomere often less than 500 m long. 6
6. Anal point strong, well sclerotised; sensilla chaeticae of legs absent; Svalbard..........................
..................................................................................................................... O. (E.) schnelli View in CoL sp. n. Anal point sometimes very weak to absent, never strongly sclerotised; sensilla chaeticae probably always present on mid and hind legs .................................................................................... 7 7. Gonostylus with microtrichiae on dorsal surface strong and dense, anal point sometimes very weak to absent; Nearctic .................................................................. O View in CoL . (E.) dubitatus Johannsen
Gonostylus with microtrichiae on dorsal surface fine and sparse, anal point well developed .. 8
8. Gonocoxite with both volsellae distinct, particularly the superior; Holarctic .............................. ........................................................................................................... O. (E.) gelidorum (Kieffer)
Gonocoxite without differentiated volsellae, just a gently rounded contour; Holarctic ............... ............................................................................................................... O. (E.) olivaceus Kieffer View in CoL
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