Eudactylocladius

• Main Authors: , Ole, Saether, A.
• Format: Text
• Language: unknown
• Published: Zenodo 2004
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Insecta; Diptera; Chironomidae; Eudactylocladius; Svalbard; Norway
• Online Access: https://dx.doi.org/10.5281/zenodo.6270728; https://zenodo.org/record/6270728

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 . ( 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) 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 ­ Gonostylus with inner, preapical, triangular projection; squama with 13–20 setae; Palaearctic. ................................................................................................................ O . ( 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 . ( 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 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 . ( 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 : Published as part of Ole & Saether, A., 2004, Three new species of Orthocladius subgenus Eudactylocladius (Diptera: Chironomidae) from Norway, pp. 1-12 in Zootaxa 508 on pages 11-12, DOI: 10.5281/zenodo.157963 : {"references": ["Cranston, P. S. (1999) Nearctic Orthocladius subgenus Eudactylocladius revised (Diptera: Chironomidae). Journal of the Kansas Entomological Society, 71, 272 - 295."]}