Hydrobaenus distylus (Potthast, 1914)

Magoga, Giulia, Montagna, Matteo, Marziali, Laura, Rossaro, Bruno & Disaa, 2017, Revision of type and non-type material assigned to the genus Orthocladius by Goetghebuer (1940 - 1950), deposited in the Royal Belgian Institute of Natural Sciences (Diptera: Chironomidae), Acta Entomologica Musei Nationalis Pragae (Acta. Ent. Mus. Natl. Pragae) 57 (2), pp. 723-749 : 729

publication ID	https://doi.org/ 10.1515/aemnp-2017-0097
publication LSID	lsid:zoobank.org:pub:638421F2-985E-43CC-8438-E871F96B1DB8
DOI	https://doi.org/10.5281/zenodo.5335030
persistent identifier	https://treatment.plazi.org/id/03943519-0B43-C87F-FE54-FEC0FC7E5AAA
treatment provided by	Marcus
scientific name	Hydrobaenus distylus (Potthast, 1914)
status

Treatment

Hydrobaenus distylus (Potthast, 1914) View in CoL

Orthocladius distylus Potthast, 1914: 371 .

Orthocladius antennalis Goetghebuer, 1944: 39 View in CoL , syn. nov.

Type material examined. Orthocladius antennalis : LECTOTYPE and PARALECTOTYPE (here designated): two ♁♁ in isinglass, mounted on different slides; one slide labelled ‘ Orthocladius antennalis Melle 29. III.1944 // Lectotype // R.I.SC.N.B. 18.073 / Coll. et det. M. Goetghebuer’, one slide labelled ‘ Orthocladius antennalis Melle 29. III.1944 // Paralectotype // R.I.SC.N.B. 18.073 / Coll. et det. M. Goetghebuer’.

Additional material examined. 1 pinned ♁ (non-type material but from the same type locality) labelled ‘Reg. Mus. Hist. Nat. Belg. I. G. 10.148 // Dr. M. Goetghebuer det., 1933: Orthocladius distylus Kief. // Melle 2.IV. 23 M. Goetghebuer // distylus Kief. ’

Comments. ASHE & O’CONNOR (2012) listed O. antennalis Goetghebuer, 1944 among nomina dubia in Orthocladiinae . Metriocnemus antennalis Kieffer, 1921 is from another type locality and belongs to another genus. The examination of genitalia supports that O. distylus is conspecific with O. antennalis .

The wing membrane with faint punctation, squama with setae, presence of acrostichals, absence of pulvilli and the shape of hypopygium suggest the inclusion of all the three specimens in Hydrobaenus Fries, 1830 . Therefore, O. antennalis is here stated as a junior synonym of H. distylus .