Orthocladius (Orthocladius) timoni Goetghebuer & Timon-David, 1939

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 : 734

Orthocladius (Orthocladius) timoni Goetghebuer & Timon-David, 1939

( Figs 37–40 )

Orthocladius (Orthocladius) timoni Goetghebuer & Timon-David, 1939: 69 .

Type material examined. LECTOTYPE (pinned ♁, present designation) and PARALECTOTYPE (pinned ♁), both now mounted on the same slide and labelled: ‘ Orthocladius timoni n. sp. // type ♁ Goetghebuer // Env. Marseille 1938, leg. Timon David // R.I.SC.N.B. 18.073 / Coll. et det. M. Goetghebuer’.The labels “ Lectotype ”and “ Paralectotype ” are added on the slide near the respective specimens, an Indian ink line separates the two specimens.

Comments. Orthocladius timoni was listed as a nomen dubium in Orthocladiinae by ASHE & O’CONNOR (2012). The specimens are in good condition and the examination of the hypopygium allows the assignment of the species to the subgenus Orthocladius s. str., but a separation from other species within the subgenus is not easy without associated exuviae or molecular data even if the details of the hypopygium, such as the anal point, the superior and inferior volsella and the presence of virga suggest a possible conspecificity with O. (O.) excavatus Brundin, 1947 ; the species can be considered tentatively valid, but for the same reasons reported for other species of the subgenus at present a formal synonymy is not recommended.

Figures

Figs 37‒40. Orthocladius (Orthocladius) timoni Goetghebuer & Timon-David, 1939. 37 ‒ anal point, 38 ‒ inferior volsella, 39 ‒ virga and superior volsella, 40 ‒ hypopygium.