Lapposmittia succinea ( Goetghebuer, 1942 ) Magoga & Montagna & Marziali & Rossaro & Disaa, 2017

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

Lapposmittia succinea ( Goetghebuer, 1942) , comb. nov.

( Figs 13–19 )

Orthocladius succineus Goetghebuer, 1942: 664 .

Type material examined. Orthocladius succineus : LECTOTYPE and PARALECTOTYPE (here designated): two ♁♁, in isinglass, now mounted on the same slide, labelled: ‘ Orthocladius succineus Goetgh. // Lectotype // Paralectotype // Allemagne 1941 dr. Thienemann // 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. GOETGHEBUER (1942) wrote in his original publication, in a footnote on page 664: ‘came from the Grossen Plöner See, more precise data on the collecting locality and time cannot be given’. ASHE & O’CONNOR (2012) listed Orthocladius succineus among nomina dubia in Orthocladiinae .

The specimens are in very poor condition, but the observable characters allow to conclude that the species fits reasonably well in Lapposmittia because of bare wings, eyes and squama, well visible pulvilli, a transparent triangular anal point, well developed virga, a sternapodeme with oral projections, inferior volsella with a rectangular dorsal lobe, and a gently curved gonostylus without crista dorsalis. The generic diagnosis must be emended, because the costa is moderately extended, the antennal plume is not reduced, and the sternapodeme has only moderately developed anterior projections.

Figures

Figs 13‒19. Lapposmittia succinea (Goetghebuer, 1942). 13 ‒ wing, 14 ‒ pulvilli, 15 ‒ virga, 16 ‒ superior volsella, 17 ‒ anal point, 18 ‒ inferior volsella, 19 ‒ gonostylus.