Paratanytarsus Thienemann & Bause

Chamutiová, Tímea, Hamerlík, Ladislav & Bitušík, Peter, 2020, Subfossil chironomids (Diptera, Chironomidae) of lakes in the Tatra Mountains an illustrated guide, Zootaxa 4819 (2), pp. 216-264 : 256-257

Paratanytarsus Thienemann & Bause ( Figs 99–102 )

Head capsules yellow with dark brown occipital margin. Occipital arch is deeply incised, plate absent. Antenna place on tall pedestal without any projections. Lauterborn organs sessile or on very short pedicels. Premandible bifid. Dorsal mandibular tooth, apical tooth and 2–3 inner teeth all dark brown. Median tooth of mentum usually rounded, occasionally notched laterally, 5 pairs of lateral teeth are present, all teeth uniform in colour, dark brown. Ventromental plates close together medially, each plate slightly longer than width of mentum.

Remarks: Subfossil head capsules of Paratanytarsus resembles Micropsectra and Tanytarsus , but Paratanytarsus can be distinguished from both by the combination of the deeply incised occipital arc, the short antennal pedestal and absence of tooth or spur on it. Another useful diagnostic feature is the uniformly coloured mentum with all teeth dark, compared to the paler median part of mentum in Micropsectra and Tanytarsus .

Currently, Paratanytarsus austriacus (Kieffer, 1924) and P. laccophilus (Edwards, 1929) are known from the Tatra Mts. lakes ( Giłka 2007; Novikmec et al. 2015).

Two morphotypes were identified.

Figures

FIGURES 99–104. Paratanytarsus austriacus-type: 99—head capsule. P. austriacus-type: 100—mandible. Paratanytarsus pencillatus-type: 101—head capsule. P. penicillatus-type: 102—mandible. Tanytarsus lugens-type: 103—head capsule. T. lugens-type: 104—mandible.