Subfossil chironomids (Diptera, Chironomidae) of lakes in the Tatra Mountains an illustrated guide Author Chamutiová, Tímea 0000-0002-8439-4582 peter. bitusik @ umb. sk; https: // orcid. org / 0000 - 0002 - 8439 - 4582 peter.bitusik@umb.sk Author Hamerlík, Ladislav 0000-0002-0803-8981 ladislav. hamerlik @ umb. sk; https: // orcid. org / 0000 - 0002 - 0803 - 8981 ladislav.hamerlik@umb.sk Author Bitušík, Peter 0000-0003-4375-7727 timea. chamutiova @ umb. sk; https: // orcid. org / 0000 - 0003 - 4375 - 7727 timea.chamutiova@umb.sk text Zootaxa 2020 2020-07-23 4819 2 216 264 journal article 8924 10.11646/zootaxa.4819.2.2 8e35f5ad-f97e-432a-9005-3da1fd0bb897 1175-5326 4396828 2459A542-6CF2-4545-9E6F-262C68838D99 Parorthocladius Thienemann ( Fig. 59 ) Head capsule brownish, triangular in shape. Occipital margin dark brown. Antenna 5-segmented. Premandible simple, with one apical tooth. Apical mandibular tooth shorter than combined width of 3 inner teeth. Mentum subtriangular with three equal sized median teeth and 4 pairs of lateral teeth steeply sloping reminding a ladder. Ventromental plates narrow with beard consisting of a tuft of long setae (often missing in the subfossil material). Remarks: The larval head of Parorthocladius and Synorthocladius are very similar, however Synorthocladius has two very long median teeth on mentum, while Parorthocladius three (and not as long). The only known species from the Tatra Mts. lakes is P. nudipennis (Kieffer, 1908) ( Bitušík 2004 ) . Subfossil remains were found rarely.