Endochironomus Kieffer / Synendotendipes Grodhaus (Figs 83, 84)

Head capsule large, yellow, occipital margin dark brown. Antenna 5-segmented, premandible with 2 apical teeth and 1 inner tooth. Mandible with slender apical tooth and 3–4 inner teeth, dorsal tooth pale, hardly visible. Mentum with 3–4 protruding median teeth (central ones lower than outer pairs) and 6 pairs of lateral teeth; the first lower than second and medians. Ventromental plates relatively narrow and gently curved with smooth anterior margin and continuously striated (Fig. 83).

Remarks: Genus Synendotendipes was erected based on immature stages previously placed in Endochironomus (= species group B, Pinder & Reiss, 1983). As the subfossil heads may lack important characters allowing separation of these genera (mandibula, maxilla), it is reasonable to keep both genera together. In specimens where mandible is present, 4 inner teeth is separating Synendotendipes from Endochironomus with 3 inner teeth.

Subfossils were recorded from dystrophic and acidified lakes of the studied region. These finding correspond very well with known distribution of Endochironomus / Synendotendipes in the Tatra Mts. lakes (Novikmec et al. 2015).

One morphotype following Brooks et al. (2007) was found.