Cladopelma Kieffer, 1921

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 : 249

Cladopelma Kieffer ( Fig. 76 )

Head capsule light, greyish with brownish patch on submentum, occipital margin dark brown. Antenna with 5 segments, premandible bifid. Dorsal tooth on mandible absent, 1–2 flat inner teeth present. Mentum with usually double median tooth (or at least notched medially) and 7 pairs of lateral teeth. Outermost lateral teeth set forward in relation to slope of remaining lateral teeth, while 5 th and 7 th lateral are short and the 6 th lateral is taller and broader. Ventromental plates broad, with fine striation distinct at base, anterior margin often crenulated.

Remarks: Mentum with double median tooth and more or less separated group of outer lateral teeth is distinctive for Cladopelma . Cryptotendipes and Microchironomus have a similar pattern of the lateral teeth, however median tooth is distinctly trifid in Microchironomus while single in Cryptotendipes ; if laterally notched it may appear trifid but the mentum is much steeper than in Cladopelma .

Subfossil remains were recorded from two dystrophic lakes situated in the forest zone of the Tatra Mts.

One morphotype was recognized ( Brooks et al. 2007).

Figures

FIGURES 72–78. Chironomus anthracinus-type: 72—head capsule (arrow indicates two inner teeth of the mandible). C. anthracinus-type: 73—head capsule (arrow indicates three inner teeth of the mandible). Chironomus plumosus-type: 74—head capsule (arrow indicates three inner teeth of the mandible). C. plumosus-type: 75—head capsule (arrow indicates two inner teeth of the mandible). Cladopelma lateralis-type: 76—head capsule. Dicrotendipes nervosus-type: 77—frontal apotome (arrow indicates crenulated anterior margin). Dicrotendipes notatus-type: 78—frontal apotome (arrow indicates antero-median fenestra).