Heterotrissocladius Spärck
|
publication ID |
https://doi.org/ 10.11646/zootaxa.4819.2.2 |
|
publication LSID |
lsid:zoobank.org:pub:2459A542-6CF2-4545-9E6F-262C68838D99 |
|
DOI |
https://doi.org/10.5281/zenodo.4437263 |
|
persistent identifier |
https://treatment.plazi.org/id/03F487F1-FFA8-FFB1-FF22-FAF4AD35F801 |
|
treatment provided by |
Plazi |
|
scientific name |
Heterotrissocladius Spärck |
| status |
|
Heterotrissocladius Spärck View in CoL View at ENA ( Figs 48–50 View FIGURES 43–48 View FIGURES 49–53 )
Head capsule yellow, occipital margin pale or darkened. Antenna 7-segmented, seventh segment vestigial ( Fig. 48 View FIGURES 43–48 ). Premandible with two indistinct teeth ( Fig. 49 View FIGURES 49–53 ). Apical mandibular tooth shorter than combined width of 3–4 inner teeth. Mentum with two (rarely one) median teeth (sometimes accessory teeth are present) and 5 pairs of lateral teeth. First and second lateral teeth clearly longer than other three lateral teeth. Ventromental plates distinct, bulbous, extended beyond margin of mentum.
Remarks: Heterotrissocladius is similar to Paratrissocladius , however the latter has 4 lateral mental teeth. Subfossil remains without antennae and labro-epipharyngeal region could be confused with Psectrocladius and Chaetocladius that have distinct ventromental plates. However, the outmost lateral tooth is usually reduced in Chaetocladius , and ventromental plates of obviously triangular shape with weak beard in Psectrocladius .
One morphotype was distinguished.
Heterotrissocladius marcidus - type ( Fig. 50 View FIGURES 49–53 )
Mentum with two median teeth. Submentum entirely pigmented, darker than the rest of the head capsule.
Remarks: Heterotrissocladius marcidus (Walker, 1856) is the only known species in the Tatra Mts. lakes, and it is considered to be the most common chironomid inhabiting the Tatra Mts. lakes ( Bitušík et al. 2006a).
Subfossil remains were abundant in most of the studied lakes.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.