Cricotopus
Creators: name: Tachibana, Satoru
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Chironomidae
Cricotopus

description: Key to adult males of Cricotopus species near C. (N.) cataractaenostocicola
1 Gonostylus not folded into the inner groove of gonocoxite........................................ Pseudocricotopus
- Gonostylus folded into the inner groove of gonocoxite, usually in most Orthocladinae ............................... 2
2 Pulvilli absent........................................................................................ 3
- Pulvilli present............................................................................... Isocladius
3 Gonocoxite with inner lobe............................................................................. 4
- Gonocoxite without inner lobe............................................................... metatibialis etc.
4 Inner lobe of the gonocoxite single....................................................................... 5
- Inner lobe of the gonocoxite double......................................................... osaruquartus etc.
5 Abdominal tergites almost entirely dark................................................................... 6
- Some abdominal tergites distinctly pale........................................... bifascius or polyannulatus etc.
6 Legs segments almost dark............................................................................. 7
- Tibiae with a long pale ring in the proximal half.................................................. togacutus etc.
7 Anal lobe of wing not strongly inwards.................................................................... 8
- Anal lobe of wing strongly produced inwards...................................................... togaspadix
8 Ninth tergite with a pair of lobes in the middle of posterior margin, bearing strong setae..................... yatabensis
- Ninth tergite with some 10 setae in the middle but without lobes and without setae on posterior margin................. 9
9 Color pale, with body bright yellow, the three mesonotal vittae reddish brown.................... C. (N.) fuscatus Wirth
- Color brown or black................................................................................. 10
10 Setae on abdominal tergites III and IV evenly distributed..................................................... 11
- Setae on abdominal tergites III and IV separated into the median and the lateral groups...................................................................................... C. (N.) lygropis Edwards and C. (N.) nostocicola Wirth
11 Anal point absent and without long hairs on the outside of gonocoxite................................ C. tamapullus - Anal point present and with long hairs on the outside of gonocoxite............................................ 12
12 With middle length hairs near the apex of the inner lobe in the gonocoxite................... C. (N.) shofukuprimus Sasa
- Absence of hairs near the apex of the inner lobe in the gonocoxite................. C. (N.) cataractaenostocicola sp. nov.
description: Published as part of Tachibana, Satoru, 2022, A new species, Cricotopus cataractaenostocicola, living in a cyanobacterial colony on vertical rocky substrates with trickling water film in Japan (Diptera: Chironomidae), pp. 241-255 in Zootaxa 5178 (3) on pages 249-250, DOI: 10.11646/zootaxa.5178.3.3, http://zenodo.org/record/7026071