Coenagrion
|
publication ID |
https://doi.org/ 10.5281/zenodo.203945 |
|
DOI |
https://doi.org/10.5281/zenodo.6184279 |
|
persistent identifier |
https://treatment.plazi.org/id/2945473E-F87C-743D-FF12-FAA16A91CBC0 |
|
treatment provided by |
Plazi |
|
scientific name |
Coenagrion |
| status |
|
Key to Chinese Coenagrion View in CoL species
1 Strong basal teeth of cerci present ( Figs. 1, 7, 10 View FIGURES 1 – 11 )............................................................ 2
- No basal teeth on cerci................................................................................. 5
2 Abdomen blue laterally; paraprocts bifurcate with the upper branches slim, as long as the lower ones, truncated apically ( Fig. 11 View FIGURES 1 – 11 ........................................................................................ C. lunulatum View in CoL
- Abdomen black laterally; paraprocts not bifurcate............................................................ 3
3 Paraprocts longer than cerci; apical segment of genital ligula with a pair of flagella-like apical lobes and a pair of short spine- like lateral lobes ( Figs. 12–13 View FIGURES 12 – 33 )................................................................. C. aculeatum View in CoL
- Paraprocts subequal than cerci; apical segment of genital ligula with only one pair of apical lobes...................... 4
4 Blue occipital bar present; thorax black ventrally; apical lobes of genital ligula leaf-like ( Figs. 21–22 View FIGURES 12 – 33 )............ C. hylas View in CoL
- Occipital bar absent; thorax pale ventrally; apical lobes of genital ligula flagella-like ( Figs. 29–30 View FIGURES 12 – 33 )....... C. tengchongensis View in CoL
5 Stout apical teeth present on upper branch of bifurcate cerci ( Figs. 4–5 View FIGURES 1 – 11 )........................................... 6
- No apical teeth on upper branch of bifurcate cerci............................................................ 9
6 Cerci less than 0.5 length of paraprocts....................................................................7
- Cerci longer than 0.5 to approximately as long as paraprocts...................................................8
7 Apical segment of genital ligula ovoid, poorly sclerotized, with one pair of short leaf-like apical lobes ( Fig. 16 View FIGURES 12 – 33 ).... C. glaciale View in CoL
- Apical segment of genital ligula shield-like, strongly sclerotized, with one pair of flagella-like apical lobes ( Figs. 17–18 View FIGURES 12 – 33 ).............................................................................................. C. hastulatum View in CoL
8 Postocular spots narrow, comma-like; apical segment of genital ligula shield-like with one pair of curled flagella-like apical lobes ( Figs. 14–15 View FIGURES 12 – 33 ).......................................................................... C. ecornutum View in CoL
- Postocular spots almost circular; Head of genital ligula shield-like with one pair of linear flagella-like apical lobes ( Figs. 25– 26 View FIGURES 12 – 33 )...................................................................................... C. lanceolatum View in CoL
9 Apical lobes of genital ligula broad and long, longer than apical segment of genital ligula ( Figs. 19–20 View FIGURES 12 – 33 )........ C. holdereri View in CoL
- Apical lobes of genital ligula narrow and short ( Figs. 23–24 View FIGURES 12 – 33 ), shorter than apical segment of genital ligula..... C. johanssoni View in CoL
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.