Checklist of the Collembola: Key to the Ptenothrix denticulata look-alikes from Taiwan and Japan |
This key is still under construction. Note that missing figures will be provided as soon as possible. Currently, the key is in the feasibility study phase to find out how to integrate in the checklist in a modular way a key that has been generated with DELTA.
Hsin-Ju Cheng,
Institute of Ecology and Evolutionary Biology, National Taiwan University, Taiwan
Frans Janssens,
Department of Biology, University of Antwerp, Antwerp, B-2020, Belgium
1(0). Cephalic post-ocular patches interconnected by transverse pattern (fig.1a)........................................... 2 Cephalic post-ocular patches not interconnected (fig.1b)..... 4 |
|
2(1). Large abdomen dorsal median longitudinal pattern quadripartite (fig.2b); small abdomen at junction to large abdomen dorsally with short median transverse stripe (fig.3b)............ sp.3 Large abdomen dorsal median longitudinal pattern tripartite (fig.2a); small abdomen at junction to large abdomen dorsally without short median transverse stripe (fig.3a)............ 3 |
|
3(2). Midfoot unguiculus with one basal spine (fig.4a); small abdomen dorsally with fuzzy median transverse pattern at junction to large abdomen (fig.5b).................................. sp.4 Midfoot unguiculus with two basal serial spines (fig.4b); small abdomen dorsally without median transverse pattern at junction to large abdomen (fig.5a)........................ denticulata 1 |
|
4(1). Head vertex with median longitudinal stripe running to neck (fig.6b)................................................... 5 Head vertex without median longitudinal stripe running to neck (fig.6a)................................................... 6 |
|
5(4). Small abdomen with irregular rectangular patch having two white spots (fig.7b).......................................... sp.1 Small abdomen with regular rectangular patch (fig.7a)..... sp.7 |
|
6(4). Cephalic post-ocular patch connected to eyepatch with extern curved longitudinal pattern (fig.8a); small abdomen posterior part light (fig.9b)................ denticulata var. catenata Cephalic post-ocular patch connected to eyepatch with intern curved longitudinal pattern (fig.8b); small abdomen posterior part dark (fig.9a)...................................... sp.2 |
|
Endnotes
1 P. denticulata Cheng & al (2022) = P. sp.1 ???