Cobbia bengalensis sp. nov. (Xyalidae: Monhysterida) from an eroding island of Sundarban, India
Author
Datta, Tridip Kumar
Author
Bhowmik, Moumita
Author
Choudhury, Amalesh
text
Zootaxa
2018
2018-07-09
4444
2
179
188
journal article
29710
10.11646/zootaxa.4444.2.6
4c6c0867-c2bf-4e04-b108-9c4d62953bd1
1175-5326
1309608
5EEA178A-60E9-4356-A3D8-8705B59344D3
Key to valid species of
Cobbia
Key was primarily followed after
Wieser (1959)
and Lo Russo & Pastor de
Ward (2012)
.
1. Tail elongated flagelliform.............................................................................. 2
- Tail non-flagelliform................................................................................... 4
2. Buccal cavity with three subequal teeth located at the same height; anterior sensilla arrangement 6+10..................................................................................................
C. triodonta
Filipjev, 1918
- Buccal cavity with three unequal teeth located at different height; anterior sensilla arrangement 6+12................... 3
3. Longest anterior sensilla>2 (2.3–2.5) times of head diameter; distance of amphid from the anterior end is 3.8–4 times of amphid diameter.............................................................
C. trefusiaeformis
de
Man, 1907
-
Longest anterior sensilla <2 (1.3) times of head diameter; distance of amphid from the anterior end is <3 times of amphid diameter..........................................................................
C. urinator
Wieser, 1959
4. Anterior sensilla arrangement 6+10....................................................................... 5
- Anterior sensilla arrangement 6+12....................................................................... 8
5. Amphid located>30 µm from the anterior end...................................
C. caledonia
Warwick & Platt, 1973
- Amphid located <30 µm from the anterior end.............................................................. 6
6. Subterminal setae adjacent to tail terminus present........................................................... 7
- Subterminal setae adjacent to tail terminus absent..........................................
C. bengalensis
sp. nov.
7. Male and female tail conico-cylindrical and of similar length; cephalic sensilla <1.5 of head diameter..............................................................................................
C. sinica
Huang & Zhang, 2010
- Male tail conical, female tail conico-cylindrical and longer than male; cephalic sensilla>2 of head diameter................................................................................................
C. dentata
Gerlach, 1953
8. Gubernaculum with dorsal apophysis...................................................
C. truncata
Wieser, 1959
- Gubernaculum without apophysis................................
C. macrodentata
Lo Russo & Pastor de
Ward, 2012