Trechosiella

Geginat, Gernot, 2013, Taxonomic revision of the African genus Trechosiella Jeannel (Coleoptera: Carabidae: Trechinae), Zootaxa 3716 (3), pp. 441-459: 442-443

publication ID

http://dx.doi.org/10.11646/zootaxa.3716.3.7

publication LSID

lsid:zoobank.org:pub:D8B9E93B-2EC9-4DF8-B2F7-40F39AB0A65B

persistent identifier

http://treatment.plazi.org/id/038D87C5-FFC9-F60F-60D7-F8AF348438F7

treatment provided by

Plazi

scientific name

Trechosiella
status

 

Key to the species and subspecies of the genus Trechosiella 

1 Temporal lobe well developed, smooth; species from southern Africa........................................... 2

- Temporal lobe weakly developed, rugose; species from Tanzania.............................. T. basilewskyi Jeannel 

2 Eyes not protruding, eye diameter smaller than length of temple................................................ 3

- Eyes protruding, eye diameter larger than length of temple.................................................... 4

3 Elytral striae on disc effaced; temple longer than half diameter of eye; microsculpture of elytra strongly transverse, length/ width ratio of mesh approximately 1: 5 to 1: 10 ......................................... T. oligophthalma  spec. nov.

- Elytral striae on disc well discernable;eye diameter subequal to temple length; microsculpture of elytra weakly transverse, length/width ratio of mesh approximately 1: 1 to 1: 2 ............................. T. scotti swartbergensis  subspec. nov.

4 Third elytral stria with two setiferous punctures, one at the level of the anterior quarter, the other posterior of the middle of the elytral disc; 3 rd and 4 th striae distinctly separate in anterior quarter of elytral disc.................................. 5

- Third elytral stria lacking posterior setiferous puncture; 3 rd and 4 th striae converging in anterior quarter of elytral disc.................................................................................... T. endroedyyoungai  spec. nov.

5 Microsculpture of elytra strongly transverse, length/width ratio of mesh approximately 1: 5 to 1: 10; apex of aedeagus tapered (lateral view)........................................................................................ 6

- Microsculpture of elytra less transverse, length/width ratio of mesh approximately 1: 2 to 1: 3; apex of aedeagus blunt...... 7

6 Apex of aedeagus bended bent ventrad, internal sac with multiple tightly packed, minute sclerotized teeth.................................................................................................... T. laetula (Pringuey) 

- Apex of aedeagus straight, internal sac without any internal sclerotized teeth or pieces microstructures........................................................................................................ T. katicola Jeannel 

7 Brachypterous..................................................................... T. scotti scotti (Jeannel) 

- Macropterous, only known from Namibia.................................... T. scotti macroptera Casale  , stat. dem.