Cohnia inca ( Rehn 1955 )

Braun, Holger, 2011, A brief revision of brachypterous Phaneropterinae of the tropical Andes (Orthoptera, Tettigoniidae, Odonturini), Zootaxa 2991, pp. 35-43: 41

publication ID

http://doi.org/ 10.5281/zenodo.207670

persistent identifier

http://treatment.plazi.org/id/03F46E01-FFDE-FFFB-FF42-2A8FFDE4FCD3

treatment provided by

Plazi

scientific name

Cohnia inca ( Rehn 1955 )
status

comb. nov.

Cohnia inca ( Rehn 1955)  comb. nov.

Dichopetala inca Rehn 1955 

The unique male type specimen with tegmina slightly shorter than the pronotum is from the Andes of central Peru, Provincia de Huánuco, Conchamarca, about 2600 m. Apparently no further records are published. Rehn 1955 compared this species in his description with the only other Dichopetala  species known from South America at the time, D. andeana  , which has been transferred to the new genus Cohnia ( Buzzetti et al. 2010)  . According to the authors a dorsal sulcus after the pronotum’s second third is diagnostic for this genus, making the metazona only half as long as the prozona. This is not very well visible in the included photos. It almost appears that the real demarcation of the metazona is at the middle of the pronotum, probably the “merest suggestion of median indentation” of the entire pronotal disk mentioned in the original description of D. andeana ( Hebard 1924)  . Nevertheless, there seems to be another little sulcus, surmisable at best, and it is also just discernible on the small photos of the male holotype of D. inca  in OSF. The specimen is also very similar to the photograph of a live male of Cohnia andeana  in that paper. The very verbose description of Rehn does not mention any major differences between D. inca  and D. andeana  that would justify to keep them in different genera. Only the lateral pronotal lobes are slightly shallower in D. inca  . Since the separation of Cohnia  from Dichopetala  seems all in all conclusive, the species is here transferred to the new genus as well.

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Orthoptera

Family

Phaneropteridae

Genus

Cohnia

Loc

Cohnia inca ( Rehn 1955 )

Braun, Holger 2011
2011
Loc

Cohnia (

Buzzetti et al. 2010
2010
Loc

Dichopetala inca

Rehn 1955
1955
Loc

D. andeana (

Hebard 1924
1924