New and less known Orthoptera (Insecta) from the island of Socotra (Yemen)
Author
Massa, Bruno
text
Zootaxa
2009
2132
53
64
journal article
10.5281/zenodo.188430
d3ac7e49-ff7a-47e2-8cdf-3016536aef84
1175-5326
188430
Paratettix subpustulatus
(Walker, 1871)
Material examined
.
Socotra
, Wadi Zerig
8.IV.2008
, B.Massa (43, 3Ƥ, 1 nymph) (33, 2Ƥ in coll. H.Devriese).
Remarks
.
Krauss (1907)
reported
Paratettix scaber
(Thunberg, 1815)
from
Socotra
, but subsequently other authors did not identify Socotran specimens because of the difficulty in understanding the taxonomy of African
Paratettix
(see
Uvarov & Popov 1957
, who reported
Paratettix
sp. on Hadibou plain). Specimens here listed have been identified by Hendrik Devriese, who sent me the following considerations: “this is a very common species in Africa, but its status is not yet very clear. Indeed, this species, that was called
Paratettix scaber
by the late K.Günther in his revision of the African fauna, belongs to a complex of forms with a very high variability. In
Paratettix
, they are characterized by a frontal costa that is extending only slightly before the eyes and by unbanded tibia of the hind legs. There are at least three good species in the group: the real
Paratettix scaber
, which is restricted to the high grounds and mountains of Southern Africa,
Paratettix royi
(Günther, 1979)
, which occurs in Western Africa and
Paratettix subpustulatus
. Probably the Asiatic
Paratettix histricus
(Stål, 1861)
, sometimes placed in
Euparatettix
, belongs to the same group. The status of another taxon,
Paratettix cinereus
Bolivar, 1887
from
Madagascar
, is not clear. There are also animals with a short pronotum on the high mountanis of Eastern Africa (
Paratettix ruwenzoricus
Rehn, 1914
) of which it is not yet known if they are a separate species or a brachypronotal form of
Paratettix subpustulatus
. After having studied several hundred specimens from numerous places, I have concluded provisionally that
Parattetix
subpustulatus
is a very variable and widespread species. There are populations with very small animals, like specimens from
Socotra
, and I have seen others from the
Seychelles
. Perhaps, the island populations have small specimens, but I have also seen small ones from some regions in Africa, and on Bioko, on the contrary, they are big. All this has to be analyzed by other methods (molecular or enzym analysis) before a definite conclusion can be drawn” (H. Devriese, pers. comm.).