Seven new species and new distributions of Old World Chiasmini (Hemiptera: Cicadellidae: Deltocephalinae), with a redescription, key to genera, and species checklist for the tribe
Author
Zahniser, James N.
text
Zootaxa
2008
1808
1
32
journal article
10.5281/zenodo.182734
3c7a17bb-e766-45ef-81ef-603405a7bac2
1175-5326
182734
Gurawa minorcephala
Pruthi
(
Figs. 77–85
)
Material examined.
One male and one female:
INDIA
: Karnataka / Nandi Hills
1467m
/ SV101
17.VII.1979
/ S. Viraktamath Coll. The female genitalia are figured here for the first time.
Discussion.
Baileyus
and
Gurawa
are related genera from
India
and were included in Aphrodini by
Oman
et al. (1990)
. Based upon examination of specimens of
G. m i n o rc e p h a l a
Pruthi and figures provided by
Pruthi (1930)
, they are included here in Chiasmini.
Hamilton (1975b)
included
Baileyus
and
Gurawa
in his interpretation of Eupelicini, which also included
Chiasmus
. He considered the shape of the head, position of ocelli, raised wing veins, and some chaetotaxic characters to be diagnostic for the group (
Hamilton, 1975a
). However characters supporting a relationship between
Baileyus
,
Gurawa
, and/or
Chiasmus
and other Chiasmini (as circumscribed here) and not with
Eupelix
Germar
include: hinged aedeagus in
Chiasmus
; anterior arms of connective closely appressed in all three genera (shared with all Chiasmini except
Leofa
,
Nephotettix
,
Omaranus
,
Picchusteles
, and
Exitianus
); diagnostic characters of the female genitalia as described for the tribe above.
Eupelix
has the first valvula with reticulate sculpturing and second valvula with irregularly shaped teeth. Although there are similarities in the external characters of the head and of the chaetotaxy between
Gurawa
,
Baileyus
,
Chiasmus
, and
Eupelix
, the combination of characters outlined here for Chiasmini more strongly suggest that the former three genera belong in the same tribe, not including
Eupelix
.
Gurawa
and
Baileyus
do not have the characteristic hinged aedeagus of other Chiasmini, but share characters of the first and second valvulae with other Chiasmini. Additionally, DNA sequence data (unpublished) gathered for at least on member of most genera of Chiasmini (
Gurawa
,
Baileyus
,
Omaranus
, and
Picchusteles
not sampled) and numerous outgroup taxa, including
Eupelix
, suggest that
Eupelix
is not closely related to any sampled chiasmine, including
Chiasmus
.