Taxonomic study of the genus Evergestis Hübner, 1825 (Lepidoptera: Crambidae: Glaphyriinae) in Iran with description of a new species
Author
Alipanah, Helen
Author
Khodadad, Masoumeh
Author
Rajaei, Hossein
Author
Haseli, Mohammad
text
Zootaxa
2018
4420
1
1
33
journal article
30081
10.11646/zootaxa.4420.1.1
a3ea0a39-5d5d-4f18-a4b2-4c3aa667f06f
1175-5326
1247134
70B25E60-2637-4D35-8837-14A0796D82B1
Evergestis affinis
Amsel, 1951
Material examined.
SMNK
:
Paratype
♂
,
Iran
,
Fars
, Straβe Ardekan (presently known as Sepidān) – Talochosroe (an erroneous spelling of Tal Khosrow), Comé (German spelling of Komehr),
3700 m
,
10.viii.1937
, leg. H. G. Amsel, coll. Brandt (ex. coll. H. G. Amsel) (GS: HA-2038).
Distribution.
Iran
: (
Fars
Prov.: Komehr;
type
locality of the species) (
Amsel 1951
,
1961
).
Remarks.
As stated by
Amsel (1951)
, this species is very close to
E. caesialis
externally except for wing's termen, which is more oblique in
E. affinis
than
E. caesialis
. Moreover, ground color of the forewing in
E. affinis
is yellow, whereas it is slightly darker in
E. caesialis
(
Amsel 1951
)
. The same differences are observed in the examined specimens of both species, i.e. the upper- and undersides of both wings of
E. caesialis
are remarkably darker than
E. affinis
(
Figs 1A–D
).
According to
Amsel (1951)
,
E. affinis
and
E. caesialis
could easily be distinguished from each other by the wider uncus and shorter ganthos of
E. affinis
. In the examined specimens, length of the gnathos is one-half and three-fourths of the length of uncus in
E. affinis
and of
E. caesialis
, respectively. Moreover, the following differences in the male genitalia of these two species were recognized:
(1) Neck of the uncus in
E. caesialis
is relatively narrower than in
E. affinis
(
Figs 2A, E, H
) and the shape of uncus tip in lateral view is different in these two species; being more rounded in dorsal surface and truncated distally in
E. affinis
, comparing to
E. caesialis
which resembles as an elongated triangle (
Figs 2B, F
).
(2) In
E. affinis
only few teeth (about six), with almost equal length and considerable distances from each other, are visible on the ventral surface of gnathos. These teeth extended along the shaft towards the middle part. In contrast,
E. caesialis
has more than fiftheen teeth with different sizes on the ventral surface of gnathos. These teeth, which are close to each other and sometimes hardly being distinguished as separate teeth, are not occurred in the distal one-fifth of gnathos (
Figs 2B, G, H
).
(3) In
E. affinis
, distal end of the phallus is almost half length of its proximal end or slightly less, while in
E. caesialis
it is nearly two-thirds of the proximal end (
Figs 2A, E
). Moreover, there are two small clusters of cornuti in distal end of the phallus in
E. affinis
, one being slightly denser than the other; whereas in
E. caesialis
it is consisted of one small cluster (
Figs 2D, I
).
4) Anterior end of juxta in
E. caesialis
is wider than in
E
.
affinis
(
Figs 2C, J
).
The female specimen of
E. affinis
was not available for study.