Contributions to the study of the subtribe Eremophlepsiina Dmitriev, 2002 (Hemiptera: Cicadellidae: Deltocephalinae: Opsiini)
Author
Tishechkin, Dmitri Yu.
text
Zootaxa
2023
2023-04-21
5270
3
573
583
http://dx.doi.org/10.11646/zootaxa.5270.3.8
journal article
254994
10.11646/zootaxa.5270.3.8
2e5ab170-748c-476f-a1f1-1a20765bc15b
1175-5326
7863579
F05A4310-0B0B-46A5-8EC0-72FEC9F52410
Eremophlepsius sexnotatus
Kusnezov, 1929
(
Figs. 4–7
,
23–34, 37–39
,
41–44
)
E. parvulus
Dlabola, 1961
,
syn. n.
Material examined.
Several series of specimens from southern
Turkmenistan
and southeastern
Kazakhstan
were studied.
Description.
Pale yellowish with whitish forewings. Head with four black spots on fore margin, two spots in middle of crown on both sides of midline and two spots on hind margin. Pro- and mesonotum with numerous small dark spots of variable shape and size. Forewings with brown veins, darkened apices and fine line or speckled pattern in some cells; transverse veins on anterior margins broadly bordered with brown (
Figs. 4–7
).
Ovipositor sometimes extends beyond forewings (
Fig. 5
).
In aedeagus shape, similar to
E. rohdendorfi
but differs by stem apices with wider teeth and rounded outer margins and by basal hook-like processes with shorter tips (
Figs. 23–26, 28–31
). Basal processes can be situated close to penis stems (
Fig. 26
) or more dorsally (
Fig. 24
); due to this, lateral view of penis varies greatly (
Figs. 23– 26
). Subgenital plates distinctly longer and styles narrower than in
E. rohdendorfi
(
Figs. 37–38
). Pygofer lobes are elongated at ends into narrow lobes, with ventral processes pointed and strongly bent dorsally (
Fig. 39
). In
Dubovsky (1966)
, drawings of the aedeagus somewhat differ from our photographs (
Figs. 27, 32
), whereas drawings of the style and pygofer lobe exactly match our specimens.
Body length:♁,
3.8–4.1 mm
;
♀
(to the ends of forewings or ovipositor if extends beyond forewings),
4.4–4.7 mm
.
Male calling signal.
Signals of
one male
from southeastern
Kazakhstan
(
Urzharsky Region
,
27 km
south of
Taskesken
,
Artemisia
sp.
and other herbs in the steppe on the riverbank,
24. VI. 2022
, recording at 32
oC
) were investigated (
Fig. 40
)
.
Calling signal is a phrase lasting from 6–7 up to 10–12 s in our recordings and consisting of uniform syllables (
Figs. 41–44
). Syllable repetition period averages 0.95–
1.28 s
. Syllable duration averages 0.27–
0.46 s
. Each syllable consists of partially merged pulses more distinct in its initial part (
Figs. 43–44
); in the end part of a phrase, pulses in syllables sometimes are almost indistinct.
Distribution.
Steppes and semideserts of
Kazakhstan
,
Kyrgyzstan
,
Uzbekistan
,
Turkmenistan
, and
Tadzhikistan
. Despite its wide distribution,
E. parvulus
is a rare and sporadically occurring species.
Remarks.
The description of appearance and coloration of
E. parvulus
Dlabola, 1961
corresponds exactly to
E. sexnotatus
. The aedeagus of
E. parvulus
in dorsal view also almost does not differ from the aedeagus of
E. sexnotatus
(cf.
Figs. 28–31 and 34
). For this reason, we consider
E. parvulus
a junior synonym of
E. sexnotatus
. The drawing of the aedeagus in lateral view in
Dlabola (1961)
(
Fig. 33
) is similar to that of
Dubovsky (1966)
(
Fig. 27
) and was probably taken from the same angle.
Listed as
Phlepsius sexnotatus
in
Metcalf (1967)
and
McKamey (2000)
, but as
Eremophlepsius sexnotatus
in
Dubovsky (1966)
,
Nast (1972)
, and
Zahniser (2007
–present).
Genus
Pseudo
p
hlepsius
Zachvatkin, 1924