A review of the tribes of Deltocephalinae (Hemiptera: Auchenorrhyncha: Cicadellidae)
Author
Zahniser, James N.
C44D6E44-FA1C-4B29-B7BB-FAF5940CD225
Illinois Natural History Survey, Prairie Research Institute, University of Illinois at Urbana-Champaign, 1816 S. Oak St., Champaign, IL 61820, United States of America & urn: lsid: zoobank. org: author: C 44 D 6 E 44 - FA 1 C- 4 B 29 - B 7 BB-FAF 5940 CD 225 & corresponding author e-mail: zahniser @ illinois. edu
Author
Dietrich, Chris H.
82FCB86C-54B4-456A-AE5E-D7847D271CB9
Illinois Natural History Survey, Prairie Research Institute, University of Illinois at Urbana-Champaign, 1816 S. Oak St., Champaign, IL 61820, United States of America & urn: lsid: zoobank. org: author: 82 FCB 86 C- 54 B 4 - 456 A-AE 5 E-D 7847 D 271 CB 9
text
European Journal of Taxonomy
2013
2013-05-29
45
1
211
journal article
22221
http://dx.doi.org/10.5852/ejt.2013.45
a66592b8-63a8-4c2d-9471-e58ddb2c0559
2118-9773
3822710
41B10E4D-7DAB-40CA-A8FE-4ECA078E04A3
Vartini
tribe nov.
urn:lsid:zoobank.org:act:
E1F01DC6-889F-48C3-B0D7-28C87B614F1D
Fig. 56
Type
genus:
Varta
Distant, 1908
.
Diagnosis
Vartini
are medium sized to large, somewhat elongate, usually greenish or bluish leafhoppers, usually with red or orange longitudinal stripes. They can be identified by the produced and pointed head, gena visible behind the eye in dorsal view, elongate frontoclypeus, lorum distant from genal margin, profemur intercalary row setae thick and extending to or beyond middle of profemur, forewings truncate apically, apodemes of male sternite II long, subrectangular, flared apically, and pointed posterolaterally,
connective with anterior arms appressed, and male segment X tube-like and protruding from pygofer and often well-sclerotized.
Description
HEAD. Head narrower than pronotum; acutely or bluntly produced. Discal portion of crown glabrous with radial or longitudinal striae. Anterior margin of head foliaceous or acutely angled with several transverse striae or carinae. Frontoclypeus very long, narrow; texture shagreen; sometimes with median longitudinal carina anterodorsally. Clypellus parallel-sided or widening apically; apex following or slightly surpassing normal curve of gena. Lorum distinctly narrower than clypellus near base; very wellseparated from genal margin.Antennal bases near middle, posteroventral (lower) corners, or anterodorsal (upper) corners of eyes. Antennae long, 1.5 x width of head or more. Gena not incised, slightly incised, or sinuate laterally; visible behind eye in dorsal view; with fine erect seta beside laterofrontal suture. Antennal ledges absent. Ocelli present; close to eyes; on anterior margin of head.
THORAX. Pronotum lateral margin carinate; lateral margin shorter than basal width of eye.
WINGS. Forewing macropterous; truncate apically; appendix absent, reduced, or present and restricted to anal margin; with 3 anteapical cells; veins sometimes obscure; veins not raised; without reflexed costal veins; A1-A2 crossvein absent; apical venation not highly reticulate.
LEGS. Setal bases often darkly colored. Profemur with
AM
1 seta only; intercalary row setae relatively large and thick, extending to or past middle of profemur; row AV with short, stout setae. Protibia dorsal surface rounded, convex; row AD with 1 apical macrosetae; row
PD
with 5 to 9 macrosetae. Metafemur apex macrosetae 2+2+1. Metatarsomere I not expanded apically; plantar setae simple, tapered.
MALE
GENITALIA. Apodemes of sternite II long, subrectangular, flared apically, pointed posterolaterally. Valve articulated with pygofer; lateral margin short, articulating with pygofer at a point. Pygofer basolateral membranous cleft present or absent; macrosetae absent or reduced or present, well differentiated into several rows. Subgenital plates free from each other or fused or partially fused to each other or to valve; often with many scattered macrosetae, or with one to several rows of macrosetae near lateral margin. Style broadly bilobed basally; median anterior lobe pronounced. Basal processes of the aedeagus/connective absent or present, if present then fused to connective or aedeagus. Aedeagus with single shaft and gonopore. Connective anterior arms closely appressed anteriorly, or rarely slightly separated; stem absent or present; articulated with or fused to aedeagus. Segment X tube-like; protruding from pygofer; sometimes with ventral processes.
FEMALE GENITALIA. Pygofer with numerous macrosetae. Ovipositor protruding or not protruding far beyond pygofer apex. First valvula convex; dorsal sculpturing pattern strigate to reticulate; sculpturing reaching dorsal margin; without distinctly delimited ventroapical sculpturing. Second valvula broad, gradually tapered or slightly expanded subapically; without dorsal median tooth; teeth on apical 1/4 to 1/3 or more; teeth small to medium sized, regularly or irregularly shaped.
Geography and ecology
Distribution: Afrotropical, Palearctic, and
Oriental
regions. Linnavuori (1978b) reported
Stymphalus
Stål, 1866
“on sedges and grasses in moist locations”.
Remarks
Vartini
includes 7 genera and 23 species. The tribe is newly described here to include seven genera previously placed in
Scaphytopiini
. The only diagnostic characters that
Vartini
share with
Scaphytopius
are the produced head and very broad gena visible behind the eyes in dorsal view. These two characters tend to co-occur in many deltocephalines that are not related to one another. None of the genera previously included in
Scaphytopiini
that were sampled in phylogenetic analyses here (
Scaphytopius
,
Nesothamnus
,
Japananus
,
Stymphalus
) were found to be closely related to one another. Thus, the aforementioned characters appear to be convergent and not appropriate for sole use in defining tribes of
Deltocephalinae
. The
Vartini
are separated from
Scaphytopiini
here and, based on the number and uniqueness of the characters defining the group, appear to form a monophyletic group. Three characters supporting the group are newly reported here: profemur intercalary row setae relatively thick and extending to or basad of midlength of femur; apodemes of male sternite II long, subrectangular, flared apically, and pointed posterolaterally; male segment X tube-like and protruding from pygofer, often well-sclerotized. Viraktamath (2004) revised the group and several new species have been described since.
Fig. 56.
Vartini
.
A–C
.
Vartalapa robusta
Viraktamath, 2004
.
D–K
.
Varta rubrofasciata
Distant, 1908
.
A–I
. Standard views (see Material & Methods).
J.
Ventral view of base of ♂ abdomen showing long apodemes of sternite II (sternite I obscure).
K
. Ventral view of ♂ pygofer.
Stymphalus
was resolved near some Mukariini (
Mukaria
and
Scaphotettix
) and sister to an undescribed genus from
Thailand
which does not share the diagnostic characters of the tribe listed above. More data are needed to resolve its relationship to other tribes of
Deltocephalinae
.
Selected references
Linnavuori (1978b),
Viraktamath & Anantha Murthy (1999)
, Viraktamath (2004).
Included genera:
Curvimonus
Viraktamath & Anantha Murthy, 1999
placement nov. (transferred from
Scaphytopiini
)
Shivania
Viraktamath, 2004
placement nov. (transferred from
Scaphytopiini
)
Stymphalus
Stål, 1866
placement nov. (transferred from
Scaphytopiini
)
Varta
Distant, 1908
placement nov. (transferred from
Scaphytopiini
)
Vartalapa
Viraktamath, 2004
placement nov. (transferred from
Scaphytopiini
)
Vartatopa
Viraktamath, 2004
placement nov. (transferred from
Scaphytopiini
)
Xenovarta
Viraktamath, 2004
placement nov. (transferred from
Scaphytopiini
)