Signoretiinae Baker, 1915, 1859

Takiya, Daniela M., Dietrich, Christopher H. & Viraktamath, Chandra A., 2013, The unusual Afrotropical and Oriental leafhopper subfamily Signoretiinae (Hemiptera, Cicadellidae): taxonomic notes, new distributional records, and description of two new Signoretia species, ZooKeys 319, pp. 303-323 : 304-306

publication ID

https://dx.doi.org/10.3897/zookeys.319.4326

publication LSID

lsid:zoobank.org:pub:909A482E-AF42-48C4-8613-21EF02CEC066

persistent identifier

https://treatment.plazi.org/id/62F1230F-0FFF-58F1-8E68-21A7575BCEAC

treatment provided by

ZooKeys by Pensoft

scientific name

Signoretiinae Baker, 1915
status

 

Signoretiinae Baker, 1915 Figs 1 View Figure 1 -42 View Figure 37–42

Phlogisinae = Linnavuori, 1979

Description.

Medium-sized, cylindrical leafhoppers ( Figs 2-14 View Figures 2–14 ). Head ( Figs 2-14 View Figures 2–14 ) broader than pronotum; ocelli visible in dorsal aspect; frontoclypeus expanded with prominent transverse muscle scars; lateral frontal sutures extended ventromesad of ocelli; antennal ledges well developed; antennae subequal to or longer than width of head; anteclypeus convex and tapered from base to apex; lorum short, narrow, well separated from genal margin, partly bordering frontoclypeus; gena slightly emarginate below eyes, exposing proepisternum; rostrum tapered, surpassing front trochanters.

Pronotum ( Figs 2-5, 7-11, 13, 14 View Figures 2–14 ) greatly enlarged, strongly convex, distinctly punctate, weakly produced anterad, extended posterad to scutellar suture. Forewings ( Figs 15, 17, 19 View Figures 15–20 ) macropterous with venation distinct and opaque sclerotization, if present, limited to basal third; vein R with two (R1 not visible as separate vein) or three branches; crossvein s present (outer anteapical cell closed); inner apical cell elongate, parallel-sided, extended to wing apex. Hind wings ( Figs 16, 18, 20 View Figures 15–20 ) with venation complete; submarginal vein well separated from wing margin. Forelegs with femur with AM1 weakly developed or absent, intercalary row and distal half of AV well differentiated, each with several setae arranged in single row; tibia cylindrical, AD and PD undifferentiated. Hind legs with femur with macrosetal formula 2+0; tibia with macrosetae of dorsal rows reduced in size and number; tarsomere I without dorsoapical pair of macrosetae; pecten with 2 platellae.

Male genital capsule ( Figs 21-24 View Figures 21–30 , 29 View Figures 21–30 - 42 View Figure 37–42 ) with valve articulated or fused laterally to pygofer; pygofer without distinct membranous clefts near base; segment X very large, well sclerotized, with or without processes; subgenital plates digitiform, broadest at base, usually with numerous fine setae dorsally but only rarely with well differentiated macrosetae; connective Y-shaped; style sigmoid; with or without sclerotized dorsal connective or other sclerotized processes between anal tube and aedeagus usually present.

Female ovipositor ( Figs 26, 27 View Figures 21–30 ) elongate, variable in shape and dentition.

Distribution.

Afrotropical and Oriental.

Notes.

With the exception of the proconiine sharpshooter genus Tretogonia Melichar, 1926 and the recently described dikraneurine ( Typhlocybinae ) genus Sweta Viraktamath & Dietrich 2011, Signoretiinae are the only leafhoppers with fully developed wings that have the pronotum extended to the scutellar suture. Viraktamath and Dietrich (2011) discussed several characters supporting the placement of Sweta in Typhlocybinae rather than Signoretiinae . Interestingly all these leafhoppers have the long pronotum distinctly punctate.

Nothing is known about the ecology or feeding behavior of Signoretiinae , although the strongly convex or inflated face suggests that they preferably feed on xylem sap.

Key to tribes and genera of Signoretiinae

1 Dorsal coloration black ( Figs 2-7 View Figures 2–14 ); crown and frontoclypeus without carinae ( Figs 2-7 View Figures 2–14 ); ocelli on crown, each equidistant to adjacent anterior eye angle and other ocellus ( Figs 2, 4 View Figures 2–14 ); forewing with 3 closed anteapical cells ( Fig. 15 View Figures 15–20 ); hind wing submarginal vein not extended onto jugum ( Fig. 16 View Figures 15–20 ); hind tibia with macrosetae in row PD; male pygofer without posteroventral process ( Fig. 21 View Figures 21–30 ); valve fused laterally to pygofer ( Fig. 21 View Figures 21–30 ) Phlogisini , 2
1' Dorsal coloration usually white or yellow ( Fig. 8-14 View Figures 2–14 ); crown with transverse basal carina between ocelli ( Figs 8, 10, 13 View Figures 2–14 ); ocelli on crown-face transition, distinctly closer to adjacent eye angle than to median line of crown ( Figs 8, 10, 13 View Figures 2–14 ); frontoclypeus with complete median longitudinal carina ( Figs 9, 12, 14 View Figures 2–14 ); forewing with only outer anteapical cell closed, inner and median anteapical cells open at base ( Figs 17, 19 View Figures 15–20 ); hind wing submarginal vein extended onto jugum ( Fig. 18, 20 View Figures 15–20 ); hind tibia without macrosetae in row PD; male pygofer with posteroventral process ( Figs 31, 34 View Figures 31–36 , 37 View Figure 37–42 ); valve not fused laterally to pygofer, articulated by membranous connection ( Fig. 31 View Figures 31–36 ) Signoretiini , 3
2 Head in profile with lower part of clypeus distinctly produced and angulate, forming shelf over anteclypeus ( Fig. 3 View Figures 2–14 ); frontoclypeus with transverse carina ventrally and median longitudinal carina dorsally ( Fig. 3 View Figures 2–14 ); gena with conspicuous long, pale setae ( Fig. 3 View Figures 2–14 ) Chouious
2' Head in profile evenly rounded, with lower part of frontoclypeus continuing contour of anteclypeus ( Figs 6, 7 View Figures 2–14 ); face without carinae ( Fig. 6 View Figures 2–14 ); gena without conspicuous long, pale setae ( Figs 5, 6 View Figures 2–14 ) Phlogis
3 Pronotum with complete paired longitudinal carinae ( Fig. 8 View Figures 2–14 ); forewings with claval veins fused for one-third of their distance ( Fig. 17 View Figures 15–20 ) Preta
3' Pronotum with or without incomplete paired longitudinal carinae at basal third ( Figs 10, 13 View Figures 2–14 ); forewings with claval veins separate ( Fig. 19 View Figures 2–14 ) Signoretia

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Hemiptera

Family

Cicadellidae