Platyjassini Evans, 1953,

Dietrich, Christopher H., Magalhães, Raysa Brito de & Takiya, Daniela M., 2020, Revision of the endemic Malagasy leafhopper tribe Platyjassini (Hemiptera: Cicadellidae: Iassinae), European Journal of Taxonomy 695, pp. 1-89: 3-10

publication ID

https://doi.org/10.5852/ejt.2020.695

publication LSID

lsid:zoobank.org:pub:DC24EAB0-DCF5-44A8-B1A0-82BF25D280C2

DOI

http://doi.org/10.5281/zenodo.4342129

persistent identifier

http://treatment.plazi.org/id/03A587FC-FF89-B528-FDE6-834EFA8D525B

treatment provided by

Valdenar

scientific name

Platyjassini Evans, 1953
status

 

Tribe Platyjassini Evans, 1953 

Platyjassini Evans, 1953: 113  (type genus: Platyjassus Evans, 1953  ).

Description

HABITUS. Medium-sized to large (4.9–19.0 mm) pale yellow (green in life) or brown leafhoppers, with or without red, yellow or brown markings. Body moderately to strongly depressed ( Figs 1–3View FigView FigView Fig).

HEAD. With crown flat to slightly convex, usually produced, with two or more transverse carinae delimiting crown-face transition ( Figs 23View Fig D–F). Ocelli on crown well separated from anterior margin and eyes. Face ( Figs 23View Fig D–E) flattened to slightly convex; antenna inserted near anterodorsal corner of eye, shorter than head width; antennal ledge oblique, sharply carinate but not concealing antennal base, or amalgamated with marginal rim of crown; lateral frontal sutures absent or extended only to dorsal margin of face; gena slightly to strongly emarginate below eye, partially to completely concealing proepisternum; lorum flat, not extended to lateral margin of face; anteclypeus flat to slightly convex, distinctly broadened distally; rostrum short, not extended beyond middle coxae.

THORAX. Pronotum ( Figs 1–3View FigView FigView Fig) with transverse striations indistinct to well developed, lateral margins carinate and slightly to strongly divergent posterad of eyes, usually wider than head. Forewing venation ( Fig. 23GView Fig) including at least one s, two r-m and three m-cu crossveins, appendix well developed, much wider than inner apical cell, extended to or near wing apex. Hindwing venation complete, with R4+5 and M1+2 partially ( Fig. 23HView Fig) to completely confluent ( Fig. 23IView Fig). Front femur with AM1 well developed, other setae of AM poorly differentiated or absent; row IC uniseriate or with setae scattered near apex; AV usually with several long, stout setae; tibia cylindrical or with dorsal surface somewhat flattened, row PD with widely spaced macrosetae; AD weakly differentiated; ventral rows moderately to well differentiated. Middle femur usually with several widely spaced macrosetae in AD and PD. Hind femur macrosetal formula usually 2+ 2+1, with penultimate pair close-set; supernumerary macrosetae sometimes present; tibia with all macrosetal rows well differentiated and extended for nearly full length of tibia, PD macrosetae more numerous and usually slightly longer than in AD; tarsomere I with dorsoapical pair of macrosetae, plantar rows variably developed, pecten with four or more platellae.

ABDOMEN. Male abdomen with 2S apodemes usually well developed, capitate ( Fig. 21EView Fig); sternite VII enlarged, posterior margin truncate, slightly produced or slightly emarginate, concealing at least basal half of subgenital plates with genital capsule in resting position. Pygofer ( Fig. 21FView Fig) broadly fused to valve, base well sclerotized dorsally, lobes with numerous scattered macrosetae in distal half, with or without appendages. Subgenital plates ( Fig. 21GView Fig) separate to base, freely articulated to valve, narrow at base, broadened toward middle, then tapered to slightly compressed apices, usually extended to or near pygofer apex, with or without macrosetae, usually with some long, fine setae along dorsolateral margin. Style ( Fig. 19HView Fig) narrow and sinuate basally, with short apodeme and elongate apophysis often bearing denticuli ventrally. Connective ( Figs 19HView Fig, 20HView Fig) with median anterior lobe variably developed, articulated to aedeagus. Aedeagus with dorsal apodeme usually well developed, shaft usually curved dorsad, with or without processes. Ovipositor with dorsal sculpturing of first valvulae strigate ( Fig. 16AView Fig) or (rarely) imbricate-areolate ( Fig. 17QView Fig); second valvulae usually broad distally with dorsal margin serrate distally ( Fig. 16RView Fig), rarely narrow with two widely spaced dorsal teeth ( Fig. 16CView Fig).

Remarks

As mentioned by Evans (1953), Platyjassini  are superficially similar to members of the endemic New World iassine tribe Gyponini  in having the crown usually well delimited and flattened, with the ocelli on the crown and well separated from the anterior margin and eyes. The two tribes also have a similar structure of the male and female genitalia, forewing venation and leg chaetotaxy. Platyjassini  differ from Gyponini  in having the anteclypeus broadened apically, the forewing appendix much wider than the inner apical cell, and the hindwing with veins R4+5 and M1+2 partially to completely confluent.

Checklist of Platyjassini Evans, 1953 

Betsileonas Kirkaldy, 1903  Betsileonas marmorata ( Blanchard, 1840)  . Southern Madagascar.

Pachyjassus  gen. nov.

Pachyjassus alatus  sp. nov. Mahajanga.

Pachyjassus basifurcatus  sp. nov. Toliara.

Pachyjassus ranomafanensis  sp. nov. Antananarivo.

Pallijassus  gen. nov.

Pallijassus reticulatus ( Evans, 1959)  comb. nov. Mahajanga and Toliara.

Pallijassus stenospatulatus ( Evans, 1959)  comb. nov. Antananarivo, Mahajanga and Toliara.

Petalojassus gen. nov. Petalojassus ochrescens  sp. nov. Fianarantsoa.

Phaiojassus  gen. nov.

Phaiojassus acutus  sp. nov. Fianarantsoa.

Phaiojassus bispinosus  sp. nov. Antananarivo and Fianarantsoa.

Phaiojassus constrictus  sp. nov. Antsiranana.

Phaiojassus grandis  sp. nov. Antsiranana.

Phaiojassus spatulatus  sp. nov. Antsiranana.

Phaiojassus undulatus  sp. nov. Antsiranana.

Phaiojassus unispinosus  sp. nov. Antananarivo, Fianarantsoa and Toliara.

Pictojassus  gen. nov.

Pictojassus kirindiensis  sp. nov. Toliara.

Pictojassus productus  sp. nov. Toliara.

Pictojassus tulearensis  sp. nov. Toliara.

Platyjassella  gen. nov.

Platyjassella ancora  sp. nov. Antsiranana and Toamasina.

Platyjassella andohahelensis  sp. nov. Toliara.

Platyjassella attenuata  sp. nov. Toliara.

Platyjassella cormorana  sp. nov. Mahajanga.

Platyjassella emarginata  sp. nov. Antananarivo.

Platyjassella immaculata  sp. nov. Toliara.

Platyjassula  gen. nov.

Platyjassula cyclura  sp. nov. Mahajanga.

Platyjassula heterofurca  sp. nov. Mahajanga and Toliara.

Platyjassula isofurca  sp. nov. Toliara.

Platyjassula mahajangensis  sp. nov. Antsiranana and Mahajanga.

Platyjassus Evans, 1953 

Platyjassus acutus  sp. nov. Fianarantsoa.

Platyjassus asymmetricus  sp. nov. Fianarantsoa.

Platyjassus fisheri  sp. nov. Antsiranana.

Platyjassus griswoldi  sp. nov. Antananarivo and Mahajanga.

Platyjassus harinhalai  sp. nov. Toliara.

Platyjassus irwini  sp. nov. Antananarivo.

Platyjassus pedistylus  sp. nov. Fianarantsoa.

Platyjassus pennyi  sp. nov. Fianarantsoa.

Platyjassus pictipennis  sp. nov. Antsiranana and Mahajanga.

Platyjassus symmetricus  sp. nov. Mahajanga.

Platyjassus vestigius  sp. nov. Fianarantsoa.

Platyjassus viridis Evans, 1953  . Antananarivo, Antsiranana, Mahajanga and Fianarantsoa.

Plerujassus  gen. nov.

Plerujassus appendiculatus ( Evans, 1959)  comb. nov. Mahajanga and Toliara. Plerujassus brunnescens  sp. nov. Mahajanga.

Plexijassus gen. nov. Plexijassus caliginosus  sp. nov. Antsiranana and Fianarantsoa.

Pseudocurtara  gen. nov.

Pseudocurtara minima  sp. nov. Antananarivo and Antsiranana.

Pseudocurtara nigripicta  sp. nov. Toamasina.

Pseudocurtara quadrata  sp. nov. Antananarivo, Antsiranana and Fianarantsoa.

Pseudocyrta gen. nov. Pseudocyrta hyalina  sp. nov. Antsiranana.

Pseudomarganana  gen. nov.

Pseudomarganana olivacea  sp. nov. Antananarivo and Fianarantsoa.

Pseudomarganana rosea  sp. nov. Fianarantsoa.

Pulchrijassus  gen. nov.

Pulchrijassus anjozorobensis  sp. nov. Antananarivo.

Pulchrijassus eunsunae  sp. nov. Antsiranana.

Pulchrijassus pallescens  sp. nov. Fianarantsoa.

Pulchrijassus roseus  sp. nov. Fianarantsoa.

Pulchrijassus rubrilineatus  sp. nov. Fianarantsoa.

Pulchrijassus sindhuae  sp. nov. Antananarivo and Fianarantsoa.

Pulchrijassus talatakelyensis  sp. nov. Fianarantsoa.

Pulchrijassus toamasinensis  sp. nov. Toamasina.

Punctijassus  gen. nov.

Punctijassus circularis  sp. nov. Toliara.

Punctijassus compressus  sp. nov. Toliara.

Punctijassus ivohibensis  sp. nov. Toliara.

Key to genera of Platyjassini  (males)

1. Dorsal coloration nearly uniformly yellow or light brown (or green in life), without distinct pattern consisting of numerous colored spots or larger maculae ( Fig 1AView Fig), at most with small black spot or dark infuscation near apex of forewing clavus or corium, or fuscous crown margin.........2

– Dorsal coloration not uniformly yellow or light brown, either mostly dark brown, red or black( Fig.1FView Fig), or with pattern consisting of numerous conspicuous spots or larger maculae ( Figs 1NView Fig, 3D, JView Fig).........8

2. Crown in dorsal view without acute anterolateral extension distinctly overlapping eye ( Figs 21AView Fig, 23BView Fig)....................................................................................................................................................3

– Crown in dorsal view with acute anterolateral extension distinctly overlapping eye ( Figs 22AView Fig, 23View Fig A–B)...............................................................................................................................................4

3. Frontoclypeus punctate, without transverse striations ( Fig. 23DView Fig) ............ Pallijassus  gen. nov.

– Frontoclypeus transversely rugose ( Fig. 23EView Fig) ............................................ Plerujassus  gen. nov.

4. Length of male 6.7 mm or less; aedeagus symmetrical or nearly so, or, if distinctly asymmetrical, with only distal processes present ( Figs 7DView Fig, 15EView Fig).................................................5

– Length of male> 6.7 mm; aedeagus either symmetrical with paired basal processes or distinctly asymmetrical, with single process arising from atrium and well separated from shaft ( Fig. 10FView Fig, except Platyjassus asymmetricus  sp. nov. with asymmetrical process near shaft apex, Fig. 9CView Fig)......6

5. Hind coxa and apex of femur without black spot; male pygofer lobe often with sclerotized dorsal appendage or with apex emarginate ( Fig. 7E, OView Fig); style apophysis with numerous conspicuous denticuli ( Fig. 7B, FView Fig) ................................................................. Platyjassella  gen. nov.

– Hind coxa and apex of femur each with distinct black spot ( Figs 3View Fig R–S, 23F); male pygofer lobe rounded distally, without processes ( Fig. 15AView Fig); style apophysis without distinct denticuli ( Fig. 15CView Fig) .................................................................................................. Punctijassus  gen. nov.

6. Male style with two prominent acute projections apically (not foot-like, Fig. 8BView Fig); pygofer sometimes with ventral process ( Fig. 8HView Fig) ...................................................... Platyjassula  gen. nov.

– Male style apex foot-like with short heel and more elongated toe ( Fig. 10DView Fig), or with single acute point ( Fig. 10KView Fig); pygofer without ventral process...............................................................7

7. Anterolateral extension of crown overlapping <½ of anterolateral margin of eye ( Figs 1AView Fig, 23AView Fig); hind coxa and apex of femur each with distinct black spot ( Fig. 23FView Fig); aedeagus with pair of long basal processes ( Fig. 4A, EView Fig) .......................................................... Pachyjassus  gen. nov.

– Anterolateral extension of crown overlapping> ½ of anterolateral margin of eye ( Fig. 23BView Fig); hind coxa and apex of femur without black spots; aedeagus with basal process absent, or present but unpaired and asymmetrical ................................................... Platyjassus Evans, 1953 

8. Vertex in dorsal view with acute lateral extension overlapping anterolateral margin of eye ( Figs 3C, JView Fig, 23BView Fig)..........................................................................................................................................9

– Vertex in dorsal view without acute lateral extension overlapping anterolateral margin of eye ( Figs 3D, IView Fig, 23FView Fig).........................................................................................................................................13

9. Body length including forewings 15 mm or more, head distinctly wider than pronotum .............. ................................................................................................................. Betsileonas Kirkaldy, 1903 

– Body length including forewings <13 mm, head narrower than pronotum................................10

10. Dorsal color pattern consisting of symmetrical red spots or pale green transcommissural marking ( Fig. 1View Fig M–O); hindwing veins RP and MA confluent for short distance, then separate distally......11

– Dorsal markings not as above, usually consisting of distinct longitudinal stripes ( Fig. 3CView Fig, J–Q); hindwing veins RP and MA completely confluent distally...........................................................12

11. Dorsum with numerous conspicuous symmetrical red spots ........................ Pictojassus  gen. nov.

– Dorsum with pale green transcommissural marking .................................... Petalojassus  gen. nov.

12. Forewing vein R without supernumerary branches extended to costal margin, with extra crossveins usually present between veins R, M and CuA; dorsum usually with bold symmetrical pattern of dark and pale markings ( Fig. 3View Fig J–Q) ...................................................... Pulchrijassus  gen. nov.

– Forewing vein R with one or more long supernumerary branches extended to costal margin, without extra crossveins between veins R, M. and CuA; dorsum nearly uniform dark brown or black ( Fig. 3CView Fig) .................................................................................................... Plexijassus  gen. nov.

13. Forewing with numerous supernumerary crossveins ( Fig. 3FView Fig) .............. Pseudocurtara  gen. nov.

– Forewing with, at most, 1–2 supernumerary crossveins ( Fig. 3View Fig G–I)...........................................14

14. Forewing mostly hyaline, appendix crenulate ( Fig. 3GView Fig); hind femur with supernumerary macrosetae ........................................................................................................................... Pseudocyrta  gen. nov.

– Forewing membrane with extensive opaque sclerotization, appendix flat, not crenulate ( Fig. 3View Fig H–I); hind femur macrosetae 2+2 +1........................................................................................15

15. Crown with pair of round black spots posterad of ocelli, pronotum with anterior group of irregular black maculae ( Fig. 3View Fig H–I); aedeagus symmetrical, with pair of lateral spines closely paralleling shaft .................................................................................... Pseudomarganana  gen. nov.

– Crown without pair of round black spots, pronotum unicolorous, without group of anterior maculae ( Fig. 1FView Fig); aedeagus usually asymmetrical, with spines variously arranged ..... Phaiojassus  gen. nov.

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Hemiptera

Family

Cicadellidae

Loc

Platyjassini Evans, 1953

Dietrich, Christopher H., Magalhães, Raysa Brito de & Takiya, Daniela M. 2020
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Pachyjassus

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Pachyjassus alatus

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Pachyjassus basifurcatus

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Pachyjassus ranomafanensis

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Pallijassus

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Pallijassus reticulatus ( Evans, 1959 )

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Pallijassus stenospatulatus ( Evans, 1959 )

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Petalojassus ochrescens

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Phaiojassus

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Phaiojassus acutus

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Phaiojassus bispinosus

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Phaiojassus constrictus

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Phaiojassus grandis

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Phaiojassus spatulatus

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Phaiojassus undulatus

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Phaiojassus unispinosus

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Pictojassus

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Pictojassus kirindiensis

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Pictojassus productus

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Pictojassus tulearensis

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Platyjassella

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Platyjassella ancora

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Platyjassella andohahelensis

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Platyjassella attenuata

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Platyjassella cormorana

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Platyjassella emarginata

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Platyjassella immaculata

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Platyjassula

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Platyjassula cyclura

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Platyjassula heterofurca

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Platyjassula isofurca

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Platyjassula mahajangensis

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Platyjassus acutus

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Platyjassus asymmetricus

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Platyjassus fisheri

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Platyjassus griswoldi

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Platyjassus harinhalai

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Platyjassus irwini

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Platyjassus pedistylus

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Platyjassus pennyi

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Platyjassus pictipennis

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Platyjassus symmetricus

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Platyjassus vestigius

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Plerujassus

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Plerujassus appendiculatus ( Evans, 1959 )

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Plerujassus brunnescens

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Plexijassus caliginosus

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Pseudocurtara

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Pseudocurtara minima

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Pseudocurtara nigripicta

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Pseudocurtara quadrata

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Pseudocyrta hyalina

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Pseudomarganana

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Pseudomarganana olivacea

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Pseudomarganana rosea

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Pulchrijassus

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Pulchrijassus anjozorobensis

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Pulchrijassus eunsunae

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Pulchrijassus pallescens

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Pulchrijassus roseus

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Pulchrijassus rubrilineatus

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Pulchrijassus sindhuae

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Pulchrijassus talatakelyensis

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Pulchrijassus toamasinensis

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Punctijassus

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Punctijassus circularis

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Punctijassus compressus

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Punctijassus ivohibensis

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Platyjassini

Evans 1953
1953
Loc

Platyjassus

Evans 1953
1953
Loc

Platyjassini

Evans 1953
1953
Loc

Platyjassus

Evans 1953
1953
Loc

Platyjassus viridis Evans, 1953

Ev. J. W. Evans 1953
1953
Loc

Betsileonas

Kirkaldy 1903
1903