Pictojassus, Dietrich & Magalhães & Takiya, 2020

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 : 26-28

Pictojassus gen. nov.

urn:lsid:zoobank.org:act:89A1C1BB-71EA-4203-BBA6-EEA900E5DE31

Figs 1 M–O, 6, 16P–X

Type species

Pictojassus kirindiensis sp. nov.

Etymology

The name, a masculine noun, is formed by combining ʻ picto -ʼ, meaning ʻpaintedʼ, with ʻ- jassus ʼ, a common suffix for genera of Iassinae , and referring to the presence of orange or red markings on the dorsum.

Diagnosis

This genus may be distinguished by the following combination of features: body medium-sized; dorsum pale, with numerous symmetrical red markings; vertex strongly overlapping anterolateral margin of eye, crown transversely rugose; distal half of forewing with supernumerary crossveins; hindwing veins R4+5 and M1+2 confluent preapically but separate near apex; hind femur macrosetal formula 2+2+ 1; style slender, without denticuli; aedeagus with one or more distal processes.

Description

HABITUS. Small to medium-sized platyjassines (5.4–6.5 mm). Color stramineous, with extensive symmetrical orange or red dorsal markings on head, pronotum and forewing.

HEAD. Crown declivous, convex, with numerous irregular transverse rugae, anterior margin produced, spatulate, forming hood over dorsal part of face, lateral extension overlapping more than half of eye margin; ocelli anteromesad of eyes. Frontoclypeus moderately convex without median depression; antennal ledge transverse, strongly overlapping frontoclypeus; lateral frontal suture present above antennal ledge but not extended to crown margin; gena slightly emarginate below eye, partly exposing

proepisternum; lorum small, flat; anteclypeus slightly convex, lateral margins evenly divergent distally; rostrum slender, not surpassing front trochanters.

THORAX. Pronotum declivous, in profile continuing contour of crown, much wider than head, lateral margins strongly divergent posterad. Forewing distal half with supernumerary crossveins; appendix extended to wing apex, slightly broader than inner apical cell, inner apical cell relatively short. Hindwing veins R4+5 and M1+2 confluent preapically but separate near apex. Front femur row IC with ~10–14 setae, somewhat irregularly arranged; AV with 5 stout setae in basal half, dorsal surface of tibia rounded, PD with 4 widely spaced macrosetae. Hind femur macrosetal formula 2+2 +1, tibial row AD with one or more smaller setae between successive macrosetae; tarsomere I plantar row single and weakly developed.

ABDOMEN. Male pygofer base band-like, dorsally with median projection; lobe separated from base by membranous vertical cleft, with numerous macrosetae in distal half, apex broadly rounded, processes and spines absent. Subgenital plate without macrosetae, lateral margin with row of small, stout setae and few inconspicuous long, fine setae. Style apophysis slender, smooth, without denticuli, apex abruptly bent dorsad, with rounded tip, recurved dorsomesad in ventral view. Connective with stem longer than arms, anterior margin angulately produced. Aedeagus with atrium V-shaped in posterior view, with weakly sclerotized plate connecting arms of V; shaft with one or more preapical processes. Female sternite VII variable interspecifically. First valvulae broad through most of length, dorsal sculpture strigate. Second valvulae abruptly broadened near midlength, dorsal margin in distal half minutely and irregularly serrate.

Remarks

This genus differs from others in the tribe in having numerous symmetrical red or orange markings on the head, pronotum, and forewings.

Key to species of Pictojassus gen. nov.

1. Forewing clavus without crossveins ( Fig. 1M ); female abdominal sternite VII with posterior margin bilobed ( Fig. 16P ) ..................................................... Pictojassus kirindiensis gen. et sp. nov.

– Forewing clavus with one or more crossveins; female abdominal sternite VII with posterior margin produced or truncate............................................................................................................2

2. Body length <6 mm, forewing clavus with several crossveins ( Fig. 1O ); female abdominal sternite VII with posterior margin truncate ( Fig. 16V ) ......... Pictojassus tulearensis gen. et sp. nov.

– Body length> 6 mm, forewing clavus with single crossvein connecting Pcu to claval suture distally ( Fig. 1N ); female abdominal sternite VII with posterior margin roundly produced ( Fig. 16S ) ... ............................................................................................ Pictojassus productus gen. et sp. nov.

Figures

Fig. 1. Platyjassini, dorsal and lateral habitus of males. A. Pachyjassus alatus sp. nov. B. Pachyjassus basifurcatus sp. nov. C. Pachyjassus ranomafanensis sp. nov. D. Pallijassus stenospatulatus (Evans, 1959). E. Petalojassus ochrescens sp. nov. F. Phaiojassus acutus sp. nov. G. Phaiojassus bispinosus sp. nov. H. Phaiojassus constrictus sp. nov. I. Phaiojassus grandis sp. nov. J. Phaiojassus spatulatus sp. nov.K. Phaiojassus undulatus sp. nov. L. Phaiojassus unispinosus sp. nov. M. Pictojassus kirindiensis sp. nov. N. Pictojassus productus sp. nov. O. Pictojassus tulearensis sp. nov. P. Platyjassella ancora sp. nov. Q. Platyjassella andohahelensis sp. nov. R. Platyjassella attenuata sp. nov. S. Platyjassella cormorana sp. nov. T. Platyjassella emarginata sp. nov. U. Platyjassella immaculata sp. nov. Scale bars = 1 mm.

Fig. 16. Female terminalia. – A–C. Pachyjassus basifurcatus sp. nov. A. Sternite VII. B. First valvula with detail of apex. C. Second valvulae with detail of apex. – D–F. Pachyjassus ranomafanensis sp. nov. D. Sternite VII. E. First valvula with detail of apex. F. Second valvulae with detail of apex. – G–I. Pallijassus sp. G. Sternite VII. H. First valvula with detail of apex. I. Second valvulae with detail of apex. – J–L. Petalojassus ochrescens sp. nov. J. Sternite VII. K. First valvula with detail of apex. L. Second valvulae with detail of apex. – M–O. Phaiojassus acutus sp. nov. M. Sternite VII. N. First valvula with detail of apex. O. Second valvulae with detail of apex. – P–R. Pictojassus kirindiensis sp. nov. P. Sternite VII. Q. First valvula with detail of apex. R. Second valvulae with detail of apex. – S–U. Pictojassus productus sp. nov. S. Sternite VII. T. First valvula with detail of apex. U. Second valvulae with detail of apex. – V–X. Pictojassus tulearensis sp. nov. V. Sternite VII. W. First valvula with detail of apex. X. Second valvulae with detail of apex. – Y–AA. Platyjassella andohahelensis sp. nov. Y. Sternite VII. Z. First valvula with detail of apex. AA. Second valvulae with detail of apex. Photos not to scale.