Kelyflata, Świerczewski & Stroiński, 2019

Świerczewski, Dariusz & Stroiński, Adam, 2019, Kelyflata gen. nov. adds to Selizini flatids in Madagascar (Hemiptera: Fulgoromorpha: Flatidae), Zootaxa 4712 (3), pp. 434-444 : 435-439

Kelyflata gen. nov.

( Figs 1–29 )

Type species. Kelyflata capensis sp. nov., here designated.

Etymology. The generic name is an arbitrary amalgamation of the words “kely”—small in Malagasy language and “ Flata ”, which is used here for the representative of the Flatidae family, and is descriptive for the small size of the specimen of the type species. Gender feminine.

Diagnosis. The new genus differs from the genus Lembakaria Świerczewski et Stroiński, 2019 by the follow- ing characters: frons with median carina (frons without median carina in Lembakaria), dorsal part of periandrium trilobate (dorsal part of periandrium bilobate in Lembakaria).

The new genus differs from the genus Urana Melichar, 1902 by the following characters: frons with median carina not diverged (frons with Y-shaped median carina in Urana ), mesonotum without gibbosities (mesonotum with four gibbosities in Urana ), costal margin sinuate before apex, postclaval sutural margin straight (costal margin not sinuate before apex, postclaval sutural margin convex in Urana ), clavus with slightly elevated base of A 1 vein (clavus with strongly elevated base of A 1 vein in Urana ). Description. HEAD. Head with compound eyes, in dorsal view, narrower than thorax. Vertex transverse, in the shape of hourglass, with very narrow median portion, medially slightly overlapped by pronotum; lateral margins carinate and subparallel, anterior margin carinate, arcuate ( Fig. 1 ). Frons convex, widest at its lower third in frontal view; lateral margins carinate, arcuate and elevated, without incisions; upper margin almost straight; disc of frons with single carina, laterally with ridges; frontoclypeal suture strongly arcuate ( Figs. 2, 3 ).

Clypeus smooth, weakly convex, without carinae ( Fig. 2 ). Rostrum with apical segment shorter than subapical one, apex reaching between hind coxae ( Fig. 6 ). Compound eyes oval, with narrow callus at posterior margin. Lateral ocelli present ( Figs 4, 5 ). Antenna inserted very close to medio-ventral margin of eye; scapus small, ring-like, without setae; pedicel shorter than diameter of eye but distinctly longer than scapus, bulbous, functional area at the top and on dorsal surface with trichoid sensilla type 1, antennal plate organs present on apical concavity and basally delimiting lateral margins of dorsal functional surface ( Figs 7–10 ).

THORAX. Pronotum, in dorsal view, shorter than mesonotum at midline; anterior margin arcuate, reaching the midlength of compound eyes, posterior margin slightly concave; pronotum disc wrinkled, without carinae, with lateral impressions and central pit; postocular eminences conical ( Figs 1, 4 ). Mesonotum with scutellum widely deltoid, wider than long at midline; disc of mesonotum medially depressed with groove; lateral carinae as ridges, reaching posterior margin; scutellum with acute, elevated apex.

Tegmina longer than wide, subrectangular, with distinct venation and numerous transverse veinlets, without nodal line and with single apical line; costal margin sinuate, costal and sutural angle rounded, apical margin round- ed, postclaval sutural margin straight ( Figs 13–16 ). Costal area short, with dense transverse veinlets, ending before the level of fusion of claval veins. Costal cell about the same width as costal area, tapering apicad. Basal cell longer than wide. Tegmen with longitudinal veins ScRA and RP arising as short common stem from basal cell before bulla. Vein ScRA with fork distinctly after RP fork, ending on costal margin; vein RP with fork before MP fork, ending on costal margin; vein MP with fork distinctly basad to CuA fork, ending on apical and postclaval margins; CuA single or bifurcate after the postclaval suture. Apical cells subrectangular. Veins of apical half of tegmen wrinkled. Clavus in basal half elevated, posterior part concave; A 1 weakly elevated; Pcu and A 1 joined slightly anterior to clavus apex. Sensory and wax gland-plates concentrated on bulla, basal and apical part of clavus, costal area, with a few scattered on the whole tegmen ( Figs 13, 15–16 ).

Pro- and mesofemur slightly shorter than tibiae, subrectangular in cross section. Pro- and mesotibia with shallow groove on external side; apical tarsomere of both legs longer than cumulative length of second and basal tarsomeres. Metatibia longer than metafemur, triangular in cross section with two lateral spines and apical row of spines—first lateral spine placed subapically, second lateral spine placed a bit after midlength, apical spines in formula 2 longer (external) + 5 shorter (internal); basitarsomere of metatarsus a bit longer than cumulative length of second and apical tarsomeres, with apical spines lined as semicircle—2 external spines a bit longer than 6 shorter internal spines; second tarsomere with lateral spines and median pad with setae. Metatibiotarsal formula: 2-2+5/8/2 ( Figs 11–12 ).

MALE TERMINALIA. Anal tube, in lateral view, elongate, with breaking point before anus, tapering apicad; anus placed a bit after midlength ( Figs 17 , 23 ); in dorsal view, with rounded apex ( Figs 18 , 24 ). Pygofer, in lateral view, subrectangular with dorsal margin shorter than ventral margin, anterior margin concave. Genital style bearing short, hook-like capitulum with apex oriented anteriad ( Figs 17 , 23 ).

PHALLIC COMPLEX. Periandrium without any additional processes, about as long as aedeagus, in lateral view; lateral split reaching almost basal part of periandrium ( Figs 19 , 25 ).

Dorsal part of periandrium, in dorsal view, shorter than ventral part, trilobate, median lobe longer then lateral lobes, with spiniferous microsculpture. Ventral part of periandrium unilobate ( Figs 21 , 27 ). Aedeagus, in lateral view, long and narrow, apically with small, acute process oriented apicad and 1–2 processes oriented basad ( Figs 20 , 26 ); in ventral view, with deep median split, reaching almost basal part ( Figs 22 , 28 ).

Female terminalia. Female unknown.

Distribution. Madagascar: Toliara and Fianarantsoa provinces ( Fig. 29 ).

Figures

FIGURE 29. Ecoregions of Madagascar after Vieilledent et al. (2018). Kelyflata gen. nov., distribution map.

FIGURES 1–6. Kelyflata capensis sp. nov., SEM photographs. (1) Anterior part of body, dorso-lateral view; (2) same, frontal view; (3) same, fronto-lateral view; (4) same, latero-dorsal view; (5) same; fronto-ventral view; (6) rostrum.

FIGURES 7–12. Kelyflata capensis sp. nov., SEM photographs. (7–10) Antenna; (11) apical part of metatibia and metatarsus; (12) metatarsus, ventral view.

FIGURES 13–16. Kelyflata capensis sp. nov., SEM photographs. (13) Left tegmen, general view; (14) same; vein sensory structures; (15) same, basal half; (16) same, apical half.

FIGURES 17–22. Kelyflata capensis sp. nov., male, drawings. (17) Pygofer and anal tube, lateral view; (18) anal tube, dorsal view; (19) periandrium, lateral view; (20) aedeagus, lateral view; (21) periandrium, dorsal view; (22) aedeagus, ventral view. Scale bar-0.5 mm.

FIGURES 23–28. Kelyflata ilakakae sp. nov., male, drawings. (23) Pygofer and anal tube, lateral view; (24) anal tube, dorsal view; (25) periandrium, lateral view; (26) aedeagus, lateral view; (27) periandrium, dorsal view; (28) aedeagus, ventral view. Scale bar-0.5 mm.