Kesaflata Stroiński & Malenovský & Świerczewski 2016, gen. nov.
Creators: name: Stroiński, Adam
name: Malenovský, Igor
name: Świerczewski, Dariusz
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Flatidae
Kesaflata

description: Kesaflata gen. nov.
(Figs 53–74)
Type species. Kesaflata lubosi sp. nov., here designated.
Diagnosis. Frons not produced anteriad, with median carina, and short sinuate intermediate carinae. Vertex, pronotum and mesonotum with a median groove. Tegmina short (“sub- brachypterous”), coriaceous, with apex narrowly rounded; clavus with A 1 basally strongly elevated. Female anal tube, in lateral view, with convex lateral lobes, reaching posterior margin of gonoplac; in dorsal view, widest medially, anus placed in posterior half. Gonoplac unilobate, sub-rectangular, posterior margin with two rows of teeth, ventral margin with large membranous lobe. Bursa copulatrix with single pouch.
Description. Head with compound eyes, in dorsal view, narrower than thorax (Figs 54, 57, 60–62). Vertex transverse, shorter than pronotum; anteriorly produced anterior margin obsolete; lateral margins elevated, carinate, parallel; posterior margin weakly concave; disc without carina, but with median groove (Figs 54, 57, 60–62). Frons without protrusion in dorsal view, with median and short intermediate carinae; median and intermediate carinae connected at base, point of connection elevated (Figs 56, 65); in lateral view, lateral carinae of frons joining lateral carinae of vertex in right angle (Fig. 64); frontoclypeal suture arcuate (Figs 56, 65). Clypeus without carinae (Figs 56, 65). Rostrum with apical segment shorter than subapical, reaching hind coxae. Compound eyes rounded, with small callus at posterior and ventral margins; lateral ocelli absent (Figs 53, 55, 58, 64). Antenna located ventral in respect to eye; scapus distinctly shorter than diameter of eye, cylindrical, scarcely covered with short setae; pedicel shorter than diameter of eye, slightly longer than scapus, barrel-shaped, apical part concave, functional area at the top and on dorsal surface with trichoid sensilla type 1 on apical and dorsal surface, antennal plate organs present on apical concavity and delimiting laterally dorsal functional surface (Figs 58, 64, 65).
Thorax. Pronotum with anterior margin medially produced till half of eye length; disc with median groove; postocular eminences bluntly rounded; posterior margin concave (Figs 54, 57, 59–63). Mesonotum triangular, with groove in median portion; lateral carinae as ridges, obsolete, connected at base in form of horseshoe; area between median groove and ridges depressed; scutellum bluntly rounded apically (Figs 54, 57, 59–63).
Tegmen coriaceous, irregularly convex with distinct venation; costal margin strongly arcuate medially, relatively straight in basal half and posterior portion, costal angle widely, bluntly rounded, sutural angle obtuse, postclaval sutural margin absent (Figs 53, 54, 66–69). Costal area narrower than postcostal cell, with transverse veinlets (Figs 58, 68), terminating posterior to the level of apex of clavus; postcostal cell with several transverse veinlets. Basal cell long and narrow; ScRA+RP leaving basal cell with common stem, ScRA elevated, RP at the level of bulla obsolete; ScRA ending with two terminals; RP forking posterior to clavus apex, ending with four terminals at posterior margin; MP forking posterior to CuA fork, ending with four terminals; CuA with fork anterior to apex of bulla. Clavus with A 1 basally strongly elevated, disc between Pcu and A 1 and posterior to it depressed (Figs 58–60, 66–69); Pcu and A 1 fused anterior to apex of clavus; several transverse veinlets between A 1 and A 2. Tubercles scattered on the whole tegmen with concentration in the following parts: basal part of clavus – between A 1 and A 2 and between Pcu and A 1, basal part of costal membrane, and on bulla between ScRA and RP. Sensory sensilla on tegmen absent. Hindwing well developed.
Femora shorter than tibiae; hind tibiae almost straight, triangular in cross section, with two lateral spines placed in apical half, apically with row of seven well-developed spines (5 short + 2 long); basitarsomere slightly longer than cumulative length of tarsomeres 2 and 3, with row of eight apical spines and setae; second tarsomere with two lateral spines and median pad with thick setae.
Male unknown.
Female terminalia and genitalia. Pregenital sternite with X-shaped strong sclerotization in median portion, without fold. Anal tube, in lateral view (Fig. 70) slightly curved ventrad, tapering apicad, with nearly pointed apex and large convex lateral lobes; anal tube covering gonoplac and reaching its posterior margin; anus placed posterior to midlength; in dorsal view (Fig. 71) elongately oval, posterior margin with shallow incision medially. Gonoplac unilobate, sub-rectangular (Fig. 72); posterior margin with two rows of teeth; dorsal part of posterior margin to the level of teeth limit well sclerotized, ventral part with wide membranous, wrinkled lobe. Gonapophysis VIII (Fig. 73) sabre-shape, laterally flattened; dorsal margin sinuate, with subapical, sharp teeth; ventral margin arcuate, slightly up-folded with keels, ending with teeth; endogonocoxal process about as long as gonapophysis, distinctly tapering apicad, membranous with distinct spiniferous microsculpture. Gonospiculum as in Dixamflata. Bursa copulatrix with single pouch, with cells, but without sclerites. Spermatheca (Fig. 74) well developed; ductus receptaculi about the same length as diverticulum ductus.
Remarks. Within the Socotran fauna of Flatidae, Kesaflata is similar to Dixamflata gen. nov. in the following characters: frons with median keel, tegmen short, coriaceous, clavus with A 1 basally strongly elevated, gonoplac unilobate, sub-rectangular, posterior margin with two rows of teeth. Kesaflata differs from Dixamflata in the following characters: vertex, pronotum and mesonotum with median groove (with median keel in Dixamflata), frons not produced anteriad (with a large, rounded crown in Dixamflata), apical part of tegmen not produced (with a finger-like apex in Dixamflata), tegmen lacking sensory sensilla on most of its surface (with numerous sensilla arranged in several groups over the tegmen surface in Dixamflata), female anal tube with large convex lateral lobes and anus placed posterior to midlength (ventrolaterally concave, lacking lateral lobes and with anus placed in basal half in Dixamflata), ventral part of gonoplac with membranous lobe (lacking such a lobe in Dixamflata). See also the Discussion for a comparison with other similar taxa in a wider region.
Etymology. The generic name is derived from “ Qeysoh ” (sometimes also spelled as “ Kesa ”), a local name of the settlement in Socotra near where the type species was collected, and “ Flata ” which is used here for a representative of the Flatidae family. Gender feminine.
Distribution. Yemen: Socotra island.
description: Published as part of Stroiński, Adam, Malenovský, Igor & Świerczewski, Dariusz, 2016, Two new genera offlatid planthoppers from Socotra island (Hemiptera: Fulgoromorpha: Flatidae), pp. 461-489 in Acta Entomologica Musei Nationalis Pragae 56 (2) on pages 475-478, DOI: 10.5281/zenodo.4503913