Griveaudus Stroiński & Świerczewski, 2014, gen. nov.
Creators: name: Stroiński, Adam
name: Świerczewski, Dariusz
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Flatidae
Griveaudus

description: Griveaudus gen. nov.
(Figs 1–70)
Type species: Griveaudus issidiformis sp. nov., here designated.
Etymology. The generic name is after Paul Griveaud (1907–1980), a well-known French collector of Madagascan insects. Gender: masculine (Genetivus singularis: Griveaudus, 4th declension).
Diagnosis. The newly described genus Griveaudus differs from other Madagascar Selizini genera by the combination of the following characters: frons with short median, single carina, mesonotum smooth (frons with Yshaped carina, mesonotum with gibbosities— Urana Melichar, 1902), vertex extremely incised medially (vertex slightly incised medially— Peyrierasus Stroiński et Świerczewski, 2013).
Description. Body robust. Head truncate, with compound eyes in dorsal view about as wide as thorax (Figs 2–3, 5).
HEAD. Vertex in form of hourglass, extremely narrow medially; posterior margin elevated, anterior margin obliterated laterally, lateral margins subparallel (Figs 7–8), surface with sensory and secretory structures (Fig. 17). Frons (Figs 11–13) as long as wide, the widest at the level of compound eyes; frons with short and wide protrusion in the upper part of head; disc of frons with short median carina; lateral margins of frons carinate and elevated; disc of frons irregularly rugose, with sensory and secretory organs (Fig. 14). Compound eyes oval, with small callus placed at lower-posterior margin. Ocelli absent (Figs 6–7). Antennal pedicel short, widened apically, with setae and plate organs mainly restricted to a hollow area at the top and partly on upper surface (Figs 18–20). Sensilla placodea of the clover-leaf like type (Figs 21–22). Clypeus narrower than frons, without carinae (Fig. 11). Rostrum with apical segment a little shorter than subapical, apex reaching hind coxae.
THORAX. Pronotum distinctly longer than vertex at midline, with short, median carina placed posteriorly (Figs 3, 7, 10) or in some specimens median carina absent (Fig. 9); disc of pronotum medially depressed, postocular eminences absent. Mesonotum deltoid (Figs 3, 9–10); disc anteriorly with median groove and short obsolete carina; lateral carinae internally arcuate and elevated, reaching posterior margin; lateral parts of mesonotum without gibbosities.
Tegmen (Figs 1, 4, 6, 23–28) coriaceous and convex, with well visible venation and bulla, with apical line only; transverse veinlets forming irregular net on whole tegmen. Costal and posterior margins arcuate, costal and sutural angles bluntly rounded; postclaval sutural margin absent. Costal area narrower than costal cell, with transverse veinlets, terminating at the level of end of clavus. Costal cell with several transverse veinlets. Basal cell long and narrow. Sc+R forked before bulla and distinctly basad of M forking; ScRA elevated, RP obsolete basally, M fork before half of tegmen; M1+2 and M3+4 forks at the same level in apical part of tegmen; CuA bifurcated near the midlength of tegmen. Claval veins Pcu and A1 fused before end of clavus, vein A1 strongly elevated; transverse veinlets between Pcu and CuP. Terminal forks in subapical part of tegmen. Terminals: CuA—2, M1+2—2, M3+4—2, RP—2, ScRA—2. Sensory and secretory structures present on the whole surface of tegmen. Tubercles with concentration on costal area, alongside apical margin, between basal RP and M veins and in basal part of clavus.
Femora shorter than tibiae; hind tibia arcuate and partly flattened laterally with 2 lateral spines placed after midlength, apically with row of well-developed 7 teeth (Fig. 15); basitarsomere as long as cumulative length of 2nd and 3rd tarsomeres with row of apical spines in formula 2 (longer) + 6–7 (shorter), second tarsomere with 2 lateral spines (Fig. 16).
MALE. Anal tube (in lateral view, Figs 29–30, 37) elongate, distinctly tapering apicad; anus placed about midlength. Anal tube (in dorsal view, Fig. 31, 39) elongate, basal part distinctly narrower than median part; apical margin with shallow incision; anus placed about midlength.
Pygofer (in lateral view) distinctly higher than wide, narrowing dorsally (Figs 29–30, 36); dorso-posterior angle almost right; anterior margin sinuate, posterior margin weakly arcuate.
Genital styles (in ventral view, Fig. 32; in lateral view, Fig. 38) longer than wide and bearing distinct, long and sharp capitulum; upper margin near base of capitulum strongly convex; ventro-posterior angle widely rounded.
Phallic complex. Periandrium closed basally, open dorsally with long lateral split (Figs 40–43, 65–68). Ventral part apically tripartite with median sharp process and lateral folds; vertical keel and ventrally pointed tooth present; apical lateral folds with several teeth. Dorsal part trilobate; median part very short with vertical, bifurcate process oriented dorso-basad; lateral lobes as long as ventral part, with two groups of lateral teeth, median and apical processes; median process huge and multiforked apically, oriented basad; apical process long and narrow, well sclerotised basally with short tooth and bifurcate apically, with or without median short process. Aedeagus divided into dorsal and ventral parts (Figs 69–70), lateral split extending midlenght. Dorsal part about as long as ventral part, medially with lateral lobe, apically distinctly bilobate.
FEMALE. Pregenital sternite massive, lateral lobes weakly separated (Figs 44–47, 56); anterior margin weakly concave, medially with sclerotized lobe; posterior margin medially with two bluntly triangular lobes separated by shallow concavity, sometimes shifted. Abdominal sternites with scattered sensory pits (Figs 48–49).
Anal tube (in lateral view, Figs 50–51) flattened, elongate and narrow, reaching end of gonoplac; anus placed about midlength; ventral surface with long setae. Anal tube (in dorsal view, Fig. 57) oval or ovoid; anus placed about midlength.
Gonoplac unilobate, laterally flattened, elongate (Figs 58–59); posterior margin rounded with single row of 5- 6 well-developed teeth (Figs 52–53, 60); narrow, membranous part placed alongside ventral margin, extending half of gonoplac.
Gonapophysis VIII sabre-shaped and laterally flattened, tapering apicad (Figs 61–62); apical part of ventral margin folded externally, apical part of dorsal margin with 4 teeth. Endogonocoxal process shorter than gonapophysis VIII, sabre-shaped with spiniferous microsculpture (Figs 54–55).
Gonaphophyses IX and gonospiculum bridge as in Figs 63–64.
Bursa copulatrix of single, elongately oval, huge pouch and narrow basis (Fig. 33); cells well visible, without ornamentation (Fig. 34). Spermatheca well developed; ductus receptaculi ribbed and widened apically, diverticulum ductus smooth and narrow with bulba (Fig. 35).
Distribution. Madagascar.
description: Published as part of Stroiński, Adam & Świerczewski, Dariusz, 2014, Griveaudus gen. nov. (Hemiptera: Fulgoromorpha: Flatidae) from Tsaratanana Massif supports the biodiversity of montane flatids in Madagascar, pp. 61-75 in Zootaxa 3861 (1) on pages 62-68, DOI: 10.11646/zootaxa.3861.1.3, http://zenodo.org/record/287094