Revision of the Eurybrachidae (XVII). The new Australian genus Kamabrachys gen. nov. with ten new species (Hemiptera: Fulgoromorpha) Author Constant, Jérôme Royal Belgian Institute of Natural Sciences, O. D. Phylogeny and Taxonomy, Entomology, Vautier street 29, B- 1000 Brussels, Belgium jerome.constant@naturalsciences.be text European Journal of Taxonomy 2023 2023-10-02 895 1 1 133 https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/2289/9889 journal article 270778 10.5852/ejt.2023.895.2289 92bb6a65-882c-43fa-8324-1905a7d92a7e 2118-9773 8402224 75CAAC73-8100-4D16-B970-4A533DBC7000 Kamabrachys waineri gen. et sp. nov. urn:lsid:zoobank.org:act: 97F03643-01E6-4E8C-B86A-7C4006E6C071 Figs 5B , 73–80 Diagnosis The species can be recognized by the following combination of characters: (1) posterior margin of the lateroventral lobes of the pygofer ( lvl ) oblique and sinuate in lateral view ( Fig. 75A ) and tapering towards the posterior in ventral view ( Fig. 75C ), inner margin of lobes concave in ventral view ( Fig. 75C ), ventral margin tapering in inner angle in caudal view ( Fig. 75E ); (2) posterior margin of laterodorsal process of gonostylus ( ldg ) deeply emarginate, leaving a widely open angle between laterodorsal process and ventral process of gonostylus ( vp ) in lateral view ( Fig. 75A ); (3) crest of furcate process of periandrium ( cfp ) only along distal portion and not merging basally ( Fig. 77D ), in lateral view, tapering in distal portion ( Fig. 77E ); (4) laterodorsal process of periandrium ( ldp ) high in basal portion then abruptly tapering with dorsal margin strongly sinuate in lateral view, ended in a narrow, slightly curved, acute point directed posterodorsad in lateral view, not reaching half-length of lateroventral process ( lvp ) ( Fig. 77D–E ); (5) lateroventral process of periandrium ( lvp ) dorsoventrally flattened, falcate on most length, with apical point directed dorsolaterad ( Fig. 77D–F ); (6) apicodorsal process of aedeagus ( adp ) quite strongly sinuate, rather wide and tapering towards apex distally, and shorter than apicoventral process ( avp ) ( Fig. 77A–C ); (7) posterior wing with whitish marking more or less visible (depending on individuals) along sutural margin ( Fig. 73A ). Etymology The species name is a patronym referring to the Australian entomologist John Wainer (Agribio Victoria , Melbourne) in acknowledgement of his help with the identification of the host plants of Australian Eurybrachidae and Fulgoridae Latreille, 1807 . Type material Holotype AUSTRALIA • ♂ ; Queensland , Chillagoe ; 23°42′48″ S , 149°07′06″ E ; 7–11 May 2022; alt. 400–500 m; J. Constant and L. Semeraro leg.; “Australia Qld, Chillagoe, 17°08’55”S 144°31’43”E, 7-11 May 2022, alt. 400-500m, leg. J. Constant & L. Semeraro, Leopold III Funds Expedition”; QM . Paratypes AUSTRALIA • 8 ♂♂ , 3 ♀♀ ; same collection data as for holotype; QM • 7 ♂♂ , 3 ♀♀ ; same collection data as for holotype; RBINS . Description MEASUREMENTS AND RATIOS . LT: ♂ (n = 15): 10.02 mm (9.71–10.59), ♀ (n = 6): 10.85 (10.64–11.16); BV/LV: ♂ (n = 1): 3.30, ♀ (n = 1): 3.34; BF/LF: ♂ (n = 1): 1.39, ♀ (n = 1): 1.33; LP+LM/BT: ♂ (n = 1): 0.77, ♀ (n = 1): 0.75; LM/LP: ♂ (n = 1): 2.82, ♀ (n = 1): 2.67; LTg/BTg: ♂ (n = 1): 2.66, ♀ (n = 1): 2.81; LW/BW: ♂ (n = 1): 1.58, ♀ (n = 1): 1.64. HEAD ( Figs 73A–D , 74A–D ). Slightly narrower than thorax. Vertex brown irregularly, more or less densely, variegated with black; about 3.3 times as broad as long, concave with all margins slightly carinate; anterior and posterior margins rounded, nearly parallel. Frons brown very densely variegated with black, more densely black than vertex and mostly black in dark specimens; paler along lateroventral margins and often with a weakly marked, irregular paler transverse fascia at level of half height of eyes; dorsal angles marked with a small, yellow-brown subtriangular marking; about 1.3–1.4 times as broad as long, slightly convex, slightly rugulose with peridiscal carina slightly marked; upper margin of frons slightly rounded in perpendicular view of frons; lateral margin incurved above lateral projection of frons, straight under the projection. Clypeus coloured as frons with median line and regular oblique lines on each side of postclypeus dark brown to black, anteclypeus with sides black along outer margin and with median pale reddish-brown line on carina; clypeus reaching mesocoxae, elongate, with median carina on anteclypeus prolongated with obsolete carina on postclypeus; base of clypeus rounded. Labium black-brown, reaching metacoxae, with apical segment as long as broad, acuminate, shorter and slightly more slender than penultimate. Genae brown more or less densely variegated with black. Ocelli absent. Antennae dark brown, not surpassing eye, not visible from above; scape about as long as broad, pedicel subcylindrical, elongate, narrowing towards apex. THORAX ( Figs 73A, C , 74A, C ). About 1.3 times as broad as combined length of pro- and mesonotum. Pronotum brown more or less densely and irregularly variegated with black, mostly like vertex; disc weakly wrinkled, carina parallel to anterior margin and 2 obsolete impressed points on disc usually included in a dark marking; slightly excavate behind middle portion of anterior margin; paranotal lobes brown more densely variegated with black than disc of pronotum. Mesonotum brown rather densely, irregularly variegated with black, generally slightly darker than pronotum and with apex of scutellum often paler; disc weakly wrinkled, median and peridiscal carinae weakly marked; median carina stopped before scutellum. Tegulae bicolour with ventral half black and dorsal half pale brown variegated with black. Fig. 73. Kamabrachys waineri gen. et sp. nov. , holotype, ♂ (QM). A . Habitus, dorsal view. B . Habitus, ventral view. C . Habitus, lateral view. D . Habitus, perpendicular view of frons. E . Posterior wing. F . Metatibia and metatarsus, ventral view. Fig. 74. Kamabrachys waineri gen. et sp. nov. , paratype, ♀ (QM). A . Habitus, dorsal view. B . Habitus, ventral view. C . Habitus, lateral view. D . Habitus, perpendicular view of frons. E . Posterior wing. F . Metatibia and metatarsus, ventral view. TEGMINA ( Figs 73A, C , 74A, C , 79A–F ). Pale brown irregularly variegated with black markings, covered in a fine layer of white wax in live and well preserved specimens making them look greyish; distal portion darker, often with very small whitish apical spot; anteapical transverse white line, often interrupted in middle; usually a broad transverse paler band just before half-length of tegmen, delimitated anteriorly by a rather broad transverse black band at basal ¼ often bearing a short secondary black line posteriorly tapering obliquely from level of claval joint, and posteriorly by a second, usually incomplete, black band; black and pale bands more or less developed and contrasted depending on individuals; some specimens without bands, some specimens with only a squarish black marking in middle of clavus reaching sutural margin or limited to A1 vein, some without bands at all; often a subtriangular whitish marking along costal margin at about ¾ of length. Flat, elongate, about 2.6–2.8 times as long as broad; costal margin weakly rounded along basal fifth, then straight or very weakly rounded to nodal line; apex rounded. VENATION . Veins ScP+RA and RP separated close to base; first fork of MP very basal, at about the level of ScP+RA–RP separation; first fork of CuA before apex of clavus; clavus closed; Pcu and A1 fused at about ¾ of clavus length; Pcu+A1 reaching apical angle of clavus; numerous cells along posterior half of costal margin; numerous cross-veins on apical third delimitating small elongate cells. POSTERIOR WINGS ( Figs 73E , 74E ). Basal half yellow-orange usually narrowly marked with red basally, distal portion and band along posterior margin blackish brown; sometimes a brownish marking extending towards base along vein MP; anal lobe grey-brown; whitish marking along sutural margin between A1 and cubital fold, more or less contrasted depending on individuals. Well developed, as broad as tegmina, about 1.6 times as long as broad, broadly rounded apically; anal area well developed; sutural margin weakly trilobous; not reaching apex of tegmina at rest. All main veins visible from base, forked at or after nodal line and forming a few closed cells; few transverse veinlets delimiting elongate cells on apical ¼; veins A1 and A2 sometimes with 2 terminals. LEGS ( Figs 73A–D, F , 74A–D, F ). Pro- and mesofemora reddish brown densely variegated with black, turning to nearly completely black towards apex; pro- and mesotibiae ventrally brown densely variegated with black, sometimes nearly completely black, dorsum of protibiae blackish brown, dorsum of mesotibiae paler; pro- and mesotarsi paler than corresponding tibia but darker, brownish black, apically; metafemora brown to reddish brown, turning darker towards apex; metatibiae and tarsi coloured as apex of femora, with apex of tibial and tarsal spines darker. Pro- and mesofemora and tibiae dorsoventrally flattened, elongate and slender; metatibiae with 3 lateral and 10 apical spines; first metatarsomere ventrally with grey pad of microsetae at internoapical angle and two rows of 5 spines. Metatibiotarsal formula: (3) 10/4/0. MALE TERMINALIA ( Figs 75–77 ). Pygofer ( Py ) rather short, as high as long and oblique in lateral view, abruptly and rather strongly narrowing in uppermost portion at level of anal tube in lateral view ( Fig. 75A ), about 2.3 times as wide as high in caudal view ( Fig. 75E ); basal apodeme ( bap ) slightly elongate, well developed and sclerotized, sinuate in dorsal view ( Fig. 75A–C ); dorsal portion narrow ( Fig. 75A–B ); lateroventral lobe ( lvl ) projecting posterolaterally and rounded but tapering towards the anterior and posterior in dorsal view, more strongly posteriorly ( Fig. 75B ); in ventral view, tapering and moderately narrowly rounded anteriorly, narrowly rounded posteriorly, rather broadly rounded laterally with posterior portion oblique, inner margin concave ( Fig. 75C ); in lateral view mostly obliquely truncate posteriorly, with posterior margin sinuate and ventral ¼ strongly projecting posterad and forming a slightly acute angle narrowly rounded apically, anteroventral angle more or less angularly rounded, ventral margin broadly rounded on anterior ⅓, then slightly sinuate and broadly rounded along posterior ⅔ ( Fig. 75A ); ventral portion of pygofer separated from lateroventral lobe by a well-marked, deep depression ( Fig. 75C, E ); ventral lamina ( vlp ) about 3.3 times as broad as long with anterior and posterior margins subparallel in ventral view, posterior margin very weakly bisinuate with posterolateral angles rounded and slightly projecting posterad ( Fig. 75C ). Anal tube ( An ) about 1.03 times as broad as long, dorsoventrally flattened ( Fig. 75A ), subcircular, slightly tapering from basal ⅓ towards the posterior, with apical margin weakly emarginate in middle ( Fig. 75B ); paraprocts ( pa ) at basal ¼, well developed. Gonostyli ( G ) 1.28 times as broad as long in ventral view ( Fig. 75C ); ventral process ( vp ) in ventral view subtriangular, rather short with lateral margin rather strongly sinuate ( Fig. 75C ); laterodorsal process ( ldg ) not visible in ventral view ( Fig. 75C ), strongly sinuate in caudal view with mediolateral angle ( mla ) well-marked ( Fig. 75E ), mediolateral angle slightly projecting dorsad ( Fig. 75A, D ), posterior margin deeply, emarginate on ventral half in lateral view ( Fig. 75A ), posterior margin in emargination straight, slightly oblique, upper and lower margins rounded; dorsal hook ( dhg ) subtriangular in lateral view, with anterior margin concave and posterior margin oblique ( Fig. 75A ), apically curved anterolaterad, directed dorsolaterad in caudal view ( Fig. 75E ). Connective ( cv ) strongly developed, about 1.5 times as long as aedeagus s. lat., with anterior pair of lateral apodemes forming a moderately broad elongate lateral lamina directed laterad and tapering apically; posterior pair of apodemes ribbon-like, well developed laterally and slightly twisted ( Fig. 76A–D ). Aedeagus s. lat. moderately upcurved with periandrium slightly surpassing level of apex of aedeagus s. str. posteriorly ( Fig. 76E–I ). Aedeagus s. str. ( Fig. 77A–C ) with apical processes about 6.6 times as long as broad at mid-length; apicoventral process ( avp ) smoothly tapering towards the posterior and narrowly obliquely rounded apically; apicodorsal process ( adp ) in dorsal view ( Fig. 77A ) rather strongly sinuate, strongly inflated, rather regularly tapering towards apex forming a subtriangular blunt point, and shorter than apicoventral process. Dorsal periandrium ( Fig. 77D–F ) with laterodorsal process of periandrium ( ldp ) high in basal portion then abruptly tapering with dorsal margin strongly sinuate in lateral view, ended in a narrow, slightly curved, acute point directed posterodorsad in lateral view, not reaching half-length of lateroventral process ( lvp ) ( Fig. 77D–E ); lateroventral process of periandrium ( lvp ) dorsoventrally flattened, falcate on most length, with acute apical point directed dorsolaterad ( Fig.77D–F ); basomedian processes ( bmp ) apically oblique in dorsal view and with sides parallel in ventral view; median furcate process ( mfp ) with furca about as long as shaft ( Fig. 76I ) and mostly evenly curved dorsad in lateral view ( Fig. 77E ), dorsal crest ( cfp ) on apical ⅔ of arms of furca, mostly vertical in dorsal view ( Fig. 77D ), crest abruptly starting basally with strongly sinuate anterior margin, broadest near base then regularly tapering towards pointed apex and with dorsal margin slightly irregular in lateral view ( Fig. 77E ), inner and outer lateral walls of furca weakly granulose ( Fig. 77D ). Fig. 75. Kamabrachys waineri gen. et sp. nov. , holotype, ♂ (QM), terminalia: pygofer, anal tube and gonostyli. A . Left lateral view. B . Dorsal view. C . Ventral view. D . Left posterolateral view. E . Caudal view. Fig. 76. Kamabrachys waineri gen. et sp. nov. , holotype, ♂ (QM), genitalia. A–D . Aedeagus s. lat. and connective. A . Left lateral view. B . Dorsal view. C . Left laterodorsal view. D . Ventral view. E–I . Aedeagus s. lat., detail. E . Lateral view. F . Left laterodorsal view. G . Dorsal view. H . Ventral view. I . Anterodorsal view. Fig. 77. Kamabrachys waineri gen. et sp. nov. , holotype, ♂ (QM), genitalia. A–C . Aedeagus s. str. A . Dorsal view. B . Left lateral view. C . Ventral view. D–F . Dorsal periandrium. D . Dorsal view. E . Left lateral view. F . Ventral view. Fig. 78. Kamabrachys waineri gen. et sp. nov. , paratype, ♀ (QM), external terminalia. A . Dorsal view. B . Ventral view. C . Posteroventral view. D . Lateral view. Fig. 79. Kamabrachys waineri gen. et sp. nov. in Queensland, Chillagoe, 7–11 May2022. A–C . Specimens on Corymbia erythrophloia (Blakely) K.D.Hill & L.A.S.Johnson (Myrtaceae) . D–E . Specimens on Eucalyptus staigeriana F.Muell. ex F.M.Bailey (Myrtaceae) . F . Specimen on Corymbia tessellaris (F.Muell.) (Myrtaceae) . G–I . Detail of the trunks of the host trees. G . C. erythrophloia . H . E. staigeriana . I . C. tessellaris . FEMALE TERMINALIA ( Fig. 78 ). Abdominal sternite VI ( As VI ) with sides upcurving in posteroventral view ( Fig. 78C ); posterior margin in ventral view ( Fig. 78B ) projecting posteriorly on sides; median subquadrate emargination wide ( Fig. 78B–C ); subtriangular processes moderately developed, rather wide, apically rounded and directed posterodorsad ( Fig. 78B–C ); emargination between subtriangular processes and lateral projection rather deeply rounded ( Fig. 78B–C ); processes of furca of sternite VI ( FAs VI ) rather elongate, pointed, diverging, moderately developed and curved posterodorsad ( Fig. 78B– C ). Inner portion of gonocoxa VIII ( Gx VIII ) strongly curved dorsad ( Fig. 78C ); posterior margin of gonapophysis VIII ( Gy VIII ) projecting rather strongly posterad and apically rounded ( Fig. 78A–B ). Lateroventral excavate membranous fold of gonocoxae VIII between sternite VI and gonapophysis VIII in posteroventral view widely open ( Fig. 78C ). Inner portion of gonapophysis VIII, subtriangular processes and adjacent part of posterior margin of sternite VI, and processes of furca of sternite VI ( FAs VI ) densely covered in short strong setae ( Fig. 78B–C ). Gonoplacs ( Gp ) unilobed, large and semicircular, mostly hiding the anal tube ( Fig. 78D ). Gonocoxal bases IX ( Gb IX ) projecting laterally ( Fig. 78C ). Gonapophysis IX ( Gy IX ) flattened laterally, reflexed posterodorsad and strongly tapering apically ( Fig. 78B, D ). Anal tube ( An ) elongate and narrow, curved posteroventrad, v-shaped in cross section beyond anus, lanceolate in dorsal view ( Fig. 78A, C ). Fig. 80. Kamabrachys waineri gen. et sp. nov. , habitat in Queensland, Chillagoe. A . 8 May 2022, near Balancing Rock. B . 9 May 2022, near Royal Arch Cave. SEXUAL DIMORPHISM . Female about 8% larger than male. Distribution and biology The species is currently recorded from a single location in northeastern Queensland , Chillagoe ( Fig. 5B ). Bioregion: Einasleigh Uplands. The species seems polyphagous on several foodplants that belong to the family Myrtaceae : Corymbia erythrophloia (Blakely) K.D.Hill & L.A.S.Johnson , C. tessellaris (F. Muell.) K.D.Hill & L.A.S.Johnson and Eucalyptus staigeriana F.Muell. ex F.M.Bailey ( Fig. 79G–I ). Their cryptic colouration makes the specimens very hard to detect on the trunks where they tend to hide in the cracks and crevices, making their camouflage even more efficient ( Fig. 79A–F ). The species did not seem very rare in its habitat, open Eucalyptus woodland ( Fig. 80 ).