Kamabrachys campbelli Constant 2023, gen. et sp. nov.
Creators: name: Constant, Jérôme
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Eurybrachidae
Kamabrachys
Kamabrachys campbelli

description: Kamabrachys campbelli gen. et sp. nov.
urn:lsid:zoobank.org:act: A46A928F-5BC0-4636-8BFF-3A3EA912DF41
Figs 5A, 16–21
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. 18A) and tapering towards the posterior in ventral view (Fig. 18C), inner margin of lobes straight in ventral view (Fig. 18C), ventral margin rounded in caudal view (Fig. 18E);
(2) posterior margin of laterodorsal process of gonostylus (ldg) moderately emarginate, leaving a rather widely open angle between laterodorsal process and ventral process of gonostylus (vp) in lateral view (Fig. 18A);
(3) crest of furcate process of periandrium (cfp) only along distal portion and not merging basally (Fig. 20D), in lateral view, tapering in distal portion (Fig. 20E);
(4) laterodorsal process of periandrium (ldp) tapering in distal portion and curved dorsad, not surpassing lateroventral process (lvp) laterally and reaching slightly over half length of the lateroventral process (lvp) (Fig. 20D–E);
(5) lateroventral process of periandrium (lvp) dorsoventrally flattened on long basal portion up to strongly curved laterodorsad distal portion (Fig. 20D–F);
(6) apicodorsal process of aedeagus (adp) moderately sinuate, rather wide and stocky distally and tapering apically, and shorter than apicoventral process (avp) (Fig. 20A–C);
(7) posterior wing with weakly marked whitish marking along sutural margin (Fig. 16A).
Etymology
The species epithet is a patronym referring to the Australian entomologist Thomas Graham Campbell who collected the type series.
Type material
Holotype AUSTRALIA • ♂; [Queensland], Macrossan, [Burdekin]; [19°59′50″ S, 146°26′22″ E]; 10 Jun. 1958; T.G. Campbell leg.; “Macrossan, Burekin Q., 10 Jun 1958, T.G. Campbell”; ANIC.
Paratypes AUSTRALIA • 1 ♂, 1 ♀; same collection data as for holotype; ANIC • 2 ♂♂; same collection data as for holotype; RBINS.
Note
“Burekin” on the labels of the type specimens, is a typo for “Burdekin” River.
Description
MEASUREMENTS AND RATIOS. LT: ♂ (n = 4): 9.84 mm (9.74–10.00), ♀ (n = 1): 11.08 mm; BV/LV: ♂ (n = 1): 3.36, ♀ (n = 1): 3.52; BF/LF: ♂ (n = 1): 1.29, ♀ (n = 1): 1.33; LP+LM/BT: ♂ (n = 1): 0.82, ♀ (n = 1): 0.81; LM/LP: ♂ (n = 1): 3.07, ♀ (n = 1): 2.96; LTg/BTg: ♂ (n = 1): 2.65, ♀ (n = 1): 2.66; LW/ BW: ♂ (n = 1): 1.74, ♀ (n = 1): 1.69.
HEAD (Figs 16A–D, 17A–D). Slightly narrower than thorax. Vertex brown irregularly, rather poorly variegated with black; about 3.4–3.5 times as broad as long, concave with all margins slightly carinate; anterior and posterior margins rounded, nearly parallel, with anterior margin slightly more strongly rounded in middle portion. Frons brown irregularly, rather densely variegated with black, more densely black than vertex; darker along lateral angles and dorsal margin; dorsal angles marked with a small, yellow-brown subtriangular marking; often with a slightly paler median marking in upper half of middle area of frons; about 1.3 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 slightly incurved above lateral projection of frons, slightly rounded under the projection. Clypeus reddish brown with median line and regular oblique lines on each side of postclypeus darker, anteclypeus reddish brown 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 brown, reaching metacoxae, with apical segment as long as broad, acuminate, shorter and slightly more slender than penultimate. Genae yellow-brown. Ocelli absent. Antennae brown, not surpassing eye, not visible from above; scape about as long as broad, pedicel subcylindrical, elongate, narrowing towards apex.
THORAX (Figs 16A, C, 17A, C). About 1.2 times as broad as combined length of pro- and mesonotum. Pronotum brown irregularly variegated with black, similarly as vertex, with portion anterior to anterior carina yellowish and usually a transverse black marking in middle of disc; disc weakly wrinkled, carina parallel to anterior margin; 2 obsolete impressed points on disc usually included in black marking; paranotal lobes brown. Mesonotum brown irregularly variegated with black, slightly more densely black and generally darker than pronotum; 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.
TEGMINA (Figs 16A–C, 17A–C). Brown irregularly variegated with darker and paler black markings; anteapical transverse white line strongly narrowing in middle portion, often reduced to 2 white, elongate triangles; apex often with a narrow white marking extending along up to 4 cells; sometimes 2 incomplete transverse black bands, more basal one at basal ¼, second one at mid-length of tegmen, often only basal band just marked by a dark marking in clavus. Flat, elongate, about 2.65 times as long as broad; costal margin weakly rounded along basal fifth, then straight nodal line; apex rounded.
VENATION. Veins ScP+RA and RP separated close to base; first fork of MP very basal, at the level of ScP+RA–RP separation; first fork of CuA slightly 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 16A–B, 17A–B). Pale yellow with apical ⅓ and moderately broad band along posterior margin blackish brown (apical portion darker), anal area largely grey, somewhat paler area along middle portion of posterior margin. Well developed, as broad as tegmina, about 1.7 times as long as broad, 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 16A–D, 17A–D). Pro- and mesofemora and tibiae reddish brown more or less densely variegated with dark brown; pro- and mesotarsi paler than corresponding tibia but slightly darker apically; posterior legs reddish brown 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 darker pad of microsetae at internoapical angle and two rows of 5 spines. Metatibiotarsal formula: (3) 10/4/0.
MALE TERMINALIA (Figs 18–20). Pygofer (Py) rather short, as high as long and oblique in lateral view (Fig.18A), about 2.0 times as wide as high in caudal view (Fig. 18E); basal apodeme (bap) well developed and sclerotized, sinuate in dorsal view (Fig. 18A–C); dorsal portion narrow (Fig. 18A–B); lateroventral lobe (lvl) projecting posterolaterally and rounded but tapering towards the anterior and posterior in dorsal view (Fig. 18B); in ventral view, tapering and narrowly rounded anteriorly and posteriorly, more broadly rounded laterally and with inner margin straight (Fig. 18C); in lateral view mostly obliquely truncate posteriorly, with posterior margin slightly sinuate along upper + / 5 and ventral 1 / 5 somewhat angularly projecting posterad, anteroventral angle more or less rounded (Fig. 18A); ventral portion separated from lateroventral lobe by a well-marked, rather narrow depression (Fig. 18C, E); ventral lamina (vlp) about 3.2 times as broad as long with anterior and posterior margins subparallel in ventral view, posterior margin slightly bisinuate with posterolateral angles rounded and weakly projecting posterad (Fig. 18C). Anal tube about as broad as long (An) dorsoventrally flattened (Fig. 18A), oval with base and apex more strongly rounded than side margins; side margins weakly tapering towards apex; apical margin slightly indented in middle (Fig. 18B); paraprocts (pa) at basal ¼, well developed. Gonostyli (G) 1.29 times as broad as long in ventral view (Fig. 18C); ventral process (vp) in ventral view subtriangular with lateral margin very weakly sinuate, then narrowly rounded apically (Fig. 18C); laterodorsal process (ldg) partly visible in ventral view (Fig. 18C), sinuate in caudal view with mediolateral angle (mla) well-marked (Fig. 18E), mediolateral angle projecting laterally (Fig. 18A, D); dorsal hook (dhg) curved in lateral view, with anterior margin angularly sinuate basally and posterior margin indentate basally (Fig. 18A), and apex of hook curved cephalad (Fig. 18B). Connective (cv) strongly developed, about 1.5 times as long as aedeagus s. lat., with anterior pair of lateral apodemes forming a moderately broad lateral lamina directed posterolaterad and broadened apically; posterior pair of apodemes ribbon-like, strongly developed laterally and sinuate (Fig. 19A–D). Aedeagus s. lat. moderately upcurved with aedeagus s. str. slightly surpassing periandrium posterad (Fig. 19E–I). Aedeagus s. str. (Fig. 20A–C) with apical processes about 7.6 times as long as broad at mid-length; apicoventral process (avp) smoothly tapering towards the posterior and narrowly rounded apically; apicodorsal process (adp) in dorsal view (Fig. 20A) rather strongly inflated and stocky, then abruptly tapering towards apex, ending in a thick point and much shorter than apicoventral process. Dorsal periandrium (Fig. 20D–F) with laterodorsal processes (ldp) more or less oval in cross-section and gently curved dorsad along basal ⅔, then abruptly curved with apical ⅓ directed dorsad, strongly tapering and apically pointed; lateroventral processes (lvp) dorsoventrally flattened on basal + / 5, then strongly curved laterad and strongly tapering into an apical point directed laterodorsad, slightly broadening from base to first ⅓, then gently tapering up to distal 1 / 5, projecting posterolaterally largely beyond laterodorsal processes; basomedian processes (bmp) apically truncate in dorsal view and with sides parallel in ventral view; median furcate process (mfp) with furca slightly shorter than shaft (Fig. 19I) and moderately upcurved in lateral view (Fig. 20E), dorsal crest (cfp) on distal ¾ of arms of furca, not reflexed in dorsal view (Fig. 20D), crest broad and rounded basally then gently tapering towards apex and with dorsal margin undulated in lateral view (Fig. 20E), inner and outer lateral walls of furca slightly granulose (Fig. 20D).
FEMALE TERMINALIA (Fig. 21). Abdominal sternite VI (As VI) with sides upcurving in posteroventral view (Fig. 21C); posterior margin in ventral view (Fig. 21A) moderately projecting posteriorly on sides; median subquadrate emargination wide; subtriangular processes more or less digitiform, rather elongate, apically rounded and directed posterodorsad (Fig. 21A, C); emargination between subtriangular processes and lateral projection moderately deeply rounded (Fig. 21A, C); processes of furca of sternite VI (FAs VI) pointed, diverging, moderately developed and curved posterodorsad (Fig. 21A, C – mostly hidden under gonapophysis IX on Fig.). Inner portion of gonocoxa VIII (Gx VIII) rather strongly curved dorsad (Fig. 21C); posterior margin of gonapophysis (Gy VIII) projecting rather strongly posterad and apically rounded (Fig. 21A). Lateroventral excavate membranous fold of gonocoxae VIII between sternite VI and gonapophysis VIII in posteroventral view widely open (Fig. 21C). 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. 21A, C). Gonoplacs (Gp) unilobed, large and semicircular, mostly hiding the anal tube (Fig. 21B). Gonocoxal bases IX (Gb IX) projecting laterally (Fig. 21A, C). Gonapophysis IX (Gy IX) flattened laterally, strongly reflexed posterodorsad and strongly tapering apically (Fig. 21B). Anal tube (An) elongate and narrow, curved posteroventrad, v-shaped in cross section beyond anus.
SEXUAL DIMORPHISM. Female about 13% larger than male.
Distribution and biology
The species is currently recorded from a single location of the middle portion of eastern Queensland, near Charter Towers (Fig. 5A), in Macrossan. Bioregion: Einasleigh Uplands.
The five specimens of the type series were all collected on the same day during the month of June.
Host plant unknown.
description: Published as part of Constant, Jérôme, 2023, Revision of the Eurybrachidae (XVII). The new Australian genus Kamabrachys gen. nov. with ten new species (Hemiptera: Fulgoromorpha), pp. 1-133 in European Journal of Taxonomy 895 (1) on pages 29-38, DOI: 10.5852/ejt.2023.895.2289, http://zenodo.org/record/8402224