Olonia jackiei Constant, 2024, sp. nov.
Creators: name: Constant, Jérôme
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Eurybrachidae
Olonia
Olonia jackiei

description: Olonia jackiei sp. nov.
urn:lsid:zoobank.org:act: 3AD1C2AF-F10C-43F0-83D8-F3A13FABD413
Figs 6B, 14–17
Diagnosis
The species can be recognized by the following combination of characters:
(1) hind wings with orange marking weakly marked or absent (Figs 14E, 16E);
(2) pro- and mesofemora and tibiae mostly blackish brown to black (Figs 14A–B, 16A–B);
(3) anal tube of male spatulate, constricted at anal opening and with posterior margin rounded (Fig. 15E);
(4) centroventral part of gonostyli narrowing into a straight elongate process with the distal ¼ slightly thicker in ventral view and apical short point curved lateroventrad (Fig. 15A–C);
(5) laterodorsal part of gonostyli directed dorsad then strongly curved ventrad with distal portion sinuate dorsad, slightly surpassing half-length of centroventral part (Fig. 15A–C);
(6) rather small size: 6.7–7.8 mm.
Differential diagnosis
The closest species is O. lindae sp. nov. from which O. jackiei sp. nov. differs by the distally sinuate processes of the laterodorsal part of the gonostyli (regularly curved in O. lindae), and directed mesocaudad in ventral view (curved and directed posterolaterad in O. lindae).
Etymology
The species epithet is a patronym dedicated to Dr Jackie Van Goethem (RBINS – Leopold III Funds) in acknowledgement for all his support to the work of the author over the years.
Type material
Holotype AUSTRALIA • ♂; Queensland, Mareeba, Emerald Hill; 16°58′ S, 145°26′ E; 11–14 Apr. 2002; elev. 420 m; G.B. Monteith leg.; mv light; 10528; QM.
Paratypes AUSTRALIA – Queensland • 1 ♂; Mareeba; 16°59′56″ S, 145°25′26″ E; Feb. 1979 [no day given]; K.W. Halfpapp leg.; on rice; QM • 1 ♂; Southedge-Lakes Road, 4.8 km NW of Lake Mitchell, stop 21; 16°46.208′ S, 145°23.137′ E; 27 Jul. 2018; D.C.F. Rentz leg.; MLM 02237; DIDPR • 1 ♀; same data as for preceding; MLM 02238; QM • 1 ♀; same data as for preceding; MLM 02230; RBINS • 1 ♂; Millstream, Gigliotti Road; 17°38′22″ S, 145°24′04″ E; 5 May 2022; elev. 780 m; J. Constant and L. Semeraro leg.; Leopold III Funds exped.; RBINS • 1 ♂; Pinnacle Creek, W of Dimbulah; 17°13′06.6″ S, 145°00′24.1″ E; 1 Sep. 2005; L.J. Cookson leg.; MVMA • 1 ♂; Atherton Tableland, Dimbulah; [17°08′56″ S, 145°06′39″ E]; Aug. 1962; R. O’Brien leg.; on Asteraceae; ex J.W. Evans Collection Donated 1986; MJF collection, MJF003336; ASCU • 1 ♂; Hot Springs; [17°40′21″ S, 145°14′31″ E; 11 Jan. 1962; Carne and Britton leg.; ANIC • 1 ♂; Atherton Road, 4 km S of Mareeba; [17°03′36″ S, 145°26′01″ E]; 7 Feb. 1965; J.G. Brooks leg.; ANIC.
Additional material examined
AUSTRALIA – Queensland • 6 nymphs; Millstream, Gigliotti Road; 17°38′22″ S, 145°24′04″ E; 5 May 2022; elev. 780 m; J. Constant and L. Semeraro leg.; Leopold III Funds exped.; QM • 5 nymphs; same data as for preceding; RBINS.
Description
MEASUREMENTS AND RATIOS. LT: ♂ (n = 7): 7.0 mm (6.7–7.8); ♀ (n = 2): 7.6 mm (7.3–7.8); BV/LV = 3.8; BF/LF = 1.82; LP+LM/BT = 0.63; Ltg/BTg = 2.48; LW/BW = 1.98.
Male
HEAD (Fig. 14A–D). Vertex slightly concave with anterior and posterior margins parallel, curved; dark brown; median carina obsolete or absent. Posterior part of head with yellowish markings. Frons uniformly black-brown. Genae dark brown with paler markings along anterior margin behind lateral expansion of frons. Clypeus elongate, entirely black-brown. Labium dark brown, surpassing mesocoxae. Antennae black-brown; scape short, ring-shaped; pedicel subcylindrical, slightly narrowing towards apex.
THORAX (Fig. 14A–D). Pronotum dark brown; slightly wrinkled; two small impressed points on disc slightly marked. Lateral fields of prothorax coloured as pronotum. Mesonotum dark brown; yellowish at apex of scutellum and in middle of anterior margin; median and peridiscal carinae weakly marked; median carina ending before scutellum; slight impression before scutellum. Red ventrally. Tegulae brown.
TEGMINA (Fig. 14A, C). Rather dark brown; yellowish marking on vein A1 at midlength of clavus; marked with black along costal margin, more broadly so on posterior half and along posterior margin; darker, median, irregular marking at distal ⅔; conspicuous triangular white marking on costal margin on nodal line; sometimes, some small white spots at apicosutural angle. Costal and sutural margins subparallel; costal margin slightly sinuate; apical margin obliquely rounded with preapical oblique depression.
POSTERIOR WINGS (Fig. 14E). Black, paler on anal area; rather weak orange-brown marking in middle portion between veins CuP and A1; triangular white marking at apicocostal angle, extending on 1–2 cells. Margin of anal area slightly sinuate; sutural margin with two clefts, cubital one weakly marked.
LEGS (Fig. 14A–D). Pro- and mesocoxae dark brown. Pro- and mesofemora and corresponding tibiae black with few small yellowish brown markings. Pro- and mesotarsi black-brown with basal half of third tarsomere paler. Metacoxae reddish brown; metafemora reddish, black-brown distally. Metatibiae dark brown, darker towards apex, with three lateral spines paler basally, and 9 apical black spines. Metatarsi brown with a ventral row of 6–8 black spines on first tarsomere. Metatibiotarsal formula: (3) 9/6–8/0.
ABDOMEN. Bright red with genital segments black-brown.
MALE TERMINALIA (Fig. 15). Posterior margin of pygofer (Py) in lateral view rather strongly sinuate, roundly projecting at dorsal ¼, moderately broad ventrally (Fig. 15A–B). Anal tube (An) spatulate, 2.1 times as long as broad, laterally rather strongly constricted at level of epiproct (ep), slightly curved ventrally in lateral view; lateral margins slightly curved ventrally on distal ⅔; apical margin rounded (Fig. 15A–E). Gonostyli (G) fused on basal ¼ of length of centroventral part (cvp) and projecting posteriorly (Fig. 15A–F). Centroventral part of gonostyli moderately broad and dorsoventrally flattened on basal ¼, then bulged and strongly sinuate dorsad, then caudad in lateral view, then further narrowing into an elongate process nearly straight in ventral as well as in lateral view, with the distal ¼ slightly thicker in ventral view; apex with short point curved lateroventrad (Fig. 15A–C). Laterodorsal part (ldp) of gonostyli robust and directed dorsad in basal half in lateral view, then strongly curved ventrad with distal portion sinuate, slightly recurved dorsad, slightly surpassing half-length of centroventral part, with apex reaching under the level of centroventral part in lateral view; in ventral view nearly straight, slightly directed mesad towards the apex; lateral process (lp) elongate, about as long as spoon-shaped process (ssp), projecting laterally and slightly curved anteriorly (Fig. 15A–E). Dorsal portion of phallobase (dpp) with elongate process on each side, directed mesocaudad in dorsal view, in lateral view gently upcurved, then abruptly hooked dorsad near apex; hook in lateral view pointing dorsally with posterior margin sinuate (Fig. 15G–I). Ventral portion of phallobase widening from base towards apex, trilobed in dorsal view, with median lobe surpassing phallus (Fig. 15I). Phallus dorsoventrally flattened, rather broad, with apical margin emarginate in middle (Fig. 15G–I). Connective (cv) elongate and narrow, without tectiductus (Fig. 15G–H).
Female
Similar to male but darker, without triangular white marking on costal margin on nodal line of tegmina, and posterior wings with orange-brown marking in middle portion between veins CuP and A1, as well as white marking at apicocostal angle, absent or very weakly marked (Fig. 16).
Distribution and biology
This species is currently recorded from the Atherton Tablelands in North Queensland (Fig. 6B), in the Einasleigh Upland Savanna bioregion. The specimens were collected in January, February, May, July, August and September. One specimen from Mareeba in QM was collected from rice (Oryza sativa L., Poaceae), one in ASCU, from unidentified Asteraceae Bercht. & J.Presl and another one in QM, attracted to a light trap. From these, it is very unlikely that rice could actually be a host plant of the species, as no monocot is recorded as a host plant for a Eurybrachidae so far (Bourgoin 2023). In Millstream in May 2022, the species was collected in open Eucalyptus woodland by sweeping unidentified short, yellowflowered Fabaceae in a recently mown zone along the road (Fig. 17); numerous nymphs were found together with a single adult male.
description: Published as part of Constant, Jérôme, 2024, Revision of the Eurybrachidae XVIII. The Australian genus Olonia Stål, 1862: Four new species, new records and biological data (Hemiptera: Fulgoromorpha), pp. 1-51 in European Journal of Taxonomy 941 (1) on pages 26-31, DOI: 10.5852/ejt.2024.941.2579, http://zenodo.org/record/12533699