Constant, Jérôme, 2018, Revision of the Eurybrachidae XIV. The Australian genera Olonia Stål, 1862 and Stalobrachys gen. nov. (Hemiptera: Fulgoromorpha), European Journal of Taxonomy 486, pp. 1-97: 25-30
treatment provided by
Olonia hochae sp. nov.
This species can be recognized by the following combination of characters:
(3) anal tube of male oblong, with posterior margin narrowly rounded ( Fig. 13BView Fig. 13)
(4) centroventral part of gonostyli with long laminate process concave on ventral margin ( Fig. 13A, CView Fig. 13) (5) laterodorsal part of gonostyli with spinose process curved ventrally ( Fig. 13A, C –DView Fig. 13)
(6) rather large size: 9–10 mm
This species is dedicated to Dr Hannelore Hoch, who collected the paratypes series together with Dr Manfred Asche. But ladies first!
Holotype AUSTRALIA • ♁; Queensland, Undara National Park ; 18°15′ S, 144°41′ E; “QLD: 18°15′Sx144°41′E, Undara NP, 17 ft Bore. 8 Dec 2002 – 8 Feb 2003, G. Monteith, vine scrub. fit intercept. 11252”, “ QM- T244703 ”; QM.GoogleMaps
Paratypes AUSTRALIA • 4 ♁♁, 4 ♀♀; “ Australia: Queensland, Undara Lava flow: betw. Mt. Garnet & Mt. Surprise, Yarramulla Sta.: surface around Pinwill’s Cave ”, “ 18.i.1989, Au 24, M. Asche & H. Hoch ”; ZMHB • 1 ♁, 1 ♀; same collection data as for preceding; RBINS .
MEASUREMENTS AND RATIOS. LT: ♁ (n = 4): 9.7 mm (9.4–9.9); ♀ (n = 5): 10.4 mm (10.0–10.8); BV/LV = 3.9; BF/LF = 1.75; LP+LM/BT = 0.68; Ltg/BTg = 2.40–2.45; LW/BW = 1.78.
HEAD ( Fig. 12A –DView Fig. 12). Vertex concave, with anterior and posterior margins parallel, curved; dark brown variegated with yellowish in middle. Frons black-brown, slightly tinged with reddish medioventrally. Clypeus elongate, black-brown with 2 short, black, longitudinal lines at base, with oblique reddish lines on sides and with apex darker. Genae brown with yellowish markings along anterior margin. Labium black, reaching metacoxae. Antennae black; scape short, ring-shaped; pedicel subcylindrical, slightly narrowing towards apex.
THORAX ( Fig. 12A –DView Fig. 12). Pronotum dark brown with some yellowish markings; slightly transversely wrinkled posteriorly; obsolete median carina and 2 small impressed points on disc. Lateral fields of prothorax dark brown. Mesonotum black-brown with reddish markings along posterior margin, median yellowish spot along anterior margin and at apex of scutellum; slightly wrinkled; median and peridiscal carinae weakly marked; median carina stopping before scutellum; slight impression before scutellum. Red ventrally. Tegulae brown.
TEGMINA ( Fig. 12A, CView Fig. 12). Dark brown with small yellowish or reddish spots; bigger, yellowish, slightly transverse spot on middle of clavus; large triangular white marking on costal margin on nodal line; white spot at apicosutural angle. Maximum breadth at nodal line; costal margin slightly sinuate; apical margin obliquely rounded.
POSTERIOR WINGS ( Fig. 12EView Fig. 12). Brown with apical ½ black-brown; transverse, broad, subtriangular white marking at apicocostal angle, extending on 6 cells. Margin of anal area sinuate; sutural margin with 2 clefts, cubital one slightly marked.
LEGS ( Fig. 12A –DView Fig. 12). Pro- and mesocoxae dark brown. Pro- and mesofemora black-brown with reddish spots marking 2 obsolete rings. Pro- and mesotibiae black-brown with 3 obsolete ring-shaped reddish or yellowish markings, larger one near apex. Pro- and mesotarsi dark brown. Metacoxae reddish brown; metafemora red with apex dark brown. Metatibiae brown, with 3 lateral spines yellowish basally and 8 apical, black-brown spines. Metatarsi brown, with a ventral row of 6 black spines on first tarsomere.
ABDOMEN. Bright red with genital segments black-brown.
MALE GENITALIA ( Fig. 13View Fig. 13). Posterior margin of pygofer in lateral view strongly sinuate, strongly roundly projecting at dorsal ½, narrow ventrally ( Fig. 13A, CView Fig. 13). Anal tube oblong, 3.6 times as long as broad, slightly curved ventrally in lateral view; slightly constricted on basal ½ and narrowing towards apex in dorsal view; lateral margins sinuate and slightly curved ventrally on apical ¾; apical margin narrowly rounded ( Fig. 13A –BView Fig. 13). Gonostyli fused to slightly further than basal third of centroventral part and projecting posterodorsally ( Fig. 13A, CView Fig. 13). Centroventral part dorsoventrally flattened basally, progressively twisted and laminate towards apex and with ventral margin concave in lateral view; slightly broader apically in lateral view with apical margin strongly sinuate, apicodorsal angle pointed and apicoventral angle rounded ( Fig. 13A, CView Fig. 13). Laterodorsal part of gonostyli with ventrally strongly curved, hooked process, with lateral process rather broad and about as long as spoon-shaped process ( Fig. 13A, C –DView Fig. 13). Dorsal portion of phallobase with strongly elongated process on each side, pointing dorsally and slightly internally ( Fig. 13E –FView Fig. 13). Ventral portion of phallobase along lateral margin of phallus on basal two thirds, then under phallus, narrowing and bifid apically, directed posterodorsally ( Fig. 13E –FView Fig. 13). Phallus dorsoventrally flattened, elongate, with apical margin emarginate in dorsal view ( Fig. 13E –FView Fig. 13).
Similar to male, but darker; frons entirely black-brown; markings on pro- and mesofemora nearly absent; markings on pro- and mesotibiae reduced; white markings on tegmina smaller ( Fig. 14View Fig. 14).
Distribution and biology
This species is currently known from a series of ten specimens collected near Undara Lava Tubes in North Queensland ( Fig. 3View Fig. 3), in the Einasleigh Upland Savanna bioregion. All specimens were collected in January, on the same day; hence, the species is probably not scarce in its habitat.
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