Orinda (Montorinda) montana, Constant & Semeraro, 2023

Constant, Jérôme & Semeraro, Linda, 2023, The Australian issid planthopper genus Orinda Kirkaldy, 1907: New subgenera, new species, host plant and identification key (Hemiptera: Fulgoromorpha: Issidae), European Journal of Taxonomy 891, pp. 128-150 : 138-144

Orinda (Montorinda) montana sp. nov.

urn:lsid:zoobank.org:act:B882CD18-8D1D-45B7-A625-AC331F55AB4F

Figs 4C–D , 6–10

Diagnosis

The species can be separated from the other species of Orinda by the combination of the following characters:

1. Posterior wings well developed, trilobate ( Figs 7F , 8D ).

2. Body parallel-sided in dorsal view ( Figs 7A , 8A ).

3. Posterior wings with CuA and CuP merging apically ( Figs 7F , 8D ).

4. Anterior tibiae rather short and laterally dilated, with lateral margin broadly rounded about 3.8 × as long as wide ( Figs 7A–B, D , 8A–B, F ).

5. Dorsal process of gonostyli with anterior margin curved anteriorly in lateral view ( Fig. 9A ).

6. Gonostyli in posterior view with strong lateral hump under the dorsal process ( Fig. 9C ).

7. Aedeagus in anterodorsal view smoothly obliquely expanded laterally at about midlength ( Fig. 9J ).

Etymology

The species epithet refers to the habitat of the species at the type locality, the summit of Mount Walsh National Park.

Type material

Holotype AUSTRALIA • Ô, dissected, genitalia in glycerine, right posterior wing mounted; Queensland, Mount Walsh N.P. ; 25°34′00″ S, 152°02′58″ E; 14 Dec. 2019; summit, sweeping Grevillea whiteana Mc Gill. ; J. Constant leg.; QM.

Paratypes

AUSTRALIA • 2 ♀♀; same collection data as for holotype; QM • 1 Ô, 1 ♀; same collection data as for holotype; RBINS .

Description

MEASUREMENTS AND RATIOS: LT: Ô (n = 2): 3.8 mm; ♀ (n = 3): 4.0 mm (3.9–4.1). LTg/BB = 1.45; LV/ BV = 0.41; LF/BF = 0.9; LW/BW: Ô: 1.58, ♀: 1.53.

HEAD ( Figs 7A–E , 8A–C, E–F ). Vertex yellow-brown to brown, longitudinally rather deeply excavate, slightly shorter in midline than along lateral margins; all margins carinate, lateral ones sinuate, anterior one more or less straight, posterior one deeply excavate. Frons variegated yellow-brown and brown to dark brown with a row of yellow-brown spots, more or less contrasted, along lateral margins, rugose, weakly convex in lateral view, with dorsal margin deeply excavate and lateral margins sinuate in perpendicular view; wider in ventral half; median carina well marked, not reaching fronto-clypeal suture ventrally and stopping at peridiscal carina dorsally; peridiscal carina complete. Genae bicolour in two well delimited areas, pale yellow in anterodorsal portion, dark brown to black in posteroventral portion. Antennae brown to dark brown with base of pedicel narrowly black; scape short, pedicel bulbous. Eyes strongly protruding, projecting dorsolaterally in anterior view and projecting posteriorly behind the level of vertex in dorsal view. Clypeus brown to dark brown with paler markings on sides, triangular, longer than width at base. Labium brown with last segment darker, turning to black on distal half, elongate and narrow, with last segment longer than wide, slightly tapering towards apex and shorter than penultimate. THORAX ( Figs 7A, C–E , 8A, C, E–F ). Pronotum pale yellow-brown to brown with more or less contrasted, irregular yellowish tubercles and yellowish median carina; anterior margin carinate and angularly projecting anteriorly in midline, posterior margin weakly rounded; disc shallowly concave with one impressed point on each side of median carina; median carina extending from anterior to posterior margin. Paranotal lobes brown to dark brown with pale yellow tubercles along upper portion of lateral margin; lateral margin rounded, lateroventral angle slightly projecting ventrally, angularly rounded. Mesonotum yellow-brown to brown, slightly longer then pronotum in midline with obsolete median carina not reaching apex of scutellum; transverse elevation at base of scutellum followed by a depression in middle of scutellum. Tegulae pale brown.

TEGMINA ( Figs 7A–C, E , 8A–C, E ). Dark brown with minute yellowish-brown spots; a broad transverse band from basal ¼ to midlength and distal portion, paler, more or less contrasted yellowish-brown with small darker spots; elongate and convex; sides more or less parallel in dorsal view with distal ⅓ roundly tapering; costal margin rather strongly excavate at basal ¼, with narrow hypocostal plate from base to end of excavation; humped at apex of clavus in lateral view. Basal cell elongate and rather narrow. Longitudinal veins raised, transverse cross-veins numerous and weakly raised. Vein ScP+R forked near base; MP forked at about ⅓ of tegmen length; CuA forked slightly distally to first fork of MP; Pcu and A1 fused at about ⅔ of clavus length, Pcu+A1 reaching apex of clavus.

POSTERIOR WINGS ( Figs 7F , 8D ). Strongly infuscate with dark brown veins; trilobed with deep CuP notch, less deep A1 notch and margin concave at A2; Sc-R-Mp-CuA lobe wider than CuP-Pcu-A1 lobe, latter about as wide as A2 lobe. Veins: ScP+R and CuA bifurcate, MP, CuP and A2 simple; Pcu and A1 fused on a long distance basally, Pcu unforked; one transverse vein between second branch of ScP+R and MP and between MP and first branch of CuA; second branch of CuA and CuP fused distally.

LEGS ( Figs 7A–E , 8A–C, E–G ). Pro- and mesocoxae pale yellow with base dark brown; pro- and mesotrochanters pale yellow with small brown marking; profemora black with more or less developed pale yellow markings, slightly wider than corresponding tibiae; protibiae dark brown with few pale yellow markings, rather short and laterally dilated, with lateral margin broadly rounded, about 3.8× as long as wide in ventral view; protarsi brown to black-brown; mesofemora mostly brown to dark brown dorsally, with some pale yellow markings, paler ventrally with some darker and paler brown markings, wider than corresponding tibiae; mesotibiae dark brown to black with basal marking and distal ⅓ pale yellow; mesotarsi pale yellow; metacoxae and trochanters brown; metafemora brown to dark brown, distally with blackish and pale yellow markings; metatibiae brown with distal half except apex, pale yellow, with 2 lateral and 6 apical spines; all spines of metatibiae and metatarsi apically black; first metatarsomere with 7 apical spines, second metatarsomere with 2 apical spines. Metatibiotarsal formula: (2) 6/7/2.

ABDOMEN ( Figs 7B , 8B ). Dark brown.

MALE TERMINALIA ( Figs 4C–D , 9 ). Pygofer ( Fig. 9A–D ) narrow in lateral view with anterior and posterior margins nearly parallel; posterior margin slightly sinuate, making pygofer slightly wider at about ventral ⅓; in caudal view, about 1.32 × as high as wide and with lateral margins broadly rounded; posterior margin deeply U-shaped notched in dorsal view. Gonostyli ( Fig. 9A–C ) rather short and convex; in lateral view, subquadrate with dorsal margin oblique, ventral margin rounded basally then weakly rounded and oblique, posteroventral angle angularly rounded, posterior margin slightly convex, a rather strong oblique elongate swelling from base of dorsal process to basoventral angle; in caudal view, posterior margin strongly sinuate and lateral margin broadly rounded, upper part of lateral swelling strongly projecting laterally to almost right angle; dorsal process laterally flattened, with apical small tooth, in lateral view with anterior margin curved anteriorly and posterior margin rather strongly rounded. Aedeagus ( Figs4C–D , 9E–L ) rather strongly curved dorsad in lateral view with pair of spinose basidorsal processes directed posterodorsad, straight in lateral view and curved in dorsal view; aedeagus in anterodorsal view smoothly obliquely expanded laterally at about midlength. Connective elongate, strongly curved ventrad on basal half then straight, with strongly developed, subtubular tectiductus widening from base to apex; apical opening circular. Dorsal lobe of periandrium rather wide in dorsal view, with subapical median carina well developed and rounded in lateral view, forming an angular projection directed cephalad on apical margin in dorsal view. Ventral lobe of periandrium rather poorly sclerotized, ending in 2 rounded projections and with angular lateral process directed dorsocephalad near angle of aedeagus (best visible in laterodorsal view). Anal tube ( Fig. 9A–D ) elongate and dorsoventrally flattened, surpassing level of gonostyli; in dorsal view, 1.70× as long (in midline) as wide, suboval with apical margin rounded and lateral margins rather abruptly emarginate on basal 1 / 5; anal opening at basal 1 / 5, anal column surpassing basal ⅓; in lateral view, ventral margin projecting ventrally at basal ¼ into roundly angular process, then weakly concave on remaining distal portion, dorsal margin abruptly excavate at base of anal opening.

Biology

The specimens were collected on the top of Mount Walsh by sweeping 2–2.5 m high Grevillea whiteana Mc Gill. (Proteaceae) bushes, at about 700 m in altitude ( Fig. 10A–B ). These “Munduberra grevillea” appear to be a host plant of O. (Montorinda) montana sp. nov. ( Fig. 10B–C ).

Distribution

Australia, SE Queensland, Mount Walsh National Park ( Fig. 6 ).

Figures

Fig. 4. Orinda (Montorinda) spp., adeagus of holotypes. A–B. O. (Montorinda) eungellana sp. nov. A. Left lateral view. B. Posterior view. C–D. O. (Montorinda) montana sp. nov. C. Left lateral view. D. Posterior view.

Fig. 6. Orinda spp., distribution map.

Fig. 7. Orinda (Montorinda) montana sp. nov., Ô, holotype (QM). A. Habitus, dorsal view. B. Habitus, ventral view. C. Habitus, lateral view. D. Habitus, perpendicular view of frons. E. Habitus, anterolateral view. F. Posterior wing.

Fig. 8. Orinda (Montorinda) montana sp. nov., ♀, paratype (QM). A. Habitus, dorsal view. B. Habitus, ventral view. C. Habitus, lateral view. D. Posterior wing. E. Habitus, anterolateral view. F. Habitus, perpendicular view of frons. G. Left posterior leg, apical half of tibia and tarsus, ventral view.

Fig. 9. Orinda (Montorinda) montana sp. nov., Ô, holotype (QM), terminalia. A–D. Pygofer, anal tube and gonostyli. A. Left lateral view. B. Left posterolateral view. C. Posterior view. D. Dorsal view. E–L. Aedeagus. E. Left lateral view. F. Posterior view. G. Left laterodorsal view. H. Left lateroventral view. I. Dorsal view. J. Anterodorsal view. K. Aedeagus posteroventral view. L. Ventral view. Abbreviations: see Material and methods.

Fig. 10. Habitat and host plant of Orinda (Montorinda) montana sp. nov., Mount Walsh National Park, 14 Dec. 2019. A. Mount Walsh as seen from the car park. B. Landscape on the top of Mount Walsh with shrubs growing between the rocks. C. Host plant, Grevillea whiteana Mc Gill. (Proteaceae). D–E. Host plant, G. whiteana, detail.