Erysivena bundjalung, Symonds & Cassis, 2018

Symonds, Celia L. & Cassis, Gerasimos, 2018, Systematics And Analysis Of The Radiation Of Orthotylini Plant Bugs Associated With Callitroid Conifers In Australia: Description Of Five New Genera And 32 New Species (Heteroptera: Miridae: Orthotylinae), Bulletin of the American Museum of Natural History 2018 (422), pp. 1-229 : 155-160

Erysivena bundjalung , new species

Figures 5C–D, 14 , 50 ; 74 ; map 4

DIAGNOSIS: Defined by the following characters: small size; head weakly expanded anteri-

orly, eyes large; labium extending to mesocoxae; cuneus short; tip of cuneus and forewing membrane veins red; pygophore with two serrate tergal processes positioned left lateral and far right lateral; far right lateral tergal process short with expanded basal lobe; left lateral tergal process subrectangular, apex squared but not curved downward; left paramere strongly expanded, subtriangular, sensory lobe prominent and swollen with short, light-brown setae, apophysis moderately elongate, apex hooked; right paramere “hammer” shaped, with expanded subapical dorsal lobe, apex elongate, broad and flattened; phallotheca opening small and lanceolate, with small point at apex; PES simple, unbranched with small threadlike medial process, distally serrate with bent apex; DES2 bifurcate in distal third; DES1 unbranched, curved downward distally, medially and distally serrate; female mIRL just over half height of laIRL, round and serrate distally; laIRL straight and uniform width, with large serrate basal lobe.

DESCRIPTION: Male: Small size, subovate, body length 2.84–3.08 mm, pronotal width 0.88–0.91 mm. COLORATION: Dorsum yel- lowish green, faded; cuneus tip red; forewing membrane light gray-brown with darker patches laterally and in major cell, veins red with color confined to veins, subcuneal clear spot large (fig. 14). VESTITURE: Dorsum with moderately dense distribution of pale light-brown simple setae. STRUCTURE: Head: Weakly expanded anteriorly; eyes large, extending well beyond anterolateral angle of pronotum; clypeus round in dorsal view; antennae with AI subequal to vertex width, AII 1.2× pronotal width; labium medium length, extending to mesocoxae. Hemelytra: Cuneus and wing membrane short, major cell of membrane short, major membrane vein straight, parallel to inner cuneal margin (fig. 14). GENITALIA: Pygo- phore: Dorsal margin of genital opening strongly concave, asymmetrically; two sclerotized tergal processes, positioned left and far right lateral of midline; left tergal process subrectangular, uniform width, apex squared and not curved downward, distally serrate; far right tergal process linear, with expanded lobed base, distally serrate; ventral margin of genital opening slightly convex medially; phalloguide sclerotized and round ventrad to right paramere articulation, serrations on lateral margin (fig. 50A). Left paramere: Strongly expanded medially, subtriangular; sensory lobe prominent, expanded, swollen with margins slightly indented; sensory lobe with light-brown, bristlelike setae; apophysis moderately elongate, inner margin smooth; apex hooked (fig. 50B). Right paramere: Hammer shaped; medial flange on inner lateral margin, reduced, directed ventrally; subapical dorsal margin with expanded lobe; apex expanded, strongly curved, with flattened distal edge; toothlike spines present on subapical lobe and in two rows on inner and outer margin along apex; light-brown, short, bristlelike setae on apex (fig. 50C). Phallotheca: Dorsal opening small and lanceolate; closed medially; round distally, with small point off center at apex; basal margin of opening V-shaped; small subapical tumescence on ventral surface (fig. 50D). Aedeagus: Spicule arrangement (fig. 50): PES ventral to and partially sheathing secondary gonopore, DES2 left dorsolateral to secondary gonopore, DES1 left lateral to DES2; base of spicules originating adjacent secondary gonopore; PES simple with short medial threadlike process projected perpendicular to spicule, apex serrate, diamond shaped and strongly bent; DES2 bifurcate in distal third, branches equal length and narrow, distal margins serrate, left branch curved downward toward base, right branch straight, with row of toothlike serrations submedially just below bifurcation point; DES1 simple, medially expanded and serrate along inner margin, distally curved downward and acuminate, distal margins serrate, basal keel (DESk) elongate (fig. 50E, F).

Female: Slightly larger than male, body length 3.08–3.36 mm, pronotal width 0.89–1.02 mm.

GENITALIA: IRS posterior margin convex. Interramal lobes (fig. 74): mIRL entirely separated from laIRL; laIRL straight, linear, uniform width, base with large spiniferous lobe; mIRL just over half height of laIRL, subrectangular, uniformly broad, distally round and serrate.

ETYMOLOGY: Named after the type locality, Bundjalung National Park, on the northeast coast of New South Wales, and in honor of the traditional custodians of that land, the Bundjalung people.

HOST PLANT: From Callitris columellaris (table 2). This host plant (sensu Hill, 1998) is restricted to coastal sands around northeastern New South Wales and southeastern Queensland.

HOLOTYPE: AUSTRALIA: New South Wales: Bundjalung National Park, 10 km from Pacific Hwy on road to Black Rocks , 29.17617 ° S 153.39075 ° E, 7 m, 18 Jan 2005, C. Symonds, N. Tatarnic, Callitris columellaris , det. Field ID, 1♂ ( AMNH _ PBI 00005447 ) ( AM).

PARATYPES: AUSTRALIA: New South Wales: Bundjalung National Park, 10 km from Pacific Hwy on road to Black Rocks, 29.17617 ° S 153.39075 ° E, 7 m, 18 Jan 2005, C. Symonds, N. Tatarnic, Callitris columellaris , det. Field ID, 3♂ ( AMNH _PBI 00005445, 00005446, 00005448), 2♀ ( AMNH _PBI 00005449, 00005450) ( AM). Pacific Hwy, 3 km NE of Maclean, 29.45068 ° S 153.2206 ° E, 18 Jan 2005, C. Symonds, N. Tatarnic, Callitris columellaris , det. Field ID, 1♂ ( AMNH _PBI 00005457), 4♀ ( AMNH _PBI 00005458–00005461) ( AM). Wardell, 16 km S of Ballina on Pacific Hwy, 28.95005 ° S 153.4658 ° E, 7 m, 18 Jan 2005, C. Symonds, N. Tatarnic, Callitris columellaris , det. Field ID, 7♂ ( AMNH _PBI 00005462–00005466, 00005468, 00005469), 5♀ ( AMNH _PBI 00005470– 00005474) ( AM), 1♂ ( AMNH _PBI 00005467), 1♀ ( AMNH _PBI 00005475) ( UNSW).

OTHER SPECIMENS EXAMINED: AUSTRA- LIA: New South Wales: Bundjalung National Park, 10 km from Pacific Hwy on road to Black Rocks, 29.17617 ° S 153.39075 ° E, 7 m, 18 Jan 2005, C. Symonds, N. Tatarnic, Callitris columellaris , det. Field ID, 5 juv. (AMNH_PBI 00005440–00005444) (AM). Pacific Hwy, 3 km NE of Maclean, 29.45068 ° S 153.2206 ° E, 18 Jan 2005, C. Symonds, N. Tatarnic, Callitris columellaris , det. Field ID, 6 juv. (AMNH_PBI 00005451–00005456) (AM).

DISTRIBUTION: Known from three closely associated localities in coastal northeastern New South Wales, from Maclean to just south of Ballina (map 4). This species occurs sympatrically with E. ballina , at two of these sites (table 2).

REMARKS: Erysivena bundjalung is most closely related to E. majori , E. mareeba , and E. molloy . This species is differentiated from E. majori and E. mareeba by the morphology of the endosomal spicules, with the apex of PES bent and marginally serrate, and DES2 distally bifurcate (fig. 50E, F). Erysivena bundjalung , E. mareeba , and E. molloy are similar in size and shape, and all three species are smaller and more subovate than E. majori (fig. 14).

Figures

FIG. 14. Erysivena species, dorsal habitus photographs of males. Scale bar = 1 mm.

FIG. 50. Male genitalia of Erysivena bundjalung. A. Pygophore, dorsal. B. Left paramere, ventral. C. Right paramere, left lateral. D. Phallotheca, dorsal. E. Aedeagus, right lateral. F. Aedeagus, ventral. Scale bars = 0.1 mm.

FIG. 74. Erysivena female genitalia: right interramal lobes of species, posterior wall of E. schuhi, dorsal. Scale bar = 0.1 mm.