Erysivena mareeba, 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 : 182-186

Erysivena mareeba , new species

Figures 6B, 14 , 63–65 ; map 5

DIAGNOSIS: Defined by the following characters: midsized; head weakly expanded anteriorly; eyes large; labium extending to mesocoxae; 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 linear, elongate, separate but arising from broad tergal lobe; left tergal process subrectangular, apex slightly pointed and curved downward; left paramere strongly expanded, subtriangular, prominent sensory lobe with swollen appearance, with dark bristlelike setae, apophysis moderately elongate, apex hooked; right paramere hammer shaped, with small subapical dorsal lobe, apex elongate, narrow edge; phallotheca opening small and subovate; aedeagus with PES simple, with small threadlike medial process, distally acuminate and ribbonlike, apex smooth or with single row of marginal serration; DES2 bifurcate medially; DES1 simple, unbranched, curved distally, serrate continuously from medial to distal margins; female mIRL half height of laIRL, round and serrate distally; laIRL straight and slightly narrowing distally with small spiniferous basal lobe.

DESCRIPTION: Male: Midsize, elongate ovoid, body length 3.44–3.66 mm, pronotal width 1.00– 1.06 mm. COLORATION: Dorsum yellowish green, faded; cuneus tip dark red; forewing membrane mostly uniform dark gray-brown with slightly darker patches laterally, membrane veins red with color confined to veins, subcuneal clear spot not enlarged. VESTITURE: Dorsum with moderately dense distribution of pale (cream) simple setae. STRUCTURE: Head: Weakly expanded anteriorly, eyes large, extending well beyond anterolateral angle of pronotum (figs. 63A–D); antennae with AI 1.3× vertex width, AII 1.2× pronotal width; labium medium length, extending to mesocoxae. Hemelytra: Cuneus and major cell of membrane short, major membrane vein straight; forewing membrane slightly truncated (fig. 14). GENITALIA: Pygophore: Dorsal margin of genital opening strongly concave, asymmetrically, two sclerotized tergal processes positioned left and far right of midline (figs. 63H, 65A); left tergal process subrectangular, broad, narrows distally with apex curved downward, dis- tally serrate (figs. 64A, 65A); right tergal process elongate, narrow, distally serrate, without an expanded base, but arising from broad tergal lobe (figs. 63H, 65A); ventral margin of genital opening slightly convex on left side (fig. 64B); phalloguide round, sclerotized, and with small, round lobe ventrad to right paramere articulation (fig. 65A). Left paramere: Strongly expanded medially, subtriangular; sensory lobe prominent, expanded, margins slightly indented, so lobe appears swol- len; sensory lobe with dark brown, bristlelike setae; apophysis moderately elongate, inner margin with serrations subapically; apex hooked (figs. 64A, B, 65B). Right paramere: Hammer shaped; medial flange on inner lateral margin, absent; subapical dorsal margin expanded with small lobe; apex expanded, weakly curved, with narrow distal edge; very small toothlike spines present on subapical lobe and along narrow edge of apex; lightbrown, short, bristlelike setae on apex (figs. 64B, 65C). Phallotheca: Dorsal opening small, subovate; closed medially; round distally; without small point at apex; basal margin of opening V-shaped; small subapical tumescence on ventral surface (fig. 65D). Aedeagus: Spicule arrangement (fig. 65): PES ventral to left dorsolateral to and wrapped sheathlike around secondary gonopore (fig. 64C, D), DES2 left lateral to PES (fig. 64D), DES1 left dorsolateral to DES2 (fig. 64C, D), base of PES slightly distad to base of secondary gonopore; PES simple with moderately short, very fine medial threadlike process (fig. 64C) (not illustrated), medially serrate on right margin, apex acuminate and ribbonlike, sometimes curved and either smooth (fig. 65E) or with few marginal serrations (fig. 64C–E); DES2 bifurcate medially, branches equal length and narrow, distal margins serrate, left branch curved downward toward base or perpendicular, right branch not bent, without submedial or subbasal serrations (figs. 64D, E, 65E); DES1 simple, medially weakly expanded, distally weakly curved, serrate continuously from medial to distal margins, basal keel (DESk) moderately elongate (figs. 64C, E, 65E).

Female: Slightly shorter on average than male, body length 3.23–3.52 mm, pronotal width 0.96–1.06 mm. GENITALIA: IRS posterior margin convex. Interramal lobes (fig.74): mIRL entirely separated from laIRL; laIRL straight, linear, narrowing slightly at apex, base spiniferous with small spiniferous lobe; mIRL half height of laIRL, subrectangular, distally round and serrate.

ETYMOLOGY: Named after Mareeba, near the type locality, on the Atherton Tablelands in northeastern Queensland. Noun in apposition.

HOST PLANT: Known from Callitris intratropica (table 2).

HOLOTYPE: AUSTRALIA: Queensland: 10 km E of Mareeba , jct of Kennedy Hwy & Kay Rd, 17.99041 ° S 145.5075 ° E, 450 m, 31 May 2006, Cassis, Barrow, Finlay, and Symonds, Callitris intratropica , det. RBG Sydney, 1♂ ( AMNH _ PBI 00005634 ) ( QM).

PARATYPES: AUSTRALIA: Queensland: 10 km E of Mareeba, jct of Kennedy Hwy & Kay Rd, 17.99041 ° S 145.5075 ° E, 450 m, 31 May 2006, Cassis, Barrow, Finlay, and Symonds, Callitris intratropica , det. RBG Sydney, 2♂ ( AMNH _PBI 00005630, 00005631), 25♀ ( AMNH _PBI 00005635–00005653, 00005657–00005662) ( AM), 2♂ ( AMNH _PBI 00005632, 00005633), 3♀ ( AMNH _PBI 00005654–00005656) ( QM). 17 km E of Mt. Garnet, on Kennedy Hwy, 17.659 ° S 145.24669 ° E, 678 m, 21 May 2006, Cassis, Barrow, Finlay, and Symonds, Callitris intratropica , det. RBG Sydney, 7♂ ( AMNH _PBI 00005555–00005561), 6♀ ( AMNH _PBI 00005566–00005569, 00005572, 00005573) ( AM), 4♂ ( AMNH _PBI 00005562–00005565), 2♀ ( AMNH _PBI 00005570, 00005571) ( QM). 26.1 km W of Mt. Garnet, 17.83677 ° S 144.94902 ° E, 673 m, 22 May 2006, Cassis, Barrow, Finlay, and Symonds, Callitris intratropica , det. RBG Sydney, 3♂ ( AMNH _PBI 00005530, 00005543, 00005596), 14♀ ( AMNH _PBI 00005531–00005542, 00005599, 00005600) ( AM), 1♂ ( AMNH _PBI 00005597), 1♀ ( AMNH _PBI 00005601) ( AMNH), 1♂ ( AMNH _PBI 00005598) ( QM). 58 km W of Mt. Garnet, Forty Mile Scrub National Park, 18.08155 ° S 144.85902 ° E, 758 m, 23 May 2006, Cassis, Barrow, Finlay, and Symonds, Callitris intratropica , det. RBG Sydney, 1♂ ( AMNH _PBI 00005664), 3♀ ( AMNH _PBI 00005667– 00005669) ( AM), 1♂ ( AMNH _PBI 00005666) ( QM), 1♂ ( AMNH _PBI 00005665), 1♀ ( AMNH _PBI 00005670) ( UNSW). Jct of Baillie Rd & Kennedy Hwy, 25 km E of Mt. Garnet, 17.65236 ° S 145.31588 ° E, 681 m, 21 May 2006, Cassis, Barrow, Finlay, and Symonds, Callitris intratropica , det. C. Symonds, 8♂ ( AMNH _PBI 00005607–00005613, 00005615), 10♀ ( AMNH _ PBI 00005617–00005626) ( AM), 2♂ ( AMNH _ PBI 00005614, 00005616), 3♀ ( AMNH _PBI 00005627–00005629) ( QM). Kennedy Hwy, 8 km E of Mareeba, 16.98458 ° S 145.4975 ° E, 454 m, 20 Apr 2005, C. Symonds, Callitris intratropica , det. Field ID, 1♂ ( AMNH _PBI 00005675) ( AM). Kennedy Hwy at Kay Rd, 10 km E of Mareeba, 16.98893 ° S 145.5084 ° E, 446 m, 18 Apr 2005, C. Symonds, Callitris intratropica , det. Field ID, 2♂ ( AMNH _PBI 00005672, 00005673), 1♀ ( AMNH _PBI 00005674) ( AM). ca. 11.3 km W of Herberton, on Herberton-Petford Rd, 17.38413 ° S 145.27125 ° E, 792 m, 01 Jun 2006, Cassis, Barrow, Finlay, and Symonds, Callitris intratropica , det. RBG Sydney, 2♂ ( AMNH _PBI 00005577, 00005583), 12♀ ( AMNH _PBI 00005578– 00005580, 00005584–00005592) ( AM), 2♀ ( AMNH _PBI 00005581, 00005582) ( QM).

OTHER SPECIMENS EXAMINED: AUSTRA- LIA: Queensland: 17 km E of Mt. Garnet, on Kennedy Hwy, 17.659 ° S 145.24669 ° E, 678 m, 21 May 2006, Cassis, Barrow, Finlay, and Symonds, Callitris intratropica , det. RBG Sydney, 9 juv. (AMNH_PBI 00005544–00005547, AMNH_PBI 00005550–00005554) (AM), 2 juv. (AMNH_PBI 00005548, 00005549) (QM). 19.5 km N of Mareeba, 16.81938 ° S 145.36766 ° E, 406 m, 24 May 2006, Cassis, Barrow, Finlay, and Symonds, Callitris intratropica , det. RBG Sydney, 1♂ (UNSW_ENT 00046038) (AM). 26.1 km W of Mt. Garnet, 17.83677 ° S 144.94902 ° E, 673 m, 22 May 2006, Cassis, Barrow, Finlay, and Symonds, Callitris intratropica , det. RBG Sydney, 3 juv. (AMNH_PBI 00005593–00005595) (AM). 58 km W of Mt. Garnet, Forty Mile Scrub National Park, 18.08155 ° S 144.85902 ° E, 758 m, 23 May 2006, Cassis, Barrow, Finlay, and Symonds, Callitris intratropica , det. RBG Sydney, 1 juv. (AMNH_ PBI 00005663) (AM). Jct of Baillie Rd & Kennedy Hwy, 25 km E of Mt. Garnet, 17.65236 ° S 145.31588 ° E, 681 m, 21 May 2006, Cassis, Barrow, Finlay, and Symonds, Callitris intratropica , det. C. Symonds, 3 juv. (AMNH_PBI 00005602–00005604) (AM), 2 juv. (AMNH_ PBI 00005605, 00005606) (QM). Kennedy Hwy at Kay Rd, 10 km E of Mareeba, 16.98893 ° S 145.5084 ° E, 446 m, 18 Apr 2005, C. Symonds, Callitris intratropica , det. Field ID, 1 juv. (AMNH_PBI 00005671) (AM). ca. 11.3 km W of Herberton, on Herberton-Petford Rd, 17.38413 ° S 145.27125 ° E, 792 m, 01 Jun 2006, Cassis, Barrow, Finlay, and Symonds, Callitris intratropica , det. RBG Sydney, 3 juv. (AMNH_ PBI 00005574–00005576) (AM).

DISTRIBUTION: Known from nine closely located sites near Mareeba, in savannah woodland (map 5). Collected at two sites with C. finlayae (table 2). It was also collected close to E. molloy (map 5).

REMARKS: Erysivena mareeba is closely related to E. majori , E. bundjalung and E. molloy . It is readily differentiated from E. majori and E. bundjalung by the following characters (cf. figs. 65, 62, 50): the right paramere is narrower apically and the subapical dorsal lobe is very small (cf. the right paramere is flattened and apically broad, and the subapical dorsal lobe is larger in the other two species); the left paramere has dark rather than light-brown, bristlelike setae on the sensory lobe; the left tergal process of the genital opening of the pygophore is slightly larger, and the right tergal process is very narrow and more elongate with a less expanded base; a far right tergal lobe is present (not fused to the tergal process as in the other two species); PES is medially serrate, and has a very short, threadlike medial process (similar in E. bundjalung ), is very narrow and ribbonlike distally, having a smooth apex or weakly serrate margin and is shorter than the other two endosomal spicules. It is noteworthy that PES varies subtly within all three species. See also remarks below for E. molloy .

Figures

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

FIG. 63. External morphology of Erysivena mareeba, male. A. Head, dorsal, scale bar = 30 µm. B. Head, lateral, scale bar = 30 µm. C. Head and pronotum, dorsal, scale bar = 100 µm. D. Head and pronotum, lateral, scale bar = 30 µm. E. Meso- and metathorax, scale bar = 30 µm. F. Metathoracic scent gland, scale bar = 10 µm. G. Tarsal claw, scale bar = 10 µm. H. Pygophore, dorsal, scale bar = 30 µm.

FIG. 64. Male genitalic morphology of Erysivena mareeba: A. Pygophore, left lateral. B. Pygophore, ventral C. Aedeagus, left lateral. D. Aedeagus, ventral. E. Aedeagus, dorsal. Scale bars = 30 µm.

FIG. 65. Male genitalia of Erysivena mareeba. A. Pygophore, dorsal. B. Left paramere, ventral. C. Right paramere, right lateral. D. Phallotheca, right lateral. E. Aedeagus, right lateral. Scale bars = 0.1 mm.