Erysivena kalbarri, 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 : 174-178

Erysivena kalbarri , new species

Figures 11 , 14 , 57–61 ; map 4

DIAGNOSIS: Defined by the following characters: moderately small size; head strongly expanded anteriorly; eyes midsize; labium extending to metacoxae; forewing membrane veins red, cuneal tip rarely with hint of red; pygophore with two tergal processes positioned right and left of midline, linear shape, distally serrate; left paramere moderately expanded, with broad, round sensory lobe, apophysis elongate, apex unhooked; right paramere C-shaped, with expanded triangular medial flange, distally strongly curved and serrate; phallotheca not compressed at apex; aedeagus with PES complex, DES1 simple; PES strongly constricted above base, with elongate basal straplike process; DES2 unbranched, with medial threadlike process; DES1 unbranched with smooth margins; female laIRL curved inward and broader distally, without basal lobe; mIRL half height of laIRL, subrectangular.

DESCRIPTION: Male: Moderately small size, elongate ovoid, body length 2.97–3.31 mm, pronotal width 0.94–0.98 mm. COLORATION: Dorsum yellowish green, faded; cuneus tip concolorous with rest or with very slight tip of red; forewing membrane light gray-brown with darker patches laterally and in major cell, membrane veins red with color confined to veins (fig. 14). VESTITURE: Dorsum with moderately dense distribution of light-brown simple setae. STRUCTURE: Head: Strongly expanded anteriorly (fig. 57A, B); eyes midsize, extending slightly beyond anterolateral angle of pronotum (fig. 57A– C); antennae with AI 0.9× vertex width, AII 1.3× pronotal width; labium medium length, extending to metacoxae. Hemelytra: Cuneus and major cell of membrane short, major membrane vein rounded (fig. 14). GENITALIA: Pygophore: Dorsal margin of genital opening strongly concave, with two tergal processes, bases expanded, positioned left and right of midline, elongate, left process longer than right process, both distally serrate (figs. 57H, 59A); far right lateral tergal lobe absent; ventral margin of genital opening slightly convex (fig. 58B); round phalloguide present, positioned just inside ventral margin and protruding slightly, phalloguide not sclerotized ventrad to right paramere articulation (fig. 59A). Left paramere: Moderately expanded medially; sensory lobe broad, round; apophysis greatly elongate, inner margin smooth; apex curved inward slightly, not hooked (figs. 57H, 58A, B, 59B). Right paramere: C-shaped; medial flange on dorsal margin expanded, subtriangular, directed inward; apex strongly curved; medial flange with smooth margin, slightly rough proximate to point but not serrate; apex serrate with two rows of small spines (figs. 57H, 58B, 59C). Phallotheca: Dorsal opening large; round distally; ventral surface not compressed at apex; RHS dorsal margin without lobe, capped with proctiger in situ (figs. 58A, 59D). Aedeagus: Spicule arrangement (fig. 59): PES left ventrolateral and almost entirely wrapped sheathlike around secondary gonopore (figs. 58C–E), DES2 dorsal to secondary gonopore and PES (fig. 58E), DES1 left dorsolateral to DES2 (figs. 58E), PES and DES2 joined by membrane sheath on right side of secondary gonopore (figs. 58E, 59E), base of all spicules originating proximal to base of secondary gonopore (fig. 58C); PES complex, acutely constricted above base, subbasal straplike process present, moderately elongate, small basal process on base before constriction point, shorter than subbasal process (figs. 58C, 59E); DES2 unbranched, not twisted distally or expanded medially, medial threadlike process present (figs. 58C, E, 59E); DES1 simple, unbranched, margins smooth, medially expanded, acuminate distally (figs. 58C, E, 59E), basal keel (DESk) elongate (fig. 59E).

Female: Slightly longer than male on average, body length 3.15–3.52 mm, pronotal width 0.91– 1.05 mm. GENITALIA: IRS, posterior margin concave (figs. 60D, 61C). Interramal lobes (figs. 60D, 61C): mIRL entirely separated from laIRL; laIRL curved inward and slightly broader distally, base spiniferous but without lobe; mIRL half height of laIRL, subrectangular, distally round and serrate.

ETYMOLOGY: Named after the type locality and only known locality for this species in Kalbarri National Park, Western Australia, an area with a high level of biological diversity and endemism.

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

HOLOTYPE: AUSTRALIA: Western Australia: Kalbarri National Park , 12.6 km E Kalbarri, 27.69313 ° S 114.291 ° E, 500 m, 29 Oct 1996, Schuh and Cassis, Actinostrobus arenarius , det. WA Herbarium PERTH 05120411, 1♂ ( AMNH _ PBI 00016472 ) ( WAMP).

PARATYPES: AUSTRALIA: Western Australia: Kalbarri National Park, 12.6 km E Kalbarri, 27.69313 ° S 114.291 ° E, 500 m, 29 Oct 1996, Schuh and Cassis, Actinostrobus arenarius , det. WA Herbarium PERTH 05120411, 18♂ ( AMNH _PBI 00016465, 00016473–00016478, 00016480–00016490), 24♀ ( AMNH _PBI 00016491, 00016492, 00016499–00016505, 00016507–00016521) ( AM), 1♂ ( AMNH _PBI 00016479), 1♀ ( AMNH _PBI 00016506) ( UNSW), 6♂ ( AMNH _PBI 00016466– 00016471), 6♀ ( AMNH _PBI 00016493– 00016498) ( WAMP).

OTHER SPECIMENS EXAMINED: AUSTRA- LIA: Western Australia: Kalbarri National Park, 12.6 km E Kalbarri, 27.69313 ° S 114.291 ° E, 500 m, 29 Oct 1996, Schuh and Cassis, Actinostrobus arenarius , det. WA Herbarium PERTH 05120411, 10 juv. (AMNH_PBI 00016450–00016459) (AM), 5 juv. (AMNH_PBI 00016460–00016464) (WAMP).

DISTRIBUTION: Known from one locality in Kalbarri National Park, Western Australia, an area with high endemism in the northern end of the Southwest Botanical Zone (map 4).

REMARKS: Erysivena kalbarri is most closely related to two Western Australian species, E. drepanomorpha and E. notodytika by the unique structure of PES (cf. figs. 59E, 53G, 67E). It is best differentiated from the other two species by the smaller body size; more strongly expanded head anteriorly; slightly smaller eyes (figs. 14, 57A–D); presence of two linear tergal processes on the dorsal margin of the genital opening of the pygophore (fig. 57H) (cf. one large, broad tergal process); the expanded and triangular medial flange on the inner dorsal margin of the right paramere (fig. 59C) (cf. weakly expanded dorsal edge of the other two species); and the unbranched and distally smooth DES1 (fig. 58E) (cf. complex DES1 of the other two species). It is noteworthy that the head in E. kalbarri is more strongly expanded anteriorly than any other species in the genus.

Figures

FIG. 11. Callitroid Orthotylini + Naranjakotta sidnica. Generic overview of aedeagus and arrangement of endosomal spicules. Scale bars = 0.1 mm.

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

FIG. 57. Scanning electron micrograph images of Erysivena kalbarri, 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. 58. Male genitalic morphology of Erysivena kalbarri. A. Pygophore, left lateral. B. Pygophore, ventral. C. Aedeagus, left lateral. D. Aedeagus, ventral. E. Aedeagus, right lateral. Arrow indicates membrane join between PES and DES2 endosomal spicules. Scale bars = 30 µm.

FIG. 59. Male genitalia of Erysivena kalbarri. A. Pygophore, dorsal. B. Left paramere, dorsal. C. Right paramere, dorsal. D. Phallotheca, dorsal. E. Aedeagus, right lateral. Scale bars = 0.1 mm.

FIG. 60. Scanning electron micrograph images of female genitalic structures of Erysivena kalbarri. A. Asymmetrical sclerotized vestibulum, ventral. B. Genital chamber, posterior. C. Sclerotized, densely spinose ventral labiate plate with lateral lobes, dorsal. D. Posterior wall, dorsal. Scale bars = 30 µm.

FIG. 61. Female genitalia of Erysivena kalbarri. A. Ventral labiate plate, dorsal. B. Bursa copulatrix, ventral. C. Posterior wall, dorsal. Scale bar = 0.1 mm.