Acanthocasuarina verticillatae Taylor, sp. nov.
Creators: name: Taylor, Gary S.
name: Jennings, John T.
name: Purcell, Matthew F.
name: Austin, Andy D.
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Triozidae
Acanthocasuarina
Acanthocasuarina verticillatae

description: Acanthocasuarina verticillatae Taylor, sp. nov.
Figs 119–126, 133–135, 139; Tables 1–8
Types. AUSTRALIA, South Australia: Holotype: 1 3 (slide) Kangaroo Island, West Bay Rd, 35º53.414'S 136º33.515'E, G.S. Taylor & J.T. Jennings, 9.ii.2008, swept from Allocasuarina verticillata, ABCL 2008 514 (SAMA). Paratypes: 11 3, 12 Ƥ, (slide) same data as holotype (ANIC, QMBA, SAMA, WINC).
Other material examined. AUSTRALIA, South Australia: from Allocasuarina verticillata: 1 Ƥ (dried) 10 km N Ardrossan (WINC); 3 3, 4 Ƥ 3.5 km E Callington (WINC); 1 3, 5 Ƥ (dried) Cooks Hill, 15 km E Mt Pleasant (WINC); 3 Ƥ (dried) Dawesley-Kanmantoo (WINC); 3 3, 3 Ƥ (dried) 4.2 km S Edithburgh (WINC); 2 Ƥ S Edithburgh (WINC); 1 Ƥ Hindmarsh Island (WINC); 2 3, 2 Ƥ KI, Baudin CP (WINC); 1 Ƥ KI, Harveys Return (WINC); 10 3, 14 Ƥ KI, Lathami CP (WINC); 3 3. 6 Ƥ KI, Muston Lookout (WINC); 7 3, 8 Ƥ KI, Vivonne Bay (WINC); KI, 1 km S Snellings Beach (WINC); 11 3, 8 Ƥ KI, E Stokes Bay (WINC); 2 3, 5 Ƥ KI, 1 km S Stokes Bay (WINC); 5 3, 1 Ƥ KI, 1 3 5 km W Vivonne Bay (WINC); 3 3, 3 Ƥ (dried), 4 nymphs (1 slide), 13 3, 10 Ƥ KI, West Bay Rd (WINC); 4 3, 10 Ƥ KI, Western R. (WINC); 1 Ƥ KI, Willoughby Rd (WINC); 2 3, 5 Ƥ Mt Barker- Murray Bridge (WINC); 4 3, 5 Ƥ (dried) 4 Ƥ Mt Barker, summit (WINC); 1 Ƥ, (dried) 15 km E Mt Pleasant (WINC); 2 Ƥ (dried), 1 Ƥ 3 km W Port Giles (WINC); 2 Ƥ 5 km WSW Port Giles (WINC); 1 Ƥ Spring Gully CP (WINC); 1 3, 3 Ƥ (dried) Urrbrae (WINC); 2 3, 2 Ƥ Wool Bay (WINC); 1 3 1 km W Wool Bay (WINC); 1 Ƥ 10 km N Victor Harbor (WINC); 1 Ƥ YP, Lake Fowler (WINC); 1 3, 4 Ƥ YP, Parsons Beach (WINC). Tasmania: from Allocasuarina verticillata: 1 3, 1 Ƥ (slide) Domain, Hobart (ANIC); from undet. Allocasuarina: 1 3, 1 nymph (slide) 2 km NW Seven Mile Beach (ANIC).
Description. Adult (Figs 119–125). Colour: Male: general colour pale cream to orange-brown with dark brown to black markings. Vertex pale with a pair of dark brown longitudinal submedial stripes in vicinity of fovea; genal processes dark brown to black; antennal segments 1–2 dark brown to black; segment 3 ochraceous, darker apically; segments 4–10 dark brown to black; pronotum pale with a pair of dark brown to black submedial stripes; mesopraescutum edged dark brown to black; mesoscutum with two pairs of brown longitudinal submedial stripes; mesoscutellum light orange-brown; wings clear; wing veins R+M+Cu with whitish colouration merging to pale grey-brown in vicinity of trifurcating veins, R, M and Cu, all wing veins conspicuously dark brown to black distally; abdominal tergites dark brown to black; proctiger and subgenital plate orange-brown; parameres dark brown to black distally; proximal segment of aedeagus brown, distal segment brown with pale cream coloured apex; legs with dorsal grey-brown infuscation; tarsi dark brown to black. Female: as for male, except proctiger with proximal and dorsal brown markings and pale in vicinity of circum-anal pore ring; subgenital plate with anterior brown markings; proctiger and subgenital plate with dark brown to black apices.
Structure: measurements and ratios as in Tables 1–5. Antennae short, 1.33–1.57 times width of head; genal processes moderate in length, conical, apices separated, divergent; anterior margin of vertex angled submedially from dorsal aspect, delineated from genal processes by prominent ridge; vertex with medial suture; pronotum with prominent anterior, medial node; thorax weakly arched, head distinctly wider than pronotum and mesoscutum, fore wings elongate with broadly rounded apex; Rs long, mostly straight except distally, terminating well short of wing apex; vein M1+2 terminating short of wing apex; cell m1 short, broadly triangular, m1 cell value 0.88–1.25; cell cu1 moderately long, triangular, cu1 cell value 0.74–1.00; radular areas thin, elongate in cells m1, m2 and cu1; male terminalia as in Figs 133–134; proctiger without lateral expansions; parameres short with bulbous basal lobe, narrowing to thin incurved apices. Female terminalia as in Fig. 135; proctiger short with dorso-posterior margin sharply angled from lateral aspect and a distinctly upturned apical hook; subgenital plate broad, triangular from lateral aspect.
Nymph (Fig. 126): Measurements and ratios as in Tables 6–7. Body light orange-brown with brown markings. Eyes reddish brown; head with anterior margin brown and submedial brown spots; thorax with submedial brown markings and lateral margins of wing pads with light brown infuscation; caudal plate with dark brown markings submedially and delineating margins of abdominal tergites, lateral margins with brown infuscation. Body elongateovate [head and body curved laterally (perpendicular to longitudinal axis of body) to fit cylindrical branchlets of host: consequently slide-mounted specimens are considerably ‘flattened’ and appear broader than when live]; anterior margin of head notched medially; dorsum of body without a distinct medial longitudinal ridge; meso-and metathorax without depressions; caudal plate with hind margin narrowly rounded.
Etymology. Named after the host plant, Allocasuarina verticillata.
Distribution. Recorded from Fleurieu Peninsula and Kangaroo Island in South Australia and from near Hobart in Tasmania (Fig. 139).
Host plant. Recorded from drooping sheoak, Allocasuarina verticillata (Lam.) Johnson. Allocasuarina verticillata occurs as a 4–10 m tree in grassy woodland to rocky sea-coasts and dry rocky hills and ridges inland, from central New South Wales, Victoria, northern and eastern Tasmania, and southern South Australia, including Yorke and Eyre Peninsulas and Kangaroo Island (Wilson & Johnson 1989).
Comments. See Comments under Ac. acutivalvis for diagnoses.
description: Published as part of Taylor, Gary S., Jennings, John T., Purcell, Matthew F. & Austin, Andy D., 2011, A new genus and ten new species of jumping plant lice (Hemiptera: Triozidae) from Allocasuarina (Casuarinaceae) in Australia, pp. 1-45 in Zootaxa 3009 on pages 39-44, DOI: 10.5281/zenodo.278552