Myotrioza scopariae Taylor

Taylor, Gary S., Fagan-Jeffries, Erinn P. & Austin, Andy D., 2016, A new genus and twenty new species of Australian jumping plant-lice (Psylloidea: Triozidae) from Eremophila and Myoporum (Scrophulariaceae: Myoporeae), Zootaxa 4073 (1), pp. 1-84 : 72-73

Myotrioza scopariae Taylor , sp. nov.

( Figs 189–196 , 213–214 , 220 ; Tables 1–8 )

Types. AUSTRALIA, South Australia: Holotype: 1 ♂ (dried) Gawler Range NP, 32º40.085'S, 135º29.835'E, G.S. Taylor, 15.xi.2012, swept Eremophila scoparia, 2012 113 (H27) (SAM). Paratypes: 8 ♂, 10 ♀ (dried, points), 24 ♂, 25 ♀ (dried, in 2 gel. caps), 16 ♂, 18 ♀ (ethanol), same data as holotype (WAM, SAM, WINC). Western Australia: 6 ♂, 6 ♀ (dried, point), 16 ♂, 24 ♀ (dried, in 2 gel. caps) Credo Station Reserve, SW, 30º32.140'S, 120º45.890'E, G.S. Taylor, 31.viii.2011, swept Eremophila scoparia, 2011 126, CR7 (WAM, WINC); 40 ♂, 40 ♀ (dried, in 2 gel. caps)), 2 ♂, 3 ♀, 1 immature (ethanol) Credo Station Reserve, SW, 30º31.534'S, 120º44.796'E, G.S. Taylor, 31.viii.2011, swept Casuarina pauper, 2011 128, CR9 (WINC); 1 ♂ (ethanol), Credo Station Reserve, Coolgardie North Rd, 30º25.402'S, 120º48.242'E, G.S. Taylor, 3.ix.2011, Eremophila oppositifolia subsp. angustifolia 2011 148, CR29 (WINC); 7 ♂, 7 ♀ (dried, point), 6 ♂, 9 ♀ (dried, in 1 gel. cap.), Credo Station Reserve, - 30°13'18''S, 120°41'53''E GDA94, M. Cheng & C. Symonds, swept Eremophila scoparia , MC042; 14 ♂, 27 ♀, 1 immature (dried, in gel cap.), Credo Station, - 30°13' 18.00''S, 120°41' 53.00''E, 432m., 5 ix.2011, M. Cheng & C. Symonds, beat Eremophila scoparia , UNSW Host No. HA17; 3 ♂, 3 ♀ (dried), 3 ♀ (ethanol), 62 km NNW Norseman, 30º38.960'S, 121º38.398'E, G.S. Taylor, 7.xi.2011, swept, Eremophila scoparia, 2011 327, P66 (WAM, WINC).

Description. Adult ( Figs 189–192 ). Colouration. Male: [specimens in ethanol] Pale yellow brown: vertex with indistinct pale orange brown marking in vicinity of fovea; eyes greyish brown; antennal segments 8–10 progressively dark brown; mesopraescutum with a pair of pale orange brown anterior submedial markings; mesoscutum with a narrow medial and two pairs of pale orange brown submedial markings; fore wings with brown infuscation; hind wings clear; fore wing veins equally pigmented brown; legs pale yellow-brown; abdominal tergites 1–5 with greyish infuscation; abdominal membrane colouration pale green; proctiger, subgenital plate and parameres yellow-brown; basal portion of proctiger and apices of parameres black. Female: [specimens in ethanol] as for male except generally darker with more prominent markings; head and thorax with pale green suffusion; abdominal membrane colouration darker green; abdominal tergites and sternites with brown transverse bands, proctiger and subgenital plate pale yellow-brown with a brown to dark brown marking anteriolaterally and apices dark brown to black.

Structure. Measurements as in Tables 4–8 . Body short, compact ( Figs 189–192 ). Head ( Figs 193–194 ); vertex with weak medial suture, little sunk in vicinity of fovea; genal processes short, 0.24–0.32 times as long as vertex; antenna very short, 0.52–0.67 times width of head, with a single subapical rhinarium on each of segments 4, 6, 8 and 9; segment 10 with a very short bluntly rounded seta and a minute bluntly rounded seta. Fore wing ( Figs 195– 196 ) 3.35–3.85 times as long as head width, 2.45–3.00 times as long as wide, short, broad with rounded apex; vein Rs straight, slightly upturned distally, terminating well short of wing apex, little shorter than vein M, RsM: 0.73– 0.80; medial cell short, a little shorter than cubital cell; vein Rs short, straight, slightly upturned distally, terminating well short of wing apex; vein M longer than Rs; medial and cubital cells subequal; veins M1+2 and M3+4 short, broadly diverging with corresponding low m1 cell value: 1.32–1.59; veins Cu1a short, arched and Cu1b short, each widely divergent with corresponding low cu1 cell value: 0.73–0.97; metatibia 0.57–0.70 times as long as width of head, similar length to metafemur, without sclerotised apical spurs. Male terminalia ( Figs 213–214 ); proctiger distinctly triangular, narrow basally, with expanded lateral lobes bearing a prominent row of long equidistant setae on dorsoposterior margin; subgenital plate broadly rounded; parameres ( Fig. 214 ) very long, narrow, acicular, evenly tapering to incurved sclerotised apices; distal portion of aedeagus long, with asymmetrical apical expansion ( Fig. 213 ). Female terminalia ( Fig. 220 ): proctiger long, elongate triangular, posterior margin with a subterminal lobe from lateral aspect and with sclerotised apex; subgenital plate elongate triangular with tapering sclerotised apex; distal portion of proctiger with a few long pale setae and subgenital plate with sparse short setae.

Comments. Myotrioza scopariae sp. nov. can be distinguished by the following unique combination of characters: habitus as in Figs 189–192 , antenna with normal arrangement of rhinaria, fore wing broad with rounded apex, Rs little shorter than vein M ( Figs 195–196 ), female proctiger with sparse setae, dorsoposterior margin with weak subapical lobe and terminal pointed inflection, valvula ventralis elongate, curved, subgenital plate pointed, ventral profile of female subgenital plate curved ( Fig. 220 ), male proctiger triangular with long setae along dorsoposterior margin, aedeagus elongate, paramere elongate, pointed without anterior subapical lobe ( Figs 213– 214 ). For diagnosis from closely related species, see Comments for M. interstantis sp. nov.

Etymology. Named after Eremophila scoparia , the host species.

Host-plant association and distribution. ( Tables 2–3). Myotrioza scopariae sp. nov. is recorded from Eremophila scoparia at Credo Station near Coolgardie and near Norseman, Western Australia, and in the Gawler Ranges in South Australia. As these are widely separated localities it is likely to occupy the vast majority of its hosts range in eremean southern Australia. It is likely to occupy a broad distribution given that it occurs on multiple hosts that are widely distributed in southern Australia. It is one of 11 species of Myotrioza gen. nov. and 17 species of Triozidae recorded for Western Australia and one of 10 species of Myotrioza gen. nov. and 24 species of Triozidae recorded for South Australia. It is one of 4 species of Myotrioza , namely M. darwinensis sp. nov., M. eremophili sp. n, M. oppositifoliae sp. nov. and M. scopariae sp. nov. from E. oppositifolia ; and one of 3, namely M. eremophili sp. nov., M. gawlerensis sp. nov. and M. scopariae sp. nov. from E. scoparia . For distribution of M. oppositifolia , refer to M. darwinensis sp. nov. and for E. scoparia refer to M. eremophili sp. nov. Its record from Casuarina pauper is considered doubtful, being more likely to be collected from nearby plants.

Figures

FIGURES 189 – 196. Myotrioza scopariae, sp. nov. (189), habitus, male, (dorsal aspect); (190), habitus, female (dorsal aspect); (191), habitus, male (lateral aspect); (192), habitus, female (lateral aspect); (193), head, male (dorsal aspect, from slide); (194), head, female (dorsal aspect); (195), fore wing, male (from slide); (196), fore wing, female. Scale = 1.0 mm.

FIGURES 213 – 218. Figs 213 – 214: Myotrioza scopariae, sp. nov. (213), male terminalia (lateral aspect); (214), paramere (inner face, lateral aspect); Figs 215 – 216: M. serrulatae, sp. nov. (215), male terminalia (lateral aspect); (216), paramere (inner face, lateral aspect); Figs 217 – 218: M. telowiensis, sp. nov. (217), male terminalia (lateral aspect); (218), paramere (inner face, lateral aspect). Scale = 0.2 mm for male terminalia, 0.1 mm for parameres.

FIGURES 219 – 222. Female terminalia (219), Myotrioza remota, sp. nov.; (220), M. scopariae, sp. nov.; (221), M. serrulatae, sp. nov.; (222), M. telowiensis, sp. nov. Scale = 0.5 mm (all at same scale).