Myotrioza gawlerensis 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 : 43-45

Myotrioza gawlerensis Taylor , sp. nov.

( Figs 63–70 , 83–84 , 89 ; Tables 1–8 )

Types. AUSTRALIA, South Australia: Holotype: 1 ♂ (slide) Gawler Range NP, 32º40.085'S, 135º29.835'E, G.S. Taylor, 15.xi.2012, swept Eremophila scoparia, 2012 113 (H27) (SAM). Paratypes: 1 ♂, 2 ♀ (slide) same data as holotype (SAM, WINC); 2 ♂ (dried) Moorunde Wildlife Reserve, 34º27.791’S, 139º27.118'E, G.S. Taylor & L. Krogmann, 8.xii.2013, swept Eremophila scoparia, 2013 150 SE116 (WINC).

Description. Adult ( Figs 63–66 ). Colouration. Male: [specimens in ethanol] Pale yellow-brown with pale orange-brown markings: vertex pale; eyes pale reddish grey; antennal segments 8–10 brown; pronotum pale; mesopraescutum with a pair of light orange brown submedial markings; mesoscutum with two pairs of light orange brown submedial markings; mesoscutellum pale; fore and hind wings clear; fore wing veins equally pigmented brown; legs very pale yellow-brown; abdominal tergites 1–5 light brown; sternites pale yellow-brown; proctiger, subgenital plate and parameres pale yellow brown, parameres tipped brown. Female: as for male except proctiger and subgenital plate pale yellow-brown with apex dark brown.

Structure. Measurements as in Tables 4–8 . Body short, compact ( Figs 63–66 ). Head ( Figs 67–68 ); vertex with weak medial suture, little sunk in vicinity of fovea; genal processes short, 0.32–0.44 times as long as vertex; antenna very short, 0.55 times width of head, with a single subapical rhinarium on each of segments 4, 6, 8 and 9; segment 10 with a bluntly rounded seta and a short bluntly rounded seta. Fore wing ( Figs 69–70 ) 3.57–3.97 times as long as head width, 2.41–2.58 times as long as wide, short, broad with rounded apex; vein Rs straight, slightly upturned distally, terminating short of wing apex, little shorter than vein M, RsM: 0.82–0.90; medial cell short, a little shorter than cubital cell; medial cell very short, and cubital cell elongate; veins M1+2 and M3+4 short, broadly diverging with corresponding low m1 cell value: 1.10–1.58; veins Cu1a short, arched and Cu1b short, each widely divergent with corresponding low cu1 cell value: 1.00–1.20; metatibia 0.60–0.65 times as long as width of head, longer than metafemur, without sclerotised apical spurs. Male terminalia ( Figs 83–84 ); proctiger distinctly triangular, narrow basally, with expanded lateral lobes bearing a sparse row of short equidistant setae on dorsoposterior margin; subgenital plate broadly rounded; parameres ( Fig. 84 ) very long, narrow, acicular, evenly tapering to incurved sclerotised apices; distal portion of aedeagus moderate in length, with asymmetrical apical expansion ( Fig. 83 ). Female terminalia ( Fig. 89 ): proctiger moderate in length, triangular, posterior margin with a weak subterminal lobe from lateral aspect and with sclerotised apex with slightly upturned hook; subgenital plate triangular with tapering sclerotised apex; distal portion of proctiger with sparse long pale setae and sparse field of pale weakly hooked setae and subgenital plate with sparse short setae.

Comments. Myotrioza gawlerensis sp. nov. can be distinguished by the following unique combination of characters: habitus as in Figs 63–66 , antenna with normal arrangement of rhinaria, fore wing broad with rounded apex, Rs little shorter than vein M ( Figs 69–70 ), female proctiger with sparse field of weakly hooked setae, flat profile with terminal upward inflection, valvula ventralis curved, ventral profile of female subgenital plate flat ( Fig. 89 ), male proctiger conoid with medial lobe, aedeagus thin, elongate, paramere triangular with sharply pointed apex ( Figs 83–84 ). For diagnosis from closely related species, see Comments for M. darwinensis sp. nov.

Etymology. Named after Gawler Ranges National Park, South Australia + ensis.

Host-plant association and distribution. ( Tables 2–3). Myotrioza gawlerensis sp. nov. is recorded from Eremophila scoparia from widely separated localities in the Gawler Ranges and near Blanchetown in the riverland mallee region of South Australia. It is one of 10 species of Myotrioza gen. nov. and 24 species of Triozidae recorded for South Australia. It is considered endemic to that state, although it is likely to occupy a broad distribution given that its host is widely distributed in southern Australia. It is one of 3 species of Myotrioza gen. nov., namely M. eremophili sp. nov., M. gawlerensis sp. n. and M. scopariae sp. nov. from M. scoparia . For distribution of M. scoparia , refer to M. eremophili sp. nov.

Figures

FIGURES 63 – 70. Myotrioza gawlerensis, sp. nov. (63), habitus, male, (dorsal aspect); (64), habitus, female (dorsal aspect); (65), habitus, male (lateral aspect); (66), habitus, female (lateral aspect); (67), head, male (dorsal aspect, from slide); (68), head, female (dorsal aspect); (69), fore wing, male (from slide); (70), fore wing, female. Scale = 1.0 mm.

FIGURES 79 – 86. Figs 79 – 80: Myotrioza eremophili, sp. nov. (79), male terminalia (lateral aspect); (80), paramere (inner face, lateral aspect); Figs 81 – 82: M. flindersiana, sp. nov. (81), male terminalia (lateral aspect); (82), paramere (inner face, lateral aspect); Figs 83 – 84: M. gawlerensis, sp. nov. (83), male terminalia (lateral aspect); (84), paramere (inner face, lateral aspect); Figs 85 – 86: M. insularis, sp. nov. (85), male terminalia (lateral aspect); (86), paramere (inner face, lateral aspect). Scale = 0.2 mm for male terminalia, 0.1 mm for parameres.

FIGURES 87 – 90. Female terminalia (87), Myotrioza eremophili, sp. nov.; (88), M. flindersiana, sp. nov.; (89), M. gawlerensis, sp. nov.; (90), M. insularis, sp. nov. Scale = 0.5 mm (all at same scale).