Myotrioza interioris 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 : 49-51

Myotrioza interioris Taylor , sp. nov.

( Figs 91–98 , 125–126 , 133 ; Tables 1–8 )

Types. AUSTRALIA, Western Australia: Holotype: 1 ♂ (slide), Charles Darwin Reserve, N of Wanarra Rd to Samphire Camp, - 29.55080°S, 116.96463°E, 254 m, 24 Sep 2009, C. Symonds, Eremophila pantonii , WA0909 L46 H100 (WAM). Paratypes: 1 ♀ (slide) same data as holotype (WAM); 1 ♂,1 ♀ (slide) Credo Station Reserve, W, 30º12.355'S, 120º42.360'E, G.S. Taylor, 5.ix.2011, swept Eremophila sp., 2011 172, CR53 (WINC); 2 ♂ (dried) Credo Bush Blitz, 30º12'S, 120º42'E, M. Cheng, 5.ix.2011, swept Eremophila (WAM); 1 ♂ (dried) Credo Station Reserve, - 30º13'18''S, 120º41'5''E, M. Cheng & C. Symonds, swept Eremophila MC042 (WAM).

Description. Adult ( Figs 91–94 ). Colouration. Male: [specimen in ethanol] Dark brown to black: vertex dark brown; eyes red; antennal segments 8–10 progressively dark brown to black; pronotum, mesopraescutum and mesoscutum dark brown to black; fore and hind wings clear; fore wing veins R+M+Cu, R and R1 pigmented slightly darker brown than other wing veins; legs pale yellow-brown with dark brown to black dorsal infuscation; abdominal tergites 1–5 dark brown; sternites dark brown each with a transverse yellow-brown suffusion; proctiger, subgenital plate and parameres dark brown. Female: [specimens in ethanol] greenish yellow with brown markings; vertex pale yellow-brown with brown medial marking in vicinity of fovea; pronotum with pale medial marking; mesopraescutum with a pair of brown longitudinal markings; mesoscutum with 2 pairs brown longitudinal markings; mesoscutellum pale yellow; abdominal tergites brown each with a transverse pale greenish-yellow suffusion; sternites brown each with a transverse pale greenish-yellow suffusion; proctiger yellow-brown with brown apex; hooked setae tipped black; subgenital plate pale yellow-brown with apex dark brown.

Structure. Measurements as in Tables 4–8 . Body large, compact ( Figs 91–94 ). Head ( Figs 95–96 ); vertex with weak medial suture, moderately sunk in vicinity of fovea; genal processes moderate in length, 0.36–0.45 times as long as vertex; antenna short, 0.82–0.88 times width of head, with 4–7 subapical rhinarium on segment 3, 3–5 on segment 4, 1–2 on segment 6 and a single subapical rhinarium on each of segments 8 and 9; segment 10 with a long bluntly rounded and a short bluntly rounded seta. Fore wing ( Figs 97–98 ) 4.26–5.44 times as long as head width, 2.51–2.76 times as long as wide, short, broad with slightly pointed apex; vein Rs evenly curved to costa, terminating well short of wing apex, considerably shorter than vein M, RsM: 0.78–0.84; medial cell short, smaller than cubital cell; veins M1+2 and M3+4 short, broadly diverging with corresponding low m1 cell value: 1.15–1.27; veins Cu1a and Cu1b short, each widely divergent with corresponding low cu1 cell value: 1.31–1.62; metatibia 0.89– 0.93 times as long as width of head, longer than metafemur, with 2 inner and 1 outer sclerotised apical spurs. Male terminalia ( Figs 125–126 ); proctiger very short, conoid, without expanded lateral lobes; subgenital plate broadly rounded; parameres ( Fig. 126 ) very short, broad with incurved sclerotised apices; distal portion of aedeagus moderate in length, with asymmetrical apical expansion ( Fig. 125 ). Female terminalia ( Fig. 133 ): proctiger short, triangular, posterior margin flat from lateral aspect and with weakly sclerotised apex; subgenital plate, triangular with tapering, weakly sclerotised apex; distal portion of proctiger with long pale setae and dense brush of hooked setae; subgenital plate with sparse long setae.

Comments. Myotrioza interioris sp. nov. can be distinguished by the following unique combination of characters: habitus as in Figs 91–94 , antenna with supernumerary rhinaria (4–7 rhinaria on segment 3, 3–5 on segment 4 and 1–2 on segment 6), fore wing short, broad with slightly pointed apex, fore wing veins R+M+Cu, R and R1 pigmented little darker than other wing veins, Rs considerably shorter than vein M ( Figs 97–98 ), female proctiger short, high with subapical dense field of hooked setae, valvula ventralis little curved, ventral profile of female subgenital plate flat ( Fig. 133 ), male proctiger conoid, with lateral lobes expanded distally, aedeagus long, paramere broad, blade-like with rounded apex ( Figs 125–126 ), host Eremophila , with eremean distribution. For diagnosis from closely related species, see Comments for M. desertorum sp. nov.

Etymology. Named after interior , referring to the eremean distribution of the species.

Host-plant association and distribution. ( Tables 2–3). Myotrioza interioris sp. nov. is recorded from an undetermined species of Eremophila at Credo Station Reserve and from Eremophila pantonii from Charles Darwin Reserve, Western Australia. It is one of 11 species of Myotrioza gen. nov. and 17 species of Triozidae recorded for Western Australia and is considered endemic to that state. It is one of 3 species of Myotrioza gen. nov., namely M. darwinensis sp. nov., M. interioris sp. nov. and M. pantonii sp. nov. from E. pantonii . For distribution of E. pantonii , refer to M. darwinensis sp. nov.

Figures

FIGURES 91 – 98. Myotrioza interioris, sp. nov. (91), habitus, male, (dorsal aspect); (92), habitus, female (dorsal aspect); (93), habitus, male (lateral aspect); (94), habitus, female (lateral aspect); (95), head, male (dorsal aspect, from slide); (96), head, female (dorsal aspect); (97), fore wing, male (from slide); (98), fore wing, female. Scale = 1.0 mm.

FIGURES 125 – 132. F igs 125 – 126: Myotrioza interioris, sp. nov. (125), male terminalia (lateral aspect); (126), paramere (inner face, lateral aspect); Figs 127 – 128: M. interstantis, sp. nov. (127), male terminalia (lateral aspect); (128), paramere (inner face, lateral aspect); Figs 129 – 130: M. longifoliae, sp. nov. (129), male terminalia (lateral aspect); (130), paramere (inner face, lateral aspect); Figs 131 – 132: M. markmitchelli, sp. nov. (131), male terminalia (lateral aspect); (132), paramere (inner face, lateral aspect). Scale = 0.2 mm for male terminalia, 0.1 mm for parameres.

FIGURES 133 – 136. Female terminalia (133), Myotrioza interioris, sp. nov.; (134), M. interstantis, sp. nov.; (135), M. longifoliae, sp. nov.; (136), M. markmitchelli, sp. nov. Scale = 0.5 mm (all at same scale).