Myotrioza pantonii 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 : 65-66

Myotrioza pantonii Taylor , sp. nov.

( Figs 158–165 , 178–179 , 184 ; Tables 1–8 )

Types. AUSTRALIA, Western Australia: Holotype: 1 ♂ (dried, point), 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: 8 ♀ (dried, point), 2 ♂, 4 ♀ (slide), 3 ♀ (ethanol), same data as holotype (WAM, WINC).

Description. Adult ( Figs 158–161 ). Colouration. Male: [specimens in ethanol] Light yellow brown: vertex with small brown marking in vicinity of fovea; eyes pale reddish brown; antennal segments 8–10 progressively dark brown; mesopraescutum with a pair of orange brown anterior submedial markings; mesoscutum with a narrow medial and two pairs of orange brown submedial markings; fore and hind wings clear; fore wing veins equally pigmented brown; legs pale yellow-brown; abdominal tergites 1–5 dark brown; sternites brown to dark brown; proctiger, subgenital plate and parameres yellow-brown; anterior face of proctiger with brown infuscation; subgenital plate with a brown marking anteriolaterally; apices of parameres dark brown to black. Female: [specimens point-mounted] as for male except slightly darker; proctiger pale yellow-brown, with lateral brown infuscation and apex dark brown to black; subgenital plate pale yellow-brown, dark brown infuscation anteriorly and apex dark reddish brown.

Structure. Measurements as in Tables 4–8 . Body short, compact ( Figs 158–161 ). Head ( Figs 162–163 ); vertex with weak medial suture, moderately sunk in vicinity of fovea; genal processes short, 0.37–0.43 times as long as vertex; antenna very short, 0.62–0.71 times width of head, with a single subapical rhinarium on each of segments 4, 6, 8 and 9; segment 10 with a bluntly rounded and a very short bluntly rounded seta. Fore wing ( Figs 164–165 ) 3.40–4.01 times as long as head width, 2.53–2.96 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: 0.84–0.96; medial cell short, a little shorter than cubital cell; veins M1+2 and M3+4 short, broadly diverging with corresponding low m1 cell value: 1.27–1.50; veins Cu1a short, arched and Cu1b short, each narrowly divergent with corresponding high cu1 cell value: 0.74–1.00; metatibia 0.56–0.63 times as long as width of head, longer than metafemur, without sclerotised apical spurs. Male terminalia ( Figs 178–179 ); proctiger conoid, with expanded lateral lobes; subgenital plate broadly rounded; parameres ( Fig. 179 ) short, narrow, blade-like, evenly tapering to incurved sclerotised apices; distal portion of aedeagus moderate in length, with asymmetrical apical expansion ( Fig. 178 ). Female terminalia ( Fig. 184 ): proctiger high, triangular, posterior margin flat from lateral aspect and with blunt apex; subgenital plate, triangular with tapering, sharply pointed apex; distal portion of proctiger with a field of weakly hooked pale setae subapically and dense long pale setae dorsally; subgenital plate with sparse long setae.

Comments. Myotrioza pantonii sp. nov. can be distinguished by the following unique combination of characters: habitus as in Figs 158–161 , antenna with normal arrangement of rhinaria, fore wing broad with rounded apex, Rs little shorter than vein M ( Figs 164–165 ), female proctiger with sparse field of weakly hooked setae, flat profile with elongate terminal upward inflection, valvula ventralis curved, ventral profile of female subgenital plate flat ( Fig. 184 ), male proctiger conoid with medial lobe, aedeagus thin, elongate, paramere triangular with sharply pointed apex ( Figs 178–179 ). For diagnosis from closely related species, see Comments for M. darwinensis sp. nov.

Etymology. Named after Eremophila pantonii , the host species.

Host-plant association and distribution. ( Tables 2–3). Myotrioza pantonii sp. nov. is recorded from Eremophila pantonii at Charles Darwin Reserve in eremean 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 158 – 165. Myotrioza pantonii, sp. nov. (158), habitus, male, (dorsal aspect); (159), habitus, female (dorsal aspect); (160), habitus, male (lateral aspect); (161), habitus, female (lateral aspect); (162), head, male (dorsal aspect, from slide); (163), head, female (dorsal aspect); (164), fore wing, male (from slide); (165), fore wing, female. Scale = 1.0 mm.

FIGURES 174 – 181. Figs 174 – 175: Myotrioza myopori, sp. nov. (174), male terminalia (lateral aspect); (175), paramere (inner face, lateral aspect); Figs 176 – 177: M. oppositifoliae, sp. nov. (176), male terminalia (lateral aspect); (177), paramere (inner face, lateral aspect); Figs 178 – 179: M. pantonii, sp. nov. (178), male terminalia (lateral aspect); (179), paramere (inner face, lateral aspect); Figs 180 – 181: M. platycarpi, sp. nov. (180), male terminalia (lateral aspect); (181), paramere (inner face, lateral aspect). Scale = 0.2 mm for male terminalia, 0.1 mm for parameres.

FIGURES 182 – 185. Female terminalia (182), Myotrioza myopori, sp. nov.; (183), M. oppositifoliae, sp. nov.; (184), M. pantonii, sp. nov.; (185), M. platycarpi, sp. nov. Scale = 0.5 mm (all at same scale).