Myotrioza platycarpi, 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 : 66-68

publication ID

https://doi.org/ 10.11646/zootaxa.4073.1.1

publication LSID

lsid:zoobank.org:pub:A502D3A2-C070-4E9D-9F55-BA07C731FCF3

DOI

https://doi.org/10.5281/zenodo.6063734

persistent identifier

https://treatment.plazi.org/id/03FA87E9-E53D-FF91-6ED5-BFE0FAFA6C85

treatment provided by

Plazi

scientific name

Myotrioza platycarpi, Taylor
status

sp. nov.

Myotrioza platycarpi, Taylor View in CoL sp. nov.

( Figs 141 View FIGURES 137 – 141 , 166–173 View FIGURES 166 – 173 , 180–181 View FIGURES 174 – 181 , 185 View FIGURES 182 – 185 ; Tables 1–8 View TABLE 1 )

Types. AUSTRALIA, South Australia: Holotype: 1 ♂ (dried) Moorunde Wildlife Reserve, 34º25.184'S, 139º31.246'E, G.S. Taylor, 30.iii.2013, swept Myoporum platycarpum, 2013 0 0 5 (SAM). Paratypes: 6 ♂, 5 ♀ (dried), 5 ♂, 5 ♀ (slide), 3 ♂, 2 ♀ (ethanol), same data as holotype (SAM, WINC); 1 ♂, 1 ♀ (dried) same data except 9.vi.2013, 2013 0 16 (WINC); 1 ♂ (dried) Flinders Ranges, Beltana Station, 30º48.508'S, 138º25.260'E, R. Kittel, 7.iv.2011, roadside vegetation (WINC); 1 ♀ (dried) Flinders Ranges, 18 km E Blinman, Eregunda Creek, 31º05.604'S, 138º51.940'E, R. Kittel, 8.iv.2011, sweeping Senna artemisioides (WINC); 6 ♂, 4 ♀ (dried), 6 ♂, 2 ♀ (ethanol), Hiltaba Station Reserve, 32º06.145'S, 135º12.375'E, G.S. Taylor, 14.xi.2012, swept Myoporum platycarpum, 2012 109 (H23) (WINC); 2 ♂, 1 ♀ (ethanol), Hiltaba Bush Blitz, 32.10246ºS, 135.20624ºE, R. Kittel, 14.xi.2012, sweeping Myoporum (WINC); 7 ♀ (dried) Moorunde Wildlife Reserve, 34º25.185'S, 139º31.240'E, G.S. Taylor & L. Krogmann, 8.xii.2013, swept Myoporum platycarpum, 2013 154 SE120 (WINC). Victoria: 6 ♂, 1 ♀ (ethanol) Sturt Hwy, 100 km W Mildura [~ 34º16'S, 141º02'E], G.S. Taylor, 21.vi.1999, on Myoporum platycarpum (WINC). Northern Territory: 1 ♂ (dried) 3.6 km NW of Henbury homestead, Towards 3 Mile Creek, 1.5 km W Stuart Hwy, 24° 31' 33''S, 133° 13' 59''E, 431m, 16.v.2013, M. Cheng, C. Bayer, M. Colquhoun, beat Eremophila sturtii BBHS13 L15 H24 (WAM); 11 ♂, 7 ♀ (dried), 4 ♂, 2 ♀ (ethanol), Henbury Station, 14 km NE from Henbury homestead, North of Chandler Range, approx 2.3 km from Stuart Hwy, 24° 27' 56''S, 133° 21' 7''E, 549m, 17.v.2013 M. Cheng & C. Duykers, beat Eremophila sturtii BBHS13 L20 H31 (WAM, WINC).

Description. Adult ( Figs 166–169 View FIGURES 166 – 173 ). Colouration. Male: Vertex brown with dark brown marking in vicinity of fovea and darker anteriorly (some specimens uniformly dark brown); genal processes dark brown basally, pale brown apically; eyes reddish brown; antennal segments 1–7 yellow-brown, segments 8–10 dark brown to almost black; pronotum brown to dark brown with a pale yellow-brown medial marking and pale yellow-brown on lateral margin; mesopraescutum brown to dark brown with a pale yellow-brown thin medial stripe; mesoscutum with a dark brown medial stripe, two pairs of submedial markings and pale yellow-brown lateral margin (darker specimens uniformly dark brown medially with pale lateral margin); mesoscutellum brown to dark brown; fore and hind wings clear; fore wing veins equally pigmented brown; mesothoracic pleurite pale laterally, dark brown basally; legs pale yellow-brown, femora with medial brown marking, ultimate tarsal segments dark brown to black; meracanthus pale yellow-brown; abdominal tergites 1–5 dark brown to black sternites pale yellow-brown with variable brown submedial marking; proctiger, subgenital plate and parameres yellow-brown; apices of parameres black. Female: as for male except with generally paler brown markings in vicinity of fovea, on mesopraescutum, mesoscutum and abdominal tergites; proctiger and subgenital plate pale yellow-brown with apices dark brown to black; proctiger with additional dark brown infuscation basally, in vicinity of circumanal pore ring and dorsomedially.

Structure. Measurements as in Tables 4–8 View TABLE 4 View TABLE 5 View TABLE 6 View TABLE 7 View TABLE 8 . Body short, compact ( Figs 166–169 View FIGURES 166 – 173 ). Head ( Figs 170–171 View FIGURES 166 – 173 ); vertex with prominent medial suture, deeply sunk in vicinity of fovea; genal processes very short, 0.16–0.20 times as long as vertex; antenna very short, 0.51–0.65 times width of head, with 2 subapical rhinarium on each of segments 3 and 4, and a single subapical rhinaria on each of segments 6, 8 and 9; segment 10 with a bluntly rounded seta and a very short bluntly rounded seta. Fore wing ( Figs 172–173 View FIGURES 166 – 173 ) 3.78–4.42 times as long as head width, 2.50–2.88 times as long as wide, short, broad with rounded apex; vein Rs straight, slightly upturned distally, terminating short of wing apex, about same length as vein M, RsM: 0.95–1.08; medial and cubital cells subequal; veins M1+2 and M3+4 short, broadly diverging with corresponding low m1 cell value: 1.68–1.93; veins Cu1a short, arched and Cu1b short, each widely divergent with corresponding low cu1 cell value: 1.03–1.49; metatibia 0.86–0.94 times as long as width of head, considerably longer than metafemur, with 2 inner and 1 outer sclerotised apical spurs. Male terminalia ( Figs 180–181 View FIGURES 174 – 181 ); proctiger conoid, without lateral lobes; subgenital plate broadly rounded; parameres ( Fig. 181 View FIGURES 174 – 181 ) very short, broad, blade-like, evenly tapering to incurved sclerotised apices; distal portion of aedeagus short, with asymmetrical apical expansion ( Fig. 180 View FIGURES 174 – 181 ). Female terminalia ( Figs 141 View FIGURES 137 – 141 , 185 View FIGURES 182 – 185 ): proctiger short, truncate, with sclerotised apex; subgenital plate short, triangular with tapering sclerotised apex; distal portion of proctiger and subgenital plate with short setae.

Comments. Myotrioza platycarpi sp. nov. can be distinguished by the following unique combination of characters: habitus as in Figs 166–169 View FIGURES 166 – 173 antenna with supernumerary rhinaria, fore wing elongate with rounded apex, Rs about same length as vein M ( Figs 172–173 View FIGURES 166 – 173 ), female proctiger short with short setae, rounded blunt profile without terminal upward inflection, valvula ventralis little curved, ventral profile of female subgenital plate curved ( Fig. 141 View FIGURES 137 – 141 , 185 View FIGURES 182 – 185 ), male proctiger conoid without lateral lobe, aedeagus short, paramere broadly ovate with rounded apex ( Figs 180–181 View FIGURES 174 – 181 ).

Myotrioza platycarpi sp. nov. appears as sister to a clade comprising M. interioris sp. nov., M. myopori sp. nov., M. markmitchelli sp. nov., M. eremi sp. nov., M. desertorum sp. nov. ( Fig. 1 View FIGURE 1 ). On the basis of the presence of supernumerary rhinaria, it is likely that M. serrulatae sp. nov. (not represented in phylogeny) belongs to this clade. Myotrioza platycarpi sp. nov. is not particularly closely related to any species (COI sequence divergence>11% to its closest congeners) ( Table 1 View TABLE 1 ): M. insularis sp. nov. (COI sequence divergence 11.7–12.4%), M. clementsiana sp. nov. (12.9%), M. longifoliae sp. nov. (13.1–13.8%), M. markmitchelli sp. nov. (14.8%), M. interioris sp. nov. (15.0%) and M. myopori sp. nov. (15.3–15.5%) ( Table 1 View TABLE 1 ). It differs from these species by the short, rounded profile of the female proctiger, a character that is shared only with M. longifoliae sp. nov., but in the latter the female proctiger has long pale setae and and sparse field of pale weakly hooked setae (cf. Figs 138, 141 View FIGURES 137 – 141 ). The male paramere for the latter differs in that it is short, broad, with posterior hooked setae. (cf. Figs 129–130 View FIGURES 125 – 132. F , 180–181 View FIGURES 174 – 181 ). Myotrioza platycarpi sp. nov. differs from M. interioris sp. nov., M. myopori sp. nov., M. markmitchelli sp. nov., M. eremi sp. nov., M. desertorum sp. nov. as it is the only species in this postulated sister clade not to possess pigmented fore wing veins R+M+Cu, R and R1.

Etymology. Named after Myoporum platycarpum , the host species.

Host-plant association and distribution. ( Tables 2–3). Myotrioza myopori sp. nov. is recorded from Myoporum platycarpum R.Br. (Sugarwood, False Sandalwood) at widely separated localities at Beltana Station and Blinman in the Flinders Ranges, Hiltaba Station near the Gawler Ranges, near Blanchetown in eremean South Australia, north-eastern Victoria and from E. sturtii R.Br. at Henbury in the Northern Territory. It is one of 10 species of Myotrioza gen. nov. and 24 species of Triozidae recorded for South Australia; the only species of Myotrioza and one of only 5 species of Triozidae from Victoria; and the only species of Myotrioza and one of only 3 species of Triozidae from Northern Territory. It is likely to occupy a broad distribution given that its host plants are widely distributed in southern and central Australia. It is one of 4 species of Myotrioza gen. nov., namely M. clementsiana sp. nov., M. flindersiana sp. nov., M. myopori sp. nov. and M. platycarpi sp. nov. from M. platycarpum and the only species from E. sturtii . For distribution of M. platycarpum , refer to M. clementsiana sp. nov. Eremophila sturtii is a multi-stemmed shrub 1–3 m high that occurs on red loamy and sandy soils in Eucalyptus , Acacia and Casuarina woodlands in northern South Australia and southern Northern Territory and in eremean eastern South Australia, south-western Queensland and western New South Wales ( Chinnock 2007). Its record from Senna artemisioides is considered doubtful, being more likely to be vagrant from nearby plants.

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Hemiptera

Family

Triozidae

Genus

Myotrioza

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