Myotrioza desertorum Taylor, sp. nov.
Creators: name: Taylor, Gary S.
name: Fagan-Jeffries, Erinn P.
name: Austin, Andy D.
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Triozidae
Myotrioza
Myotrioza desertorum

description: Myotrioza desertorum Taylor, sp. nov.
(Figs 19–26, 39–40, 45; Tables 1–8)
Types. AUSTRALIA, Western Australia: Holotype: 1 ♂ (dried), Credo Station Reserve, SW, 30º28.046'S, 120º43.222'E, G.S. Taylor, 31.viii.2011, swept, Eremophila sp., 2011 132, CR13 (WAM). Paratypes: 1 ♀ (dried), 2 ♂, 1 ♀ (slide), 1 ♀ (part, ethanol), same data as holotype (WAM, WINC).
Description. Adult (Figs 19–22). Colouration. Male: [specimens in ethanol] Brown with dark brown to black markings: vertex dark brown with a pale submedial suffused marking between medial suture and fovea; eyes reddish brown; antennal segments 1–2 with brown infuscation, 8–10 progressively dark brown to black; genal processes dark brown to black; pronotum with pale medial suffusion; mesopraescutum with a pair of broad brown to dark brown submedial markings; mesoscutum with a medial and two pairs of dark brown to dark brown submedial markings; mesoscutellum brown to dark brown; fore and hind wings clear; fore wing veins R+M+Cu, R and R1 pigmented slightly darker brown than other wing veins; legs yellow-brown with brown to dark brown infuscation on dorsal femora and tibia; abdominal tergites 1–5 dark brown to black; sternites pale yellow brown with medial brown infuscation; abdominal membrane colouration pale; proctiger dark brown paler dorsolaterally; subgenital plate dark brown with pale anteriomedially; parameres yellow brown basally, with extensive brown infuscation posteriorly and apices black. Female: [specimens in ethanol] considerably paler than male, yellow brown; vertex with brown subapical band and small brown marking in vicinity of fovea; pronotum pale yellow brown, paler medially; mesopraescutum very pale with a thin medial stripe and a pair of light orange brown submedial markings; mesoscutum very pale with an indistinct orange brown medial stripe and a pair of orange brown submedial markings; mesoscutellum pale yellow brown; abdominal tergites 1–5 brown, with segments 2–4 each with a well-defined very pale yellow brown, almost white, submedial marking; sternites pale yellow brown with brown medial infuscation; proctiger brown, paler on posterior margin; subgenital plate pale yellow brown with orange brown apex.
Structure. Measurements as in Tables 4–8. Body large, compact (Figs 19–22). Head (Figs 23–24); vertex with prominent medial suture, moderately sunk in vicinity of fovea; genal processes moderate in length, 0.48–0.56 times as long as vertex; antenna short, 0.79–0.86 times width of head, with two subapical rhinaria on each of segments 3 and 4, 1–2 on segment 6 and a single rhinarium on each of segments 8 and 9; segment 10 with a short bluntly rounded seta and a minute bluntly rounded seta. Fore wing (Figs 25–26) 5.21–5.29 times as long as head width, 2.63–2.80 times as long as wide, short, broad with slightly pointed apex; vein Rs straight, slightly upturned distally, terminating short of wing apex, little shorter than vein M, RsM: 0.90–0.97; medial cell short, a little shorter than cubital cell; veins M1+2 and M3+4 short, broadly diverging with corresponding low m1 cell value: 1.13–1.68; veins Cu1a long, weakly arched and Cu1b short, widely divergent with corresponding moderate cu1 cell value: 1.84–2.00; metatibia 0.96–1.03 times as long as width of head, considerably longer than metafemur, with 2 inner and 1 outer indistinct, barely sclerotised apical spurs. Male terminalia (Figs 39–40); proctiger conoid, short, with weakly expanded lateral lobes; subgenital plate broadly rounded; parameres (Fig. 40) short, broad, blade-like, evenly tapering to incurved sclerotised apices; distal portion of aedeagus moderate in length, with asymmetrical apical expansion (Fig. 39). Female terminalia (Fig. 45): proctiger short, triangular, posterior margin flat from lateral aspect and with strongly sclerotised sharply pointed apex; subgenital plate, triangular with tapering, strongly sclerotised sharply pointed apex; distal portion of proctiger with dense short pale setae and subapical dense brush of short dark sclerotised hooked setae; subgenital plate with very sparse short setae.
Comments. Myotrioza desertorum sp. nov. can be distinguished by the following unique combination of characters: habitus as in Figs 19–22, antenna with supernumerary rhinaria (2 on each of antennal segment 3 and 4, 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 little shorter than vein M (Figs 25–26), female proctiger short, high with subapical dense field of hooked setae, valvula ventralis little curved, ventral profile of female subgenital plate flat (Fig. 45), male proctiger conoid, with lateral lobes expanded distally, aedeagus long, paramere broad, blade-like with rounded apex (Figs 39–40), host Eremophila, with eremean distribution.
Myotrioza desertorum sp. nov. is most closely related to M. myopori sp. nov. (COI sequence divergence 10.0%), M. interioris sp. nov. (11.2%), M. eremi sp. nov. (13.6%) and M. markmitchelli sp. nov. (13.8%) (Table 1), defined by the presence of supernumerary rhinaria and pigmented fore wing veins R+M+Cu, R and R1. On the basis of these characters it is likely that M. serrulatae sp. nov. (not represented in phylogeny) belongs to this clade. Sister taxon to this clade, M. platycarpi sp. nov. has supernumerary rhinaria, but fore wing veins are equally pigmented.
Myotrioza desertorum sp. nov. differs from M. myopori sp. nov. by habitus and colour (distinctive pale submedial markings on female abdomen in former, lacking in latter) (cf. Figs 19–22, 142–145), weakly pigmented fore wing veins R+M+Cu, R and R1 (darker in latter) and vein Rs little shorter than vein M in former, considerably shorter in latter (cf. Figs 25–26, 148–149) and shape of male paramere (shorter, squatter in latter) (cf. Figs 39–40, 174–175).
It differs from M. interioris sp. nov. by habitus and colour (pale submedial markings on female abdomen lacking in latter, male with pale abdominal sternites in former, dark in latter) (cf. Figs 19–22, 91–94), number of supernumerary rhinaria (2 on each of antennal segments 3 and 4 in M. desertorum sp. nov., but with 4–7 rhinaria on segment 3 and 3–5 on segment 4 in M. interioris sp. nov.), vein Rs considerably shorter in latter (cf. Figs 25–26, 97–98). It differs from M. eremi sp. nov. by habitus and colour (cf. Figs 19–22, 27–30), fore wing veins R+M+Cu, R and R1 (darker in latter), vein Rs considerably shorter in latter, fore wing apex slightly pointed in former, acutely pointed in latter (cf. Figs 25–26, 33–34) and shape of parameres (short, stout, trapezoid in latter) (cf. Figs 39–40, 41–42).
Myotrioza desertorum sp. nov. differs from M. markmitchelli sp. nov. by habitus and colour (pale submedial markings on female abdomen in former, pale medial stripe in latter, male dark in latter) (cf. Figs 19–22, 115–118), vein Rs considerably shorter and fore wing apex acutely pointed in latter (cf. Figs 25–26, 121–122), size and shape of parameres (larger, more pointed apices in latter) (cf. Figs 39–40, 131–132) and host Myoporum, with coastal distribution in latter. It differs from M. serrulatae sp. nov. in number of supernumerary rhinaria with 24–30 rhinaria on segment 3 and 15–18 on segment 4 in the latter (Fig. 137), vein Rs considerably shorter in the latter (cf. Figs 25–26, 203–204), and shape of parameres (very short in latter) (cf. Figs 39–40, 215–216).
Etymology. Named after L. desertorum, of the deserts.
Host-plant association and distribution. (Tables 2–3). Myotrioza desertorum sp. nov. is recorded from an undetermined species of Eremophila, from a single locality at Credo Station, near Coolgardie, Western Australia. It is one of 11 species of Myotrioza gen. nov. and 17 species of Triozidae recorded for Western Australia. It is considered endemic to that state.
. interstantis ♂ 4 1.66-1.72 2.41-2.59 0.48-0.50 0.09-0.10 0.23-0.25 0.28-0.32 0.30-0.32 0.05-0.06 ♀ 4 1.93-2.03 2.83-3.10 0.53-0.55 0.10-0.12 0.23-0.26 0.33-0.34 0.31-0.37 0.05-0.07 ……continued on the next page. interstantis ♂ 4 1.83-2.03 0.66-0.74 0.89-1.04 0.89-1.04 0.33-0.46 0.28-0.32 0.28-0.34 0.32-0.36
♀ 4 2.15-2.41 0.80-0.86 1.09-1.24 1.04-1.22 0.45-0.56 0.34-0.38 0.37-0.43 0.35-0.42
… …continued on the next page. interstantis ♂ 4 0.26-0.32 0.23-0.25 0.20-0.22 0.21-0.24 0.19-0.20
♀ 4 0.32-0.36 0.44-0.45 0.11-0.13 0.27-0.30 ……continued on the next page. interstantis ♂ 4 0.36-0.40 0.78-0.82 0.47-0.50 0.60-0.65 0.53-0.64 0.45-0.49
♀ 4 0.39-0.48 0.70-0.79 0.42-0.49 0.55-0.67 0.60-0.65 0.81-0.84 3.46-4.09 1.53-1.64 ……continued on the next page. interstantis ♂ 4 3.69-4.13 2.06-2.82 0.95-1.00 0.35-0.48 1.18-1.44 0.82-0.97
♀ 4 3.94-4.38 2.59-2.97 1.00-1.07 0.38-0.48 1.24-1.50 0.90-1.11
……continued on the next page
description: Published as part of 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), pp. 1-84 in Zootaxa 4073 (1) on pages 23-34, DOI: 10.11646/zootaxa.4073.1.1, http://zenodo.org/record/270709