Pseudophacopteron arcuatum, Malenovský & Burckhardt, 2009

Malenovský, Igor & Burckhardt, Daniel, 2009, A review of the Afrotropical jumping plant-lice of the Phacopteronidae (Hemiptera: Psylloidea), Zootaxa 2086 (1), pp. 1-74 : 29-30

publication ID	https://doi.org/ 10.11646/zootaxa.2086.1.1
DOI	https://doi.org/10.5281/zenodo.5316998
persistent identifier	https://treatment.plazi.org/id/EC223817-FF92-FFEF-FF22-FBB8FD51FBCB
treatment provided by	Felipe
scientific name	Pseudophacopteron arcuatum
status	sp. nov.

Treatment

Pseudophacopteron arcuatum View in CoL sp. nov.

( Figs. 43 View FIGURES 39–48 , 73 View FIGURES 67–76 , 118–120, 196, 240)

Description. Adult. Colour. Head and thorax in males almost uniformly dark brown to black, in females red brown to dark brown with vertex midline, lateral ocellar tubercles and lateral tubercles on pronotum all pale ochreous. Lateral sclerites of thorax dark brown in both sexes. Antenna off-white, in males segments 4–5 narrowly infuscated light brown apically and segments 6–8 narrowly dark brown apically, in females segments 3–8 dark brown apically; segments 9–10 entirely black in both sexes. Legs pale ochreous, metacoxa extensively dark brown, profemur and mesofemur with dark brown streaks near apex and base, metafemur dark brown dorsally, metatibia infuscated brown basally. Fore wing membrane clear, transparent, with dark brown pattern consisting of a continuous arch-like band going from costal margin across R vein and M+Cu 1 and Cu 1 forks along distal half of wing posterior margin (from Cu 1b to the posterior tip of cell r 2, leaving three small transparent crescents at wing margin in cu 1, m 1 and m 2) and small patches along apical part of vein Rs and on the touching point of Rs and M 1+2; wing base indistinctly infuscate ( Fig. 43 View FIGURES 39–48 ). Veins off-white, except for dark brown C+Sc, a spot in the middle of vein R+M+Cu 1 and its fork, two spots on anal vein and areas covered by dark brown patches. Hind wing clear, transparent, vein C+Sc dark brown. Abdominal tergites entirely dark brown or red brown dorsally and apically. Sternites in males ochreous and darker brown laterally, in females uniformly dark brown. Male terminalia ochreous, female terminalia brown.

Morphology. Vertex in males more or less smooth and shiny, lacking coarse microsculpture laterally and with fine microsculpture medially (similar to P. bicolor as in Figs. 7–8); vertex in females with coarse microscultpture, matt; sculpturing of vertex and genae similar as in P. marmoratum and P. verrucifrons . Antenna relatively slender, segments cylindrical, only slightly widening to apex; terminal setae subequal, short, the longer seta shorter than or as long as segments 9 and 10 together and 1.5 times or twice longer than the shorter seta ( Fig. 240 View FIGURES 230–246 ). Fore wing pyriform, apex truncate; surface spinulation present in all cells leaving wide spinules-free areas along veins ( Fig. 73 View FIGURES 67–76 ). Mesotibia with subapical comb on outer margin consisting of 5–6 stout setae. Metatibia with 7–9 relatively sparsely arranged apical spurs and 6–8 similar or slightly more slender spurs laterally. Metabasitarsus distinctly longer than broad. Male proctiger, in lateral view, relatively long and narrow (Fig. 118). Paramere relatively short, in lateral view, with anterior margin slightly convex and posterior margin nearly straight, apical part truncate, with apex forming a blunt tooth (Fig. 119). Apical dilation of distal segment of aedeagus hooked, narrowly sickle-shaped, apex acute (Fig. 120). Female proctiger and subgenital plate with long apical extensions; proctiger dorsal margin concave, circumanal pore ring composed of a single row of pores; subgenital plate, in lateral view, with acute apex ( Fig. 196 View FIGURES 188–200 ), in ventral view, similar to P. verrucifrons as in Fig. 194 View FIGURES 188–200 . Dorsal valvulae lacking distinct teeth, ventral valvulae laterally with usually five distinct pairs of fine teeth ( Fig. 196 View FIGURES 188–200 ). Measurements and ratios in Tabs. 2–4.

Larva unknown.

Host plant. Adults of the type series were collected on Commiphora africana (Burseraceae) which is a probable host.

Biology. Unknown.

Distribution. Kenya.

Material examined. Holotype, ♂, KENYA: Namanga, S slope of Ol Doinya Orok , ca. 5500 ft, 5–6 June 1974, beaten from Commiphora africana (D. Hollis) . Dry-mounted [ BMNH] . Paratypes: KENYA: 5 ♂, 12 ♀, same data as holotype. Dry- and slide-mounted [ BMNH, MMBC, NHMB] .

Etymology. Derived from the Latin adjective arcuatus = arched, bow-shaped, referring to the shape of the dark brown band on fore wing.

Comments. P. arcuatum appears related to P. marmoratum and P. verrucifrons , with which it may share the same host plant. It differs from both species in the fore wing pattern and surface spinulation, and the narrow sickle-shaped aedeagus. It is larger than P. verrucifrons . The fore wing pattern of P. arcuatum resembles dark specimens of P. eastopi , from which it can be differentiated by the dark brown patch on the apex of the fore wing vein Rs, and the shape of the paramere, the shape of the distal segment of aedeagus, as well as the shape of the female subgenital plate.