Mitrapsylla clavata Rendón-Mera & Burckhardt & Cavichioli & Queiroz 2020, sp. nov.
Creators: name: Rendón-Mera, Diana Isabel
name: Burckhardt, Daniel
name: Cavichioli, Rodney R.
name: Queiroz, Dalva L.
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Psyllidae
Mitrapsylla
Mitrapsylla clavata

description: Mitrapsylla clavata sp. nov.
(Figs 16, 110, 140, 170, 214 ‾216, 290, 320, 350, 374)
LSID: urn:lsid:zoobank.org:act: 0314348F-F6FF-4A0B-AF68-23A2261D18DF
Material examined. Holotype ♁, Brazil: Distrito Federal, BR040 km 1, -15.9860, -47.9870, 1220 m, 14.ii.2018, Cerrado, Fabaceae (D. Burckhardt & D.L. Queiroz), #264(2) (DZUP 215403, dry).
Paratypes. Distrito Federal: 2 ♁, 10 ♀, same data as holotype (D. Burckhardt & D.L. Queiroz), #264(2) (DZUP, NHMB, dry, slide mounted, 70% ethanol).
Diagnosis. Head and thorax multi-coloured, sometimes darker ventrally. Paramere, in lateral view, clavate, weakly expanded apically; weakly sinuous; apex irregularly rounded. Aedeagus complex tripartite; in lateral view, lateral lobule about as half as long as median lobule, subtriangular, truncate apically; ventral process with apical expansion larger than dorsal lobe. Female proctiger, in lateral view, with apex strongly upturned, strongly obliquely truncate. Female subgenital plate, in lateral view, moderately truncate; mostly covered with medium long setae; with group of long setae on dorsum subapically; with seta-free patch subapically; in ventral view, apex broadly truncate, about a third the total length of the subgenital plate.
Description. Colouration. Body with white striped-pattern; variation: mesopraescutum with an additional stripe along posterior margin; mesoscutellum with stripe along lateral margins sometimes slightly projected towards anterior and posterior margins; older specimens with markings with dark outline. Head and thorax multi-coloured, ground colour yellowish-brown, orange, reddish-brown to brown. Vertex sometimes with dark markings. Gena brown to dark brown anteriorly and ventrally; genal process lighter than rest of gena. Eye grey to dark red; ocelli colourless to orange. Antenna yellow to light brown, segments 1–2 slightly darker. Clypeus yellow to brown, darker along edges; rostrum light yellow to dark yellow. Thorax brown to dark brown lateroventrally, sometimes with margins of sclerites darker. Mesopraescutum usually with median light to white irregular transversal marking and posterior half irregularly coloured. Forewing colourless to yellowish, usually yellow around vein Cu 1b; veins light to dark yellow; pterostigma concolorous or slightly lighter than veins. Hindwing colourless. Fore- and midleg dark yellow, sometimes with tarsi darker, hindleg yellow with femur brown to dark brown except apically. Abdomen yellowish-brown to dark brown, sometimes darker ventrally; intersegmental membranes light straw-coloured to orange; spiracular sclerites concolorous with tergites. Male proctiger and subgenital plate irregularly brown and paramere yellowish. Female proctiger irregularly brown and subgenital plate yellowish, brown basally.
Structure. Body length ♁ 2.4 mm, ♀ 2.6–3.2 mm (2.94± 0.25 mm) (1 ♁, 5 ♀). Genal process (Fig. 140) subconi-cal, irregularly narrowing towards subacute apex, 0.4–0.7 times as long as vertex along midline. Antenna 2.4–2.8 times as long as head width; longest terminal seta about as long or slightly shorter than segment 10. Apical labium segment 0.1–0.2 times longer than head width and 0.6–0.7 times longer than median segment. Forewing (Fig. 170) 3.0–3.1 times as long as head width, 2.3–2.4 times as long as wide, obovoid or suboval, narrowly or slightly broadly rounded apically; vein M+Cu 1 0.2–0.4 times as long as Cu 1; ratio a/b 1.6–1.8; ratio c/d 0.8–0.9; ratio e/f 0.5–1.3. Surface spinules distinctly (Fig. 38) to moderately (Fig. 39) spaced, forming rhomboids; covering apical half of cells r 1 and r 2, around radular areas of cells m 1, m 2 and cu 1, m 2 basally, and most of cell cu 2; leaving spinule-free spaces along veins (Fig. 42). Metatibia 0.7 times as long as head width.
Terminalia. Male. Proctiger, in lateral view, 0.4 times as long as head width; with long, blunt, weakly downcurved posterior lobe. Paramere, in lateral view (Figs 214 ‾216) 0.8 times as long as proctiger; clavate, weakly expanded apically, weakly sinuous, with posterior margin slightly angulate apically; apex irregularly rounded; inner surface (Fig. 215) covered with long setae, longer along posterior margin, with row of thick setae along apical anterior margin, and several thick setae below sclerotised ridge, one of which very long; in dorsal view (Fig. 290), bearing posterior tooth. Aedeagus (Fig. 216) complex tripartite; in lateral view, dorsal lobe with prominent median lobule; lateral lobule about as half as long as median lobule, subtriangular, truncate apically; membranous pouch narrow, elongate; ventral process weakly upturned, with apical expansion larger than dorsal lobe, oval, bearing short, conical tubercle.—Female (Fig. 320). Proctiger, in lateral view, 1.0–1.1 times as long as head width; dorsal outline moderately to strongly concave distal to circumanal ring, apical extension almost straight to sinuous, apex strongly upturned, strongly obliquely truncate; circumanal ring 0.3 times as long as proctiger. Subgenital plate, in lateral view, 0.4–0.5 times as long as proctiger; apex moderately truncate; ventral outline slightly to strongly sinuous along basal two thirds, slightly notched subapically, apical third oblique; covered with medium long setae in median third and ventrally throughout, short setae in apical third, long setae at apex, and group of long setae on dorsum subapically, with seta-free patch subapically; in ventral view (Fig. 350), lateral margins abruptly narrowing at apical third, with apical quarter subparallel, and apex broadly truncate, about a third the total length of the subgenital plate.
Measurements (in mm) (1 ♁, 4 ♀). HW ♁ 0.66, ♀ 0.70–0.76 (0.72±0.02); AL ♁ 1.80, ♀ 1.67–1.99 (1.87±0.14); LAB2 ♁ 0.18, ♀ 0.17–0.18 (0.18±0.01); LAB3 ♁ 0.12, ♀ 0.11–0.12 (0.11±0.01); TL ♁ 0.48, ♀ 0.51–0.54 (0.52±0.01); FL ♁ 1.84, ♀ 2.12–2.31 (2.19±0.08); MP 0.28; PL 0.22; DL 0.16; FP 0.69–0.80 (0.76±0.05).
Etymology. From Latin clavatus = decorated with nails or studs, referring to the stud-shaped paramere.
Distribution. Brazil: Distrito Federal.
Host-plant. Unknown.
Habitat. Cerrado.
Comments. Mitrapsylla clavata sp. nov. resembles M. fusca Brown & Hodkinson in the dark colouration, the paramere relatively narrow, S-shaped, in lateral view, and the tripartite aedeagus; but differs in the longer genal process, the less sinuate posterior margin of the paramere, the aedeagus, in lateral view, with lateral lobule truncate apically (rather than narrowly rounded), the apical expansion of the ventral process oval (rather than globular), the female terminalia, in lateral view, with apex of proctiger strongly upturned, and the subgenital plate shorter, moderately truncate. It also resembles dark specimens of M. andirae sp. nov. and M. periandrae sp. nov. in the multicoloured colouration; but differs from them in the paramere weakly expanded apically, and tripartite aedeagus. Females of M. clavata sp. nov. resemble M. machaerii sp. nov. in the female subgenital plate, in lateral view, with a group of long setae subapically in dorsum and, in ventral view, with apex about a third the total length of the subgenital plate; but differs in the proctiger with apex strongly upturned, and subgenital plate with apex truncate in ventral view (rather than rounded). Females also resemble M. securigera sp. nov. and M. surinamensis (Šulc) in the moderately truncate subgenital plate; but differs from M. surinamensis (Šulc) in the subgenital plate with short setae apically (rather than long). See comments under M. securigera sp. nov.
description: Published as part of Rendón-Mera, Diana Isabel, Burckhardt, Daniel, Cavichioli, Rodney R. & Queiroz, Dalva L., 2020, Taxonomy and host-plant relationships of the psyllid genus Mitrapsylla (Hemiptera: Psylloidea: Psyllidae) in Brazil, pp. 1-100 in Zootaxa 4887 (1) on pages 29-30, DOI: 10.11646/zootaxa.4887.1.1, http://zenodo.org/record/4297565