Mitrapsylla villosi,

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, Zootaxa 4887 (1), pp. 1-100: 89-90

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Mitrapsylla villosi

sp. nov.

Mitrapsylla villosi  sp. nov.

( Figs 131View FIGURES 123–132, 161View FIGURES 148–162, 191View FIGURES 183–192, 277View FIGURES 274–282 ‾279, 311, 341, 371, 380)


Material examined. Holotype ♁, Brazil: Mato Grosso do Sul, Jardim , near BR267, -21.4500, -55.7917, 380–440 m, 18–20.xi.2012, Cerrado edge along unpaved road, gallery forest along river, single trees in field, Machaerium villosum (D. Burckhardt & D.L. Queiroz)  , #76(8) ( DZUP 215438View Materials, dry).GoogleMaps 

Paratypes. Mato Grosso do Sul: 42 ♁, 40 ♀, 9 immatures, same data as holotype (D. Burckhardt & D.L. Queiroz), #76(8) ( DZUP, NHMB, dry, slide mounted, 70% ethanol); 28GoogleMaps  ♁, 25 ♀, Rochedo, MS 080, -19.9683, -54.6500, 350 m, 15.xi.2012, Cerrado, Acacia mearnsii (D. Burckhardt & D.L. Queiroz)  , #73(2) ( NHMB, slide mounted, 70% ethanol)GoogleMaps  .

Diagnosis. Surface spinules fully covering cells m 1, m 2, and cu 1 (sometimes restricted to radular areas). Paramere, in lateral view, clavate, strongly expanded apically; anterior margin expanding dorsally and anteriorly in apical third; apex strongly indented in anterior third, with sclerotised ridge in posterior half; in dorsal view, sclerotised ridge slightly sinuous, bearing posterior tooth. Aedeagus complex unipartite; in lateral view, ventral process with apical expansion larger than dorsal lobe.

Description. Colouration. Body with white striped-pattern; variation: vertex with stripe along posterior margin weak when present; mesopraescutum with lateral stripes fused to lateral spots on posterior margin; metascutellum almost entirely lighter than rest of thorax; mesoepisternum with markings usually inconspicuous; older specimens with markings with dark outline. Head and thorax pale yellow, yellowish-orange, yellowish-brown; genal process slightly lighter than head. Eye grey to dark red; ocelli colourless to orange. Antenna light yellowish-brown, segments 1–2 concolorous with head. Clypeus concolorous with head, slightly lighter medially and slightly darker along edges; rostrum light yellow. Thorax with margins of sclerites slightly darker. Forewing colourless to yellowish, yellow around Cu 1b and sometimes slightly around M 1+2, M 3+4 and Cu 1a; veins yellow; pterostigma concolorous or slightly lighter than veins. Hindwing colourless. Fore- and midleg dark yellow, hindleg light yellow. Abdomen light straw-coloured, pale yellow to light yellowish-brown; intersegmental membranes light straw-coloured; spiracular sclerites concolorous with tergites. Male terminalia irregularly light to dark yellow. Female terminalia irregularly light to dark yellow, proctiger darker apically.

Structure. Body length ♁ 2.2–2.5 mm (2.35± 0.1 mm), ♀ 2.3–2.6 mm (2.48± 0.13 mm) (5 ♁, 5 ♀). Genal process ( Fig. 161View FIGURES 148–162) expanded or subconical, irregularly narrowing towards acute, subacute or narrowly rounded apex, 0.6 times as long as vertex along midline. Antenna 2.2–2.5 times as long as head width; longest terminal seta about as long as segment 10. Apical labium segment 0.2 times longer than head width and 0.7–0.8 times longer than median segment. Forewing ( Fig. 191View FIGURES 183–192) 2.8–2.9 times as long as head width, 2.3 times as long as wide, obovoid, slightly narrowly or broadly rounded apically; vein M+Cu 1 0.3–0.4 times as long as Cu 1; ratio a/b 1.4–1.7; ratio c/d 0.7–0.8; ratio e/f 0.5–1.0. Surface spinules distinctly ( Fig. 38View FIGURES 38–43) to moderately ( Fig. 39View FIGURES 38–43) spaced, forming rhomboids; covering apical half of cell r 1, apical half or third of cell r 2, fully covering cells m 1, m 2, and cu 1 (sometimes restricted to radular areas), m 2 basally, and most of cell cu 2; leaving spinule-free spaces along veins ( Fig. 42View FIGURES 38–43). Radular spinules sometimes present in r 2 but inconspicuous. Metatibia 0.6–0.8 times as long as head width.

Terminalia. Male. Proctiger, in lateral view, 0.4 times as long as head width; with long, weakly tapered, weakly down-curved posterior lobe. Paramere, in lateral view ( Figs 277View FIGURES 274–282 ‾279) 0.7–0.8 times as long as proctiger; clavate, strongly expanded apically; anterior margin expanding dorsally and anteriorly in apical third, irregularly concave basally; posterior margin strongly expanding in apical third or quarter, slightly concave subapically, weakly convex in basal half; apex strongly indented in anterior third, with sclerotised ridge in posterior half ( Fig. 278View FIGURES 274–282); inner surface ( Fig. 278View FIGURES 274–282) covered with short setae, longer basally and along posterior margin, with row of thick setae along apical anterior margin, several thick setae below sclerotised ridge, and group of stout setae on apical posterior margin; in dorsal view ( Fig. 311View FIGURES 283–312), sclerotised ridge slightly sinuous, bearing posterior tooth. Aedeagus ( Fig. 279View FIGURES 274–282) complex unipartite; in lateral view, dorsal lobe subtriangular; ventral process weakly to strongly upturned, with apical expansion larger than dorsal lobe, irregularly oval, slightly angulate at apex, bearing long, conical tubercle.—Female ( Fig. 341View FIGURES 337–342). Proctiger, in lateral view, 0.9 times as long as head width; dorsal outline moderately to strongly concave distal to circumanal ring, apical extension sinuous, apex slightly to moderately upturned, smoothly transversally truncate to strongly obliquely truncate; circumanal ring 0.3 times as long as proctiger. Subgenital plate, in lateral view, 0.5–0.6 times as long as proctiger; apex well-developed; basal half of ventral outline strongly expanded, apical half almost straight to slightly convex; 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. 371View FIGURES 363–372), lateral margins evenly, strongly narrowing at apical third towards narrow, acutely rounded apex.

Measurements (in mm) (3 ♁, 2 ♀). HW ♁ 0.57–0.62 (0.60±0.02), ♀ 0.64–0.68 (0.66±0.03); AL ♁ 1.34–1.53 (1.42±0.1), ♀ 1.43–1.58 (1.50±0.11); LAB2 ♁ 0.15, ♀ 0.15–0.16 (0.15±0.01); LAB3 ♁ 0.11–0.12 (0.11±0.01), ♀ 0.12; FL ♁ 1.61–1.71 (1.67±0.05), ♀ 1.87–1.92 (1.89±0.04); TL ♁ 0.42–0.46 (0.44±0.02), ♀ 0.43–0.44 (0.43±0.01); MP 0.23–0.26 (0.24±0.01); PL 0.18–0.19 (0.18±0.01); DL 0.26–0.27 (0.26±0.01); FP 0.56–0.58 (0.57±0.02).

Etymology. Named after its host-plant specific epithet, Machaerium villosum  .

Distribution. Brazil: Mato Grosso do Sul.

Host-plant. Machaerium villosum Vogel  (Leguminosae, Papilionoideae  , Aeschynomeneae).

Habitat. Cerrado, gallery forest.

Comments. Mitrapsylla villosi  sp. nov. resembles M. cujabensis  sp. nov., M. itaparica (Crawford)  and M. soror  sp. nov. (see comments under each species).


Universidade Federal do Parana, Colecao de Entomologia Pe. Jesus Santiago Moure


Natural History Museum Bucharest