Mitrapsylla securigera 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 securigera

description: Mitrapsylla securigera sp. nov.
(Figs 39, 128, 158, 188, 268 ‾270, 308, 338, 368, 379)
LSID: urn:lsid:zoobank.org:act: 3572F942-0060-4227-AF04-4FF67663B711
Material examined. Holotype ♁, Brazil: Goiás, Mossâmedes, Parque Estadual da Serra Dourada, park entrance, -16.0990, -50.1870, 710 m, 20.ii.2018, gallery forest, Cerrado, Machaerium hirtum (D. Burckhardt & D.L. Queiroz), #276(3) (DZUP 215432, dry).
Paratypes. Goiás: 3 ♁, 9 ♀, same data as holotype (D. Burckhardt & D.L. Queiroz), #276(3) (DZUP, NHMB, dry, slide mounted, 70% ethanol).— Minas Gerais: 1 ♁, Vazante, -17.9683, -46.9050, 720 m, 27.xii.2011, disturbed vegetation along dirt road (D. Burckhardt & D.L. Queiroz), #25(-) (NHMB, 70% ethanol); 1 ♁, Vazante, Fazenda Bainha, -17.8817, -46.8833, 660–670 m, 29–30.x.2012, Cerrado vegetation, edges of disturbed forest, eucalypt plantation, creek, Machaerium cf. ruddianum (D. Burckhardt & D.L. Queiroz), #50 (11) (NHMB, slide mounted); 1 ♁, same but -17.8800, -46.9233, 640–650 m, 13.vii.2012, disturbed Cerrado vegetation along unpaved road (D. Burckhardt & D.L. Queiroz), #41(-) (NHMB, 70% ethanol); 3 ♁, 3 ♀, same but Córrego Curtume, -17.8850, -46.9217, 650–660 m, 21–22.ix.2011, Cerrado along river, Machaerium sericiflorum (D. Burckhardt & D.L. Queiroz), #16(7) (NHMB, slide mounted, 70% ethanol); 2 ♁, same but near source of Curtume river, -17.8883, -46.9200, 640–690 m, 13–14.vii.2012, degraded Cerrado vegetation (D. Burckhardt & D.L. Queiroz), #40(-) (NHMB, 70% ethanol).
Diagnosis. Paramere, in lateral view, clavate, mitten-shaped; anterior half strongly expanded dorsally; posterior half deeply concave, expanded posteriorly; apex with two sclerotised teeth, one apically on posterior expansion and one subapically. Aedeagus complex tripartite; in lateral view, dorsal lobe with lateral lobule slightly smaller than median lobule, elongate, suboval; ventral process with apical expansion weak, globular. Female proctiger, in lateral view, with apex strongly upturned, strongly obliquely truncate. Female subgenital plate, in lateral view, with apex moderately truncate; ventral outline slightly sinuous in basal three quarters, apex irregularly oblique; lacking group of setae on dorsum subapically; in ventral view, apex broad, rounded, about a fourth the total length of the subgenital plate.
Description. Colouration. Body with white striped-pattern; variation: vertex with stripe along lateral margins and posterior margin absent. Mesoscutum with submedian stripe usually faint or absent; abdominal tergites lacking distinct striped-pattern; older specimens with markings with dark outline. Head and thorax dark yellow to orange; genal process sometimes sligthly lighter than head. Eye grey to dark red; ocelli colourless to orange. Antenna yellow, segments 1–2 concolorous with head. Clypeus dark yellow, lighter medially and darker along edges; rostrum yellow. Thorax lighter ventrally, with margins of sclerites slightly darker. Forewing colourless to yellowish, yellow around Cu 1b and sometimes slightly around M 3+4 and Cu 1a; veins yellow; pterostigma concolorous with veins. Hindwing colourless. Fore- and midleg dark yellow with tarsi darker, hindleg light yellow. Abdomen pale yellow; intersegmental membranes light straw-coloured; spiracular sclerites concolorous with abdomen. Male terminalia dark yellow. Female terminalia irregularly dark yellow, usually darker apically.
Structure. Body length ♁ 2.5–2.8 mm (2.65± 0.18 mm), ♀ 2.9 mm (2 ♁, 1 ♀). Genal process (Fig. 158) ex-panded, irregularly or evenly narrowing towards acute or subacute apex, 0.6 times as long as vertex along midline. Antenna 2.6–2.8 times as long as head width; longest terminal seta about as long or slightly longer than segment 10. Apical labium segment 0.1 times longer than head width and 0.6 times longer than median segment. Forewing (Fig. 188) 2.9 times as long as head width, 2.2–2.3 times as long as wide, suboval, narrowly rounded apically; vein M+Cu 1 0.3–0.5 times as long as Cu 1; ratio a/b 1.5; ratio c/d 0.7–0.8; ratio e/f 0.5–0.6. Surface spinules moderately spaced, forming rhomboids (Fig. 39); usually absent in cell c+sc covering apical half of cell r 1 apex of cell r 2, much reduced around radular areas of cells m 1, m 2 and cu 1, covering m 2 basally, and around Cu 2; leaving spinule-free spaces along veins (Fig. 42). Metatibia 0.7–0.8 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 268 ‾270) 1.0 times as long as proctiger; clavate, mittenshaped; anterior half strongly expanded dorsally; posterior half deeply concave, expanded posteriorly; apex with two sclerotised teeth, one apically on posterior expansion and one subapically; inner surface (Fig. 269) covered with long setae, with row of thick setae along apical margin and group of thick setae right below and on posterior expansion; in dorsal view (Fig. 308), bearing small anterior and larger, strongly sclerotised posterior tooth, former in lower level than latter. Aedeagus (Fig. 270) complex tripartite; in lateral view, dorsal lobe with flattened, slightly prominent median lobule; lateral lobule slightly smaller than median lobule, elongate, suboval; membranous pouch rather broad; ventral process weakly upturned, with apical expansion weak, subequal in size with dorsal lobe, globular, bearing short, conical tubercle.—Female (Fig. 338). Proctiger, in lateral view, 0.9 times as long as head width; dorsal outline 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, 0.5 times as long as proctiger; apex moderately truncate; ventral outline slightly sinuous in basal three quarters, apex irregularly oblique; covered with medium long setae in median third and ventrally throughout, short setae in apical half, very long setae at apex, without group of setae on dorsum subapically and without seta-free patch subapically; in ventral view (Fig. 368), lateral margins abruptly narrowing at apical fourth towards broad, rounded apex, about a fourth the total length of the subgenital plate.
Measurements (in mm) (1 ♁, 1 ♀). HW ♁ 0.68, ♀ 0.66; AL ♁ 1.78, ♀ 1.83; LAB2 ♁ 0.16, ♀ 0.15; LAB3 ♁ 0.09, ♀ 0.10; FL ♁ 1.98, ♀ 1.94; TL ♁ 0.50, ♀ 0.50; MP 0.24; PL 0.25; DL 0.25; FP 0.58.
Etymology. From Latin securiger = armed with an axe, referring to the axe-shaped paramere.
Distribution. Brazil: Goiás, Minas Gerais.
Host-plant. Adults were collected on Machaerium cf. ruddianum C.V. Mendonça & A.M.G. Azevedo and M. sericiflorum Vogel (Leguminosae, Papilionoideae, Aeschynomeneae) which both are likely hosts.
Habitat. Cerrado, Eucalyptus plantation, roadside vegetation, gallery forest.
Comments. Mitrapsylla securigera sp. nov. resembles M. machaerii sp. nov., M. clavata sp. nov. and M. surinamensis (Šulc) in the female subgenital plate moderately truncate in lateral view; but differs from them as it lacks a group of long setae on dorsum subapically.
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 85-86, DOI: 10.11646/zootaxa.4887.1.1, http://zenodo.org/record/4297565