Mitrapsylla melanothorax 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 melanothorax

description: Mitrapsylla melanothorax sp. nov.
(Figs 122, 152, 182, 250 ‾252, 302, 332, 362, 378)
LSID: urn:lsid:zoobank.org:act: 406C40D8-403F-4A85-BB22-EA7ABCA5F3DB
Material examined. Holotype ♁, Brazil: Minas Gerais, Vazante, Votorantim, -17.6306, -46.6999, 550 m, 17.iii.2015, Machaerium amplum (D.L. Queiroz), #690(1) (DZUP 215421, dry).
Paratypes. Mato Grosso: 1 ♀, Nova Mutum, BR163 Road, -14.1367, -56.0983, 330 m, 4.xi.2012, transitional forest (Cerrado / Amazonian) (D. Burckhardt & D.L. Queiroz), #60(-) (NHMB, 70% ethanol); 1 ♁, 1 ♀, Sinop, -11.8650, -55.5217, 380 m, 5.xi.2012, edge of degraded forest (D. Burckhardt & D.L. Queiroz), #61(-) (NHMB, 70% ethanol); 7 ♁, 10 ♀, 3 immatures, Tabaporã, Fazenda Crestani, -11.3133, -55.9617, 330–380 m, 6–8.xi.2012, transitional forest near river, forest edges, farm land, park vegetation, Machaerium cf. ruddianum (D. Burckhardt & D.L. Queiroz), #62(12) (NHMB, 70% ethanol).— Minas Gerais: 20 ♁, 12 ♀, same data as holotype, Machaerium amplum (D.L. Queiroz), #690(1) (NHMB, 70% ethanol); 1 ♁, 1 ♀, Vazante, Fazenda Bainha, -17.8817, -46.8833, 640–650 m, 26.xii.2014, disturbed Cerrado vegetation along unpaved road (D.L. Queiroz), #662 (NHMB, 70% ethanol); 3 ♁, same but -17.8800, -46.9233, 660–670 m, 29–30.x.2012, Cerrado vegetation, edges of disturbed forest, eucalypt plantation, creek (D. Burckhardt & D.L. Queiroz), #50(-) (NHMB, 70% ethanol); 1 ♀, same but -17.8882, -46.9213, 630 m, 7.iii.2019 (D.L. Queiroz), #922(-) (NHMB, 70% ethanol); 4 ♁, 3 ♀, same but -17.8871, -46.9208, 720 m, 12.vii.2018, degraded cerrado vegetation, Machaerium amplum (D.L. Queiroz) #2 (NHMB, 70% ethanol); 7 ♁, 5 ♀, 4 immatures, same but near source of Curtume river, -17.8883, -46.9200, 640–690 m, 13–14.vii.2012, degraded Cerrado vegetation, Senna pendula (D. Burckhardt & D.L. Queiroz), #40(2) (NHMB, slide mounted, 70% ethanol); 1 ♀, Vazante, Fazenda Bocaina, Grota da Bocaina, -17.8900, -46.9150, 670–710 m, 22.ix.2011, Cerrado (D. Burckhardt & D.L. Queiroz), #18(-) (NHMB, 70% ethanol).— Piauí: 1 ♀, Teresina, parque municipal, -5.0581, -42.8106, 70 m, 27.xii.2014 (M. R. Barreto), #29 (NHMB, 70% ethanol).
Diagnosis. Head and thorax medium to dark brown, strongly contrasting from whitish to light yellow abdomen and yellowish forewings; striped-pattern very fine or present as scattered spots. Paramere, in lateral view, lamellar; apex rounded or squarish, directed posteriorly. Aedeagus complex tripartite; in lateral view, lateral lobule subequal in size with median lobule, subtriangular; ventral process with apical expansion subequal in size with dorsal lobe, oblong-oval.
Description. Colouration. Body with whitish or yellowish striped-pattern; variation: stripes very fine or present as scattered spots; mesopraescutum sometimes with additional scattered spots; mesoscutum sometimes with additional markings laterally; abdominal tergites lacking distinct striped-pattern. Head and thorax medium brown to dark brown; genal process dark yellow to medium brown. Eye grey to dark red; ocelli colourless. Antenna light yellow, segments 1–2 medium brown. Clypeus dark yellow, slightly lighter medially and slightly darker along edges; rostrum dark yellow. Thorax with margins of sclerites slightly darker. Mesopraescutum. Forewing yellowish, yellow around Cu 1b and slightly around M 1+2, M 3+4 and Cu 1a; veins light yellow; pterostigma concolorous or slightly lighter than veins. Hindwing colourless. Fore- and midleg dark yellow, hindleg light yellow. Abdomen whitish to light yellow; intersegmental membranes concolorous with rest of abdomen; spiracular sclerites concolorous with tergites. Male terminalia irregularly light yellow. Female terminalia whitish to light yellow, proctiger usually dark yellow apically and around anus.
Structure. Body length ♁ 2.1–2.4 mm (2.22± 0.16 mm), ♀ 2.3–2.7 mm (2.48± 0.25 mm) (4 ♁, 2 ♀). Genal pro-cess (Fig. 152) expanded, rarely subconical, irregularly narrowing towards subacute, narrowly or broadly rounded apex, 0.5–0.7 times as long as vertex along midline. Antenna 2.4–2.7 times as long as head width; longest terminal seta about as long as segment 10. Apical labium segment 0.1 times longer than head width and 0.5–0.6 times longer than median segment. Forewing (Fig. 182) 2.6–2.8 times as long as head width, 2.0–2.3 times as long as wide, obovoid or suboval, narrowly rounded apically; vein M+Cu 1 0.3–0.4 times as long as Cu 1; ratio a/b 1.3–1.6; ratio c/d 0.8–0.9; ratio e/f 0.4–0.7. Surface spinules distinctly (Fig. 38) to moderately (Fig. 39) spaced, forming rhomboids; covering apical half of cells r 1 and r 2, absent or much reduced around radular areas of cells m 1, m 2 and cu 1, and m 2 basally, covering most of cell cu 2; leaving spinule-free spaces along veins (Fig. 42). Radular spinules sometimes present in r 2 but inconspicuous. 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, weakly tapered to blunt, weakly down-curved posterior lobe. Paramere, in lateral view (Figs 250 ‾252) 0.8 times as long as proctiger; lamel-lar; anterior margin strongly rounded apically, almost straight before apex; posterior margin expanded in apical third, slightly to strongly sinuous in basal two thirds; apex rounded or squarish, directed posteriorly; inner surface (Fig. 251) covered with long setae, longer 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. 302), bearing large posterior tooth. Aedeagus (Fig. 252) complex tripartite; in lateral view, dorsal lobe with slightly prominent median lobule; lateral lobule subequal in size with median lobule, subtriangular; membranous pouch rather broad; ventral process weakly upturned, with apical expansion subequal in size with dorsal lobe, oblong-oval, bearing long, conical tubercle.—Female (Fig. 332). Proctiger, in lateral view, 0.9 times as long as head width; dorsal outline weakly to strongly concave distal to circumanal ring, apical extension almost straight to slightly sinuous, apex strongly upturned, strongly obliquely or transversally truncate; circumanal ring 0.3 times as long as proctiger. Subgenital plate, in lateral view, 0.6 times as long as proctiger; apex well-developed; ventral outline almost straight to slightly sinuous, sometimes slightly notched submedially or subapically; covered with medium long setae in submedian quarter and ventrally throughout, short setae in apical half, long setae at apex, and group of long setae on dorsum subapically and submedially, without seta-free patch subapically; in ventral view (Fig. 362), lateral margins evenly, weakly narrowing towards narrow, subtruncate apex.
Measurements (in mm) (4 ♁, 3 ♀). HW ♁ 0.57–0.69 (0.62±0.05), ♀ 0.62–0.67 (0.65±0.02); AL ♁ 1.52–1.74 (1.59±0.1), ♀ 1.47–1.69 (1.61±0.12); LAB2 ♁ 0.13–0.15 (0.14±0.01), ♀ 0.14–0.15 (0.14±0.01); LAB3 ♁ 0.07– 0.08 (0.08±0.01), ♀ 0.07–0.08 (0.08±0.01); FL ♁ 1.61–1.81 (1.67±0.1), ♀ 1.74–1.84 (1.78±0.05); TL ♁ 0.39– 0.47 (0.42±0.03), ♀ 0.43–0.45 (0.44±0.01); MP 0.24–0.26 (0.25±0.01); PL 0.20–0.21 (0.21±0.01); DL 0.26–0.30 (0.28±0.03); FP 0.57–0.60 (0.58±0.02).
Etymology. From Greek μελανóς = black and θώρακας = thorax, referring to its conspicuously dark head and thorax.
Distribution. Brazil: Mato Grosso, Minas Gerais, Piauí.
Host-plant. Machaerium cf. ruddianum C.V. Mendonça & A.M.G. Azevedo (Leguminosae, Papilionoideae, Aeschynomeneae). Adults were collected on Machaerium amplum Benth. (Leguminosae, Papilionoideae, Aeschynomeneae) which is a likely host. A series of adults and immatures is labelled to be from Senna pendula (Willd.) H.S.Irwin & Barneby (Leguminosae, Caesalpinioideae, Cassieae); this is a mistake and Senna is not a host.
Habitat. Cerrado, eucalypt plantation, transitional forest (Cerrado/Amazonian), forest edges, farmland, parks.
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 75-76, DOI: 10.11646/zootaxa.4887.1.1, http://zenodo.org/record/4297565