Taxonomy and host-plant relationships of the psyllid genus Mitrapsylla (Hemiptera: Psylloidea: Psyllidae) in Brazil Author Rendón-Mera, Diana Isabel Author Burckhardt, Daniel Author Cavichioli, Rodney R. Author Queiroz, Dalva L. text Zootaxa 2020 2020-11-30 4887 1 1 100 journal article 9451 10.11646/zootaxa.4887.1.1 dd97793c-f4a6-4204-a111-c112533f9b06 1175-5326 4297565 B9A17D69-EBE7-49F4-AB01-54CA617FED02 Mitrapsylla truncata sp. nov. ( Figs 130 , 160 , 190 , 274 ‾276, 310, 340, 370, 380) LSID: urn:lsid:zoobank.org:act: DDDC418E-FA25-43B7-B4D9-6CA4475CE8BB Material examined. Holotype ♁, Brazil : Minas Gerais , Lavras , -21.2333 , -45.0000 , 900 m , 1–6.vi.2010 edge of Atlantic forest around coffee plantation mixed with pastures ( D. Burckhardt ), #1(-) ( DZUP 215436 , dry). Paratypes . Minas Gerais : 1 ♁, 1 ♀ , same data as holotype ( D. Burckhardt ), #1(-) ( DZUP , NHMB , dry) .— Paraná : 1 ♁, Colombo , Embrapa Florestas , -24.8526 , -48.7147 , 850 m , 11.ii.2014 , Andira fraxinifolia (D.L. Queiroz) , #590 ( NHMB , 70% ethanol); 1 ♁, 2 ♀ , same but ( D.L. Queiroz ), #594 ( NHMB , 70% ethanol); 1 ♁, Mor-retes, BR277 , Cachoeira , -25.4769 , -48.8339 , 28.xi.2012 , Atlantic forest , Andira fraxinifolia (D. Burckhardt & D.L. Queiroz) , #80(1) ( NHMB , slide mounted) .— São Paulo : 1 ♀ , Casa Branca , -21.8206 , -47.0653 , 680 m , 5.iv.2019 , edge of citrus grove, Machaerium hirtum (D. Burckhardt & D.L. Queiroz) , #315(6) ( NHMB , 70% ethanol) . Diagnosis. Body usually multi-coloured. Paramere, in lateral view, sublanceolate; anterior margin almost straight throughout; posterior margin slightly convex with subapical indentation; apex irregularly rounded. Aedeagus complex unipartite; in lateral view, dorsal lobe small, irregularly oval; ventral process with apical expansion larger than dorsal lobe. Female proctiger, in lateral view, with apex straight, irregularly rounded. Female subgenital plate, in lateral view, with apex strongly truncate; ventral outline strongly expanded, apex slightly straight; with group of long setae on dorsum subapically, without seta-free patch subapically; in ventral view, apex subtruncate. Description. Colouration. Body with white striped-pattern; variation: older specimens with markings with dark outline. Head and thorax yellow to dark reddish-brown. Gena anteriorly sometimes darker anteriorly and darker to brown ventrally; genal process lighter than head. Eye red to dark red; ocelli orange. Antenna yellow, segments 1–2 concolorous with head. Clypeus dark yellow to brownish, slightly lighter medially and darker along edges; rostrum light to dark yellow. Thorax sometimes brown lateroventrally, with margins of sclerites slightly darker. Mesopraescutum sometimes with posterior half irregularly coloured. Forewing yellowish, yellow around Cu 1b ; veins light yellow; pterostigma concolorous or slightly lighter than veins. Hindwing colourless. Foreleg, midleg and metafemur dark yellow, hindleg and sometimes apex of metafemur light yellow. Abdomen dark yellow to orange, sometimes darker to brown ventrally; intersegmental membranes light straw-coloured; spiracular sclerites concolorous with ventrites. Male terminalia irregularly light yellowish-brown, proctiger lighter posteriorly and subgenital plate dark-er. Female terminalia irregularly light yellow, proctiger brownish apically. Structure. Body length ♁ 2.5 mm ♀ 2.6 mm (1 ♁, 1 ♀ ). Genal process ( Fig. 160 ) expanded, irregularly or evenly narrowing towards subacute or narrowly rounded apex, 0.5 times as long as vertex along midline. Antenna 2.7 times as long as head width; longest terminal seta slightly shorter than segment 10. Apical labium segment 0.2 times longer than head width and 0.7 times longer than median segment. Forewing ( Fig. 190 ) 2.8 times as long as head width, 2.2 times as long as wide, obovoid, broadly rounded apically; vein M+Cu 1 0.3 times as long as Cu 1 ; ratio a/b 1.6; ratio c/d 0.9; ratio e/f 1.0. Surface spinules moderately spaced, forming rhomboids ( Fig. 39 ); 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 , and around Cu 2 ; leaving spinule-free spaces along veins ( Fig. 42 ). Radular spinules sometimes present in r 2 but inconspicuous. Metatibia 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 274 ‾276) 0.8 times as long as proctiger; sublanceolate; ante-rior margin almost straight throughout; posterior margin slightly convex with subapical indentation; apex irregularly rounded; inner surface ( Fig. 275 ) covered with long setae, with row of thick setae along apical anterior margin, group of thick setae below sclerotised ridge and along posterior margin; in dorsal view ( Fig. 310 ), apex sclerotised. Aedeagus ( Fig. 276 ) complex unipartite; in lateral view, dorsal lobe small, irregularly oval; ventral process strongly upturned, with apical expansion larger than dorsal lobe, subglobular, bearing long, conical tubercle.—Female ( Fig. 340 ). Proctiger, in lateral view, 0.9 times as long as head width; dorsal outline moderately to strongly concave distal to circumanal ring, apical extension almost straight, apex straight, irregularly rounded; circumanal ring 0.4 times as long as proctiger. Subgenital plate, in lateral view, 0.4 times as long as proctiger; apex strongly truncate; ventral outline strongly expanded, apex slightly straight; covered with medium long setae except in very base, and shorter setae in apical third, very long setae at apex, with group of long setae on dorsum subapically, without seta-free patch subapically; in ventral view ( Fig. 370 ), lateral margins unevenly, weakly narrowing at apical fourth towards broad, subtruncate apex. Measurements (in mm) (1 ♁, 1 ♀ ). HW ♁ 0.66; AL ♁ 1.76; LAB2 ♁ 0.20; LAB3 ♁ 0.14; FL ♁ 1.88; TL ♁ 0.56; MP 0.26; PL 0.20; DL 0.28; FP 0.57. Etymology. From Latin truncare = to cut off, referring to the truncate female subgenital plate. Distribution. Brazil : Minas Gerais , Paraná , S„o Paulo. Host-plant. Unknown. Habitat. Atlantic forest, around coffee plantation mixed with pastures. Comments. Female of M. truncata sp. nov. can be distinguished from other species of the genus by the subgenital plate strongly truncate, with ventral outline, in lateral view, strongly and smoothly convex, and the apex of proctiger straight.