Taxonomic revision and phylogeny of the sharpshooter genus Dasmeusa Melichar, 1926, with a scanning electron microscopy study of D. pauperata (Fabricius, 1803) (Hemiptera: Cicadellidae: Cicadellini) Author Pecly, Nathalia H. https://orcid.org/0000-0003-0083-0592 Programa de Pos-graduacao em Zoologia, Museu Nacional, Universidade Federal do Rio de Janeiro, Quinta da Boa Vista, Sao Cristovao, Rio de Janeiro, RJ, Brasil Author Takiya, Daniela M. https://orcid.org/0000-0002-6233-3615 Departamento de Entomologia, Museu Nacional, Universidade Federal do Rio de Janeiro. 20940 - 040, Rio de Janeiro, RJ, Brasil Author Cavichioli, Rodney R. https://orcid.org/0000-0001-5996-0629 Departamento de Zoologia, Instituto de Biologia, Universidade Federal do Rio de Janeiro. Caixa Postal 68044, 21941 - 971, Rio de Janeiro, RJ, Brasil Author Mejdalani, Gabriel https://orcid.org/0000-0003-4513-243X Departamento de Entomologia, Museu Nacional, Universidade Federal do Rio de Janeiro. 20940 - 040, Rio de Janeiro, RJ, Brasil mejdalani@mn.ufrj.br text Arthropod Systematics & amp; Phylogeny 2023 2023-08-01 81 655 687 http://dx.doi.org/10.3897/asp.81.e102848 journal article http://dx.doi.org/10.3897/asp.81.e102848 1864-8312-81-655 9CF1B5253D104516A1B6DA386F4C48DF 9B999251BA8353B2B97922F2C22E4331 3.1.4.1. Dasmeusa basseti Cavichioli & Chiamolera, 1999 Figs 1A , 2A-I Length. ♂ paratypes 8.8-9.2 mm (n = 2); ♀ paratype 9.6 mm; ♂♂ 8.8-9.2 mm (n = 3). Head (Figs 1A , 2A ): in dorsal view, well produced anteriorly; median length of crown approximately 7/10 of interocular width and 4/10 of transocular width; anterior margin rounded; ocelli large, located approximately on imaginary line between anterior eye angles; surface of crown concave; antennal ledge, in dorsal view, not protuberant. Thorax (Figs 1A , 2A ) with pronotum, in dorsal view, with width slightly greater than transocular width of head. Forewing with base of fourth apical cell approximately aligned with base of third; forewing of female, in rest position, exceeding apex of ovipositor. Figure 2. Dasmeusa basseti Cavichioli & Chiamolera, 1999. A - G Male. A head, pronotum, and mesonotum, dorsal view; B pygofer, lateral view; C subgenital plate, ventral view; D connective and style, dorsal view; E ejaculatory bulb and aedeagus, lateral view; F paraphyses, dorsal view; G paraphyses, lateral view; H - I female; H sternite VII, ventral view; I pygofer, lateral view. Coloration (Fig. 1A ). Head, pronotum, and mesonotum light brown; ocelli orange. Forewing pale yellow, translucid, with veins light brown, preapical area with irregular, orange transverse band. Face, lateral and ventral portions of thorax, and legs mostly light brown. Male terminalia. Pygofer (Fig. 2B ), in lateral view, with posterior margin obliquely truncate superiorly and rounded inferiorly, apex obtuse; macrosetae distributed mostly on posterior half but some located more anteriorly. Subgenital plate (Fig. 2C ), in ventral view, with basal half broad and distal half very narrow; with elongate uniseriate macrosetae on basal half, microsetae distributed along outer lateral margin. Connective (Fig. 2D ), in dorsal view, T-shaped; stalk carinate dorsally, subequal in length to one arm width. Style (Fig. 2D ), in dorsal view, slender, elongate, extending posteriorly beyond apex of connective; apex narrow, directed ventrally, truncate. Aedeagus (Fig. 2E ) symmetrical; shaft short; whole ventral margin of shaft produced into strong, slightly bifid process directed ventrally, posterior margin of process smooth; gonoduct distinct, curved, gonopore located apically. Paraphyses slightly asymmetrical, elongate, extending well beyond subgenital plate apex; stalk shorter than rami; in dorsal view (Fig. 2F ), rami fused to each other along their basal halves, each bifurcate at apex; in lateral view (Fig. 2G ), stalk arched dorsally, rami directed dorsally, narrower along apical half. Female. Terminalia with sternite VII (Fig. 2H ), in ventral view, with posterior margin narrowly rounded. Pygofer (Fig. 2I ), in lateral view, with posterior margin narrowly rounded; macrosetae distributed on posterior portion and extending anteriorly along ventral margin. Valvula I, in lateral view, with ventral interlocking device located on basal third of blade. Valvula II, in lateral view, with about 47 non-contiguous teeth. Material examined. French Guiana [ new record ] • 1 ♂ : "FRENCH GUIANA: Laussat \ P3 \ 05°28′31.6″N - 053°35′07.3″W \ 30.IX.2010 \ Lamarre G. Leg "; "White sand forest \ Vitre trap (V 7)" (DZRJ) • 1 ♂ : "FRENCH GUIANA: Montagne \ des Chevaux \ 4°44'56″N - 52°26'28″W , alt. 75 m \ 14.viii.2011 \ Malaise trap \ SEAG col." (DZRJ) • 1 ♂ : "FRENCH GUIANA: Montagne \ des Chevaux \ 4°44'56″N - 52°26'28″W , alt. 75 m \ 09.viii.2011 \ window trap \ SEAG col." (MNRJ) • 1 ♂ : "FRENCH GUIANA: Montagne \ des Chevaux \ 4°44'56″N - 52°26'28″W , alt. 75 m \ 24.iii.2012 \ Malaise trap \ SEAG col." (MNRJ). Guyana • 1 ♂ paratype : "#CICA00476 \ Pentaclethra macroloba [host-plant] \ Camoudi 11-03-1997 "; "Hand collecting/beating \ Station 2616 \ Seed/Sapl/Tree"; "Mabura Hill \ GUYANA \ Y. Basset , Coll." (DZUP) • 1 ♂ : "#CICA 076 \ Pentaclethra macroloba \ Camoudi 21/4/1997 "; "Hand collecting/beating \ Station 6069 \ Seed/Sapl/Tree"; "Mabura Hill \ GUYANA \ Y. Basset Coll. "; "3193" (DZUP) • 1 ♂ paratype : "#CICA00476 \ Catostemma fragrans [host-plant] \ Camoudi 11-3-1997 "; "Hand collecting/beating \ Station 4126 \ Seed/Sapl/Tree"; "Mabura Hill \ GUYANA \ Y. Basset , Coll." (DZUP) • 1 ♀ paratype : "#CICA00476 \ Catostemma fragrans \ Camoudi 9-05-1997 "; "Hand collecting/beating \ Station 3557 \ Seed/Sapl/Tree"; "Mabura Hill \ GUYANA \ Y. Basset , Coll." (DZUP) • 1 ♀ paratype : "#CICA 076 \ Catostemma fragrans \ Camoudi 24-10-1997 "; "Hand collecting/beating \ Station 2476-1 \ Seed/Sapl/Tree"; "Mabura Hill \ GUYANA \ Y. Basset , Coll."; "9864" (DZUP) • 1 ♀ paratype : same data as preceding except " 29-11-1996 " ; "Station 3273"; "2572" (DZUP) • 1 ♀ paratype : "#CICA 076 \ Eperua rubiginosa [host-plant] \ Camoudi 24-10-1997 "; "Hand collecting/beating \ Station 2551-2 \ On seedlings trees"; "Mabura Hill \ GUYANA \ Y. Basset , Coll."; "6916" (DZUP) • 1 ♂ paratype : "#CICA 076 \ Eperua rubiginosa \ Camoudi 16-9-1997 "; "Hand collecting/beating \ Station 4184 \ Seed/Sapl/Tree"; "Mabura Hill \ GUYANA \ Y. Basset , Coll."; "9556" (DZUP) • 1 ♀ paratype : same data as preceding except " 12-6-1997 " ; "Station 5473"; "6208" (DZUP) . Taxonomic notes. Cavichioli and Chiamolera (1999) considered the habitus of D. basseti (Fig. 1A ) similar to that of D. pauperata (Fig. 1H ), whereas they regarded the male terminalia similar to those of D. isabellina , mainly due to the shape of the aedeagus (Figs 2E , 5E ). However, D. basseti can be easily distinguished from these two species by the paraphyses (Fig. 2F, G ) with the rami fused to each other along their basal halves, each one bifurcate at apex.