Acrogonia luizi, Silva & Cavichioli & Takiya & Mejdalani, 2018

Silva, Roberta Dos Santos Da, Cavichioli, Rodney R., Takiya, Daniela M. & Mejdalani, Gabriel, 2018, Descriptions of seven new Acrogonia species from South America (Hemiptera: Cicadellidae: Cicadellinae: Proconiini), Zootaxa 4374 (3), pp. 375-394 : 385-387

Acrogonia luizi sp. nov.

( Figures 52–66 )

Total length. Male holotype 9.8 mm; female paratypes 10.5 mm (n = 4).

Holotype description. Head and thorax. Structural features of head and thorax much as described above for A. falcata sp. nov., except crown length approximately 9/10 interocular width.

Color. Crown ( Fig. 52 ) yellowish-green with dark brown to black lines on coronal, frontogenal, and temporal sutures, with pair of irregular dark brown to black stripes parallel to anterior margin and joining each other apically; pronotum ( Fig. 52 ) with anterior portion yellowish-green, remainder mostly yellow; mesonotum ( Fig. 52 ) brownish-green with pair of basal, dark brown to black markings with yellow borders; apex yellow. Forewing mostly greenish-yellow, except apical membranous area. Face and lateral and ventral portions of thorax ( Fig. 53 ) mostly yellow; superior portion of frons, dorsolateral carina of pronotum [dorsopleural carina sensu Young 1968], mesepisternum, and mesepimeron with irregular dark brown stripe; labium, labrum, and legs ( Fig. 53 ) mostly yellowish-brown.

Male genitalia. Pygofer ( Fig. 54 ), in lateral view, strongly produced posteriorly and ventrally. Subgenital plate ( Fig. 55 ), in ventral view, subtriangular; basal half expanded laterally, then tapering gradually towards distal half; latter narrow, appearing articulated with basal half; in lateral view, plate not extending as far posteriorly as pygofer apex, distal half directed dorsally, forming angle with basal half. Connective ( Fig. 56 ), in dorsal view, T-shaped; stalk narrow, with dorsal median keel, expanded apically; arms robust. Style ( Fig. 56 ), in dorsal view, extending posteriorly farther than apex of connective, attaining base of distal half of subgenital plate; with preapical lobe; apex acute. Aedeagus ( Fig. 57 ) symmetrical; shaft, in lateral view, broad basally and with small dorsal projection; apex bifid, with pair of conspicuous, elongate slender hook-like processes. Anal tube ( Fig. 58 ) without processes; basal apodemes directed ventrally.

Female. Genitalia. Sternite VII ( Figs. 59–60 ) bilobed; posterior margin with deep median emargination.

Pygofer, in lateral view, produced posteriorly; apex obtuse. Valvifer I ( Figs. 61–62 ), in ventral view, expanded apically, with posterior margin truncate. Valvula I ( Figs. 61–62 ), in ventral view, with basal portion (BCR) strongly curved outwards; in lateral view, without ventral projection or lobe; basal half with small dorsal lobe (DLB); ventral interlocking device (VID) short, located on basal half of blade; dorsal sculptured area ( Figs. 63–64 ) extending from basal portion of blade to apex, formed mostly by scale-like processes arranged in oblique lines; ventral sculptured area ( Fig. 66 ) restricted to apical portion, formed mostly by scale-like processes; blade apex acute, dentiform ( Figs. 61, 64 ). Valvula II, in lateral view, with dorsal margin convex; preapical prominence strong and apex obtuse, apical margin between them concave; about 18 teeth distributed continuously on posterior 3/4 of dorsal margin, most teeth triangular with ascending portion (= anterior edge) short, descending portion (posterior edge) long; blade with ducts extending to apical portion and to teeth or terminating below latter. Gonoplac, in lateral view, with basal half narrow and apical half distinctly expanded; apex obtuse.

Intraspecific variation. The disc of the pronotum varies from yellow to dark green, whereas the forewings vary from greenish-yellow to dark green. Some variation may be due to fading of coloration in preserved specimens.

Etymology. The new species name, luizi , is given in honor of our colleague and friend Mr. Luiz A. A. Costa (Departamento de Entomologia, Museu Nacional, UFRJ, Rio de Janeiro) in recognition of his contribution to our knowledge of the mirids, tingids, and other heteropterans.

Type material. Holotype: male, “ EQUADOR, [province of] Pastaza \ Rio Shiripuno. Shiripuno \ Lodge Mirador 350. Mnm \ 25 2009 51°04.830’ [?] w76° \ 44.713’ Hg - Vapor Geert \ Goemans Col.” ( QCAZ) . Paratypes: one female, “AM [state of Amazonas] - Manaus \ R. [Reserva] Ducke \ 14-18.xi.2009 \ O. Evangelista col.” ( MNRJ) ; three females, “ BRASIL: Amazonas, Barcelos, \ R. [Rio] Aracá , boca do R. [ Rio ] Curuduri \ 00.09734°S 063.28952°W \ 15-18.VI.2010 light\ Takiya & Cavichioli leg.” ( DZRJ, MNRJ) .

Figures

FIGURES52–58. Acrogonialuizi sp. nov. 52, body, male holotype (QCAZ),dorsal view (total length 9.8mm); 53, body,male holotype, lateral view; 54–58, male genitalia:54, pygofer, lateral view; 55, valve and subgenital plates, ventral view; 56, styles and connective, dorsal view; 57, aedeagus, lateral view; 58, anal tube, lateral view. Scale bars: 54 = 1 mm; 55–58 = 0.5 mm.

FIGURES 59–66. Acrogonia luizi sp. nov., female genitalia: 59–60, sternite VII, ventral view (macerated and unmacerated specimen, respectively); 61, valvifer Iand valvula I,lateral view (the valvifer is dislocated anterad); 62, valvifers I and valvulae I, ventral view; 63, dorsal sculptured area; 64, apex of valvula I; 65, basal portion of valvula I showing ventral interlocking device; 66, ventral sculptured area.Scale bars:59 = 1 mm;61–62 = 0.5mm.BCR = basal curvature; DLB = dorsal lobe;VID = ventral interlocking device.