Acrogonia lobulata, 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 : 387-389

Acrogonia lobulata sp. nov.

( Figures 67–80 )

Total length. Male holotype 10.6 mm; male paratypes 10.0– 10.5 mm (n = 5); female paratypes 11.0–12.0 mm (n = 8).

Holotype description. Head and thorax. Structural features of head and thorax much as described above for A. falcata sp. nov., except median length of crown slightly greater than interocular width and approximately 3/4 transocular width; posterior margin of pronotum strongly concave.

Color. Crown ( Fig. 67 ) greenish-brown with irregular yellow and brown markings; coronal and frontogenal sutures dark brown to black; lateral portions with dark brown to black lines associated with muscle impressions; pronotum ( Fig. 67 ) yellowish-green; mesonotum ( Fig. 67 ) brown with irregular yellow or dark brown markings. Forewing ( Figs. 67–68 ) mostly yellowish-green, except apical membranous area; latter with first apical cell and bases of apical cells 2–4 brown; corium with grey stripe along basal half of costal margin. Face and lateral and ventral portions of thorax ( Fig. 68 ), including labium, labrum, and legs, mostly yellow; superior portion of frons with large brown area; thorax with irregular brown stripe superiorly.

Male genitalia. Pygofer ( Fig. 69 ), in lateral view, strongly produced posteriorly; with conspicuous ventroapical lobe. Subgenital plate ( Figs. 70–71 ), in ventral view, subtriangular; base with lateral projection directed anteriorly (central emarginate area between pair of projections covered by valve); basal third slightly expanded laterally, then tapering gradually towards apex; latter strongly curved dorsally ( Fig. 71 ); plates fused to each other for most of their length; in lateral view, extending almost as far posteriorly as pygofer apex. Connective ( Fig. 72 ), in dorsal view, Y-shaped but with arms poorly developed, so that it looks somewhat linear; stalk elongate, narrow, with dorsal median keel, bifurcated apically. Style ( Fig. 72 ), in dorsal view, extremely elongate, extending posteriorly much farther than apex of connective, as far posteriorly as base of curved distal portion of subgenital plate; without distinct preapical or median lobe; apex acute. Aedeagus ( Figs. 73–74 ) symmetrical; shaft, in lateral view, curved dorsally, slender, tapering towards apex; in ventral view, with distal portion bifid. Anal tube ( Fig. 75 ) without processes; base with pair of slender filiform sclerites.

Female. Genitalia. Sternite VII ( Figs. 76–77 ) bilobed; posterior margin broadly concave, each lobe elongate, tapering gradually towards apex. Pygofer, in lateral view, produced posteriorly; apex obtuse. Valvifer I ( Figs. 78– 79 ), in lateral view, subtriangular. Valvula I ( Figs. 78–79 ), in ventral view, expanded basally; in lateral view, with conspicuous ventral lobe (VLB) along basal 2/3 and small dorsal lobe (DLB) on basal half; ventral interlocking device (VID) short, located on basal half of blade; dorsal sculptured area ( Fig. 80 ) extending from basal portion of blade to apex, formed mostly by scale-like processes arranged in oblique lines; ventral sculptured area restricted to apical portion, formed mostly by scale-like processes; blade apex ( Figs. 78, 80 ) acute, dentiform. Valvula II, in lateral view, with dorsal margin convex; preapical prominence strong and apex obtuse, apical margin between them subtruncate; with about only nine teeth distributed continuously on posterior half 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 color of the forewings varies from yellowish-green to green, or sometimes ferruginous. Some variation may be due to fading of coloration in preserved specimens.

Etymology. The name of the new species, lobulata , refers to the conspicuous ventroapical lobe of the male pygofer ( Fig. 69 ), as well as to the lobes of the first valvulae of the ovipositor ( Fig. 78 ).

Type material. Holotype: male, “ ECUADOR: [province of] ORELLANA \ Tiputini Biodiversity Station, nr. \ Yasuni National Park , 200- 250m. \ 00°37’55”S 76°08’39”W ”; “ 21-Oct-1998, Erwin \ transect T/9 T. L. Erwin \ et. al. fogging terra firme \ forest, lot#1988” ( EPNC) . Paratypes: one male, “ ECUADOR: ORELLANA Province,\ Reserva Étnica Waorani, Transect \ Ent., 1 km S. Onkone Gare Camp , \ 220 m 00°39’10”S 076°26’00”W ”; “ 3-Jul- 1994, T. L. Erwin, \ et. al. fogging, terra \ firme, lot#762” ( USNM) ; one male, same as preceding excepting “ 8-Feb- 1995 ” and “lot#951” (DZRJ); one male and one female, same as preceding excepting “ 9-Feb-1995 ” and “lot#985” (MNRJ); one male, same as preceding excepting “ 8-Oct-1995 ” and “lot#1269” (INHS); one male, same as preceding excepting “lot#1259” (EPNC); one female, same as preceding excepting “ 12-Jan-1994 ” and “lot#562” (USNM); one female, same as preceding excepting “ 8-Feb-1995 ” and “lot#969” (DZRJ); one female, same as preceding excepting “ 4-Feb-1996 ” and “lot#1411” (INHS); one female, same as preceding excepting “ 23-Jun- 1996 ” and “lot#1760” (EPNC); one female, same as preceding excepting “ 05-Jul-1998 ” and “lot#1899” (EPNC); one female, “ ECUADOR: ORELLANA \ Tiputini Biodiversity Station, nr. \ Yasuni National Park , 200- 250m. \ 00°37’55”S 76°08’39”W ”; “ 06-Feb-1999, Erwin \ transect T/8 T. L. Erwin \ et. al. fogging terra firme \ forest, lot#2078” ( EPNC) ; one female, same as preceding excepting “ 08-Feb-1999 ” and “lot#2037” (EPNC).

Figures

FIGURES67–75.Acrogonia lobulata sp. nov. 67, body, male holotype(EPNC),dorsal view (totallength 10.6 mm); 68, body, male holotype, lateral view; 69–75, male genitalia: 69, pygofer, lateral view; 70, subgenital plates, ventral view (valve not depicted); 71, subgenital plate, lateral view; 72, styles and connective, dorsal view; 73, aedeagus, lateral view; 74, aedeagus, ventral view; 75, anal tube, lateral view.Scale bars:69–72 = 1 mm; 75 = 0.5 mm; 73–74 = 0.3 mm.

FIGURES76–80. Acrogonialobulata sp. nov., female genitalia:76-77, sternite VII, ventral view (macerated and unmacerated specimen, respectively); 78, valvifer I and valvula I,lateral view; 79, valvifers I and valvulae I, ventral view; 80, apical portion of dorsal sculptured area.Scale bars: 76 = 1 mm; 78–79 = 0.5 mm.DLB = dorsallobe; VID = ventral interlocking device; VLB = ventral lobe.