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A new species of Egidemia China, 1927, Egidemia impudica, is described and illustrated from the Department of Magdalena (Colombia). The male genitalia of the new species have a very peculiar, diagnostic feature: the pygofer is considerably reduced and truncate posteriorly, so that part of the aedeagus is exposed. A key to males of all known Egidemia species is provided. Notes comparing Egidemia impudica with the other nine known species of the genus are also given.
Auchenorrhyncha, Colombia, identification key, leafhopper, Proconiini, taxonomy
The sharpshooter genus Egidemia China, 1927 currently includes nine species (
We describe herein a remarkable new Egidemia species from Colombia (Department of Magdalena). The description is based on the material that
Techniques for preparation of the male genital structures follow
Genus Egidemia China, 1927
urn:lsid:zoobank.org:act:3AB00DB0-9D69-4B29-A19D-D70212713323
http://species-id.net/wiki/Egidemia_impudica
Figs 1 – 10Length, 11.5 mm (male paratype, 12 mm) including wings in repose. Head (Fig. 2), in dorsal view, well produced anteriorly; median length of crown approximately seven-tenths interocular width and four-tenths transocular width. Crown (Fig. 2), in dorsal view, with anterior margin broadly rounded; without carina at transition from crown to face; without median fovea; ocelli located slightly behind imaginary line between anterior angles of eyes, each ocellus closer to adjacent eye angle than to median line of crown; without longitudinal keel laterad of each ocellus; with broad M-shaped elevation bordering posterior margin; with pubescence; frontogenal sutures extending onto crown and approaching ocelli; coronal suture distinct. Antennal ledges (Fig. 2), in dorsal view, protuberant; in lateral view (Fig. 3), with dorsal carina, anterior margin strongly declivous and with concavity. Face (Fig. 3) pubescent, especially on inferior portions; frons convex, swollen, muscle impressions distinct, median portion granulate; epistomal suture incomplete medially; clypeus not produced, its contour continuing profile of frons.
Figure 1. Egidemia impudica sp. n. Male holotype (IAHC), body in dorsal view (antennae and legs not depicted, abdomen removed for dissection). Length, 11.5 mm.
Thorax (Fig. 2), in dorsal view, with pronotal width less than transocular width of head; pronotum with lateral margins slightly sinuous and slightly divergent anteriorly; pronotal surface rugose and punctate (except on anterior third) and pubescent; posterior margin distinctly concave; dorsopleural carinae (Fig. 3) complete, slightly arched downward anteriorly, strongly declivous posteriorly. Mesonotum (Fig. 2) with scutellum only very slightly striate. Forewings (Fig. 4) mostly hyaline with large sclerotized area extending mainly over outer discal cell, outer and median anteapical cells and adjacent portions of costal margin; veins elevated and distinct; claval veins fused through most of their length, separated only basally and apically; outer discal cell reduced, about half length of inner discal cell; with three closed anteapical cells (inner one broadened anteriorly) and four apical cells, base of fourth more proximal than base of third; without anteapical plexus of veins and without supernumerary anteapical cross veins to costal margin. Hindwings extending almost as far posteriorly as forewings; vein R2+3 incomplete. Hindleg with femoral setal formula (visible only on right leg of holotype) 2:1:1:1 (with additional, unaligned slender seta located anteriorly to the row of three setae; this additional seta absent in the male paratype); length of first tarsomere less than combined length of second and third ones; first tarsomere with two parallel rows of small setae on plantar surface.
Figures 2–4. Egidemia impudica sp. n. 2 crown, pronotum and mesonotum, dorsal view (the white circle on the mesonotum is the pin perforation) 3 anterior portion of body, lateral view 4 left forewing.
Color. Anterior dorsum (Figs 1–3) mostly brown. Crown with three maculae anteriorly (median one elongate), outer portion of antennal ledges, macula adjacent to inner eye margin, area around ocelli, and elongate macula from posterior margin to interocellar portion, pale yellow; inner portion of antennal ledges and pair of conspicuous maculae on posterior coronal margin, dark brown. Pronotum with irregular maculae on anterior third, five distinct, transversely aligned maculae on median third and pair of maculae on posterior third at lateral margins, pale yellow. Mesoscutum with median macula basally, pair of maculae basilaterally, and pair of irregular areas medially, pale yellow; mesoscutellum with pair of maculae basally and macula on apical portion, pale yellow. Forewings (Figs 1, 4) mostly translucent with brown veins; small brown area along basal portion of costal margin; distal half of costal margin, outer discal cell, outer anteapical cell, median anteapical cell, and part of inner anteapical cell brown (mostly darker than other wing portions); outer discal, outer anteapical, and median anteapical cell each with distinct orange macula; additional orange macula on costal area adjacent to anterior limit of outer anteapical cell; additional irregular yellow to orange marks also present in this area; apical cells brown. Body (Fig. 3), in lateral view, with broad yellow area extending from lateral portions of frons to posterior limit of thorax, bordered inferiorly by irregular brown marks. Face (Fig. 3) mostly pale yellow; muscle impressions and diffuse area on median portion of frons, brown to dark brown.
Male genitalia with pygofer (Fig. 5), in lateral view, short, considerably reduced posteriorly, exposing aedeagal shaft; posterior margin obliquely truncate; ventroapical portion with conspicuous long process directed mesally; in caudal view (Fig. 7), processes crossing each other medially; pygofer surface with small setae distributed mostly ventrally and on posterior half. Valve (Fig. 8), in ventral view, with short lateral margins; posterior margin distinctly produced posteriorly. Subgenital plates (Fig. 8), in ventral view, triangular, narrowing gradually toward apex; not fused to each other, close to each other for short distance on basal portion and then with distinct space between inner margins; surface with many scattered small setae; in lateral view (Fig. 5), plates extending beyond pygofer apex, with small dentiform projection associated with style apical portion. Connective (Fig. 9), in dorsal view, broadly Y-shaped with both arms and stalk short; with short median keel. Styles (Fig. 9), in dorsal view, elongate, extending posteriorly distinctly beyond apex of connective, portion before connective approximately of same size as portion behind it; apical portion directed posteriorly, not distinctly curved; apex obtuse. Aedeagus (Fig. 10) symmetrical; shaft, in lateral view, simple, directed dorsally, lobulate apically; dorsal and ventral margins sinuous; gonopore located on apex. Paraphyses absent. Anal tube (Figs 5, 6), in dorsal view, strongly developed in comparison to pygofer size; segment X (Fig. 5), in lateral view, longer than dorsal pygofer margin, expanded toward apex; in dorsal view (Fig. 6), broad, distinctly rounded.
Figures 5–10. Egidemia impudica sp. n., male genitalia 5 genital capsule, lateral view (arrow indicates the exposed aedeagus) 6 pygofer and anal tube, dorsal view (arrow indicates the expanded segment X of the anal tube) 7 pygofer, caudal view 8 valve and subgenital plates, ventral view 9 connective and right style, dorsal view 10 aedeagus, lateral view.
unknown.
Colombia, Magdalena Department. Male holotype (IAHC) with labels “COLOMBIA Magdalena \ PNN Tayrona Zaino \ 11°20'N, 74°2'W 50 m” and “Malaise 7/17/00-7/28/00 \ R. Henriquez, leg. M.299”. Male paratype (MNRJ) with same data as holotype, excepting “6/14/00-6/29/00” and “M.240”.
The new species name, impudica, refers to the distinctly reduced male pygofer, which results in the partial exposure of the aedeagus.
Considering the known species of Egidemia, the new taxon appears to be most similar to Egidemia inflata,
both in the color pattern (especially the maculae of the pronotum and
forewings) and in certain aspects of the male genitalia (aedeagus,
styles, and inner margin of the subgenital plates). Egidemia inflata is recorded from Mexico and Belize (
Figures 11–13. Egidemia inflata Young, 1968 11 pygofer, lateral view (arrow indicates the process) 12 apical portion of pygofer, caudoventral view 13 aedeagus, lateral view. These figures, redrawn from
1 | Aedeagus with processes | 2 |
– | Aedeagus without processes | 6 |
2 | Aedeagus with symmetrical processes | 3 |
– | Aedeagus with asymmetrical processes ( |
Egidemia proxima (Melichar, 1925) (Mexico) |
3 | Aedeagus, in lateral view, with distinct curved lobe arising dorsoapically above pair of strong spiniform processes ( |
Egidemia gracilis Schröder, 1972 (“Amaz.” [Amazon region]) |
– | Aedeagus, in lateral view, without such dorsoapical lobe | 4 |
4 | Pygofer processes arising dorsoapically ( |
5 |
– | Pygofer processes arising ventrally; pygofer, in lateral view, curved dorsally and with truncate apex ( |
Egidemia obtusata (Melichar, 1925) (Peru) |
5 | Styles, in dorsal view, slightly
expanded apically; aedeagal processes, in caudoventral view, very
short, their length not more than four times their width ( |
Egidemia paranceps Young, 1968 (Costa Rica, Nicaragua, Panama) |
– | Styles, in dorsal view, not expanded
apically; aedeagal processes, in caudoventral view, with length many
times their greatest width ( |
Egidemia anceps (Fowler, 1899) (Mexico, Guatemala, Panama) |
6 | Pygofer, in lateral view, short, partially exposing aedeagus (Fig. 5), ventroapical margins with pair of elongate processes that cross each other medially (Figs 5, 7) | Egidemia impudica sp. n. (Colombia) |
– | Pygofer, in lateral view, elongate, not exposing aedeagus, ventroapical margins without pair of elongate processes that cross each other medially | 7 |
7 | Aedeagus, in lateral view, with shaft rectilinear ( |
Egidemia peruana Carpi and Mejdalani, 2010 (Peru) |
– | Aedeagus, in lateral view, with shaft curved dorsally ( |
8 |
8 | Pygofer process branched ( |
Egidemia fowleri (Distant, 1908) (Mexico) |
– | Pygofer process not branched (but may bear small teeth) | 9 |
9 | Aedeagus, in lateral view, narrowest in apical half of its length ( |
Egidemia speculifera (Walker, 1851) (Brazil, Paraguay, Argentina) |
– | Aedeagus, in lateral view, inflated, broadest in apical half of its length (Fig. 13); posterior pygofer margin, in lateral view, forming broad process directed dorsally (Fig. 11) | Egidemia inflata Young, 1968 (Mexico, Belize, Cuba [?]) |
* Note. There is a mistake in the numbers of Egidemia figures in Young’s (1968) paper. The aedeagi of Egidemia speculifera and Egidemia proxima had their numbers exchanged. Figure 168f is actually Egidemia proxima, instead of Egidemia speculifera as given in his legend, whereas figure 169f is Egidemia speculifera (Egidemia proxima in the legend).
The manuscript benefited from the useful comments of Márcio Felix and Rachel Carvalho. The loan of the specimens herein described was kindly arranged by Paul Freytag and Daniela Takiya. The photograph of the body in dorsal view was taken and edited by Rachel Carvalho. This study was in part supported by the Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro – FAPERJ (grant number E-26/171.281/2006 to Márcia Couri). The undergraduate junior author received a fellowship from FAPERJ (process number E-26/100.524/2010).