Juliaca xanthogramma ( Signoret, 1854 )

Dos Santos, Alana C., Cavichioli, Rodney R., Takiya, Daniela M. & Mejdalani, Gabriel, 2018, Juliaca Melichar, 1926 (Hemiptera: Cicadellidae: Cicadellini): description of a new species from Southeastern Brazil and redescriptions of J. sertigerula (Jacobi, 1905) and J. xanthogramma (Si, Zootaxa 4472 (1), pp. 165-175: 172-174

publication ID

https://doi.org/10.11646/zootaxa.4472.1.9

publication LSID

lsid:zoobank.org:pub:01833B7E-81B1-48A5-85B0-6488D9E00E13

persistent identifier

http://treatment.plazi.org/id/E85D8798-FFC8-FFBA-FF07-BAD051A8BBB1

treatment provided by

Plazi

scientific name

Juliaca xanthogramma ( Signoret, 1854 )
status

comb. nov.

Juliaca xanthogramma ( Signoret, 1854)  comb. nov.

( Figures 31–45View FIGURES 31–36View FIGURES 37–44View FIGURES 45–46)

Tettigonia xanthogramma Signoret, 1854  : p. 9 [original description], pl. 1, fig. 6. Distribution: Brazil.

Microgoniella xanthogramma ( Signoret, 1854)  : Melichar 1951: p. 102 [redescription, new combination]. Distribution: Rio de Janeiro.

Length: male 5.8 mm (n = 1); female 6.2 mm (n = 1).

Head ( Figs. 31View FIGURES 31–36, 45View FIGURES 45–46), in dorsal view, well produced anteriorly, triangular; median length of crown approximately 6/10 of interocular width and 4/10 of transocular width; anterior margin subacute, without carina at transition from crown to face. Ocelli located at imaginary line between anterior eye angles, each approximately equidistant between median line of crown and adjacent anterior eye angle. Crown without transverse concavity before ocelli; antennal ledge, in lateral view, with anterior margin vertical and rectilinear. Face without distinct pubescence; frons slightly flattened medially, muscle impressions distinct; epistomal suture obsolete; clypeus, in lateral view, with profile continuing contour of frons.

Thorax ( Figs. 31View FIGURES 31–36, 45View FIGURES 45–46) with pronotal width approximately equal to transocular width of head; lateral margins of pronotum slightly convergent anteriorly, posterior margin concave; dorsolateral carina distinct, extending as far anteriorly as eye margin; disk without transverse rugae. Mesonotum with scutellum not striate. Forewing with membrane indistinct; bases of anteapical cells approximately aligned with claval apex; four apical cells, base of fourth more proximal than base of third. Hind wing with vein R2+3 incomplete. Hind leg with length of first tarsomere greater than combined length of two more distal tarsomeres.

Male terminalia. Pygofer ( Fig. 32View FIGURES 31–36), in lateral view, slightly produced posteriorly, posterior margin convex; disk with macrosetae on posterior portion; without processes. Subgenital plate ( Fig. 33View FIGURES 31–36), in ventral view, with apical 2/3 strongly narrowed; in lateral view, extending posteriorly slightly beyond pygofer apex; with long uniseriate macrosetae, microsetae also present. Style ( Fig. 34View FIGURES 31–36), in dorsal view, without preapical lobe; narrowed apically, sickle-shaped. Connective ( Fig. 34View FIGURES 31–36), in dorsal view, V-shaped; stalk short and broad, not extending as far posteriorly as apex of style. Aedeagus ( Fig. 35View FIGURES 31–36) symmetrical, without processes; shaft, in lateral view, strongly curved dorsally, with dorsal margin convex and ventral margin concave; apex truncate. Paraphyses ( Fig. 36View FIGURES 31–36), in dorsal view, with stalk narrow, articulated with apex of connective; base of rami with pair of projections directed anteriorly; rami very slender, slightly asymmetrical.

Female terminalia. Sternite VII ( Figs. 37–39View FIGURES 37–44), in ventral view, well produced posteriorly; distal margin with median triangular projection. Pygofer ( Figs. 37–38View FIGURES 37–44), in lateral view, moderately produced posteriorly; posterior margin narrowly rounded; macrosetae distributed on posterior portion and extending anteriorly along ventral margin. Second valvula ( Figs. 40–44View FIGURES 37–44), in lateral view, straight; dorsal margin bearing about 20 continuous teeth; most teeth ( Figs. 41–42View FIGURES 37–44) elongate, with basal portion projected dorsally and apical portion very low, flattened; apicalmost 3–4 teeth ( Figs. 42–43View FIGURES 37–44) triangular; denticles distributed on teeth and on apical portion of blade (ventral dentate apical portion distinctly longer than dorsal portion); preapical prominence ( Fig. 44View FIGURES 37–44) distinct; apex acute. Gonoplac (partially visible in Fig. 37View FIGURES 37–44), in lateral view, with basal half narrow; apical half expanded, narrowing towards apex; latter subacute.

Color ( Figs. 31View FIGURES 31–36, 45View FIGURES 45–46). Dorsum dark brown to black. Crown with anterior half yellow, with small, median black spot at transition to face. Pronotum with broad transverse yellow stripe. Apex of scutellum yellow. Forewing with two large transcommissural yellow spots, first one on basal half of clavus (continuous with apex of scutellum), second one on distal portion of clavus and extending over corium; small yellow spot on distal portion close to costal margin (at base of fourth apical cell). Face mostly yellow. Lateral and ventral portions of thorax mostly yellow; lateral lobe of pronotum, mesepisternum, and mesepimeron with large dark brown to black areas. Legs mostly yellow. Abdomen yellow ventrally and dark brown dorsally.

Taxonomic notes. Our interpretation of J. xanthogramma  is based on a fairly precise agreement of characters of our specimens ( Fig. 45View FIGURES 45–46) with the original description and color illustration ( Fig. 46View FIGURES 45–46) provided by Signoret (1854), as well as with the redescription by Melichar (1951). This species, which was not treated by Young (1977) in his Cicadellini  monograph ( McKamey 2007), can be distinguished by the following features: (1) crown with anterior half yellow ( Figs. 31View FIGURES 31–36, 45View FIGURES 45–46); (2) pronotum with broad transverse yellow stripe ( Figs. 31View FIGURES 31–36, 45View FIGURES 45–46); (3) forewing with two large transcommissural yellow spots, first one on basal half of clavus (continuous with apex of scutellum) and second one on distal portion of clavus and extending over corium ( Fig. 45View FIGURES 45–46); (4) style with apical portion sickleshaped ( Fig. 34View FIGURES 31–36); (5) aedeagus strongly curved dorsally, with dorsal margin convex and ventral margin concave ( Fig. 35View FIGURES 31–36); (6) paraphyses with base of rami bearing pair of projections directed anteriorly; rami very slender ( Fig. 36View FIGURES 31–36). The external features, color pattern, and male terminalia indicate that Juliaca  is the correct generic assignment.

Known distribution. Southeastern Brazil (states of Minas Gerais and Rio de Janeiro).

Material examined. Brazil, states of Minas Gerais and Rio de Janeiro, Mantiqueira mountain range ( Atlantic Forest )  . One male, “ Brasil-Minas \ Gerais-Itamonte \ 13-15/XI/1998 \ D. TAKIYA leg.” ( DZRJ); one male, “ BRASIL, RJ [State of Rio de Janeiro], P.N. [ Parque Nacional do] Itatiaia , \ Casa do Pesquisador \ 22°27’16.2”S 44°36’29.2”W \ 810M 7/VI/2013 panobranco [pano branco] \ DM Takiya; C Moraes; \ C Gonçalves; A Silva ” ( DZRJ); one female, same data as the preceding except “17.18/ IX/2013 \ DM TakiyaGoogleMaps  ; APM Santos ” ( DZRJ); one female, “ BRASIL, RJ, P.N. Itatiaia, \ 710-1100M 08.11/ IX/2011 \ sweep \ D M Takiya ” ( DZRJ). 

APM

Algonquin Provincial Park

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Hemiptera

Family

Cicadellidae

Genus

Juliaca

Loc

Juliaca xanthogramma ( Signoret, 1854 )

Dos Santos, Alana C., Cavichioli, Rodney R., Takiya, Daniela M. & Mejdalani, Gabriel 2018
2018
Loc

Tettigonia xanthogramma

Signoret 1854
1854
Loc

Microgoniella xanthogramma (

Signoret 1854
1854