Oragua linnavuorii, Mejdalani, Gabriel, Da Silva, Cristiane M. F. & Takiya, Daniela M., 2016

Mejdalani, Gabriel, Da Silva, Cristiane M. F. & Takiya, Daniela M., 2016, Two new species of the sharpshooter genus Oragua Melichar, 1926 from Southeastern Brazil (Hemiptera: Cicadellidae: Cicadellini), Zootaxa 4132 (3), pp. 422-430: 423-426

publication ID

http://doi.org/10.11646/zootaxa.4132.3.10

publication LSID

lsid:zoobank.org:pub:15A7B677-B28B-45DE-B5E0-951FBBDF1CA8

persistent identifier

http://treatment.plazi.org/id/03FDE72A-DD3D-176D-8A80-2443D8F3E946

treatment provided by

Plazi

scientific name

Oragua linnavuorii
status

sp. nov.

Oragua linnavuorii   sp. nov.

( Figures 1–11 View FIGURES 1 – 8 View FIGURES 9 – 11 , 15 View FIGURES 15 – 17 , 18 View FIGURE 18 )

Total length: 10.3 mm (male holotype), 9.9–10.4 mm (male paratypes, n = 6), 9.2 mm (female paratypes, n = 2).

Male holotype. Head and thorax. Head ( Fig. 1 View FIGURES 1 – 8 ), in dorsal view, triangular, moderately produced anteriorly; median length approximately 1 / 2 of interocular width and 1 / 3 of transocular width; anterior margin narrowly rounded at apex; surface of crown coarsely punctate; median portion distinctly and broadly concave; area between eye and ocellus slightly concave; coronal suture indistinct. Antennal ledges, in dorsal view, slightly protuberant; in lateral view, with anterior margin almost vertical and slightly concave. Ocelli located approximately on imaginary line between anterior eye angles. Frons and clypeus coarsely punctate. Epistomal suture complete, inconspicuous. Clypeus ( Fig. 9 View FIGURES 9 – 11 ) with superior portion continuing profile of frons and inferior portion more nearly horizontal. Thorax ( Figs 1 View FIGURES 1 – 8 , 15 View FIGURES 15 – 17 ) with pronotal width approximately equal to transocular width; lateral margins slightly convergent anteriorly; dorsopleural carinae incomplete, not attaining posterior margin of eye; anterior portion of pronotal disc without pair of broad shallow depressions; pronotal surface coarsely punctate and with transverse rugae. Macropterous ( Fig. 9 View FIGURES 9 – 11 ), fore and hind wings extending posteriorly distinctly beyond pygofer apex; forewings with membrane not abruptly delimited from remainder of surface, texture of portion before membrane coriaceous and punctate; base of fourth apical cell located more proximally than base of third; hind wings with vein R 2 + 3 incomplete. Hind legs with femoral setal formula 2: 1: 1. First tarsomere of hind legs with length approximately equal to combined length of two more distal tarsomeres and with two irregular longitudinal rows of small setae on plantar surface.

Color ( Fig. 15 View FIGURES 15 – 17 ). Head, thorax, forewings, and legs brown to dark brown. Crown and pronotum with sparse yellow dots; mesonotum with pair of yellow dots on scutum (paratypes may have additional marks) and pair of lateral yellow maculae on scutellum. Corium and clavus of forewings with some elongate, irregular yellow lines located mostly on longitudinal veins; small irregular yellow marks also present. Face with sparse yellow dots (very faint in holotype).

Male genitalia. Pygofer ( Fig. 2 View FIGURES 1 – 8 ), in lateral view, moderately produced posteriorly; posterior margin broadly rounded; macrosetae distributed mostly on posterior 2 / 3 of disc, except dorsally; posteroventral margin ( Fig. 3 View FIGURES 1 – 8 ) with well-developed dentiform process directed inwards. Valve ( Fig. 4 View FIGURES 1 – 8 ), in ventral view, with posterior margin produced posteriorly, convex. Subgenital plates ( Figs 2, 4 View FIGURES 1 – 8 ), in ventral view, subtriangular and elongate, extending as far posteriorly as location of dentiform pygofer processes; connected to each other basally by triangular membranous area ( Fig. 2 View FIGURES 1 – 8 ); with irregular longitudinal row of macrosetae; inner margin of apical third with some smaller setae. Styles ( Fig. 5 View FIGURES 1 – 8 ), in dorsal view, without outer preapical lobe; apex broad and truncate. Connective ( Fig. 5 View FIGURES 1 – 8 ), in dorsal view, Y-shaped; stalk broad, with slight median keel and pair of lateral delicate flanges. Aedeagus ( Figs 7, 8 View FIGURES 1 – 8 ) symmetrical; shaft, in lateral view, curved dorsally; basidorsal and basiventral apodemes well-developed; apex with pair of small curved processes directed ventrolaterally ( Fig. 8 View FIGURES 1 – 8 ); gonopore located apically. Paraphyses ( Fig. 6 View FIGURES 1 – 8 ) articulated with connective; in dorsal view, with stalk short and thick; rami asymmetrical in form and in position, elongate, very slender, divergent at base.

Female. Similar in color and external form to male but submacropterous ( Figs 10 View FIGURES 9 – 11 , 18 View FIGURE 18 ) and thus of a smaller total length than the latter; fore and hind wings extending just slightly beyond apex of pygofer and gonoplacs ( Fig. 11 View FIGURES 9 – 11 ) or apical portion of these structures exposed ( Fig. 18 View FIGURE 18 ); forewings with apical cells distinctly smaller than those of male. Sternite VII ( Fig. 11 View FIGURES 9 – 11 ), in ventral view, with strong, posteromedian triangular projection (spiniform in lateral view; Fig. 10 View FIGURES 9 – 11 ).

Known distribution. Atlantic Forest, Southeastern Brazil (Mantiqueira mountain range), Rio de Janeiro State.

Type material. Male holotype: “RJ: Itatiaia 1442m \ P.N. do Itatiaia \ 20 / 12 / 2013 \ 22 ° 25 '42.6"S \ 44 ° 37 '42.2"W \ R. Monteiro et al. col.” ( DZRJ). Paratypes: four males, same data as holotype (two at DZRJ, one at DZUP, one at MNRJ); two males, one female: “ BRASIL, RJ, Itatiaia, PN do \ Itatiaia, Trilha 3 Picos \ S 22 ° 26 '01.4" W 44 ° 36 '49.5" \ 1070m 05.xii. 2015 \ Takiya, \ Paladini, Freitas & Ferreira” ( DZRJ); one male, one female, “ BRASIL, RJ, Itatiaia, PN do \ Itatiaia, Travessia Rui Braga \ S 22 ° 25 '50.4" W 40 ° 37 '12.6" \ 1100m 06.xii. 2015 \ Takiya, \ Santos, Freitas & Ferreira” ( MNRJ); one male, “ BRASIL \ Itatiaia \ (1.100 Mtr.) \ Est[ado] do Rio [de Janeiro] \ Dirings”; “ NOV · 1962 ” ( MZSP); one male, “Campo Bello [probably Itatiaia] \ Brazil \ X. ‘ 36 ”; “A. Maller, Coll. \ Frank Johnson \ Donor” ( NCSU). The holotype is in excellent condition; the tarsus of the right middle leg fell apart and was glued to the supporting triangle; genitalia were dissected.

Etymology. This interesting new species is described in honor of Dr. Rauno Linnavuori in recognition of his remarkable contribution to our knowledge of the diversity, taxonomy, and morphology of leafhoppers and other hemipterans of the world.

Taxonomic notes. See discussion below.

DZUP

Universidade Federal do Parana, Colecao de Entomologia Pe. Jesus Santiago Moure

MNRJ

Museu Nacional/Universidade Federal de Rio de Janeiro

MZSP

Sao Paulo, Museu de Zoologia da Universidade de Sao Paulo

NCSU

North Carolina State University Insect Museum

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Hemiptera

Family

Cicadellidae

Genus

Oragua