Polana (Angusana) pilosa

Gonçalves, Clayton Corrêa, Takiya, Daniela Maeda & Mejdalani, Gabriel, 2018, Two new species of Polana (Hemiptera: Cicadellidae: Iassinae: Gyponini) and redescription of Polana (Striapona) desela, Zootaxa 4457 (1), pp. 143-155: 144-145

publication ID


publication LSID


persistent identifier


taxon LSID


treatment provided by


scientific name

Polana (Angusana) pilosa

sp. nov.

Polana (Angusana) pilosa  sp. nov.

( Figs 1–9 View Figure , 40, 41 View Figure )

Diagnosis. Male pygofer ( Fig. 4 View Figure ), in lateral view, narrowed on apical half; style ( Figs 6, 7 View Figure ) with apex bearing tiny dorsal denticles; aedeagal shaft ( Figs 8, 9 View Figure ) with pair of small apical processes; processes of dorsal apodeme bilobate at apex.

Description (male holotype). Length 8.7 mm. Head ( Fig. 40 View Figure ), in dorsal view, not produced anteriorly; distinctly narrower than pronotum; transocular width about three-fourths of humeral width of pronotum. Crown ( Fig. 40 View Figure ) short, median length approximately two-fifths of interocular width; anterior and posterior margins approximately parallel, anterior margin slightly rounded; surface slightly concave; texture with parallel transverse striations; coronal suture distinct on basal half of crown. Ocellus large; equidistant between anterior and posterior margins of crown; closer to midline than to adjacent compound eye. Transition between crown and face ( Fig. 41 View Figure ) defined, broad; transversely striated. Face ( Fig. 1 View Figure ) slightly wider than high. Frontogenal suture extending upwards, beyond antennal ledge, to anterior margin of crown. Antennal ledge, in frontal view, oblique downward in relation to frons; extending inwardly beyond frontogenal suture. Frons ( Fig. 1 View Figure ) slightly swollen; dorsal third concave; lateral margin separated from lateral margin of eye by distance shorter than maximum width of clypeus. Epistomal suture indistinct. Clypeus ( Fig. 1 View Figure ) higher than wide; expanded apically; in lateral view ( Fig. 41 View Figure ), slightly swollen medially.

Pronotum, in dorsal view ( Fig. 40 View Figure ), with lateral margins convergent anteriorly; posterior margin slightly excavated; disk transversely striated; in lateral view ( Fig. 41 View Figure ), strongly declivous anteriorly. Mesonotum ( Fig. 41 View Figure ) with scutellum slightly swollen. Forewing ( Fig. 2 View Figure ) subhyaline; venation distinct, not reticulated; membrane without punctures; apex rounded; appendix well developed, broad, extending only to second apical cell. Forefemur with AD, AM, and PD rows reduced and poorly defined, except for apical setae AD1, AM1, and PD1, respectively; AV row formed by two or three large setae, spaced apart and restricted to basal half, and large apical seta, AV1, posterior to IC row; latter formed by slightly arched comb of fine setae beginning at apical half of femur and extending to AM1; PV row formed by four to five setae spaced apart and occupying entire femur, proximal setae distinctly smaller than others. Hind leg with femoral setal formula 2:2:1; tibial AD row with long spiniform setae with prominent bases and with two or more intercalary microsetae distributed along distal half; first tarsomere with two parallel rows of setae on ventral surface; pecten with three platellae medially, flanked by longer tapered lateral setae; apex of second tarsomere with two apical platellae flanked by longer tapered lateral setae.

Coloration. Venter pale yellow and dorsum mostly dark brown ( Figs 40, 41 View Figure ). Crown ( Fig. 40 View Figure ) yellow with brown area between ocelli and dark brown band extending from each ocellus to inner margin of adjacent compound eye. Face ( Fig. 1 View Figure ) yellow without distinct maculae. Pronotum ( Fig. 40 View Figure ) with pair of dark brown maculae near anterior margin; pair of irregular yellow stripes extending from humeral angles to median region of anterior margin; portion anterad of stripes pale yellow, portion posterad of stripes dark brown; weak yellowish median longitudinal stripe at anterior two-thirds. Mesonotum ( Fig. 40 View Figure ) with anterior half brown and posterior half brownish-yellow; basolateral angles and medioanterior region dark brown; with four small yellow markings, two near basolateral angles and two adjacent to scutellar suture. Forewing ( Fig. 2 View Figure ) mostly dark brown; clavus with four small yellow markings, first basal and adjacent to claval sulcus, second between veins 1A and 2A near base, third and fourth between veins 1A and 2A close to anal margin; corium with costal region with two colorless hyaline areas, one at basal third and another at apical third; one pale yellow macula at base. Legs ( Fig. 41 View Figure ) yellow with proximal and distal portions of tibia dark brown.

Male terminalia. Sternite VIII ( Fig. 3 View Figure ) longer than wide, median length approximately 1.3 times greater than maximum width; lateral margins slightly converging towards apex; posterior margin truncated. Pygofer ( Fig. 4 View Figure ) 1.8 times longer than maximum height; dorsal margin approximately straight, without inner process; ventrocaudal margin broadly rounded; apex rounded; macrosetae numerous and distributed throughout dorsal region of apical half. Subgenital plate, in lateral view ( Fig. 4 View Figure ), not exceeding pygofer apex; in ventral view ( Fig. 5 View Figure ), 4.7 times longer than maximum width; lateral margins approximately parallel, except at basal third where outer margin is laterally expanded; apex rounded; ventral surface with numerous filiform elongate setae distributed adjacent to whole external margin. Connective ( Fig. 6 View Figure ) Y-shaped; stem slightly shorter than arms; total length about one-third of style length. Style, in dorsal view ( Fig. 6 View Figure ), with outer lobe developed and produced; in lateral view ( Fig. 7 View Figure ), blade slightly curved dorsally; ventral margin slightly serrated at median portion; apex rounded and contoured by several tiny denticles. Aedeagus ( Figs 8, 9 View Figure ) with preatrium very short; dorsal apodeme developed, bearing pair of processes directed posteriorly and bent dorsally at right angle, apexes of processes expanded and bilobate, ventral lobe longer, thin, and acute in comparison with dorsal lobe; shaft compressed laterally, broad at basal half, apical half narrowing progressively towards apex; with pair of slight flanges at median third of shaft; apex with pair of short and thin lateral processes, directed dorsally.

Female unknown.

Etymology. The name of the new species alludes to the filiform setae that cover the subgenital plates ( Figs 4, 5 View Figure ).

Material examined. Male holotype: “ Peru, Dept. Amazonas \ Distr. Aguas Verdes, Bagual/\ Tarapoto, Rd (5N) at km\ 403, malaise, 22–29.v.2009 \ M.E. Irwin & G. Antón Amaya,\ 1125m, 05°41’23”S,\ 77°38’13”W.”; “DNA voucher\ Entomologia DZRJ \ ENTAbout ENT 2813” ( MUSM).

Remarks. Polana (Angusana) pilosa  sp. nov. is similar to P. (A.) exornata  in appearance and color ( Figs 42, 43 View Figure ). However, P. exornata  differs from the new species in having the style with apex acute and without denticles and the aedeagus with shaft compressed dorsoventrally and with two pairs of subapical processes.

Additional material examined. Polana exornata  , male allotype: “ Darien Prov. \ Santa Fe,\ Panama VI-2-67 ”; “ D.M.DeLong &\ C.A.Triplehorn \ Collectors ”; “ D.M.DeLong \ Collection ” ( OSUAbout OSU). 


Ministry of Natural Resources


Ohio State University