Daridna nielsoni, Barbosa & Gonçalves, 2021

Barbosa, Julianna Freires & Gonçalves, Clayton Corrêa, 2021, Coelidinae (Insecta: Hemiptera: Cicadellidae) from Tambopata, Madre de Dios Peru: checklist with new records and description of a new species of Walker, 1858, Zootaxa 4964 (2), pp. 288-302 : 289-291

Daridna nielsoni sp. nov.

( Figs 2–15 )

Holotype male. Peru, MD [Madre de Dios], Albergue Refugio Amazonas , 12º52’30”[S]/69º24’35”[W], 231 m, 25.ii.2016, leg. J. Grados // Wired Amazon Project, Pan Trap: 1m ( MUSM) . Paratypes. 1m: idem holotype, except 17.iii.2016 , leg. D. Couceiro/ Wired Amazon Project (DZRJ-AUCH-167); 3m: 05.x.2016 ( MUSM) ; 1m: 09.x.2016 ( MUSM) ; 3m: 13.x.2016 ( MUSM) ; 1m: 28.xi.2016 ( MUSM) ; 1m: 01.xii.2016 ( MUSM) ; 1m: 19.xii.2016 ( MUSM) ; 1m: 17.iv.2017 ( MUSM) ; 1m: 20.iv.2017 ( MUSM) ; 1m: 30.iv.2017 ( MNRJ) ; 2m: 06.v.2017 ( MUSM) ; 2m: 05.vi.2017 (DZRJ-AUCH-168, 169); 1m: 29.x.2017 (DZRJ-AUCH-170); 3m: 27.xi.2017 (DZRJ-AUCH-171- 173); 1m: 22.i.2018 ( MNRJ) ; 1m: idem holotype, except leg. J. Shoobridge, 17.iv.2018 ( CEIOC) ; 1m: 03.v.2018 ( CEIOC) .

Length. 8.2–8.5 mm (males n = 26).

Diagnosis. Style ( Figs 9–10 ) with apical half enlarged, apex slightly emarginate. Aedeagus ( Figs 11–13 ) with flap-like process on the left side at mid-lenght with one continuous row of spines bifurcating near the apex.

Color. Yellow with black areas ( Figs 2–4 , 14–15 ). Crown yellow with a large black H-shaped median macula, extending from the posterior margin to the ocelli; clypeus black with a yellow fusiform median longitudinal strip that extends along its entire length to the dorsal portion of the clypellus; clypellus black; antennal ledges yellow; gena yellow, except for a black portion below the eyes and adjacent to the clypeus; lorum mostly yellow except for a black portion adjacent to the clypeus and clypellus; maxilary plates and labium black. Pronotum yellow with three black longitudinal stripes, one median and two lateral, one behind each eye; mesonotum mostly black, with two yellow lateral stripes in the posterior two-thirds; scutellum yellow ( Figs 2 , 14 ). Forewing dark brown hyaline, clavus with an orange band adjacent to the claval suture, corium with four depigmented areas, first largest in middle third, extending from costal margin to M vein, others in posterior third, arranged obliquely between apical cells ( Fig. 5 ).

External morphology. Crown ( Fig. 2 ) with anterior margin rounded produced anterad beyond eyes, slightly wider than long, interocular width about one-third of transocular width; lateral margins slightly divergent; disk slightly depressed. Clypeus ( Fig. 3 ) long and broad; lateral margins converging apically; apex convex, slightly larger than base. Clypellus ( Fig. 3 ) V-shaped, four-ninths length of clypeus; in lateral view ( Fig. 4 ), with basal half swollen Pronotum ( Fig. 2 ) large, distinctly larger than head; median length about twice crown median length; surface striate. Scutellum ( Fig. 2 ) large, median length about four-ninths of pronotum median length. Forewing ( Fig. 5 ) apex acutely angled; with 3 anteapical cells and 5 apical cells.

Male genitalia. Pygofer, in lateral view ( Fig. 6 ) short, taller than long, apex ( Fig. 7 ) apparently bilobed apically: dorsal lobe digitate with dorsal margin with small denticles, ventral lobe rectangular with several setae; caudodorsal process short and spatulate, reaching base of caudal margin lobes; caudoventral process absent. Subgenital plate long, narrow, in lateral view ( Fig. 6 ), slightly exceeding apex of pygofer; in ventral view ( Fig. 8 ), slightly enlarged on second-third of length, tapering apically; with numerous setae on apical fourth; apex acutely rounded. Connective, in dorsal view ( Fig. 9 ), Y-shaped; with well-developed dorsal keel, stem very short; arms long and wide. Style ( Fig. 9 ) short, approximately twice length of connective, not reaching apex of aedeagus; in lateral view ( Fig. 10 ), apodeme and basal portion of apophysis expanded dorsally, rounded, flap-like; apophysis short, with apical half enlarged, apex slightly emarginate. Aedeagus ( Figs 11–13 ) asymmetrical, long and tubular; flap-like process on left side at mid-length with one continuous row of spines bifurcating near apex; gonopore at mid-length; apex hooked; dorsal apodeme long, approximately two-thirds length of shaft. Anal tube with abdominal segment X ( Fig. 6 ) long, without process.

Female unknown.

Taxonomic notes. This species is very similar to Daridna subtangens Walker, 1858 , although Daridna nielsoni can be easily distinguished by the emarginated apex of the style ( Fig. 10 ) and the aedeagus lacking a pectinate process at mid-length, with one continuous row of spines bifurcating near the apex ( Figs 11–13 ).

Etymology. The species epithet is in honor of Dr. Merv Nielson for his valuable contributions to Coelidinae studies.

Figures

FIGURES 2–13. Daridna nielsoni sp. nov., male holotype. 2, anterior portion of body, dorsal view. 3, head, frontal view. 4, anterior portion of body, lateral view. 5, forewing. 6, valve, pygofer, anal tube and subgenital plate, lateral view. 7, apex of pygofer, lateral view. 8, subgenital plate, ventral view. 9, connective and styles, dorsal view. 10, style, lateral view. 11, aedeagus, lateral view. 12, aedeagus, dorsal view. 13, apical portion of aedeagus, dorsal view.

FIGURES 14–25. Habitus, dorsal and lateral views, respectively. 14 and 15, D. nielsoni sp. nov., male holotype. 16 and 17, Boliviela caverna Nielson, 2011, male. 18 and 19, B. inflata DeLong, 1969, male. 20 and 21, Carinoscapula bispinosa (Nielson, 1988), male. 22 and 23, C. sarcula (Nielson, 1992), male. 24 and 25, Clypeolidia brunnea (Osborn, 1924), male.