Parapachyopsis, Domahovski, 2019

Domahovski, Alexandre Cruz, 2019, New genera and species of Selenomorphini (Hemiptera: Cicadellidae: Iassinae), including redescription of Scaroidana Osborn, Pachyopsis Uhler and updated key to genera and species, Zootaxa 4711 (3), pp. 517-544 : 519-520

Parapachyopsis gen. nov.

( Figs 1 −22)

Type species: Parapachyopsis tenebris sp. nov.

Diagnosis. Head ( Figs 1 , 2, 14, 15) short, wider than pronotum; crown-face transition rounded; ocelli on anterior margin, not visible dorsally; clypeus of male (Fig. 3) narrow, not sexually dimorphic; face and pronotum without erected setae; forewing ( Figs 1 , 2, 14, 15) with small short setae mainly on clavus and bordering veins; protibia, in cross-section, circular, without longitudinal carina; metatibia PV row (Fig. 5) with setae of apical half intercalating 1 long and rounded apically seta and 2 shorter and acute setae; first tarsomere (Fig. 6) ventral surface with 2 longitudinal rows of simple (non-cucullate) setae; abdominal sternite II of male (Fig. 7) with pair of internal apodemes elongated; connective (Fig. 10) linear-shaped, stem with median dorsal keel developed; style (Figs 11, 12) with blade elongated, external surface without setae.

Description. Length 6.8−7.3mm (male), 7.7−8.5mm (female). Head ( Figs 1 , 14 ), in dorsal view, wider than pronotum; median length of crown one tent of interocular width; anterior and posterior margins parallel. Crown with anterior margin broadly rounded; surface with transverse parallel striae. Ocelli not visible dorsally. Head (Figs 2, 15), in lateral view, with crown-face transition broadly rounded, with transverse parallel striae; frons slightly inflated; clypeus flattened. Head (Figs 3, 16), in ventral view, with face wider than long, without setae; ocelli on anterior margin, mesad of antennal pits and distant from eyes; frons small, as long as wide, surface with irregular transverse striae, lateral margins convergent ventrally; frontogenal suture extending to antennal ledges; antennal ledge carinate and slightly oblique, not concealing antennal base; antenna length ca. one third width of head; gena broad, ventrolateral margin slightly excavated ventrad of eye, completely concealing proepisternum; maxillary plate produced ventrally as far as clypeus apex; epistomal suture complete; lorum broad, subgenal suture rounded, extended nearly to mid-length of lateral margin of frons; clypeus not sexually dimorphic, approximately 1.3 times longer than wide, lateral margins almost parallel, apex carinated and slightly emarginated.

Pronotum ( Figs 1 , 14 ), in dorsal view, with anterior margin rounded, not extended anterad of eyes medially, posterior margin slightly excavated; surface without setae, with transverse striae, except near anterior margin; lateral margins slightly convergent anterad, carinate, shorter than eye length; in lateral view (Figs 2, 15) convex and moderately declivous. Exposed part of mesonotum and scutellum (Figs 2, 15), as long as pronotum length, with few very small setae; mesonotum with surface rugose, except lateral angles shagreen; scutellum slightly inflated, with transverse striae.

Forewing ( Figs 1 , 2, 14, 15) with venation distinct; clavus with many, but inconspicuous veinlets, with small short setae throughout; corium with setae bordering veins, except on apical portion, sometimes with extra crossveins or lacking regular crossveins; 3 closed anteapical cells present and 5 apical cells; appendix very narrow. Hind wing with RP and MA separated apically.

Profemur (Fig. 4) moderately elongated, 3.2 times longer than high; PD, AD and AM rows formed by scattered short setae, PD1 and AD1 setae developed and AM1 reduced; IC row formed by double row of fine setae, continuous with AV row; AV row formed by irregular double row of thick setae; PV row absent. Protibia, in cross-section, circular, without longitudinal carina; AV row formed by short, thin and close setae in the basal third and thicker and spaced setae distally; AD row consisting of only small undifferentiated setae; PD row formed by small setae, intercaled with 4−5 long setae distally; PV row with 6−7 setae distally. Hind leg with femoral setal formula 2:2:1; PD2 slightly shorter than AD2; metatibia PD, AD and AV rows with 20−22, 12−13 and 12−13 macrosetae respectively; AD row without intercalary setae between macrosetae; PV row (Fig. 5) with setae of apical half intercalating 1 long and rounded apically seta and 2 shorter and acute setae, ending with 2 short, thin setae; first tarsomere (Fig. 6) ventral surface with two longitudinal rows of 6−8 short, simple (non-cucullate) setae, inner row with setae slightly longer and thicker than external row; pecten with 4 platellae flanked by short tapered lateral setae; second tarsomere pecten with 2 platellae flanked by 2 short tapered lateral setae on inner and 1 on external corner.

Abdominal sternite II of male (Fig. 7) with pair of internal apodemes elongated.

Male terminalia. Genital capsule exposed, only base of subgenital plates concealed by sternite VIII in repose. Valve (Fig. 8) broadly fused laterally to pygofer. Pygofer (Fig. 8), with ventral process arising from base and extended distad. Subgenital plate (Fig. 9), with many macrosetae on ventral surface. Connective (Fig. 10) linearshaped, stem with median dorsal keel developed. Style (Figs 11, 12), with blade elongated, without setae on external surface.

Female terminalia. Ovipositor slender, curved dorsad, not surpassing pygofer apex. First valvula (Fig. 18) with sculptured area areolate. Second valvula (Fig. 20) with two distinct subapical teeth widely spaced. Gonoplac (Fig. 22) ventral margin with microsetae and few macrosetae mainly near apex.

Distribution. Brazil (Paraná and Rio de Janeiro).

Etymology. The generic name Parapachyopsis (neutral noun) refers to the similarity between the new genus and Pachyopsis .

Notes. Compared to Pachyopsis and Scaroidana , the new genus is easily recognized by the clypeus not sexually dimorphic (sexually dimorphic in Pachyopsis and Scaroidana ); face and pronotum without setae (with many erect setae in Pachyopsis ; absent in Scaroidana ); forewing with setae mainly on clavus and bordering veins (comparatively with more setae, erect and present also between veins of corium in Pachyopsis ; absent in Scaroidana ); profemur with AV row formed by thick setae and lacking PV row (AV and PV rows formed by long and thin setae in Pachyopsis ; AV and PV rows with thick setae in Scaroidana ); protibia, in cross-section, circular, without longitudinal carina (dorsal surface flattened but not expanded, with longitudinal rounded carina adjacent to PD row in Pachyopsis and Scaroidana ); metatibia PD row with 20−22 macrosetae (14−17 in Pachyopsis ), metatibia AD row without intercalary setae between macrosetae (with intercalay setae in Scaroidana ); metatibia AV row with 12−13 macrosetae (16−19 in Scaroidana ); metatibia PV row with setae of apical half intercalating 1 long and rounded apically seta and 2 shorter and acute setae (the long intercalar setae are acute in Pachyopsis ); first tarsomere with longitudinal rows of simple (non-cucullate) setae (with cucullate bases and comparatively, more robust in Pachyopsis ); abdominal sternite II of male with pair of internal apodemes elongated (absent in Scaroidana ); subgenital plate with more macrosetae on ventral surface in comparison to Pachyopsis and Scaroidana ; connective with well developed dorsal keel, located medially (absent medially in Scaroidana ), and style without setae on external surface (many long setae in Pachyopsis ).

Figures

FIGURES 1─13. Parapachyopsis tenebris sp. nov., male holotype. 1, habitus, dorsal view. 2, habitus, lateral view. 3, head, ventral view. 4, profemur, anterior view. 5, distal portion of metatibia, anterior view. 6, first tarsomere of hind leg, ventral view. 7, Abdominal sternites I & II and internal apodemes, ventral view. 8–13, male terminalia: 8, pygofer, valve, and subgenital plate, lateral view. 9, subgenital plate, ventral view. 10, connective, dorsal view. 11, style, dorsal view. 12, style, lateral view. 13, aedeagus, lateral view. Scale bars in mm.

FIGURES 14─22. Parapachyopsis tenebris sp. nov., female paratype. 14, habitus, dorsal view. 15, habitus, lateral view. 16, head, ventral view. 17, pygofer, lateral view. 18, first valvifer and first valvula, lateral view. 19, apex of first valvula, lateral view. 20, second valvula, lateral view. 21, apex of second valvula, lateral view. 22, gonoplac, lateral view. Scale bars in mm.