Uhleriana, 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 : 534-537

Uhleriana gen. nov.

( Figs 83 −92)

Type species: Uhleriana tornatucephala sp. nov.

Diagnosis. Head ( Figs 83 −85) short, wider than pronotum; rounded in profile; frons strongly rugose; ocelli on anterior margin, not visible dorsally; face, pronotum and mesonotum without setae; forewing ( Figs 83 , 84) with few short setae on clavus and bordering veins on corium; metafemur with apical setae PD2 and AD3 very reduced in size; abdominal sternite II of male (Fig. 86) with pair of internal apodemes elongated; connective (Fig. 89) with stem not wider apically, lateral margins almost parallel, median dorsal keel developed; style (Figs 90, 91) with blade bearing long setae on external surface.

Description. Length 7.5 mm. Body ( Figs 83 , 84) not flattened dorsoventrally, moderately elongated. Head ( Fig. 83 ), in dorsal view, short, wider than pronotum; median length of crown ca. one tent of interocular width. Crown with anterior margin broadly rounded, surface with transverse striations. Ocelli not visible dorsally. Head (Fig. 84), in lateral view, with crown-face transition broadly rounded; frons slightly inflated. Head (Fig. 85), in ventral view, with face wider than long, without setae; ocelli on anterior margin, slightly mesad of antennal pits and well separated from eyes; frons surface strongly rugose, lateral margins, convergent ventrad; 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 with ventrolateral margin slightly excavated ventrad of eye, completely concealing proepisternum; maxillary plate very narrow, not produced ventrally as far as clypeus apex; epistomal suture complete; lorum narrow, approximately four times longer than wide, lateral suture extended nearly to dorsal margin of clypeus; clypeus surface finely rugose, strongly inflated, 1.7 times wider than high, lateral margins rounded basally and strongly convergent apically; apex carinate and excavated.

Pronotum ( Fig. 83 ), in dorsal view, with anterior margin rounded, 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 (Fig. 84) convex and moderately declivous. Exposed part of mesonotum and scutellum approximately as long as pronotum length, without setae; mesonotum with surface rugose, except lateral angels, shagreen; scutellum flattened, with irregular transverse striae.

Forewing ( Figs 83 , 84) with venation distinct; with short setae on clavus and laterally of veins on corium, with few veinlets on clavus; 3 closed anteapical cells and 5 apical cells; appendix very narrow. Hind wing with RP and MA separated apically.

Profemur moderately elongated, ca. three times longer than high; PD, AD and AM rows formed by scattered, undifferentiated setae, PD1 and AD1 setae developed; IC row formed by double row of fine setae, continuous with AV row; AV and PV rows formed by long and thin setae. Protibia, with dorsal surface flattened but not expanded, with longitudinal rounded carina adjacent to PD row; 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 long setae; PV row with 4−5 longer setae distally. Hind leg with femoral setal formula 2:2:1, PD2 and AD3 with size reduced; metatibia PD, AD and AV rows with 17−18, 10, 13−14 macrosetae respec- tively; AD row without intercalary setae between macrosetae; PV row with setae of apical half intercalating long, acute setae and 2−4 shorter setae, ending with 2 short, thin setae; first tarsomere ventral surface with 2 longitudinal rows of 7−9 short cucullate setae; pecten with 4 platellae flanked by tapered lateral setae; second tarsomere pecten with 2 platellae flanked by 2 tapered lateral setae on inner and 1 on external corner.

Abdominal sternite II of male (Fig. 86) with pair of internal apodemes elongated, extending to posterior margin of sternite IV.

Male terminalia. Sternite VIII approximately as long as wide and as long as sternite VII; with few thin setae near lateral margins and posterior margin. Genital capsule exposed, only base of styles concealed by sternite VIII in repose. Valve (Fig. 87) broadly fused laterally to pygofer, wider than long. Pygofer (Fig. 87), with macrosetae on posteroventral quadrant and small thin setae on ventral half; ventral process arising from base and extended distad. Anal tube membranous, without processes. Subgenital plate (Fig. 88), elongated, with macrosetae on ventral surface and many long setae along external margin. Connective (Fig. 89) linear; ventral projection between arms, directed anterad; stem long, approximately as wide as arms, with longitudinal dorsal keel, medially. Style (Fig. 90), in dorsal view with external lobe rounded; in lateral view (Fig. 91), blade elongated, with long setae on external surface, ventral margin not serrated. Aedeagus (Fig. 92) with preatrium strongly produced anterad; shaft flattened laterally, without processes; gonopore opening on mid-length of posterior surface.

Distribution. Brazil (Mato Grosso).

Etymology. The generic name Uhleriana (feminine noun) is a tribute to Philip Reese Uhler in recognition of his contribution to the knowledge in Hemiptera .

Notes. Uhleriana gen. nov. appears to have intermediary features between Pachyopsis and Scaroidana . In comparison to these genera, the new genus will be easily recognized in having the head wider than pronotum (as wide as pronotum in Scaroidana ); the more rounded head in profile (front more flattened in Pachyopsis and Scaroidana ); face and pronotum without setae (with many erected setae in Pachyopsis ); the frons more strongly rugose (with transverse striae or transverse irregular striae in Pachyopsis ; shagreen in Scaroidana ); the lateral margins of pronotum shorter than eye length (as long as in Scaroidana ); the forewing with few short setae on clavus and only bordering veins on corium (longer erect setae, more densely placed and present within cells in Pachyopsis ; setae absent in Scaroidana ); the profemur with AV and PV rows formed by thicker setae (formed by long and thin setae in Pachyopsis ); the hind leg with apical setae PD2 and AD3 very reduced in size (PD2 and AD3 only moderately shorter and thinner than AD1, PD1 and AD 2 in Pachyopsis ; setae with equal size in Scaroidana ); the metatibia PD row with 17−18 macrosetae (14−17 in Pachyopsis ; 23−26 in Scaroidana ); the metatibia AD row without intercalary setae between macrosetae (with intercalary setae in Scaroidana ); the metatibia with AV row with 13−14 macrosetae (9−11 in Pachyopsis ; 16−19 in Scaroidana ); the first tarsomere with longitudinal rows of cucullate setae (non-cucullate setae in Scaroidana ); the abdominal sternite II of male with pair of internal apodemes elongated (absent in Scaroidana ); the connective with well developed dorsal keel, located medially (absent medially in Scaroidana ), and the lateral margins of stem approximately parallel (divergent apically in Pachyopsis ); the blade of style with long setae on external surface (absent in Scaroidana ), and the ventral margin not serrated ventrally (serrated, at least in S. blockeri , S. fulvula and S. flavida ).

The lorum and clypeus of Uhleriana gen. nov. is very similar to the males of Pachyopsis and probably are sexually dimorphic, although females need to be examined to confirm. The legs of the new genus was not illustrated as in the other descriptions because they are very similar to pattern of Pachyopsis , illustrated for P. fasciatus sp. nov. (Figs 26−28) and also to preserve the integrity of the holotype.

Figures

FIGURES 83─92. Uhleriana tornatucephala sp. nov., male holotype. 83, habitus, dorsal view. 84, habitus, lateral view. 85, head, ventral view. 86, Abdominal sternites I & II and internal apodemes, ventral view. 87–92, male terminalia: 87, pygofer, valve, and subgenital plate, lateral view. 88, subgenital plate, ventral view. 89, connective, dorsal view. 90, style, dorsal view. 91, style, lateral view. 92, aedeagus, lateral view. Scale bars in mm.