Beltrana, Gonçalves & Domahovski & Mejdalani & Takiya, 2021

Gonçalves, Clayton C., Domahovski, Alexandre C., Mejdalani, Gabriel & Takiya, Daniela M., 2021, Three new genera from South America and some taxonomic changes in Gyponini (Insecta: Hemiptera: Cicadellidae), European Journal of Taxonomy 750, pp. 70-93 : 72-73

Genus Beltrana gen. nov.

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Figs 1 , 6A–B

Type species

Beltrana reticulata gen. et sp. nov., by present designation and monotypy.

Diagnosis

Medium-sized leafhoppers ( Fig. 6A–B ). Head in dorsal view ( Fig. 1A ) moderately produced anteriorly, median length of crown slightly less than interocular width; in lateral view ( Fig. 1C ), with crown-face transition with anterior margin foliaceous and bicarinate. Forewing ( Fig. 1D ) with venation densely reticulated, appendix very narrow. Male pygofer ( Fig. 1F ) without membranous apical digitiform process. Subgenital plate ( Fig. 1F, H ) fully sclerotized. Aedeagus ( Fig. 1K–L ) simple, without apodemal processes.

Etymology

The generic name is feminine. Beltrana , together with Fulana and Sicrana , forms a very popular expression in Brazil (“Fulana, Sicrana e Beltrana ”), which refers to unspecified people or people whose actual names should not be mentioned.

Description

HEAD AND THORAX. Head in dorsal view ( Fig. 1A ) moderately produced anteriorly, median length of crown slightly less than interocular width; transocular width about six-sevenths humeral width of pronotum; crown with anterior margin broadly rounded, surface mostly flat, slightly concave medially, with subtle oblique striae between ocelli and adjacent to anterior margin; ocellus medium-sized, equidistant between median line and eye margin, closer to posterior than anterior margin of crown; coronal suture distinct only on basal portion of crown. Head in ventral view ( Fig. 1B ) with face slightly higher than wide; frontogenal suture distant from eye margin by slightly less than maximum width of clypeus and extending to anterior margin of crown; antennal ledge carinated and adjacent to anterior margin of crown, obliquely ascending and not extending over frons; frons approximately 1.7 times as long as wide; epistomal suture indistinct; clypeus approximately 1.3 times as long as maximum width, lateral margins parallel, apex slightly emarginated; maxillary plate produced ventrally, not reaching clypeus apex; gena excavated just below eye, ventrolateral margin slightly excavated. Head in lateral view ( Fig. 1C ) with crown-face transition distinct and foliaceous, with two carinae; frons concave below anterior margin of crown. Pronotum ( Fig. 1A ) with transverse striae on disc and posterior half; lateral margins straight, convergent anterad, and approximately as long as eye length; posterior margin excavated; in lateral view ( Fig. 1C ), moderately declivous, continuous with head declivity. Mesonotum ( Fig. 1A ) longer than wide; scutellum ( Fig. 1C ) flat. Forewing ( Fig. 1D ) hyaline, long, and narrow, approximately 3.2 times as long as maximum width; venation distinct and densely reticulated; appendix very narrow. Profemur with AD, AM, and PD rows reduced and poorly defined, with exception of apical setae AD 1, AM 1, and PD 1, respectively; AV and PV rows formed by 4–5 setae; IC row formed by slightly arched comb of fine setae, beginning at distal third of femur and extending to AM 1. Protibia, in cross-section, semi-circular; AV row formed by long setae, slightly longer and thicker towards apex; AD and PD rows without differentiated setae; PV row with 5 setae. Metafemur with setal formula 2:2:1. Metatibial AD row without intercalary setae between macrosetae; PD, AD, and AV rows with 26–28, 13–14, and 19–20 macrosetae, respectively. Metatarsomere I with outer setal row indistinct, apex with 5 platellae. Metatarsomere II apex with 4 platellae.

MALE TERMINALIA. Pygofer ( Fig. 1F ) without membranous apical digitiform process. Subgenital plate ( Fig. 1F, H ) fully sclerotized. Connective ( Fig. 1I ) T-shaped. Aedeagus ( Fig. 1K–L ) simple, without apodemal processes.

FEMALE TERMINALIA. Female unknown.

Distribution

French Guiana.

Remarks

An unpublished phylogenetic hypothesis based on 182 morphological characters combined with sequence data (28S and 16S rDNA and cytochrome oxidase subunit I) recovered Beltrana gen. nov. as the sister group of the clade Reticana DeLong & Freytag, 1964 + Chloronana DeLong & Freytag, 1964 ( Gonçalves 2016) . Beltrana gen. nov. shares the following morphological characteristics with Reticana and Chloronana : (1) green coloration in life, yellow when preserved; (2) crown moderately produced anteriorly; (3) crown-face transition distinct and foliaceous; (4) forewing with venation reticulated; (5) metatibia without intercalary setae between macrosetae in AD row; (6) style short and with apical denticles; and (7) aedeagus with shaft long, thin, and with apical processes. However, Beltrana gen. nov. can easily be distinguished from Reticana and Chloronana by its more robust body ( Fig. 6A ); forewing more densely reticulated ( Fig. 1D ); male pygofer without membranous apical digitiform process ( Fig. 1F ); and subgenital plate fully sclerotized ( Fig. 1F, H ).

Figures

Fig. 1. Beltrana reticulata gen. et sp. nov., holotype, ♂ (USNM). A. Head and thorax, dorsal view. B. Head, ventral view. C. Head and thorax, lateral view. D. Forewing. E. Sternite VIII. ventral view. F. Pygofer, anal tube, valve, and subgenital plate, lateral view. G. Pygofer lobe and anal tube, dorsal view (arrow indicates the inner lobe). H. Subgenital plate, ventral view (outer margin at top of figure). I. Style and connective, dorsal view. J. Style, lateral view. K. Aedeagus, lateral view. L. Aedeagus, posterior view. Scale bars: A–C=1.0 mm; D =2.0 mm; E–L=0.5 mm.

Fig. 6. Habitus of type specimens, dorsal and lateral view, respectively. A–B. Beltrana reticulata gen. et sp. nov., holotype, ♂ (USNM). – C–D. Fulana brasiliensis gen. et sp. nov., holotype, ♂ (DZRJ). – E–F. Fulana brasiliensis, paratype ♀ (DZRJ-AUCh #251). G–H. Sicrana plana gen. et sp. nov., holotype, ♂ (EPNC). – I–J. Sicrana plana gen. et sp. nov., paratype, ♀ (EPNC). Scale bars: 2.0 mm.