Coarctana rana (DeLong & Freytag) Domahovski & Cavichioli, 2023

Domahovski, Alexandre Cruz & Cavichioli, Rodney Ramiro, 2023, Phylogenetic analysis and revision of the leafhopper genus Acuera DeLong & Freytag (Hemiptera: Cicadellidae: Gyponini) based on morphological data, Arthropod Systematics & amp; Phylogeny 81, pp. 79-164 : 79

Coarctana rana (DeLong & Freytag) comb. nov.

Figs 17 , 32C, D

Acuera rana DeLong & Freytag, 1982: 309.

Diagnosis.

Pygofer, in dorsal view (Fig. 17g ), with a small subapical process directed inwards. Subgenital plate (Fig. 17H ) with long filiform setae. Style (Fig. 17K ) with apex expanded forming rounded lobe ventrally and small dorsal process, curved anterad. Aedeagus (Fig. 17L, M ) with apodemal process very narrow, strongly curved dorsally; shaft slender; apex slightly inflated, with two pairs of short processes: a subapical pair on posterior surface, directed dorsally and a apical pair directed ventrally, about twice as long as the subapical pair.

Measurements.

Total length: males 7.6-8.1 mm.

Description.

Head, in frontal view (Fig. 17B ), frons 1.1 × wider than long; frontogenal suture distant from eye margin by approximately the width of scape; clypeus 1.3 × wider than long; lateral margins straight and parallel; apex straight. Head, in lateral view (Fig. 17C ), crown-face transition moderately thick, with 5-6 transverse carinae; clypeus not inflated. Profemur AV row with 5-6 setae; PV row with 3-4 setae. Protibia PD row with 4 setae and undifferentiated intercalary setae; PV row with 5 setae and undifferentiated intercalary setae. Metatibia PD, AD and AV rows with 22-24, 12 and 13-15 macrosetae respectively. Metatarsomere I 4.5 × longer than apical width; inner row of the ventral surface with 7-8 setae. Other characteristics as in generic description.

Coloration.

Head and thorax (Figs 17A-D , 32C, D ) yellowish-brown. Head (Fig. 17A ) with pair of small circular black spots, near posterior margin, behind ocelli; coronal suture black; ocellus surrounded by black maculae in more melanic specimens. Face (Fig. 17B ) yellowish, without maculae. Pronotum (Fig. 17A ) with black punctures and irregular black spots near anterior margin; proepimeron (Fig. 17C ), with black band below pronotal carina. Mesonotum (Fig. 17A ) with dark-brown lateral angles, pair of small median black spots near scutoscutellar suture. Forewing (Fig. 17D ) strongly marked by dark-brown mottling; veins yellowish-brown, outlined by dark-brown. Metatibia (Fig. 17C ) with cucullate bases of setae blacks.

Male terminalia.

Sternite VIII (Fig. 17E ) 1.5 × wider than long; lateral margins parallel; posterior margin produced medially forming short, rounded lobe. Valve (Fig. 17F ) narrow, 1.1 × wider than long; posterior margin tapered and rounded. Pygofer, in lateral view (Fig. 17G ), 1.4 × longer than maximum height; basodorsal process present but reduced; anteroventral and posterodorsal margins straight; posteroventral margin broadly rounded; apex broad, slightly excavated; in dorsal view (Fig. 17g ), with small subapical process directed inwards. Subgenital plate, in lateral view (Fig. 17G ), surpassing pygofer apex; in ventral view (Fig. 17H ), elongated, 3.8 × longer than wide, maximum width medially; outer margin with long filiform setae; inner margin slightly rounded; outer margin straight; apex weakly tapered and rounded. Connective (Fig. 17I ) wider than long; anterior margin excavated; dorsal keel and stem reduced. Style, in dorsal view (Fig. 17J ), with outer lobe small and rounded; strongly sinuate between outer lobe and blade; in lateral view (Fig. 17K ), with blade slightly wider near base and tapered toward apex; dorsal and ventral margins slightly sinuate; ventral margin with apical half serrated; apex expanded forming rounded lobe ventrally and small dorsal process, curved anterad. Aedeagus (Fig. 17L, M ) preatrium weakly developed; dorsal apodeme with dorsal margin slightly excavated, lateral margins produced ventrolaterally; apodemal process very narrow, strongly curved dorsally, apex tapered and acute; shaft slender, cylindrical, curved dorsally near base; apex slightly inflated, with two pairs of short processes: a subapical pair on posterior surface, directed dorsally and a apical pair directed ventrally, about twice as long as the subapical pair. Other characteristics as in generic description.

Female.

Unknown.

Material examined.

Bolivia: 3♂, “Bolívia, Cochabamba,\ Vila Tunari \ 16°54′55″S 65°22′06″W \ 10.VI-03.VII.2002 \ malaise Helmut Heidas" (DZRJ) ; 1♂, same data as preceding except 07-20.IX.2002 (DZUP) . - Brazil: Rondônia : 1♂, " Ouro Preto \ d′Oeste, RO.\ 31.X.1987 \ C. Elias, leg" (DZUP). - Peru : 2♂, " Peru: San Martin, Cons. \ Mun. Zona Barreal 23Km S\ Picota 335m, 7°04.88′S, 79°18.89′W 6-15Mar2005,\ ME Irwin, JD Vasquez,\ Malaise, dry Florest PE 11-02" (DZRJ) ; 1♂, " Peru: Dept Amazonas,\ Distr. Aguas Verdes ,\ Bagua Taparoto Rd (5N)\ at Km 403; 23-30.I.2009 \ ME Irwin, GA Amaya,\ 1125m; 05°41′23″S 77°38′13″W " (DZRJ) ; 1♂, same data as preceding except 30.I-06.II.2009 (DZRJ) ; 1♂, same data as preceding except 15-22.V.2009 (DZUP) .

Remarks.

Our analysis recovered C. rana comb. nov. as sister to C. serpenta comb. nov. with low branch support (SR <50) (Fig. 7 ). These species are similar in the overall coloration (Fig. 32C-F ); in having a small digitiform processes at pygofer apex (Fig. 17g ); the subgenital plates (Fig. 17H ) with long filiform setae; and in the shape of the apodemal processes of aedeagus, slender and strongly curved (Fig. 17L ).

Figures

Figure 7. Phylogenetic relationships of Acuera found in the implied weighting analysis for the two equally most parsimonious trees, K = 3.700 and 4.284, length = 514, consistency index = 0.362, retention index = 0.771. Symmetric resampling values (<50) are marked next to branches; red stars represent the type species of the three subgenera of Acuera. Synapomorphies are marked with black circles, while homoplasies are marked with empty circles.

Figure 17. Coarctana rana comb. nov., male. A head and thorax, dorsal view. B head, ventral view. C head and thorax, lateral view. D forewing. E sternite VIII, ventral view. F valve, ventral view. G pygofer, valve and subgenital plate, lateral view; g apical portion of pygofer, dorsal view. H subgenital plate, ventral view. I connective, dorsal view. J style, dorsal view. K style, lateral view. L aedeagus, lateral view. M aedeagus, posterior view. Scale bars in mm.

Figure 32. Species of Coarctana gen. nov., dorsal (left) and lateral (right) views. A, B C. punctata comb. nov., holotype female, NHRS GULI 000069783. C, D C. rana comb. nov., holotype male, OSU. E, F C. serpenta comb. nov., holotype male, AMNH. G, H C. striata sp. nov., holotype male, DZUP. I, J C. taurina sp. nov., holotype male, DZUP. K, L C. vilavelha sp. nov., holotype male, DZUP.