Coarctana taurina, 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 taurina sp. nov.

Figs 28 , 32I, J

Diagnosis.

Pygofer (Fig. 28G ) with apex slightly tapered, subacute. Subgenital plate (Fig. 28H ) with small group of filiform setae on apex. Style, in lateral view (Fig. 28K ), blade with ventral margin not serrated; apex enlarged, forming a rounded dorsal process. Aedeagus (Fig. 28L, M ) apodemal processes narrow basally, curved in right angle dorsally; distal portion, in lateral view, expanded medially, external surface, in posterior view, bearing acute process curved dorsally; shaft apex with pair of minute processes, directed ventrally.

Measurements.

Total length: holotype male 7.8 mm; paratypes, males (n = 5) 7.7-8.0 mm.

Description.

Head, in frontal view (Fig. 28B ), frons 1.2 × wider than long; frontogenal suture distant from eye margin by approximately the width of scape; clypeus 1.2 × wider than long; lateral margins slightly convergent apically; apex straight. Head, in lateral view (Fig. 28C ), crown-face transition thin, with 4 transverse carinae; clypeus not inflated. Profemur AV row with 4-5 setae; PV row with 1-2 setae. Protibia PD row with 3 setae and undifferentiated intercalary setae; PV row with 5 setae and undifferentiated intercalary setae. Metatibia PD, AD and AV rows with 21-23, 12 and 14-16 macrosetae respectively. Metatarsomere I 4 × longer than apical width; inner row of the ventral surface with 5 setae. Other characteristics as in generic description.

Coloration.

Head and thorax (Fig. 32I, J ) reddish-brown. Head (Fig. 28A ) with pair of small circular black maculae near posterior margin behind ocelli. Face (Fig. 28B ) yellowish without maculae. Pronotum (Fig. 28A ) with black punctures and pair of circular black spots near anterior margin behind eye; proepimeron (Fig. 28C ), with narrow black band below pronotal carina; lateral carina yellow. Forewing (Fig. 28D ) with black maculae on apex of anal veins, cross veins of inner discal and apical cells; transverse brown stripe over subapical cells. Metatibia (Fig. 28C ) with cucullate bases of setae blacks.

Male terminalia.

Sternite VIII (Fig. 28E ) 1.6 × wider than long; lateral margins weakly convergent posterad; posterior margin rounded. Valve (Fig. 28F ) 3.5 × wider than long; dorsal margin slightly excavated; posterior margin straight. Pygofer, in lateral view (Fig. 28G ), 2 × longer than maximum height; basodorsal process thin and short, extending ventrally for 1/4 height of lateral lobe; anteroventral, posterodorsal and posteroventral margins rounded; apex slightly tapered, subacute. Subgenital plate, in lateral view (Fig. 28G ), short, not reaching pygofer apex; in ventral view (Fig. 28H ), elongated, 4.5 × longer than wide, maximum width near basal third; outer margin with minute setae, apex with small group of filiform setae; inner margin slightly rounded; external margin straight; apex rounded. Connective (Fig. 28I ) 2 × wider than long; anterior margin excavated; dorsal keel and stem reduced; stem wide. Style, in dorsal view (Fig. 28J ), with outer lobe reduced and rounded; in lateral view (Fig. 28K ), blade weakly curved dorsally, wider near base and tapered toward apex; ventral margin not serrated; apex enlarged, forming rounded dorsal process. Aedeagus (Fig. 28L, M ) preatrium weakly developed; dorsal apodeme with dorsal margin straight, lateral margins slightly produced laterally; apodemal processes narrow basally, curved in right angle dorsally at basal third; distal portion, in lateral view, expanded medially, external surface, in posterior view, bearing acute process curved dorsally; apex rounded, with subapical constriction; shaft symmetrical, strongly curved dorsally near base, with basolateral expansion that surrounds the previous portion of shaft, middle portion cylindrical; apex weakly curved ventrally, with pair of minute processes, directed ventrally. Other characteristics as in generic description.

Female.

Unknown.

Material examined.

Holotype male: Brazil: Rondônia: "Vilhena, RO\ 17/X/1986 \ C. Elias, leg.\ Polonoroeste" (DZUP) . Paratypes: 1♂, same data as holotype (DZUP) ; 1♂, same data as holotype except 15/X/1986 (DZUP) . - Acre: 1♂, " Brasil , Acre , Mancio \ Lima , Parque Nacional \ Serra do Divisor,\ Rio Azul 13.iii.2006 \ light trap \ AR Calor leg" (MZSP). - Mato Grosso : 1♂, " Utiariti \ Rio Papagaio, MT\ 1-12.X.1966 \ Lenko & Pereira " (MZSP). - Maranhão: 1♂, " Brasil (MA), Carolina \ PARNA Chapada das Mesas,\ Riacho Cancela, 225m \ 7°06′42.2S 47°17′56.8″W, "Armadilha de Malaise\ 01-15.vii.2013; J.A. Rafael \ F. Limeira-de-Oliveira &\ T.T.A. Silva, cols." (CZMA). - Ecuador: "Ecuador Orellana Transect Ent. 1 km S. Onkone Gare Camp Reserva Etnica Waorani Onkone Gare Camp 220m 03/jul/95 00 39′ 10" S 076 26′ 00" W T.L.Erwin et al Fogging terre firme forest" (EPNC - on indefinite loan to the United States National Museum, Washington, USA)

Etymology.

The new species name refers to the aedeagus with apodemal processes bearing projections at the mid-length of external surface resembling bull horns.

Remarks.

Coarctana taurina sp. nov. can be easily distinguished from C. oricula sp. nov. by the style (Fig. 28K ) with an apex enlarged, forming a rounded dorsal process, the apodemal processes of aedeagus (Fig. 28L, M ) with an acute process curved dorsally on external surface, and the shaft with pair of minute apical processes, directed ventrally.

Figures

Figure 28. Coarctana taurina sp. nov., holotype 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. 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.