Coarctana striata, 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 striata sp. nov.

Figs 26 , 27 , 32G, H

Diagnosis.

Pygofer (Fig. 26G ) with apex truncate. Style, in lateral view (Fig. 26K ), blade curved dorsally, ventral margin not serrated and with lateral carina. Aedeagus (Fig. 26L, M ) apodemal processes narrow basally, curved in right angle dorsally; ventral margin forming triangular lobe produced ventrally; posterior margin with transverse and parallel striae; shaft apex with pair of short processes, curved laterally and crossed over the posterior surface.

Measurements.

Total length: holotype male 8.5 mm; paratypes, females (n = 3) 9.6-10.4 mm.

Description.

Head, in frontal view (Fig. 26B ), frons 1.2 × wider than long; frontogenal suture distant from eye margin by less than half maximum width of clypeus; clypeus 1.4 × wider than long; lateral margins parallel; apex straight. Head, in lateral view (Fig. 26C ), crown-face transition thin with 4-5 transverse carinae; clypeus not inflated. Profemur AV row with 5-6 setae; PV row with 1 seta near apex. Protibia PD row with 4 setae and undifferentiated intercalary setae; PV row with 4 setae and undifferentiated intercalary setae. Metatibia PD, AD and AV rows with 23, 12 and 14-16 macrosetae respectively. Metatarsomere I 4 × 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 26A, B , 32G, H ) brown. Head (Fig. 26A ) with pair of small circular black spots, near posterior margin, behind ocellus; coronal suture black. Face (Fig. 26B ) yellowish; frons reddish-brown dorsally with pair of transverse black maculae below crown-face transition; black macula adjacent to antennal base. Pronotum (Fig. 26A ) with black punctures, irregular black maculae near anterior margin; proepimeron (Fig. 26C ) with black band below pronotal carina; lateral carina yellow. Mesonotum (Fig. 26A ) with pair of large black maculae near lateral angles and pair of small median black spots near scutoscutellar suture. Forewing (Fig. 26D ) with scattered dark-brown mottling, larger black maculae on apex of anal veins, cross veins of inner discal cell and base of first apical cell; veins brown, margined by black punctures on basal half of wing. Metatibia (Fig. 26C ) with cucullate bases of setae blacks.

Male terminalia.

Sternite VIII (Fig. 26E ) 1.4 × wider than long; lateral margins parallel; posterior margin slightly sinuous. Valve (Fig. 26F ) 1.6 × wider than long; posterior margin rounded. Pygofer, in lateral view (Fig. 26G ), 1.7 × longer than maximum height; basodorsal process present but reduced; anteroventral margin broadly rounded; posterodorsal and posteroventral margins straight; apex truncate. Subgenital plate, in lateral view (Fig. 26G ), short, not reaching pygofer apex; in ventral view (Fig. 26H ), elongated, 3.8 × longer than wide, maximum width near half length; dorsal surface with filiform setae near outer margin; lateral margins slightly rounded; apex weakly tapered and rounded. Connective (Fig. 26I ) almost as wide as long; anterior margin excavated; dorsal keel and stem reduced; stem wide. Style, in dorsal view (Fig. 26J ), with outer lobe truncated; in lateral view (Fig. 26K ), blade curved dorsally, wider near base and tapered toward apex; ventral margin not serrated, with a longitudinal carina; apex tapered, forming a small dorsal process. Aedeagus (Fig. 26L, 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; ventral margin forming triangular lobe produced ventrally; posterior margin with transverse and parallel striae; apex tapered, subacute; shaft approximately cylindrical, symmetrical, strongly curved dorsally near base, with a basolateral expansion that surrounds the previous portion of the shaft, basal third slightly curved posterad; apical third straight; apex with pair of short processes, curved laterally and crossed over the posterior surface. Other characteristics as in generic description.

Female terminalia.

Sternite VII (Fig. 27A ) 1.5 × wider than long; posterolateral angles produced as far as posterior margin; posterior margin excavated each side of emarginated median lobe which occupies the median third. Internal sternite VIII membranous. Pygofer (Fig. 27A, B ) 1.9 × longer than maximum height; ventral margin slightly rounded; dorsal margin straight; apex obliquely truncate. First valvifer (Fig. 27C ) triangular, 1.4 × longer than wide; lateral and dorsal margins straight. First valvula (Fig. 27C ) 5.2 × longer than wide; apex (Fig. 27D ) abruptly tapered and acute. Second valvula (Fig. 27E ) 3.8 × longer than wide; strongly expanded near mid-length; dorsal protuberance weakly developed; dorsal margin (Fig. 27F ) with few minute rounded teeth; apex gradually tapered and triangular. Second valvifer (Fig. 27G ) 2.5 × longer than wide. Gonoplac (Fig. 27G ) 3.7 × longer than wide; apex (Fig. 27H ) rounded. Other characteristics as in generic description.

Material examined.

Holotype male: Brazil: Tocantins: "Brasil, Tocantins, Palmas\ Taquaruçu, Fazenda\ Encantada 10°14′57″S 48°07′35.4″W Malaise\ 10-17.viii.2012 Krolow,\ T.K. & Lima, H.I.L. leg." (DZUP) . Paratypes: 1♀, same data as holotype except 15-22.vi.2012 (DZUP) . - Maranhão: 1♀, "Brasil (MA), Bom Jardim\ REBIO-Res. Biol Gurupi\ Armadilha Malaise", " 01-06.xi.2010, F.Limei \ ra-de-Oliveira, D.W.A. Mar \ ques & E.A. S. Barbosa " (CZMA) ; 1♀, "Brasil (MA), Bom Jardim\ REBIO-Res. Biol Gurupi\ Armadilha Malaise", " 02-11.ix.2010, D.W.A.\ Marques, E.A. S. Barbosa \ J.A. Silva & M.M. Abreu " (CZMA) .

Etymology.

The new species name refers to the aedeagus with apodemal processes bearing many transverse striae.

Remarks.

Coarctana striata sp. nov. (Fig. 7 ) was recovered with low support (SR = 54) as sister to the clade C. taurina sp. nov. + C. oricula sp. nov. and the clade of C. vilavelha sp. nov. + ( C. nigromedia sp. nov. + C. asymmetrica sp. nov.). Coarctana striata sp. nov. is easily separated from its congeners by the aedeagus (Fig. 26L, M ) with apodemal transversely striated on posterior margin and the shaft with pair of short apical processes, curved laterally and crossed over the posterior surface of shaft.

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 26. Coarctana striata 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 27. Coarctana striata sp. nov., paratype female. A distal portion of abdomen, ventral view. B distal portion of abdomen, lateral view. C first valvifer and first valvula, lateral view. D apical portion of first valvula. E second valvula, lateral view. F apical portion of second valvula. G second valvifer and gonoplac, lateral view. H apical portion of gonoplac. 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.