Coarctana oricula, 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 oricula sp. nov.

Figs 23 , 24 , 31K, L

Diagnosis.

Pygofer (Fig. 23G ) with apex slightly tapered and rounded. Subgenital plate (Fig. 23H ) with small group of filiform setae on apex. Style, in lateral view (Fig. 23K ), blade with ventral margin not serrated; apex hook-shaped. Aedeagus (Fig. 23L, M ) apodemal processes narrow basally, curved in right angle dorsally; external surface, in posterior view, bearing a broad process, rounded apically; shaft apical third broadened, posterior surface with several minute spiniform processes; apex bearing pair of long processes directed ventrally, with half length of shaft.

Measurements.

Total length: holotype male 7.9 mm; paratypes, males (n = 47) 7.5-7.9 mm, females (n = 3) 8.0-8.3 mm.

Description.

Head, in frontal view (Fig. 23B ), frons 1.2 × wider than long; frontogenal suture distant from eye margin by approximately the width of scape; clypeus 1.2 × longer than wide; lateral margins parallel; apex straight. Head, in lateral view (Fig. 23C ), 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 22-23, 12 and 14-15 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 (Figs 23A-D , 31K, L ) reddish-brown. Head (Fig. 23A ) with pair of small circular black spots, near posterior margin, behind ocelli. Face (Fig. 23B ) without maculae; gena, lorum and clypeus yellowish. Pronotum (Fig. 23A ) with black punctures; pair of circular black spots, near anterior margin, behind eye; proepimeron (Fig. 23C ), almost entirely black; lateral carina yellowish. Forewing (Fig. 23D ) with black maculae on apex of anal veins, cross veins of discal and apical cells; transverse brown stripe over subapical cells. Metatibia (Fig. 23C ) with cucullate bases of setae blacks.

Male terminalia.

Sternite VIII (Fig. 23E ) 1.6 × wider than long; lateral margins parallel; posterior margin rounded, slightly more produced medially than near lateral angles. Valve (Fig. 23F ) 2.5 × wider than long; dorsal margin slightly excavated; posterior margin rounded. Pygofer, in lateral view (Fig. 23G ), 2 × longer than maximum height; basodorsal process thin, extending ventrally for 1/3 height of lateral lobe; anteroventral margin rounded, posterodorsal and posteroventral margins straight; apex slightly tapered, subacute. Subgenital plate, in lateral view (Fig. 23G ), short, not reaching pygofer apex; in ventral view (Fig. 23H ), elongated, 4 × longer than wide, maximum width near median third; outer margin with minute setae, apex with small group of filiform setae; inner margin rounded; outer margin straight; apex rounded, weakly tapered. Connective (Fig. 23I ) wider than long; anterior margin excavated; dorsal keel and stem reduced; stem wide. Style, in dorsal view (Fig. 23J ), with outer lobe reduced and rounded; in lateral view (Fig. 23K ), blade thin and curved dorsally, slightly wider near base and tapered toward apex; ventral margin not serrated; apex acute, hook-shaped, curved ventrally. Aedeagus (Fig. 23L, M ) preatrium reduced; dorsal apodeme with dorsal margin straight, lateral margins slightly produced laterally; apodemal processes narrow basally, curved in right angle dorsally in the basal third; external surface, in posterior view, bearing broad process, rounded apically; shaft symmetrical, strongly curved dorsally near base, with a basolateral expansion that surrounds the previous portion of the shaft; apical third broadened, posterior surface with several minute spiniform processes; apex bearing pair of long processes directed ventrally, with half length of shaft. Other characteristics as in generic description.

Female terminalia.

Sternite VII (Fig. 24A ) 1.7 × wider than long; posterolateral angles slightly surpassing posterior margin; posterior margin weakly excavated each side of median lobe which occupies the median third and is V-shape notched medially. Internal sternite VIII membranous. Pygofer (Fig. 24A, B ) 1.9 × longer than maximum height; ventral margin slightly rounded; dorsal margin straight, with apical portion excavated; apex obliquely truncate. First valvifer (Fig. 24C ) subquadrate, 1.1 × longer than wide; anterior and dorsal margins straight; posterior margin rounded. First valvula (Fig. 24C ) 7 × longer than wide; apex (Fig. 24D ) tapered and acute. Second valvula (Fig. 24E ) 4.5 × longer than wide; wider after mid-length; dorsal protuberance developed and rounded; dorsal margin (Fig. 24F ) teeth reduced, only an undulation present subapically; apex abruptly tapered, subacute. Second valvifer (Fig. 24G ) 2.7 × longer than wide. Gonoplac (Fig. 24G ) 3.1 × longer than wide; apex (Fig. 24H ) rounded. Other characteristics as in generic description.

Material examined.

Holotype male: Brazil: Mato Grosso: " Brasil, MT, Cláudia,\ Fazenda Continental ,\ 11.5841°S 55.3003°W,\ 365m, sweep, 17-19.vi.\ 2017, A.C. Domahovski " (DZUP) . Paratypes: 1♂, " Brasil, MT, Nova Ubirata ,\ E.S.E.C. Rio Ronuro,\ 13.1122°S 54.4436°W,\ 330m, malaise, 11-16.vi.\ 2017, Cavichioli, Melo,\ Domahovski & Muniz" (DZUP) ; 1♂, 1♀, " Brasil, MT, Novo Mundo, Pq. [Parque]\ Est. [ Estadual ] do Cristalino , 09.4517°S 55.8396°W, 240m, malaise,\ 21-25.vi.2017, Cavichioli,\ Melo, Domahovski & Muniz" (DZUP) ; 1♀, " Brasil, MT, Novo Mundo,\ Pq. Est. do Cristalino ,\ 09.4517°S 55.8396°W,\ 240m, luminárias - aloja-\ mento AC Domahovski" (DZUP). - Rondônia : 6♂, " Brasil, Rondônia, Porto \ Velho , Rio Madeira \ 09°35′29″S 65°02′57″W \ Malaise 28.III-8.IV.2011 \ Silva & Albuquerque" (3♂ DZRJ, 3♂ MNRJ) ; 7♂, " Brasil, Rondônia, Porto \ Velho , Rio Madeira \ 09°38′06″S 65°27′11″W \ Malaise 05-17.I.2011 \ RRSilva & RSProbst leg" (MZSP) ; 2♂, " Brasil, Rondônia, Porto \ Velho , Rio Madeira \ 09°35′54″S 65°02′53″W \ Malaise 18-29.VI.2011 \ Albuquerque & Ferreira" (DZUP) ; 1♂, same data as preceding except 09°35′29″S 65°02′57″W (DZUP) ; 1♀, same data as preceding except 09°26′08″S 64°48′9″W (DZUP) ; 16♂, " Brasil, Rondônia, Porto \ Velho , Rio Madeira \ 09°35′29″S 65°02′57″W \ Malaise 04-17.I.2012 \ W. Datilo & G. R. Mazão” (6♂ DZUP, 10♂ MZSP) ; 8♂, " Brasil, Rondônia, Porto \ Velho , Rio Madeira \ 09°26′14″S 64°49′58″W \ Malaise 04-18.IX.2012 \ MA Ullysséa & LP Prado" (MZSP) ; 3♂, same data as preceding except 09°38′06″S 65°27′11″W (MZSP) ; 1♂, same data as preceding except 09°35′29″S 65°02′57″W (MZSP) .

Etymology.

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

Remarks.

Coarctana oricula sp. nov. (Fig. 7 ) was strongly supported as sister to C. taurina sp. nov. (SR = 99). This relationship was supported by one synapomorphy, 137:0, aedeagal shaft with a conspicuous basolateral expansion that surrounds the previous portion of the shaft, and eight homoplastic characters, as for example, 87:0, valve more than 2 × wider than long and 133:1, apodemal processes of aedeagus, having a lateral process on external margin near mid-length. Coarctana oricula sp. nov. can be easily differentiated by the style (Fig. 23K ) with a hook-shaped apex, the apodemal processes of aedeagus (Fig. 23L, M ) with the process on external surface rounded, the aedeagal shaft with several minute spiniform processes on posterior surface, and the presence of a pair of long apical processes directed ventrally.

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 23. Coarctana oricula 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 24. Coarctana oricula 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 31. Species of Coarctana gen. nov., dorsal (left) and lateral (right) views. A, B C. apena comb. nov., holotype male, AMNH. C, D C. asymmetrica sp. nov., holotype male, DZUP. E, F C. glabra sp. nov., holotype male, DZRJ. G, H C. nigromedia sp. nov., holotype male, DZUP. I, J C. occultata sp. nov., holotype male, DZUP. K, L C. oricula sp. nov., holotype male, DZUP. M, N C. parvula sp. nov., holotype male, DZUP.