Marganana (Declivana) tetramaculata, Domahovski & Cavichioli, 2022

Domahovski, Alexandre Cruz & Cavichioli, Rodney Ramiro, 2022, A new species of Marganana (Declivana) (Hemiptera: Cicadellidae: Gyponini), the first record of the genus from Brazil, Papéis Avulsos de Zoologia (Pap. Avulsos Zool., S. Paulo) 62, pp. 1-7 : 2-6

Marganana (Declivana) tetramaculata sp. nov. Figs. 1-24

Diagnosis: Pronotum ( Fig. 1 ) with four round black spots; apex of pygofer ( Fig. 7 ) bearing rounded process with ventral margin serrated; style ( Fig. 12 ) with ventral margin of blade serrated and produced subapically; aedeagus ( Fig. 14 ) with pair of long filiform subapical processes, approximately half the length of shaft.

Measurements (mm): Total length: Holotype male: 8.8. Paratype males (n = 9): 7.9-9.1. Paratype female (n = 3): 8.9-9.8.

Description

Coloration: Head and thorax ( Figs.1 , 23 )yellowish-brown. Crown ( Fig. 1 ) without maculae, black striae on anterior margin. Ocellus black. Pronotum ( Fig. 1 ) with four black spots, one pair behind each eye, near anterior margin; posterior margin black.Proepimeron( Fig.3 )without maculae. Face ( Fig. 2 ) yellow; black maculae between base of antenna and eye margin. Forewing ( Figs. 4 , 23 ) translucent yellow; black markings on base of clavus, apex of anal veins and crossveins of discal cells; apex of clavus and base of appendix smoky hyaline.Legs ( Fig. 24 ) entirely yellow, metatibia AD row with few black macrosetae.

Head: In dorsal view ( Figs. 1 , 23 ), not produced; median length approximately ⅓ of interocular width; transocular width slightly wider than maximum pronotum width; crown with parallel transverse striae;anterior and posterior margins nearly parallel; anterior margin not produced over margin of eye.Ocellus small,distinctly closer to median line than to eye margin and equidistant to anterior and posterior margins of crown. In ventral view ( Fig. 2 ), face almost 2× as wide as long; distance between frontogenal suture and eye margin equivalent to 1.5× clypeus width, suture extending toward antennal ledge but not reaching anterior margin of crown; antennal ledge carinate,almost parallel to anterior margin; frons small and triangular, approximately as long as wide, surface with texture shagreen,not excavated below anterior margin of crown;epistomal suture indistinct;maxillary plate projected ventrally, extended as far as clypeus apex; gena wide with short pubescence, ventrolateral margin rounded and weakly excavated below eye margin; clypeus 1.7× longer than wide, lateral margins weakly divergent towards apex. In lateral view ( Figs. 3 , 24 ), crown-face transition thick, with 6-7 parallel striae; frons and clypeus not inflated.

Thorax: Pronotum, in dorsal view ( Fig. 1 , 23 ), with transverse striae except near anterior margin, lateral margins shorter than eye length, almost parallel, anterior margin broadly rounded, posterior margin slightly excavated; in lateral view ( Figs. 3 , 24 ), strongly declivous and convex, continuous with head declivity. Exposed portion of mesonotum ( Figs. 1 , 23 ) approximately as long as wide. Scutellum inflated in lateral view ( Fig. 3 ).

Wings: Forewing ( Fig. 4 ) narrow, 4× longer than wide; venation distinct, extra numerary veins absent; section of vein M between R+M fork and crossvein m-cu ₁ as long as the length of m-cu ₁; 3 subapical cells and 5 apical cells (R1 vein present); appendix well developed, wider than maximum width of first apical cell and bordering first and second apical cells; apex rounded.

Legs: Profemur 3× longer than wide; AD, AM, and PD rows reduced and poorly defined, except for apical setae AD₁, AM₁ and PD₁ respectively; AV and PV rows formed by 5-6 setae; IC row formed by slightly arched comb of fine setae, beginning at distal third of femur and extending to AM₁. Protibia, in cross-section, more or less cylindrical, with longitudinal carina adjacent to PD row; AV row with setae of basal half short and thin, apical half with 4 long and thick setae; AD row formed by several small, undifferentiated setae; PD row with 3 long setae and undifferentiated setae; dorsal surface with apical setae AD₁ and PD₁ developed; PV row with undifferentiated setae and 4 long setae on apical half. Metafemur with setal formula 2:2:1. Metatibia rows PD, AD, and AV with 21-22, 12, and 10-11 macrosetae respectively; AD row without intercalary setae between macrosetae; PV row with setae of apical half formed by sequence of 1 thicker and 4-5 thinner setae, ending with 2 small and thin setae after the last long and thick seta. Metatarsomere I inner row of plantar surface with 5-6 very small non-cucullate setae; outer row absent;apex with 4 patellae flanked by tapered lateral seta. Metarsomere II pecten with 2 platellae flanked by 2 tapered lateral setae on inner and 1 on external corner.

Male terminalia: Sternite VIII( Fig.5 )1.4× wider than long; lateral margins weakly convergent posterad; posterior margin almost straight, with small round projection medially. Valve ( Fig. 6 ) 2.2× wider than long; posterior margin deeply and broadly excavated. Pygofer ( Fig. 7 ) 1.7× longer than maximum height; dorsal margin oblique and almost straight; anteroventral margin broadly rounded; apex tapered and rounded with few macrosetae, inner surface bearing rounded process with ventral margin serrated. Subgenital plate, in lateral view ( Fig. 7 ), with apex not surpassing pygofer apex; in ventral view ( Fig. 8 ), 3.3× longer than wide, without microsetae; lateral margins rounded; apex weakly tapered and rounded. Connective ( Figs. 9, 10 ) T-shaped, about as wide as long; dorsal keel strongly developed; stalk long and narrow, as long as arm length. Style, in dorsal view ( Fig. 11 ), with outer lobe well developed and truncated; blade widened subapically; in lateral view ( Fig. 12 ), with apodeme slender; blade approximately straight; ventral margin produced subapically and serrated; apex slightly curved dorsally and subacute. Aedeagus ( Figs. 13, 14 ) preatrium weakly developed; dorsal apodeme developed and produced dorsally, dorsal margin straight, lateral margins not produced laterally; shaft long and thin, directed posterodorsally at base; apex with pair of long filiform subapical processes with half length of shaft, directed ventrally.

Female terminalia: Sternite VII ( Figs. 15, 16 ) 2.6× wider than long; posterolateral angles rounded, posterior margin with median third deeply excavated. Pygofer ( Figs. 15, 16 ) about 2× longer than maximum height; posterodorsal margin straight; ventral margin weakly rounded; few macrosetae dispersed on dorsoapical fourth and ventroapical half; apex obliquely truncated. Internal sternite VIII membranous. First valvifer ( Fig. 17 ) triangular, 2.5× longer than wide, anterior and dorsal margins rounded, posterior margin straight. First valvula ( Fig. 17 ) slightly curved dorsally, slender, not broadened medially, 9× longer than wide, fused each other by sclerotized expansion of basal portion; ventral interlocking device long, extending over basal ¾; dorsal sculptured area strigate; apical portion ( Fig. 18 ) tapered and subacute. Second valvula ( Fig. 19 ), 10× longer than wide, not broadened medially; dorsal protuberance absent; dorsal margin with about 10-12 rounded teeth on apical half of blade; apical portion ( Fig. 20 ) gradually tapered to subacute apex; ventral margin without denticles. Second valvifer ( Fig.21 ) 2.8× longer than wide.Gonoplac ( Fig.21 ), 5× longer than wide; dorsoapical margin straight, with 1\3 length of gonoplac; ventral margin and apical potion ( Figs. 21, 22 ) with dentiform cuticular projections and scattered short setae; apex tapered and rounded.

Etymology: The species epithet, tetramaculata , refers to the four black spots on the pronotum.

Material examined

Holotype male: " Brasil, MT, Nova Ubiratã,\ E.S.E.C. Rio Ronuro ,\ 13.1122°S 54.4436°W, 330m,\ light trap, 11-16. vi.2017, RR\ Cavichioli & AC Domahovski″ ( DZUP).

Paratypes: MATO GROSSO: 1♂, same data of holotype ( DZUP) ; 1♂, " Brasil, Mato Grosso \ Sinop \ X.1975 \ M. Alvarenga ″ ( DZUP) ; MARANHÃO: 1♂, " Brasil, MA, Caxias \ Res. Ecol. Inhamum \ LenÇol e luz mista \ 01-03.ix.2005 F. Limeira \ -de-Oliveira col.″ ( CZMA) ; 1♂, " Brasil (MA), Carolina \ PARNA Chapada das Mesas,\ Riacho Corrente, 288m \ 07°04′24.2S / 47°05′25.2″W ″, " Armadilha de Malaise \ 10-20.vi.2014, J. A. Rafael , \ F. Limeira-deOliveira, T. L.\ Rocha & G. A. Reis, cols.″ ( CZMA) ; 1♂, " Brasil (MA), Carolina\ PARNA Chapada das Mesas, \ Riacho Cancela, 225m \ 07°06′42.2S \ 47°17′56.8″W ″, " Armadilha de Malaise \ 20-31.viii.2013; J.A. Rafael \ F.Limeira-deOliveira & \ T. T. A. Silva, cols.″ ( CZMA); 1♀, " Brasil (MA), Bom Jardim \ REBIO-Res. Biol Gurupi \ Armad. Luminosa ″, " 02-11.ix.2010, F.Limei \ ra-de-Oliveira J.C.Silva \ J.A.Silva & M.M. Abreu ″ ( CZMA). AMAZONAS: 1♂, "Petrobras, RUC 31, rio \ Urucu, Coari, AM, Brasil \ 1.xi.2008 \ Fernandes, J.A.M.″, "RCU 31 – Mata \ S04°50′16.3″ \ W065°16′57.8″ \ Armadilha luminosa Luz mista \ vapor Hg e Luz negra″ ( INPA). PARÁ: 1♂, " Brasil, Pará \ MelgaÇo ECFPn \ 30-IX a 09-X-97 \ M. Zanuto col.″, " MPEG 05029286 ″ ( MPEG) ; 1♂, 2♀, " Brasil, Pará \ MelgaÇo \ Flona Caxiuanã \ 14.V.2011 Arm. Luminosa \ A.L. Nunes e equipe″, " Acampamento \ Lat : 01°57′36.82″S \ Long : 51°36′47.61″W ″," CZDC UEPA \ 00003697, 00003714 and 00003715″ ( CZJA) ; 1♂, " Brasil, Pará, Paragominas \ Parque Ambiental \ 14. V.2011 R. varredura \ C.E. Braga ″," CZDC UEPA \ 00003297″ ( CZJA) .

Remarks: The new species can be easily differentiated from M. equata by the diagnostics characters cited above, especially the style strongly expanded subapically ( Fig.12 ) and the aedeagus with long apical processes ( Fig. 14 ).

Figures

Figures1-14. Margananatetramaculatasp.nov.,holotype male.(1) headandthorax,dorsalview.(2)head,ventral view.(3)headand thorax,lateral view.(4) forewing. (5) sternite VIII, ventral view. (6) valve, ventral view. (7) pygofer, valve and subgenital plate, lateral view. (8) subgenital plate, ventral view. (9) connective, dorsalview.(10)connective,lateral view.(11) style,dorsal view.(12)style,lateral view.(13)aedeagus,lateralview.(14) aedeagus,posterior view.Scale bars:inmm.

Figures 15-22.Marganana tetramaculata sp. nov., paratype female. (15) distal portion of abdomen, ventral view. (16) distal portion of abdomen, lateral view. (17)first valvifer and first valvula,lateral view.(18)apical portion of first valvula.(19) second valvula,lateral view.(20) apical portionof secondvalvula.(21) second valvifer and gonoplac,lateral view.(22)apical portion of gonoplac.Scale bars:in mm.

Figures 23-24. Habitus of holotype.(23)dorsal view.(24) lateral view.Scale bars:in mm.