Barolineocerus bispinus Freytag, 2008

Praciano, Daniel Lucas, Dietrich, Christopher H. & Takiya, Daniela Maeda, 2025, Taxonomic revision of the Neotropical leafhopper genus Barolineocerus Freytag, 2008 (Hemiptera: Cicadellidae: Eurymelinae: Chiasmodolini), with descriptions of three new species and an updated key to species, Zootaxa 5653 (4), pp. 451-485 : 462-466

Barolineocerus bispinus Freytag, 2008

(Figs. 1E–H, M–O, 2G–I, 8A–M, 9A–G)

Barolineocerus bispinus Freytag, 2008: 49 , figures 1, 3, 8–10.

Barolineocerus declivus Freytag, 2008: 52 , figures 14–16 syn. nov.

Type locality: 13 km W of Risquetout, Montsinéry-Tonnegrande, French Guiana.

Diagnosis (based on material collected in Brazil, French Guiana, and Peru). Pronotal macula almost extends to hind margin of pronotum (Figs. 1A, M, 2G). Claval macula extends to scutellum apex (Figs. 1A, M, 2G). Abdominal sternite II apodeme extending to posterior margin of sternite III ( Fig. 8B ). Pygofer posterior margin without short ventral process; without median process ( Figs. 8C–D ). Valve with anterior margin concave and posterior one convex ( Fig. 8E ). Subgenital plate without dorsal process; apex pointed ( Figs. 8F–G ).Aedeagus without dorsal median process; without dorsal subapical ridge; with pair of preapical ventral spine-like processes near base of gonopore ( Figs. 8K–M ). Anal tube, laterobasal process with base sinuous at anterior margin, apex distinctly pointed ( Figs. 8C–D ).

Measurements (mm). Males (n= 30), total length (to apex of forewing): 3.99–5.37; median length of crown: 0.18–0.33; length of crown close to eyes: 0.20–0.30; width of head: 1.57–1.99; width of crown between eyes: 0.88–1.19; length of pronotum: 0.42–0.64; length of scutellum: 0.82–1.19; width of pronotum: 1.51–1.83; width of scutellum: 1.11–1.47; length of face: 1.00–1.31; width of face between eyes: 0.89–1.18; distance between ocelli: 0.32–0.45; ocellocular distance: 0.23–0.31; length of clypeus: 0.32–0.46; basal width of clypeus: 0.21–0.30; apical width of clypeus: 0.30–0.41; length of forewing: 3.27–4.26.

Female genitalia (single specimen dissected). Sternite VII, about 2x wider than long ( Fig. 9B ). Pygofer higher than long; with sparse microsetae, without macrosetae ( Fig. 9A ). First valvifer about 2x longer than high ( Fig. 9C ). First valvula with dorsal sculptured area on apical half, with sculpturing elongate derived from a striated pattern ( Fig. 9C ); tapered towards the apex, apex rounded ( Fig. 9D ). Second valvifer about five times higher than long ( Fig. 9G ). Second valvula, dorsal margin with 16 teeth without denticles, in lateral view; duct area with maculose sculpturing; ventral margin slightly membranous, without preapical prominence or denticles ( Fig. 9E ); apex without denticles ( Fig. 9F ). Gonoplac with sparse microsetae distributed along ventral margin, in lateral view; without macrosetae; apex rounded ( Fig. 9G ). Other characters as in generic description.

Distribution. Brazil (Amazonas, Maranhão, Pará, Roraima); Ecuador (Orellana); French Guiana (Montsinéry-Tonnegrande, Régina, Roura, Saint-Laurent, Saül ); Peru (Madre de Dios).

Type examined. 1♂, holotype of Barolineocerus bispinus , “ FRENCH GUIANA:\ 13 km W of Risquetout \ 8-VI-2005, J. E. Eger &\ M. T. Messenger, coll.”, “N04°54.028'\ W052°34.494'\ MV light”, “Muséum Paris\ MNHN ( EH)\ 4092”, “ Holotype \ Barolineocerus \ bispinus \ P.H. Freytag 2006”, MNHN . 1♂, holotype of Barolineocerus declivus , “SAO FELIX\ DO XINGU\ 1–4-X-1975 ”, “Moyen XINGU (Brésil)\ Mission M.Boulard,\ P. Jauffret et P. Pompanon \ Muséum PARIS”, “Muséum Paris\ MNHN ( EH)\ 4094”, “ Holotype \ Barolineocerus \ declivus \ P. H. Freytag 2006”, “Muséum Paris\ MNHN ( EH)\ 4094”, MNHN .

Additional material. Brazil: 1♂, “BRASIL, Amazonas, Barcelos,\ R. [ Rio ] Aracá , boca do R. [ Rio ] Curuduri \ 00.09734°S 063.28952°W \ Takiya , Cavichioli & Rafael et al. ”, “ 18–19.vi.2010 \ Luz Sub-bosque\ Hora: 3–5:30h”, DZRJ ; 1♂, same data as preceding, “Hora: 21h”, DZRJ ; 1♂, same data as preceding, except: “Hora: 3–5:30h”, DZRJ ; 1♂, same data as preceding, except: “Hora: 21h”, DZRJ ; 1♂, 1♀, same data as preceding, except: “ 15– 19.VI.2010 Malaise\ Cavichioli, Rafael, Takiya et al. ”, MNRJ ; 1♂, 1♀, “BRASIL, Amazonas, Barcelos, \ Rio Padauari , Com. [ Comunidade ] Ararão / Arrinha \ 00.50487°N 064.05831°W \ 04–07.VI.2010 Malaise\ Cavichioli, Rafael, Takiya et al. ”, DZRJ ; 2♂, same data as preceding, except: “ 07–08.vi.2010 \ Luz Sub-bosque\ Hora: 03–06h”, DZRJ ; 1♂, 1♀, same data as preceding, except: “ 18–19.vi.2010 \ Hora: 03–5:30h”, DZRJ ; 1♂, “BRASIL, AM [ Amazonas ], Manaus, ZF2\ Km-14, 2º35'21"S \ 60º06'55"W, 1–15.xi.2016 \ Malaise grande 18m na torre\ J.A. Rafael & F.F. Xavier Fº”, DZRJ ; 3♂, same data as preceding, except: “ 24.xii.2017 – 8.i.2018, Malaise gde [grande]\ 8m alt [altura], lado poente, J.A. Rafael”, DZRJ ; 1♂, same data as preceding, except: “ 1–15.v.2018, Malaise gde, 8m alt [altura]\ poente, J.A. Rafael —Rede BIA”, MNRJ ; 1♂, same data as preceding, except: “ 2º35'21"S – 60º06'55"W,\ 9–24.ii.2018, Malaise grande, 8 m alt [altura],\ poente, J.A. Rafael—Rede BIA”, INPA ; 2♂, same data as preceding, except: “ 16–30.ix.2016,\ Malaise grande, 18 m na torre\ J.A. Rafael & F.F. Xavier Fº”, MNRJ ; 1♂, 1♀, same data as preceding, except: “ 08–24.xii.2017, Malaise grande, 24\ m alt [altura], lado poente, J.A. Rafael”, INPA ; 1♂, same data as preceding, except: “ 08–24.xii.2017, Malaise grande, 24\ m alt [altura] lado nascente, J.A. Rafael”, INPA ; 2♂, same data as preceding, except: “ 08–24.xii.2017, Malaise grande, 8\ m alt [altura], lado poente, J.A. Rafael”, INPA ; 4♂, 2♀, same data as preceding, except: “ 25.ii–13.iii.2018, Malaise gde [grande], 8m \ alt [altura], poente, J.A. Rafael—Rede BIA”, INPA ; 1♂, 1♀, same data as preceding, except: “ 25.ii–13.iii.2018, Malaise gde [grande], 16m \ alt [altura], poente, J.A. Rafael—Rede BIA”, INPA ; 4♂, 2♀, same data as preceding, except: “ 1–16.iv.2018, Malaise grande, 8m alt [altura],\ poente, J.A. Rafael—Rede BIA”, MNRJ ; 1♂, same data as preceding, except: “ 1–16.iv.2018, Malaise grande, 16m \ alt [altura], nascente, J.A. Rafael —Rede BIA”, INPA ; 1♂, 1♀, same data as preceding, except: “ 1–16.iv.2018, Malaise grande, 16m \ alt [altura], poente, J.A. Rafael—Rede BIA”, INPA ; 2♂, same data as preceding, except: “ 1–16.iv.2018, Malaise grande, 24m \ alt [altura], nascente, J.A. Rafael —Rede BIA”, INPA ; 1♂, same data as preceding, except: “ 1–16.iv.2018, Malaise grande, 24m \ alt [altura], poente, J.A. Rafael — Rede BIA”, INPA ; 4♂, 1♀, same data as preceding, except: “ 9–24.ii.2018, Malaise grande, 8m alt [altura]\, poente, J.A. Rafael—Rede BIA”, INPA ; 2♂, same data as preceding, except: “ 25.xi–08.xii.2018, Malaise grande,\ 24m alt [altura], lado nascente, J.A. Rafael”, INPA ; 2♂, same data as preceding, except: “ 25.xi–08.xii.2018, Malaise grande,\ 8m alt [altura], lado poente, J.A. Rafael”, INPA ; 1♂, 1♀, same data as preceding, except: “W, 18–31.i.2017, 18m ”, INPA ; 1♂, same data as preceding, except: “ Rod. [ Rodovia ] AM\ 010, km50, ZF-2, km27, próximo\ entrada LBA 02º35'S 60°06'W.\ 5–6.iii.2011. 21–00:00h. Arm. Luz\ dossel 35m. F. F. Xavier: R. Freitas ”, DZRJ ; 1♂, same data as preceding, except: “ Km 24, próximo\ à sede CPST, 02º35'S – 60º06'W.\ 5.iii.2011, 03–06:00h, Arm. Luz\ móvel. J.A. Rafael; J.T. Câmara;\ F.F. Xavier Filho leg”, INPA ; 1♂, “BRASIL, Amazonas, State \ Rio Abacaxis , 140km SE\ Borba , Maués 27.V.2008 \ 05°15'10"S 058°41'52"W \ J.A. Rafael, D.M. Takiya \ et al. Light florest 30m ”, DZRJ ; 1♂, “BRASIL, AM [Amazonas], Novo Airão \ AM 352 Ramal Km 10\ 02º42'56.5"S 60°56'26.7"W;\ 29–30.viii.2011 \ Armadilha luminosa móvel,\ 21:00–24:00 h. J.A.Rafael,\ D. Takiya & J.T.Câmara ”, DZRJ ; 1♂, 1♀, “BRASIL, AM [Amazonas], Itapiranga, Rod. [ Rodovia ]\ AM 363, km 111, Ramal Marubá \ 02º42'57"S 58°00'46"W.\ 7.x.2010. 00 às 03:00h. Arm. [Armadilha]\ luminosa dossel 30m. D. Ochoa \ R. Machado, M Guedes leg. ”, DZRJ ; 6♂, 4♀, “AM, Manaus, R. [Reserva Florestal Adolpho] Ducke \ 14–18.xi.2009 \ O. EVANGELISTA”, INPA ; 1♂, 1♀, “AMZF-2\ 19–21.xi.2009 \ O. EVANGELISTA”, INPA ; 1♂, “ Brasil (MA [Maranhão]), C. [Centro] N. [Novo do] Maranhão \ REBIO— Res. [Reserva] Biol. [Biológica] Gurupi \ 03°14'05"S \ 46°41'83"W”, “Arm. [Armadilha] Luminosa, 07–15.i.2011 \ F. Limeira-de-Oliveira, M.\ M. Abreu & E.A.S. Barbosa ”, CZMA ; 1♂, “ Santo Antonio [Antônio] do Tauà [ Tauá ]\ Pará, Brésil \ 7.x.1979 \ Michel BOULARD rec.\ Muséum Paris”, “Museum Paris\ MNHP( EH)\ 16202”, MNHN ; 1♀, same data as preceding, except: “ 7.x.1979 \ … MNHP( EH)\ 16165”, MNHN ; 1♂, same data as preceding, except: “ 7.x.1979 \ … MNHP( EH)\ 16201”, MNHN ; 1♂, same data except “6.8. x.1979 \ … MNHP ( EH)\ 16166”, MNHN ; 1♂, same data as preceding, except: “ Pl. 15.23. x.1979 \ … MNHP( EH)\ 16168” MNHN ; 1♂,“FLONA [ Floresta Nacional do Tapajós ]\ SUB BOSQUE\ 04/22”, DZRJ ; 1♂, “BRASIL, Roraima, EE\ Maracá , 2º Armadilha\ 1–15.2014 ( Cicadellidae )”, INPA . “BRASIL, RR, Alto \ Alegre, ESEC Maracá \ 3º21'59"N – 61º26'04"W \ 1–15.i.2016, R. Boldrini \ & J.A. Rafael, Malaise\ peq, Rede BIA”, INPA . ECUADOR: 1♂, 1♀, “ECUADOR: ORELLANA Province,\ Reserva Étnica Waorani, Transect \ Ent. , 1km S. Onkone Gare Camp,\ 220m 00 o 39'10"S 076 o 26'00"W ”, “ 09-Feb-1995, T.L.Erwin,\ et al., fogging, terra firme\ forest, lot#988, INHS. FRENCH GUIANA: 1♂, “GUYANE FRANÇAISE\ juillet.1984\ G.TAVAKILIAN REC.”, “ Route de Kaw \ PK 40”, “Piège\ lumineux”, “Museum Paris\ MNHP( EH)\ 16206”, “ B. [ Barolineocerus ] bispinus \ comp. [compared] type ”, MNHN ; 1♂, “GUYANE FRANÇAISE\ Pista Coralie \ 20.1.1985 \ PK 2 23.x.1992 \ L. Sènècaux ”, “Mus. (Musem) nat. (national) Hist. (History) nat. (natural)\ don de\ H. de Toulgoët ”, “Museum Paris\ MNHP( EH)\ 16195”, MNHN ; 1♂, “GUYANE FRANÇAISE\ 20.1.1985 \ G.TAVAKILIAN REC.”, “Route de Régina ”, “PK 85”, “Piège\ lumineux”, “Museum Paris\ MNHP( EH)\ 16199”, MNHN ; 1♂, “ ST [Saint]—LAURENT DU MARONI\ Piste Paul Isnard\ Pk 30 3-II-86”, “GUYANE Française 1986\ EXPED. H. DE TOULGOET\ B. et J. Lalanne Cassou \ Ch. Gibeaux ”, “Muséum Paris”, “ IDIOCERINAE \ det. C.H.Dietrich, 2002”, “Museum Paris\ MNHP( EH)\ 1619”, MNHN ; 1♂, same data as preceding, except: “ Pk 20 31-I-86”, “GUYANE Française 1986\ EXPED. H. DE TOULGOET\ B. et J. Lalanne Cassou \ Ch. Gibeaux ”, “Muséum Paris”, “Museum Paris\ MNHP( EH)\ 16193” , MNHN; 1♂, “ French Guiana: Bélvédère \ de Saül, 3°37'22"N 53°12'57"W, alt. 326 m \ Automatic light trap \ 15.ix.11\ SEAG [Société Entomologique Antilles Guyane] leg.”, DZRJ ; 1♂, 1♀, same data as preceding, except: “ Malaise trap top\ 06.ii.12\ SEAG [Société Entomologique Antilles Guyane] leg.”, DZRJ ; 1♂, same data as preceding, except: “ Malaise trap low\ 25.i.12\ SEAG [Société Entomologique Antilles Guyane] leg.”, DZRJ ; 1♂, same data as preceding, MNRJ ; 1♂, same data as preceding, except: “ Malaise trap low\ 11.ix.2011 \ SEAG [Société Entomologique Antilles Guyane] leg.”, MNRJ ; 1♂, same data as preceding, except: “ French Guiana: Montagne \ des Chevaux : 4°44'56"N – 52°26'28"W, alt. 75 m \ window trap \ 17.iv.2011 \ SEAG [Société Entomologique Antilles Guyane] leg.”, MNRJ ; 1♂, 1♀, same data as preceding, except: “ Malaise trap top\ 02.viii.11\ SEAG [Société Entomologique Antilles Guyane] leg.”, DZRJ . PERU: 1♂, “PERU, Madre de Dios, \ Tambopata, Res. Zone \ Tambopata ; Research Rio \ Tambopata ; 622 ft. \ 13°08.305'S – 69°36.502'W \ 3–7.x.2004 \ C.R.Bartlett ”, DZRJ .

Holotype condition. Body covered with sparse Lepidopteran scales.

Remarks. Freytag (2008) provided illustrations of the dorsal view of the head and thorax, male genital capsule (lateral view), subgenital plate (ventral view), connective, style and aedeagus (ventral view), and undissected female terminalia (ventral view) of B. bispinus ; and included an illustration of the male genital capsule (lateral view), subgenital plate (ventral view), connective, style, and aedeagus (ventral view) of B. declivus . Upon a thorough examination of the holotypes of B. declivus (Figs. 1M–O) and B. bispinus (Figs. 1E–H), we came to conclusion they are conspecific. Freytag’s (2008) diagnostic character for B. declivus describing an aedeagus without spines at the apex is inaccurate. The holotype, in fact, exhibits a short pair of ventroapical processes, akin to those observed in the type of B. bispinus . Furthermore, Freytag (2008) in his key to species, states that both B. declivus and B. bispinus have the subgenital plate rounded at the apex, as he illustrates in his figures ( Freytag 2008: Figs. 9 , 15 ), however both holotypes have plates with short, pointed apices (as in Fig. 8F ), but depending on the angle of observation one may miss this characteristic. The remaining aspects of male genitalia are indistinguishable between these two holotypes, with only minor variation noted in the shape of the basolateral processes of the anal tube. This process is slightly bent in B. declivus and straight in B. bispinus . Importantly, this same variation is observed among specimens examined from Brazil. Consequently, B. declivus is herein treated as a new synonym of B. bispinus . Specimens vary in the hind tibia AD row with 6–7 cucullate setae and PD row with 13–19 cucullate setae.

Barolineocerus bispinus is most similar to B. acius as noted in the Remarks on the latter. However, it can be distinguished from the latter by absence of the pair of ventral process on the pygofer posterior margin ( Fig. 8D ) and aedeagus without a dorsal median process on the aedeagal shaft ( Fig. 8K ).

Figures

FIGURE 8. Barolineocerus bispinus Freytag, 2008, male from Brazil, Amazonas, DZRJ. A, forewing. B, apodemes of sternite II, dorsal view. C, pygofer and anal tube, lateral view. D, pygofer and anal tube, posterior view. E, valve, ventral view. F, subgenital plate, lateral view. G, subgenital plate, ventral view. H, connective and style, dorsal view. I, connective, lateral view. J, style, lateral view. K, aedeagus, lateral view. L, aedeagus, posterior view. M, aedeagus shaft in detail, posterior view. Scale bars: A= 1.0 mm, B–L= 0.2 mm, M= 0.1 mm.

FIGURE 9. Barolineocerus bispinus Freytag, 2008, female from Ecuador, Orellana, INHS. A, pygofer and anal tube, lateral view. B, sternite VII, ventral view. C, first valvifer and first valvula, lateral view. D, apical portion of first valvula, lateral view. E, second valvula, lateral view. F, apical portion of second valvula, lateral view. G, second valvifer and gonoplac, lateral view. Scale bars: A= 0.5 mm, B–G= 0.2 mm.

FIGURE 15. Barolineocerus furcatus Freytag, 2008, male from Brazil, Rondônia, FSCA. A, forewing. B, apodemes of sternite II, dorsal view. C, pygofer and anal tube, lateral view. D, pygofer and anal tube, posterior view. E, pygofer process apex in detail, posterior view. F, valve, ventral view. G, subgenital plate, lateral view. H, subgenital plate, ventral view. I, connective and style, dorsal view. J, connective, lateral view. K, style, lateral view. L, aedeagus, lateral view. M, aedeagus, posterior view. N, aedeagus apex in detail, posterior view. ADS: aedeagal dorsal median spine. Scale bars: A= 1.0 mm, B–D= 0.5 mm, E–N= 0.2mm.