Chlorotabanus leuconotus, Krolow, Tiago Kütter & Henriques, Augusto Loureiro, 2010

Krolow, Tiago Kütter & Henriques, Augusto Loureiro, 2010, Taxonomic revision of the New World genus Chlorotabanus Lutz, 1913 (Diptera: Tabanidae), Zootaxa 2656, pp. 1-40 : 21-24

Chlorotabanus leuconotus n. sp.

( Figure 8 A–I)

Type locality: Brazil (AM, Manaus).

Diagnosis: Medium sized (11.9–14.6 mm). Frons slightly convergent towards base. Flagellum of the antenna with basal plate slightly elongate about 1.5x stylus length. Thorax grayish-white and whitish pilosity. Abdomen greenish-yellow with whitish pilosity. Hyaline wing, except for the slight darkening of the costal cell.

Description (Holotype Ψ): Body length 13.1 mm ( Fig. 8 A–B); wing length 11.2 mm; wing width 3.7 mm.

Head ( Fig. 8 C): Eyes reddish. Frons with small rise at the mid basal region, with parallel sides slightly convergent at the base, F.I. 5.8, D.I. 1.3, pruinosity yellowish-brown and whitish-yellow pilosity. Subcallus, parafacialia, gena and face with pruinosity and pilosity as frons. Yellowish palpus with whitish-yellow hairs and some small black hairs. Proboscis with dark-yellowish theca; labella dark-green almost black. Antenna ( Fig. 8 D), with proximal region of the flagellum forming a slight dorsal projection. Basal plate slightly elongate, about 1.5x stylus length, B.P.I. 1.5, Flg.I. 1.4.

Thorax: Scutum with dark-brown integument, grayish-white pruinosity and whitish hairs. Slender legs; coxae, trochanters and femora greenish with whitish-yellow hairs; fore tibia covered with black hairs at a greater density on the apical 1/3; mid tibia with few black hairs and lower density than the fore tibia; hind tibia with dense black hairs on the distal half; fore and hind tarsomeres with dense black hairs dorsally; mid tarsomere with fewer black hairs dorsally. Hyaline wing ( Fig. 8 E), except for the slightly darkened basal costal and costal cells. Pterostigma yellowish. Veins greenish-yellow.

Abdomen: Greenish-yellow covered by whitish pilosity, except at tergites 5, 6 and 7, which have few black hairs.

Variations Paratypes: Body length 11.9–14.6 mm (X = 13.3 mm, N = 20); wing length 10.0– 12.2 mm (X = 11.1 mm, N = 20); wing width 3.2–4.0 mm (X = 3.5 mm, N = 20); F.I. 5.4–7.3 (X = 6.1, N = 20); D.I. 1.2– 1.5 (X = 1.3, N = 20); B.P.I. 1.3–1.7 (X = 1.5, N = 20); Flg.I. 1.3–1.7 (X = 1.4, N = 20).

Male: ( Fig. 8 F–G) body length 12.5–13.2 mm (X = 12.9 mm, N = 3); wing length 9.8–11.5 mm (X = 10.6 mm, N = 3); wing width 3.2–3.6 mm (X = 3.3 mm, N = 3). Similar to the female, except for the following: holoptic eyes ( Fig. 8 H), where largest ommatidia occupy the upper 2/3 and the smallest ommatidia the lower 1/3. Ocellar tubercle absent, with a small gap here. Palpus porrect, yellowish with whitish-yellow hairs and 2- 3 black hairs near the apex of the second palpal segment. Antenna ( Fig. 8 I) with stylus subequal to basal plate, B.P.I. 1.3–1.4 (X = 1.3, N = 3), Flg.I. 1.0–1.0 (X = 1.0, N = 3).

Distribution: Colombia, Guyana, French Guiana, Brazil (Roraima, Amazonas, Pará, Maranhão, Rondônia); Peru (Madre de Dios).

Holotype Ψ: deposited at INPA, in perfect condition.

Type-material: Holotype. “ Brasil, AM, Manaus, ZF\-2 km-34, Base LBA,\ 02º35’37’’S – 60°12’39’’W ” “ 09–10.vii.2008, arm. luz no\ dossel 30 mts, J. A. Rafael\ & F. F. Xavier F°.” (Ψ INPA); 35 Paratypes. “ BRASIL, Amazonas,\ Maués, Rio Abacaxis,\ 05°15’09’’S – 58°41’52’’W ” “ 27–29.v.2008. J. A. Rafael e equipe Malaise” (2Ψ INPA); “ BRASIL, Amazonas, Rio\ Abacaxis, 05°15’09’’S –\ 58°41’52’’W, 35m ” “ 27– 29.v.2008, J. A. Rafael\ e equipe, Arm. luz sobre\ o barco” (2Ψ INPA); “ BRASIL, AM[azonas], Maués, Rio\ Abacaxis, Campina\ Pacamiri, 04°35’49’’S –’’ “ 58°13’14’’W, 30–31.v.2008 \ J. A. Rafael e equipe \ arm. Malaise na mata” (5Ψ INPA); “ BRASIL, AM[azonas], Borba, Rio\ Abacaxis, Paxiúba\ 04°28’48’’S – 58°34’24’’W ” “ 02–04.vi.2008, J. A. Rafael\ e equipe, armadilha\ luminosa no barco” (1Ψ INPA); “ BRASIL, AM[azonas], Borba, Rio\ Abacaxis, Paxiúba\ 04°28’48’’S – 58°34’24’’W ” “ 02–04.vi.2008, J. A. Rafael\ e equipe, armadilha\ suspensa dossel, 25mts” (3Ψ INPA); “ BRASIL, Amazonas,\ Borba, Rio Abacaxis,\ 05°15’09’’S – 58°41’42’’W ” “ 35m, 27–29.v.2008, J. A.\ Rafael e equipe), Malaise” (3Ψ INPA); “ BRASIL, AM[azonas], Manaus, ZF-\ 2 km-34, Base LBA,\ 02°35’37’’S – 60°12’39’’W ” “ 09–10.vii.2008, arm. luz\ nível do solo, J. A. Rafael\ & F. F. Xavier F°” (1Ψ INPA); “ BRASIL, AM[azonas], Manaus, ZF2\ km-14, Torre, 023521S -\ 600655W, 16–19.vii.2004 ” “Arm. Malaise, J. A. Rafael\ F. F. Xavier F° & J. M. Ribeiro” (1Ψ INPA); “ BRASIL, AM[azonas], MANAUS\ AM 0 10 km 54 BI-2\ 024533S; 595103W\ 22.vii.1997 \ 18– 19:00 horas” “Flanco/Tapirus\ Clareira\ R. L. M. Ferreira\ A. L. Henriques &\ J. F. Vidal cols” (5Ψ INPA); “ BRASIL, AM[azonas], MANAUS\ AM 0 10 km-54 BI-2\ 024533S; 595103W\ 12–23.vii.1997 ” “Baixa\ Suspensa/Clareira\ R. L. M. Ferreira\ A. L. Henriques &\ J. F. Vidal cols.” (2Ψ INPA); “ BRASIL, Amazonas,\ AM 240, km 24\ 2°00’55’’S 59°49’40’’W \ viii.2005 ” “Luz mista mercúrio\ Xavier-Filho Leg.” (2Ψ INPA); “ BRASIL, RO[Rondônia], Guaporé\ 121319 S - 603244W\ 23.iv.2006, J. A. Rafael &\ F. F. Xavier F°, arm. Luz” (1Ψ INPA); “ BRASIL, MA[Maranhão], Mirador\ Parq.[ue] Ecol.[ógico] Mirador\ isca: eqüina” “ 12– 13.vi.1998 \ FL Oliveira & AB\ Albuquerque, cols” (2Ψ CZMA); “ Brasil Pará\ Mun. Benevides\ PA- 408 km 06\ 19.vi.1980 ” “I. S. Gorayeb\ F. F. Ramos\ E. L. Oliveira” “18:00–18:30” “ Chlorotabanus \ leucochlorus Fchld \ det. Fairchild 1981” (1Ψ MPEG); “ British Guiana:\ Essequibo R.,\ Moraballi Creek\, 20.xi.1929,\ Oxf. Univ. Expedn.,\ B.M. 1929-485” “See notes” (1Ψ NHM); “ GUYANE Française\ Mission M. Boulard\ et P. Pompanon\ Muséum PARIS ” “Saint Elie\ 30.viii–2.ix.1975 ” (3Ψ MNHN).

Additional material examined: COLOMBIA. Frontiere Dept. Putumayo: (Amazonas, Puerto Narino), 18.ix.1973 (J. Desplates), 1Ψ ( MNHN); GUIANA FRANCESA. [Cayenne]: Saint Elie, 30.viii–2.ix.1975 (Mission M. Boulard et P. Pompanon), 4Ψ ( MNHN); PERU. Madre de Dios (Manu, Concha Salvador 10km s. Pakitza, 12°07’S; 70°58’W, 250m), 13–14.ix.1988 (Flint & Friedburg) 1Ψ ( USNM); BRAZIL. RR[Roraima]: Serra Pacaraima (BR 174, 042704 N; 610756W, 800m, em cavalo), 01–07.ix.1995 (A. L. Henriques & J. Vidal), 1Ψ ( INPA); Surucucu (C. Geral), 21.xi.1991 (W. Barbosa), 1Ψ ( INPA); AM[Amazonas]: Borba (Rio Abacaxis, Paxiúba, 042848 S; 583424W, armadilha suspensa dossel, 25mts), 02–04.vi.2008 (J. A. Rafael e equipe), 1Ψ ( INPA); idem (Rio Abacaxis, 051509 S; 584152W, 35m, Malaise), 27–29.v.2008 (J. A. Rafael e equipe), 2Ψ ( INPA); Carauari (050431 S; 671011W, Malaise em igarapé), vii.2005 (A. Henriques & Xavier- Filho), 1Ψ ( INPA); Coari (Duto Urucu, Porto Terminal, 045016S; 652036W, a luz mista de mercúrio), 12– 21.vi.1996 (P. F. Bührnheim, N. O. Aguiar, A. M. R. Arruda & T. L. Gualberto), 2Ψ ( INPA); idem (Rio Urucu, Ig. Marta-3, 045007S; 650237W, a luz mista de mercúrio), 14–25.viii.1993 (P. F. Bührnheim), 2ɗ ( INPA); Manaus (Reserva Ducke), 24.vi.1970 (Vivaldo), 2Ψ ( MPEG); idem (AM 0 10, km 54, BI-2, 024533S; 595103W, 18–19:00 horas, Flanco/Tapirus, Clareira), 22.vii.1997 (R. L. M. Ferreira, A. L. Henriques & J. F. Vidal), 1Ψ ( INPA); Maués (Rio Abacaxis, Campina Pacamiri, 043549S; 581314W, arm. Malaise na mata) 30– 31.v.2008 (J. A. Rafael e equipe), 1Ψ ( INPA); Novo Airão (Pq[parque] N.[acional] [do] Jau, Ig. Miratucu/ Ig. do Gerlei, 015700S; 614900W, Arm. Malaise), 23–28.vii.1995 (J. A. Rafael & J. Vidal), 1Ψ ( INPA); idem (Rio Carbinani, Ig. Ipiranga, 020305 S; 613332W, Arm. Malaise), 29–31.vii.1995 (J. A. Rafael & J. Vidal), 1Ψ ( INPA); Uarini (030257 S; 654142W, a luz mista de mercúrio), 22.vii–03.viii.1995 (P. F. Bührnheim, N. O. Aguiar, A. & al.), 1ɗ ( INPA); PA[Pará]: Rio Poana (acima da Cach. seca), 09.x. [19]85 (Eq. Comander), 4Ψ ( INPA); MA[Maranhão]: Mirador (Parq.[ue] Ecol.[ógico] Mirador, isca eqüina), 12–13.vi.1998 (F. L.

Oliveira & A. B. Albuquerque), 1Ψ ( CZMA); idem (Parque do Mirador, Base da Geraldina, armadilha luminosa), 03–07.v.2008 (F. Limeira de Oliveira), 1Ψ ( CZMA); RO[Rondônia]: Vilhena (124655S; 602218W, arm. luz), 25.iv.2006 (J. A. Rafael & F. F. Xavier F°), 1Ψ ( INPA).

Etymology: From the Greek, “ leukos” which means white, and “ notos” which means dorsal.

Discussion: The widened frons and the yellowish coloring of C. parviceps and C. ochreus separate them from C. leuconotus n. sp. The hyaline wing of C. leuconotus n. sp. separates it from C. crepuscularis , C. mexicanus and C. fairchildi , which have evident spots in the wings. C. flagellatus and C. falsiflagellatus n. sp. have elongate basal plates and short stylus, while C. leuconotus n. sp. with basal plate subequal to stylus length. The basal plate can also be used to differentiate C. microceratus n. sp., with short and high plate. C. inanis has yellowish pilosity and hyaline wing with veins that are darker at the intersections, while C. leuconotus n. sp. has hyaline wings and whitish pilosity. C. leuconotus n. sp. can be confused with C. leucochlorus due to the whitish pilosity, but C. leucochlorus can be separated by the black hairs on the notopleural lobe and the elongated basal plate of the antenna.

Figures

FIGURE 8. Chlorotabanus leuconotus sp. nov. (A – C Holotype Ψ; D – E Ψ; F – I ♂): A – B, F – G, Body (dorsal and lateral views); C and H, Head (frontal view); D and I, Antenna (lateral view); E, Wing (dorsal view).