Analysis of Telebasis Selys, 1865 - Part I. (Odonata: Coenagrionidae) Author Lencioni, F. A. A. text Zootaxa 2023 2023-02-13 5239 4 500 520 http://dx.doi.org/10.11646/zootaxa.5239.4.3 journal article 10.11646/zootaxa.5239.4.3 1175-5326 7635170 5F1C330D-6344-4A7C-AD67-87F880D832F1 Helveciagrion Machado, 1980 Fig. 5 (♁ app., posterior view). Fig. 6 (♁ app., lateral view). Fig. 7 ( ♀ prothorax, dorsal view). Fig. 8 (tandem pair), Fig. 9 (detail of the contact between cercus and mesepisternal fossae), Fig. 10 (live specimen), Type species. Helveciagrion vulcanoae Machado, 1980 , by original designation ( Machado 1980 ). Etymology : Helveciagrion = Helvecio , after Dom Helvecio Gomes de Oliveira (b. 1876, d. 1960), Former Archbishop of Mariana–MG + agrion , neuter form of agrios (ἄγριος) meaning “wild”, which in damselflies is now used as an indicator that a genus belongs to the Coenagrionidae ( Fliedner 2006 ) . FIGURE 5 . Helveciagrion obsoletum —male appendages in posterior view, showing a pair of heavily sclerotized tubercles. FIGURE 6. Helveciagrion obsoletum —male appendages in lateral view, showing a pair of heavily sclerotized tubercles. FIGURE 7. Helveciagrion obsoletum —female thorax in dorsal view, showing the mesepisternal fossae where male tubercles fit. FIGURE 8. Tandem pair of Helveciagrion obsoletum . FIGURE 9. Detail of the contact between cercus and mesepisternal fossae. FIGURE 10 . Helveciagrion obsoletum male, Brotas—S.P., 17.i.2012 (FAAL). Generic characterization. Medium sized Coenagrionidae ( 30–38 mm ), angulated frons, male cercus approximate at the base, with a pair of heavily sclerotized tubercles of different sizes ( Fig. 5–6 ) that fit the pair of mesepisternal fossae in the pterothorax of the female ( Fig. 7 , 9 ), paraprocts subequal to or longer than cercus, female lacking flap–like structures on anterior margin of prothorax and lacking mesanepisternal groove. Anterior part of female pterothorax with a pair of mesepisternal fossae ( Fig. 7 ). Penis long and narrow, with inner fold small, S 3 in lateral view expanded laterally, rounded, or triangular–shaped and lacking accessory lobes or processes, ectal region of S3 without lateral fold. Species included : Helveciagrion boomsmae ( Garrison, 1994 ) comb. nov. ; Helveciagrion collopistes ( Calvert, 1902 ) comb. nov. ; Helveciagrion garrisoni ( Bick & Bick, 1995 ) comb. nov. ; Helveciagrion obsoletum (Selys, 1876) ; Helveciagrion rojinegra ( Haber, 2020 ) comb. nov. ; Helveciagrion simulacrum ( Calvert, 1909 ) ; Helveciagrion vulcanoae Machado, 1980 ; Helveciagrion williamsoni ( Garrison, 2009 ) comb. nov. Distribution . From Mexico to Argentina . For species identification: Garrison (2009) and Haber (2020) . In addition to the original description, I examined specimens of the following species: H. obsoletum 1♁—(NC 16)— Brazil : Miranda (Salobra)—MS, 20° 12′ 10′′ S & 56° 32′ 53′′ W , 1–2/1941, Leg. C.I.O. Cruz (exchange—Ex- MNRJ collection (nº 18640)); H. obsoletum 1♁, 1♀ —(NC 3346)— Bolivia : Santa Cruz Dept., San Ramon, Rio San Julian, 16º 38′ 43″ S & 62º 30′ 32″ W , 215 m , 12.viii.2003 , Leg. F.A.A. Lencioni; H. obsoletum 1♁—(NC 3367)— Bolivia : Santa Cruz Dept., San Ramon, Rio San Julian, 16º 38′ 43″ S & 62º 30′ 32″ W , 215 m , 12.viii.2003 , Leg. F.A.A. Lencioni; H. obsoletum 1♀ —(NC 3372)— Bolivia : Santa Cruz Dept., San Ramon, Rio San Julian, 16º 38′ 43″ S & 62º 30′ 32″ W , 215 m , 12.viii.2003 , Leg. F.A.A. Lencioni; H. obsoletum 1♀ —(NC 3698)— Bolivia : Beni Dept., Trinidad , forest N of town, 14° 45′ 1.5″ S & 64° 57′ 20.7″ W , 21.viii.2003 , Leg. F.A.A. Lencioni; H. vulcanoae 1♁—(NC 26)— Brazil : Lagoa Santa—MG, 02.xi.1966 , Leg. N. Santos, J. Machado e J. Martins (exchange—MNRJ—Exc. 303—col. 10); H. vulcanoae 1♁—(NC 79)— Brazil : Marliéria—MG, Dom Helvécio lake, 19° 47′ 5′′ S & 42° 35′ 15′′ W , 18–22.v.1980 , Leg. Angelo Machado (donation— paratype ); H. williamsoni 2♁♁—(NC 8)— Venezuela : Zulia State , Encontrados, 9° 3′ 40 ‘′ N & 72° 14′ 8′′ W , 25.iv.1920 , Leg. J.H. Williamson et al (donation).