Minagrion Santos, 1965

Vilela, Diogo Silva, Anjos-Santos, Danielle, Koroiva, Ricardo, Cordero-Rivera, Adolfo & Guillermo-Ferreira, Rhainer, 2020, Revision of the genus Minagrion Santos, 1965 (Odonata: Coenagrionidae), Zootaxa 4786 (2), pp. 176-198: 179

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Minagrion Santos, 1965


Minagrion Santos, 1965 

Type species: Telagrion mecistogastrum Santos, 1965  by original designation.

Santos (1965b): 9 (genus proposed with M. mecistrogastrum  as the type species and including Agrion waltheri  , Telagrion ribeiroi  and M. caldense  sp. nov.);— Santos (1967): 7−9 (original description of M. canaanense  ♂ and ♀);— Garrison (1991): 13 (synonymic list);— Carvalho & Nessimian (1998): 13 (habit and habitats of larvae occurring in Rio de Janeiro State);— Costa & Mascarenhas (1998): 11 (Catalogue of types housed in the MNRJ, comments);— Costa et al. (2000): 12 (species list, records, distribution, references);— Lencioni (2004): 91−92 (relationships of Minagrion  with Telagrion  );— Costa et al. (2001): 437, 440, 446 (species list, mention of M. ribeiroi  );— Lencioni (2006): 17, 43, 169−173 (diagnosis, illustrations, distribution);— Heckman (2008): 299, 335−337 (key, illustrations, distribution);— Garrison et al. (2010): 134, 287−289 (generic key, diagnosis, illustrations, distribution, habitat, comments);— Côrtes et al. (2011): 136 (distribution of M. waltheri  in Tocantins State);— Hämäläinen (2013): 30 (mention of M. waltheri  named after Walthère de Selys Longchamps);— Machado & Bedê (2015): 290−291, 294 (occurrence of M. waltheri  ; description of M. franciscoi  , additional distribution of M. caldense  in Minas Gerais State as “ Minagrion caldensis  ” in p. 294, illustration of genital ligula, comparison with Minagrion franciscoi  ).— Vilela et al. (2016): 489 (distribution of M. waltheri  in Minas Gerais State, ecological data);— Lencioni (2017): 247, 383−396 (diagnosis, illustrations, distribution);— Renner et al. (2017): 3−6 (distribution of M. waltheri  in Rio Grande do Sul State);— Rodrigues & Roque (2017): 2 (distribution of M. waltheri  in Mato Grosso do Sul State);— Dalzochio et al. (2018): 6 (distribution of M. waltheri  in Rio Grande do Sul State).

Other species included. Minagrion waltheri  , Minagrion ribeiroi  , Minagrion caldense  , Minagrion canaanense  , Minagrion franciscoi  new syn.

Diagnosis. Medium to large coenagrionids (28–61 mm, Figs. 1View FIGURE 1 a–f, 5a–j); male anal appendages forcipate with a medial longitudinal ridge on medial surface of cercus: apically armed with a rounded sclerotized lobe (dorsal plate); the ventral portion of which forms a ventrobasal expansion varying in size (see Figs. 3View FIGURE 3 a–x, 8a–h); paraprocts vestigial with an acute tip, shorter or subequal to 1/2 cercus; genital ligula with an inner fold next to flexure, sclerotized lateral process at the flexure, apex entire (e.g. Fig. 4View FIGURE 4 a–b) or bifid ( Fig. 4cView FIGURE 4), surpassing level of or almost at the same level of inner fold ( Fig. 4eView FIGURE 4); female posterior lobe of prothorax slightly convex, uni- ( Fig. 6View FIGURE 6 a–c) or trilobate ( Fig. 6View FIGURE 6 d–f) in dorsal view; in lateral view, posterior margin of prothorax entire ( Fig. 7cView FIGURE 7) or divided ( Fig. 7View FIGURE 7 a–b, d–e) in the posterior lobe region, notopleural suture a sinuous ( Fig. 7cView FIGURE 7) or smoothly curved line ( Fig. 7bView FIGURE 7); S8 with no vulvar spine ( Fig. 9c, f, i, lView FIGURE 9); vulvar laminae always surpassing posterior margin of S10, reaching or not the level of cercus; presence of a longitudinal process (here called tubercle) on both sexes, which consists in a thin projection on the venter of S1, larger on males (e.g. Figs. 2View FIGURE 2 a–l).

Distribution. Endemic to Brazil predominantly in the Southeastern region.


Museu Nacional/Universidade Federal de Rio de Janeiro