<i>Negragrion sagma</i> gen.n. and sp.n. from South America with a morphological phylogeny of the New World Ischnurinae (Odonata: Zygoptera: Coenagrionidae)

MUZÓN, JAVIER; LOZANO, FEDERICO

doi:10.1590/0001-3765202020190025

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BIOLOGICAL SCIENCES • An. Acad. Bras. Ciênc. 92 (suppl 2) • 2020 • https://doi.org/10.1590/0001-3765202020190025 copy

Negragrion sagma gen.n. and sp.n. from South America with a morphological phylogeny of the New World Ischnurinae (Odonata: Zygoptera: Coenagrionidae)

Authorship SCIMAGO INSTITUTIONS RANKINGS

Abstract

A new coenagrionid genus, Negragrion, is described for N. sagma sp.n. found in Argentina and Brazil (Holotype and allotype, pair in tandem. Argentina: Corrientes: Santo Tomé, arroyo Ita Cuá sobre RP 94, 28°26’48.30”S 56°00’33.11”W, 24.ii.2003, Muzón & Pessacq coll., MLP). The new genus is characterized by the shape of male cerci (decumbent from base; saddle-shaped; in lateral view with an acute apophysis directed dorsally located at 0.3 from base). The presence of a vulvar spine on S8 of females places this genus within Ischnurinae. A cladistics analysis using morphological data was carried out to determine its phylogenetic position. Negragrion gen.n. is recovered within the clade 4 as the sister group of the clade (Acanthallagma Acanthagrion (Oxyagrion, Fluminagrion)).

Key words
Argentina; Brazil; Ischnurinae; Negragrion; phylogeny

	0	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Coenagrion	0	1	0	0	0	1	1	0	0	0	0	[01]	0	1	1	[01]	0	1	1	1	0	0	0	0	1	1	0	[01]	[01]	0	1	[01]
NEGRAGRION	0	0	0	0	0	[01]	1	0	0	0	0	0	0	1	1	1	0	1	1	0	0	1	0	0	0	1	1	0	1	0	0	0
Acanthagrion	0	[01]	0	0	0	[01]	1	0	[01]	0	0	[01]	0	1	[01]	[01]	0	1	1	0	0	[01]	[01]	0	0	0	0	0	0	[01]	0	0
Acanthallagma	0	1	1	0	0	1	1	1	0	0	0	[01]	0	1	1	1	0	1	1	0	0	1	0	0	0	0	0	0	0	0	0	0
Andinagrion	1	1	0	0	0	1	1	0	0	0	0	0	0	0	0	0	0	1	1	0	1	1	[01]	1	1	1	0	0	1	0	1	0
Anisagrion	0	1	0	1	0	1	1	0	0	0	0	0	0	1	0	0	1	1	0	0	0	0	0	1	1	1	0	1	0	[01]	0	1
Apanisagrion	[01]	1	0	1	0	1	1	0	0	0	0	0	0	1	0	[01]	0	1	0	0	0	0	0	0	1	1	1	1	0	0	1	0
Argentagrion	0	0	0	0	0	1	1	0	0	0	0	0	0	1	1	0	0	1	1	0	0	1	0	1	1	1	0	0	1	[01]	1	0
Calvertagrion	0	0	0	0	1	1	0	0	0	0	1	0	0	1	1	0	0	1	1	0	0	0	1	0	1	1	0	0	0	0	0	0
Cyanallagma	0	1	0	0	0	1	1	0	0	0	0	0	0	1	1	[01]	1	1	1	0	[01]	1	[01]	1	[01]	1	0	1	[01]	0	1	0
Denticulobasis	0	0	0	0	0	0	1	0	0	0	0	0	1	0	0	0	0	1	1	1	0	1	1	0	1	1	0	0	[01]	1	0	1
Dolonagrion	0	1	0	0	[01]	1	1	0	0	1	1	0	0	1	1	1	0	1	1	1	0	0	2	0	0	1	0	0	0	0	0	0
Enacantha	0	0	0	0	0	1	1	0	0	0	0	0	0	1	1	0	0	1	1	0	0	1	1	1	1	1	0	1	0	0	0	0
Enallagma	[01]	[01]	0	0	0	[01]	1	0	0	0	0	[01]	0	1	[01]	[01]	0	1	1	1	0	1	0	1	1	1	0	[01]	0	[01]	0	[01]
Fluminagrion	0	1	0	0	0	0	1	0	0	0	0	0	0	1	1	0	0	1	1	0	1	1	0	0	0	0	0	0	0	0	0	1
Hesperagrion	[01]	[01]	0	0	0	1	1	0	0	0	0	0	0	1	1	0	0	0	1	0	0	1	0	0	1	1	0	0	1	0	0	[01]
Homeoura	0	0	0	0	0	1	1	0	0	0	0	0	0	1	1	[01]	0	1	1	0	0	1	[01]	1	1	1	0	1	0	1	1	0
Ischnura	0	[01]	0	0	0	1	1	[01]	0	[01]	0	0	0	1	[01]	[01]	0	1	1	1	0	[01]	0	[01]	1	1	0	0	[01]	0	[01]	[01]
Leptobasis	[01]	0	0	0	1	0	1	0	0	1	0	0	0	[01]	[01]	0	0	0	1	1	0	[01]	2	[01]	1	1	0	1	0	0	0	[01]
Leucobasis	0	0	0	0	0	1	1	0	0	1	0	0	0	1	1	0	0	1	1	0	0	0	1	0	1	1	0	0	1	0	0	0
Mesamphiagrion	0	1	0	0	0	1	1	0	0	0	0	0	0	1	1	[01]	1	1	1	0	1	1	[01]	1	1	1	1	1	1	0	1	0
Mesoleptobasis	[01]	0	0	0	1	0	0	0	0	1	1	0	0	0	[01]	0	0	1	1	1	0	[01]	[12]	[01]	1	1	0	0	0	0	1	1
Oreiallagma	0	0	0	0	0	1	1	0	0	0	0	0	0	1	1	[01]	0	1	1	0	1	1	1	0	1	1	1	0	0	[01]	1	0
Oxyagrion	[01]	0	0	0	[01]	0	1	0	0	0	0	0	0	[01]	[01]	0	[01]	1	1	0	1	[01]	[01]	0	0	0	0	0	0	1	0	0
Oxyallagma	1	1	0	0	0	[01]	1	0	0	0	0	0	0	0	0	0	0	1	1	0	1	1	0	1	1	1	0	1	1	0	1	0
Protallagma	0	1	0	0	0	1	1	0	0	0	0	0	0	[01]	0	0	0	1	1	1	1	1	0	0	1	1	0	1	0	0	0	0
Tigriagrion	1	1	0	0	0	1	1	0	0	0	0	0	0	1	1	0	0	1	1	0	1	1	1	0	1	1	0	0	0	0	0	0
Tuberculobasis	[01]	0	0	0	0	0	1	0	0	0	0	0	1	0	0	0	0	1	1	1	0	[01]	1	0	1	1	0	0	1	0	0	[01]

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[1] Correspondence to: Federico Lozano E-mail: flozano@undav.edu.ar