A new species of Dimeragrion Calvert, 1913 (Odonata: Zygoptera: Heteragrionidae) from Northwestern Brazil Author Mendoza-Penagos, Cristian Camilo Programa de Pós-graduação em Zoologia - PPGZOOL, Universidade Federal do Pará, Belém, Brazil. & Laboratorio de Ecologia e Conservação - LABECO, Universidade Federal do Pará, Instituto de Ciências Biológicas, Rua Augusto Correia, No. 1 Bairro Guamá, CEP 66.075 - 110 Belém, Pará, Brazil. Author Kenzy, Myckey Author Gonçalves, Silva Programa de Pós-graduação em Zoologia - PPGZOOL, Universidade Federal do Pará, Belém, Brazil. & Laboratorio de Ecologia e Conservação - LABECO, Universidade Federal do Pará, Instituto de Ciências Biológicas, Rua Augusto Correia, No. 1 Bairro Guamá, CEP 66.075 - 110 Belém, Pará, Brazil. Author Vilela, Diogo Silva Laboratório de Biologia Aquática, Departamento de Ciências Biológicas, Faculdade de Ciências e Letras de Assis, Universidade Estadual Paulista, Assis, São Paulo, Brazil. text Zootaxa 2023 2023-07-20 5318 3 411 420 http://dx.doi.org/10.11646/zootaxa.5318.3.6 journal article 56579 10.11646/zootaxa.5318.3.6 1615794f-49c1-4f9d-8039-a68c452cabc4 1175-5326 8166990 07C26125-AE3D-457F-ADE2-1385CB73D138

TABLE 1. Summary of some diagnostic characters of Dimeragrion species. Characters of D. clavijoi, D. mesembrinum, D. percubitale, D. secundum and D. unturanense were taken from their original description (De Marmels 1999; De Marmels 1989; Calvert 1913; Needham & Tate 1933; De Marmels 1992). NA: Character not available or not described.

		D. baniwa	D. clavijoi De Marmels, 1999	D. mesembrinum De Marmels, 1989	D. percubitale Calvert, 1913	D. secundum Needham, 1933	D. unturanense De Marmels, 1992
Distribution	Mountain/region	S„o Gabriel da Cachoeira	Cerro Yutajé	Cerro de la Neblina	Tumatumari/Cerro de la Neblina/Auyantepuí/Ptarí-tepuí	Monte Duida	SierraUnturán/Tamacuarí
	Elevation (m a.s.l.)	80	1750	1800	80/180/1100/1800	1000 -1200	950 / 1800
Coloration	Vertex and rear of head	Black with purple relfections	black	black	black with metallic green reflections	black	black
	labrum and anteclipeus	with a white transverse band	with a white transverse band	Yellow with black margin	Dark metallic violet	NA	with a white transverse band
	Protorax	Black dorsally	Brassy black dorsally	Black dorsally	Black with green metallic reflection	Yellowish, black barred	Brassy black
	Pterotorax	dark brown to black, with blue metallic reflections.	mostly black with metallic green reflections	Black, with metallic green and coopery reflections	Metallic green, 3/4 with pruinisence	Greenish black	dark brown to black, with blue or green metallic reflections.
Wings	Stigma + 2+4	black	Dark-brown	Dark-brown	Dark-brown	NA	Dark-brown
	Px FW	23	24-25	24	NA	25	23 - 25
	Px HW	22	21-22	22	NA	24	19-20
	IR2 origin	At first postnodal	At subnodus	At first postnodal	At first postnodal	At subnodus	At first postnodal
	RP3+4 origin	at subnodus	before subnodus	at subnodus	at subnodus	before subnodus	at subnodus
	cubito-anal crossveins	No accessory crossveins	No accessory crossveins	No accessory crossveins	2 to 4	No accessory crossveins	2
Appendages	length	Twice than S10	Twice than S10	NA	Longer than S10	Distinctly longer than inferiors	Slightly shorter than S10
Measurements	abdomen males	22.9	42.3	37.5	26.5-34	44	30.5
	abdomen females	18	31.2 -35.2	31	24.5 - 25.5	NA	25
	HW males	19.4	32.5	28.5	21.5-25	31	35.2
	HW females	16	28.5 – 29.5	25.5	20 -22.5	NA	NA