Machadagrion, Lencioni, 2022

Lencioni, F. A. A., 2022, Analysis of male Leptagrion Selys, 1876 sensu lato (Odonata: Coenagrionidae) with description of four new genera and a new species, Zootaxa 5105 (1), pp. 63-104 : 88

Machadagrion gen. nov.

Figs. C, 47–58

Type species. Leptagrion cyanostigma Machado, 2012 by present designation.

Etymology: From Machado in honor to Dr. Angelo B.M. Machado, physician, neuroanatomist, educator, theatrical author, children’s book writer, entomologist, one of the fathers of Brazilian Odonatology and my friend and colleague for more than 3 decades + agrion, neuter form of agrios (ἄγριος) meaning “wild”, which in damselflies is now used as an indicator that the genus belongs to the Coenagrionidae ( Fliedner 2006) .

Generic characterization. Medium sized Coenagrionidae (42–44.5 mm), pale postocular spots and pale occipital bar absent, rear of the head pale, Cerci to subequal to S10, roughly cylindrical flattened laterally, apical extremity of cerci bifurcated, the dorsal branch smaller or longer the ventral one and covered with brush-like setae, ventral one folded in a “C”-shape, paraproctus vestigial (plate-like) and ental surface of penis S3 with a two or several rows of spines (minute in M. garbei ).

Distribution. Brazil (Atlantic Forest in Brazil from Ceará to Bahia).

Figures

FIGURE 47. Machadagrion cyanostigma: A—Appendages, lateral view, B—Appendages, dorsal view.

FIGURE 48. Machadagrion dardanoi: A—Appendages, lateral view, B—Appendages, dorsal view.

FIGURE 49. Machadagrion garbei: A—Appendages, lateral view, B—Appendages, dorsal view.

FIGURE 50. Machadagrion cyanostigma: A—Prothorax, lateral view, B— Prothorax, dorsal view.

FIGURE 51. Machadagrion dardanoi: A—Prothorax, lateral view, B— Prothorax, dorsal view.

FIGURE 52. Machadagrion garbei: A—Prothorax, lateral view, B— Prothorax, dorsal view.

FIGURE 53. Machadagrion cyanostigma: A—Penis, lateral view, B— S3, ental view.

FIGURE 54. Machadagrion dardanoi: A—Penis, lateral view, B— S3, ental view.

FIGURE 55. Machadagrion garbei: A—Penis, lateral view, B— S3, ental view.

FIGURE 56. Machadagrion cyanostigma: Habitus.

FIGURE 57. Machadagrion dardanoi: Habitus.

FIGURE 58. Machadagrion garbei: Habitus.