Heteragrion dorsale Selys, 1862

LENCIONI, F. A. A., 2013, Diagnoses and discussion of the group 1 and 2 Brazilian species of Heteragrion , with descriptions of four new species (Odonata: Megapodagrionidae) , Zootaxa 3685 (1), pp. 1-80 : 8-9

publication ID	https://doi.org/10.11646/zootaxa.3685.1.1
publication LSID	lsid:zoobank.org:pub:5807B81B-3FDE-41C9-808F-005192A5E089
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treatment provided by	Felipe (2021-08-25 05:08:30, last updated 2023-11-10 04:43:52)
scientific name	Heteragrion dorsale Selys, 1862
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Heteragrion dorsale Selys, 1862 View in CoL

Figs. 40A–C View FIGURE 40 (♂ thx), 71 (map)

Heteragrion dorsale Selys, 1862: 23–24 View in CoL [21–22 reprint] (description of male); Selys, 1886: 57 (species diagnosis); Williamson, 1919: 24 (discussion); Costa & T. C. Santos, 2000: 4 (key); Machado, 2006: 1065 (redescription of holotype); Garrison et al, 2010: 88 (list).

Types. Male holotype in IRSNB (not examined).

Additional material examined. None.

Distribution. Only the type locality: Brazil: Rio de Janeiro State: Nova Friburgo.

Diagnosis. Only known by the holotype, currently diagnosed from congeners only by color as indicated in

Machado's (2006) redescription reproduced here: " Mesepisternum orange with black marks as follows: at the middorsal, basal and antealar carinae extending below to the acrotergal area and above to the antealar sinus; a semicircular spot adjoining the upper 1/4 of the humeral suture. A narrow stripe adjoining the middorsal carina at each side visible only at its upper third, extending laterally to the lower third of the antealar carina. Mesepimeron with a black stripe occupying all the extent of the sclerite, continuing below into the mesinfrepisternum. It has a brownish orange area at its lower extremity. Small one at the anterodorsal part. Mesinfraepisternum black with a brownish orange anterodorsal part becoming brownish orange at its lower extremity and continuing below into the metinfraepisternum; a metepimeral one, black becoming brownish orange at its upper extremity ”. Appendages missing.

Remarks: As pointed out by Machado (2006), the specimen illustrated by Lencioni (2005) is not H. dorsale but represents an as yet undescribed species.

References

Garrison, R. W., von Ellenrieder, N. & Louton, J. A. (2010) Damselfly Genera of the New World: An Illustrated and Annotated Key to the Zygoptera. The Johns Hopkins University Press, 490 pp.

Lencioni, F. A. A. (2005) Damselflies of Brazil. An illustrated identification guide. 1 - Non - Coenagrionidae families. All Print Editora, Sao Paulo, iv + 324 pp.

Selys - Longchamps, M. E. (1886) Revision du synopsis des Agrionides, Premiere partie comprenant les legions Pseudostigma- Podagrion - Platycnemis et Protoneura. Memoires couronnes et Autres Memoires publies par Academie Royale des Sciences, des Lettres et des Beaux - Arts de Belgique, 38 (4), 1 + iv + 2 - 233.

Williamson, E. B. (1919) Results of the University of Michigan - Williamson Expedition to Colombia, 1916 - 1917. IV. Notes on species of the genus Heteragrion Selys with description of new species (Odonata). Occasional Papers Museum Of Zoology, University of Michigan, nº 68, 1 - 87.