Dinelytron agrion Westwood, 1859,

Heleodoro, Raphael Aquino & Rafael, Jose Albertino, 2020, Review of the genus Dinelytron Gray (Prisopodidae: Prisopodinae: Prisopodini), with a phylogenetic analysis of the genera of the Prisopodini, including the description of a new genus, Zoologischer Anzeiger 285, pp. 37-80: 43-44

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http://doi.org/ 10.1016/j.jcz.2020.01.005



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Dinelytron agrion Westwood, 1859


Dinelytron agrion Westwood, 1859  .

Dinelytron agrion Westwood, 1859: 6  ; Kirby 1904: 408 (commentaries on holotype); Redtenbacher 1906: 150 (redescription); Rafael & Heleodoro, 2017 (Brazilian catalog); Brock et al. 2019 (world catalog).

Examined material. Holotype _ ( Fig. 4AView Fig) (examined by photo): “BM [British Museum], agrion, westw. [ood], Vila Nova [ Amazonas , Tapajos river ], Bates [collector], Dinelytron  ? Agrion , Westw., Amazon , Villa Nova ” ( NHM). 

Ordinary material: “ Brasil, Manaus, Res. Ducke, 01.xii.2013, E. Aluim col.” (1 _ INPA  ).

Description of genitalia (_). Mainly membranous, with dorsal and ventral lobe continuously connected. Dorsal lobe having small rigid spiny sensilla; left, median and right posterior processes conspicuously present; with conspicuous sclerotization, heavily pigmented at left median margin ( Fig. 7A, C, EView Fig) Median posterior process with several small spikes ( Fig. 7EView Fig). Dorsal left sclerite slender, tubuliform, slightly curved; completely internal and close to dorsal-most wall of the genitalia; cleft between ducts conspicuous ( Fig. 7AView Fig). Basal pouch bifurcated, resembling a “U”, pointed latero-posteriorly, external to genitalia ( Fig. 7A, BView Fig). Sclerotized tube of ejaculatory duct present, with triangular base, positioned next to dorsal left sclerite, seeming connected ( Fig. 7CView Fig). Internal sclerite present, “C” shaped, positioned under basal pouch ( Fig. 7DView Fig). Ventral lobe with lower and upper lobule, having several small scattered sensilla. Having small bifurcated digitiform projection medially at upper lobule.

Holotype condition. Mid left and right posterior legs missing. Right posterior wing basally broken in anal area.

Geographical records. Brazil, Amazonas: Manaus.

Remarks. Westwood (1859) described this species uncertain of its placement in Dinelytron  . Kirby (1904) had the same doubt when examining the holotype, but confirmed that D. agrion  was related to Prisopodidae  . As our results demonstrate, this species belongs without a doubt to Paraprisopodini  , due to the short tegmina and convex venter. Furthermore, the male genitalia do not fit in the pattern of any Prisopodini  genus. Despite all these evidences, this species is not going to be transferred to another tribe or genus in the present work to respect the unpublished work of Oskar Conle (pers. comm., unpublished results), whom reached this conclusion previously. Thus, in the present work, Di. agrion  is still treated as Dinelytron  and to highlight this decision the name of the species is displayed between quotation marks in the phylogeny results. This is the first time the genitalia of this species are described.














Dinelytron agrion Westwood, 1859

Heleodoro, Raphael Aquino & Rafael, Jose Albertino 2020

Dinelytron agrion

Westwood 1859: 6