Cyanogomphus comparabilis Belle, 1994

Pinto, Ângelo Parise & Almeida, Marcus Vinícius Oliveira De, 2016, A taxonomic synopsis of South American Cyanogomphini Carle with description of Cyanogomphus angelomachadoi sp. nov. from the Cerrado of Brazil (Odonata: Gomphidae), Zootaxa 4078 (1) : -

publication ID	https://doi.org/ 10.11646/zootaxa.4078.1.6
publication LSID	lsid:zoobank.org:pub:3D0D79C2-2583-47F4-BC01-5CF347614B44
DOI	https://doi.org/10.5281/zenodo.6077751
persistent identifier	https://treatment.plazi.org/id/495E274C-FFC4-FF97-FF43-FAD0ED4AFCCC
treatment provided by	Plazi
scientific name	Cyanogomphus comparabilis Belle, 1994
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Cyanogomphus comparabilis Belle, 1994 View in CoL

LSID urn:lsid:zoobank.org:act:3C2DF075-F675-4A30-B8E1-A9628E7367DB ( Figures 2 View FIGURE 2 C, 4C, 5E, 7D–F, 8E–F, 10C, 12)

Cyanogomphus comparabilis Belle, 1994: 47 View in CoL –49, figs 5–8 (description of ♂ holotype, BRAZIL. Mato Grosso State: Diamantino municipality, IV.1988, E. Furtado leg. in ABMM, illustrations of color of mesepisternum in dorsal view, secondary genitalia in lateral view, caudal appendages in dorsal and lateral views of holotype);— Bridges (1994: VII.54, VIII.18, mention);— Belle (1996: 298, comparison with C. waltheri View in CoL and Ebegomphus View in CoL spp.);— Costa et al. (2000: 8 –9, 14, mention);— Garrison et al. (2006: 96, mention);— Heckman (2006: 644, fig. 3.2.771, key, reproduction of illustrations of ♂ holotype from Belle 1994).

Material examined (2♂). BRAZIL. M[a]t[o] Grosso State: Holotype ♂, Diamantino municipality, Alto Rio Arinós [14°09’36”S, 56°12’00”W, 337 m a.s.l.], pond at Cerrado near gallery forest, IV.1988, E. Furtado leg.; S[ão] P[aulo] State: 1♂ Paratype, Igarapava municipality [20°02’20.04”S, 47°44’49.20”W, 578 m a.s.l.], Córrego Canabrava, [0] 6.II. [19]89, P.A. Machado & A. Costa leg. All in ABMM.

Type repository. Holotype ♂ and one paratype ♂ by original designation in ABMM.

Measurements. Males (n = 2). Total length (including caudal appendages) 42.7–47.0; abdomen length (excluding caudal appendages) 31.8–34.5; head maximum width 5.6–5.9; Fw length 24.9–25.8; Hw length 23.8–24.8; Fw maximum width 5.3–5.7, in Hw 6.4–7.1; pt length 3.1–3.4 in Fw, 3.2–3.6 in Hw; length of metathoracic femur 6.1–7.2; metathoracic tibia 4.3–5.8; length of S9+ 10 in lateral view 3.1–3.8; total length of cercus in lateral view 1.0–1.3.

Female and Larva. Unknown.

Diagnosis. Males of Cyanogomphus comparabilis can be distinguished from Tibiagomphus spp. by its cercus cylindrical, slightly curved toward to the upturned tapered apex ( Figs 7 View FIGURE 7 A–I, 8A–F) and branches of epiproct with a distal concavity at posterodorsal apex ( Figs 8 View FIGURE 8 B, D, F, apex of cercus directed posteriorly, epiproct dorsally smooth, without concavity in Tibiagomphus ).

This distinctive species is distinguished from congeners by the largely pale mesepisternum close to the dorsal carina (dark in C. angelomachadoi sp. nov. and C. waltheri , Figs 1 View FIGURE 1 , 10 View FIGURE 10 A–B, D, 11A); light brownish-yellow pt ( Figs 2 View FIGURE 2 C, 10C, darker, brown to dark brown in C. angelomachadoi sp. nov. and C. waltheri , Figs 2 View FIGURE 2 A–B, D); almost uniformly colored abdomen, lacking distinct spots ( Fig. 10 View FIGURE 10 C; patterned with dark and pale spots in C. angelomachadoi sp. nov. and C. waltheri , Figs 10 View FIGURE 10 A–B, D, 11A); sharply pointed apex of posterior hamule ( Figs 4 View FIGURE 4 C, distinctly less sharp in C. angelomachadoi sp. nov. and C. waltheri , Figs 4 View FIGURE 4 B–D); a constriction at about anterior 0.66 to the enlarged apex of epiproct in lateral view ( Figs 7 View FIGURE 7 D, 8E–F, not markedly constricted anterior to the enlarged apex in C. angelomachadoi sp. nov. and C. waltheri , Figs 7 View FIGURE 7 A, G, 8A, D) and by the very small distal concavity on the epiproct, almost restricted to the apex ( Figs 7 View FIGURE 7 D–F, 8E–F, distal concavity larger, roughly quadrangular, and extending more proximal in C. angelomachadoi sp. nov. and C. waltheri Figs 7 View FIGURE 7 A, G, 8A–D).

Distribution. Mato Grosso and São Paulo States in Brazil, in the Cerrado biogeographical province ( Fig. 12 View FIGURE 12 ). Biological and ecological data. Known only from two males collected close to streams or brooklets in lotic systems surrounded by forests (riparian), at 337–578 meters of elevation.

Remarks. Belle (1994, p. 47) and Costa et al. (2000, p. 8) have stated that the male paratype from São Paulo was deposited in Naturalis Biodiversity Center, Leiden, The Netherlands (RMNH). However, it was never sent to that collection and is still deposited in ABMM, whose collection was donated to and will be transferred to the Universidade Federal de Minas Gerais, Belo Horizonte, Brazil (UFMG). We suspect that the illustration of secondary genitalia by Belle (1994, fig. 6) was based on the paratype, as it differs from the holotype that shows an unusual shape ( Fig. 4 View FIGURE 4 C). We illustrate the posterior hamule of the paratype ( Fig. 5 View FIGURE 5 E) which resembles that of C. waltheri , showing a more usual shape, similar to the other Cyanogomphus species.