Oxystigma caerulans De Marmels 1987
publication ID |
https://doi.org/ 10.11646/zootaxa.3780.2.7 |
publication LSID |
lsid:zoobank.org:pub:72C52670-4454-46D3-8D71-9BC8E8A98434 |
DOI |
https://doi.org/10.5281/zenodo.6132490 |
persistent identifier |
https://treatment.plazi.org/id/7734CE70-4841-FF85-FF57-8BD7FB8B11E9 |
treatment provided by |
Plazi |
scientific name |
Oxystigma caerulans De Marmels 1987 |
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Oxystigma caerulans De Marmels 1987 View in CoL
Figs. 1 View FIGURES 1 – 8 (head), 15–16 (thx), 26 (setifer), 41–42 (app), 58 (map)
Oxystigma caerulans De Marmels, 1987: 233 View in CoL (description & Figs. holotype ♂, paratype ♂, ♀, larva by supposition,);— De Marmels 1990: 335 (checklist);— Bridges 1994: VII.40 (catalog);— Tsuda 2000: 70 (catalog); — Heckman 2008: 298 (key to species); Garrison et al. 2010: 99 –100 (list, Figs. ♂ app, genital ligula).
Types. Holotype ♂: VENEZUELA, Bolivar State, km 125, road EI Dorado-Santa Elena, de Uairén, 1280 m, 20–22 May 1985, J. De Marmels leg, in MIZA [not examined]
Specimens examined. Total: 4♂, 1♀. VENEZUELA, Bolívar State. km 125, road EI Dorado-Santa Elena, de Uairén (Sierra de Lema) {N 6.73°, W 61.64°}, 1,280 m, 20–22 May 1985, J. De Marmels leg, 1♂, 1♀ (paratypes); stream 2 km N of Salto del Danto, along highway 10; 87x 057 [T.W. Donnelly year/collection number] {N 5.99°, W 61.41°}, 1–2 Aug. 1987, T.W. Donnelly leg. 2♂; "La Escalera vor Waldende a Luepa'; "locality label a bit questionable: type locality probably less than one km before end of forest, heading to Luepa (not 2 or 3 km, as on label [J. De Marmels, pers. comm.]" {N 5.77°, W 61.46°}, 1200 m, 2 Aug. 1987, 1♂ (all RWG).
Diagnosis. Male cercus is unique in possessing a supplementary denticulate ridge at basal 0.30 best seen in medio-dorsal view ( Figs. 41–42 View FIGURES 41 – 48 ). These denticles ("dorso-internal submedian hook or tubercle" of De Marmels,1987) vary as to number and condition; they are absent in O. cyanofrons ( Figs. 43 View FIGURES 41 – 48 , 49–51 View FIGURES 49 – 57 ) and O. petiolatum ( Figs. 44–48 View FIGURES 41 – 48 , 52–57 View FIGURES 49 – 57 ). A transverse ridge bisects the medial margin of the medial lobe (absent in O. cyanofrons , Figs. 43 View FIGURES 41 – 48 , 49–51 View FIGURES 49 – 57 and O. petiolatum Figs. 44–48 View FIGURES 41 – 48 , 52–57 View FIGURES 49 – 57 ) and the distal portion of the cercus beyond the posterior margin of the medial lobe is relatively short compared to that of O. cyanofrons ( Figs. 43 View FIGURES 41 – 48 , 49–51 View FIGURES 49 – 57 ) and O. petiolatum ( Figs. 44–48 View FIGURES 41 – 48 , 52–57 View FIGURES 49 – 57 ).
Female is unique by the club-like setifer ( Fig. 26 View FIGURES 25 – 34 ) ending more or less at the level of the anteriormost portion of the intersternite; the setifer is longer and surpasses the margin of the intersternite in O. cyanofrons ( Figs. 27–30 View FIGURES 25 – 34 ) and O. petiolatum ( Figs. 25, 31–34 View FIGURES 25 – 34 ).
Remarks. The morphological characters given here supplement the diagnosis by De Marmels (1987) in his original description. Variation noted in the thoracic pattern mentioned in the original description is illustrated here for the synthorax ( Figs. 15–16 View FIGURES 9 – 16 ). The head ( Fig. 1 View FIGURES 1 – 8 ) is dark and is similar to many O. petiolatum .
Distribution. This species is thus far known from southern Bolívar State, Venezuela, though it will likely turn up in neighboring Brazil. De Marmels (1987) mentions that "… adults of O. caerulans sp. n. were common along a black ("red") water creek in the forest. It was the only megapodagrionid seen."
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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Oxystigma caerulans De Marmels 1987
Garrison, Rosser W. 2014 |
Oxystigma caerulans
Garrison 2010: 99 |
Heckman 2008: 298 |
Tsuda 2000: 70 |
De 1990: 335 |
De 1987: 233 |