Downeshelea casimirensis, Santarém & Borkent & Spinelli & Felippe-Bauer, 2018
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publication ID |
https://doi.org/ 10.1080/00222933.2018.1437231 |
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publication LSID |
lsid:zoobank.org:pub:9FC2A016-1295-4047-877E-BC9030BD2BD2 |
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DOI |
https://doi.org/10.5281/zenodo.5189608 |
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persistent identifier |
https://treatment.plazi.org/id/322BC67C-62DF-4920-B999-3DDA14636BFF |
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taxon LSID |
lsid:zoobank.org:act:322BC67C-62DF-4920-B999-3DDA14636BFF |
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treatment provided by |
Felipe |
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scientific name |
Downeshelea casimirensis |
| status |
sp. nov. |
Downeshelea casimirensis sp. nov.
( Figures 2a–d View Figure 2 , 8c–e View Figure 8 , 10 View Figure 10 )
Diagnosis
Male. The only species of Downeshelea in the Americas with the following combination of features: gonostylus 0.81 length of gonocoxite; parameres fused for 0.19 of total length; stem straight, gradually swollen to apex; distal portion strongly curved ( Figure 8e View Figure 8 ); aedeagus subtriangular, heavily sclerotised laterally on proximal 2/3, with a pair of submedian, longitudinal sclerotised stripes and oval areas, basal arch V-shaped, extending to 0.56 of total length ( Figure 8d View Figure 8 ).
Female. Unknown.
Description
Male. Head. Eyes slightly contiguous in lower area; antennal ratio 0.91 ( Figure 2c View Figure 2 ); palpal ratio 2.0 ( Figure 2b View Figure 2 ).
Thorax. Brown, without definite pattern in slide-mounted specimens. Wing ( Figure 2a View Figure 2 ) with greyish spot over CuA 2 extending into cua 1, anal cell, reaching wing margin; 2 nd radial cell twice longer than 1 st; wing length 0.85 mm; breadth 0.35 mm; costal ratio 0.70. Halter pale brown. Legs ( Figure 2d View Figure 2 ) pale brown, hind femur slightly darker subapically. Fore-, hind tarsomere 1 with one basal, one apical spine; midtarsomere 1 with two basal, two apical, four other ventral spines; apical spines of tarsomeres 2–4 of fore-, mid-, hind legs: 1–1–1; 2–2–1; 1–1–1; fore tarsal ratio 2.31, mid tarsal ratio 2.45, hind tarsal ratio 2.14; claws 0.35 length of their respective tarsomere 5.
Abdomen. Dark brown. Terminalia ( Figure 8c View Figure 8 ): tergite 9 with quadrate apex, apicolateral process elongate, slender; sternite 9 slightly concave anteriorly, posterior margin with large convex median lobe with blunt tip bearing 3 long setae. Gonocoxite 2.41 times longer than basal width; gonostylus long, 0.81 length of gonocoxite. Parameres ( Figure 8e View Figure 8 ) 1.10 times longer than aedeagus, fused for 0.19 of total length; knob flattened; stem straight, gradually swollen to apex; distal portion strongly curved, 0.53 of total length. Aedeagus ( Figure 8d View Figure 8 ) subtriangular, heavily sclerotised laterally on proximal 2/3, basal arch V-shaped, extending to 0.56 of total length with pair of submedian, longitudinal sclerotised stripes and oval areas; distal portion with a deep mesal excavation terminating in two short, slender, sclerotised, slightly serrate processes with pointed tip.
Female. Unknown.
Specimens examined
Holotype male adult, labeled ‘ Holotype Downeshelea casimirensis Santarém, Borkent, Spinelli and Felippe-Bauer , BRAZIL, Rio de Janeiro, Casimiro de Abreu, Union Biological Reserve (22° 25′ 35″ S, 42° 2′ 4″ W), 28 April-17 May 2013, Malaise, Biota Diptera Fluminense team cols.’ (CCER).
Distribution and bionomics
This species is restricted to forests in the Brazilian State of Rio de Janeiro (Casimiro de Abreu municipality) ( Figure 10 View Figure 10 ).
Etymology
This species is named after the type locality at Casimiro de Abreu , municipality of Rio de Janeiro State .
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.