Scelolabes verasilvae, Barros & Freitas-Silva & Ale-Rocha, 2023
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publication ID |
https://doi.org/ 10.5852/ejt.2023.890.2251 |
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publication LSID |
lsid:zoobank.org:pub:D3A00B64-844C-48C7-ADE5-6AB8E97F6A12 |
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DOI |
https://doi.org/10.5281/zenodo.8284626 |
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persistent identifier |
https://treatment.plazi.org/id/19C18F93-93BA-4708-8A0B-F6CD3C0FDDED |
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taxon LSID |
lsid:zoobank.org:act:19C18F93-93BA-4708-8A0B-F6CD3C0FDDED |
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treatment provided by |
Felipe |
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scientific name |
Scelolabes verasilvae |
| status |
sp. nov. |
Scelolabes verasilvae sp. nov.
urn:lsid:zoobank.org:act:19C18F93-93BA-4708-8A0B-F6CD3C0FDDED
Figs 5–6 View Fig View Fig , 7A View Fig
Diagnosis
Scutum ( Fig. 5D View Fig ) yellow, except for a broad black stripe occupying dorsocentral and intra-alar regions, slightly narrower anteriorly. Pleura ( Fig. 5A View Fig ) yellow, except spot on upper margin of anepisternum pale brown. Mediotergite yellow, except spot on lateral margin brown. Hind femur ( Fig. 5E View Fig ) swollen at apex, hind tibia slightly arched and swollen at apex.
Etymology
The epithet ‘ verasilvae ’ is named in honor of dipterologist Vera Cristina Silva, who collected a number of the specimens studied in the manuscript.
Type material
Holotype CHILE • ♂ (good condition, terminalia dissected); “ CHILE. [Cautín:], R.[egion] IX, PN [National Parkl] Nahuelbuta , 37°48′10″S / 73°01′27″ W, 1327 m, 8–10.ii.2005, YPT [Yellow Pan Trap], Araucaria / Chusquea forest [sic. Araucania], UCR A Tol C05-004” [white label]. “HOLOTYPE, Scelolabes verasilvae Barros, Freitas-Silva & Ale-Rocha ” [red label]; CNC. GoogleMaps
Paratypes CHILE • 1 ♀; same collection data as for holotype except “ 37º49′42′′S 73º00′39′′W, 1138 m, 8–9. ii.2005, meadow & along stream, UCR AToL C05-002”; CNC GoogleMaps • 1 ♂; “ Conguillio NP, 1150 m, Araucaria / Nothofagus , 5.ii.1988, L. Masner ”; CNC • 1 ♂, 2 ♀♀; same collection data as for holotype except “ 4.ii.1988 ”; CNC GoogleMaps • 2 ♂♂; “ 14 km E Malalcahuello , 1570 m, 3–31.xii.1982, A. Newton & M. Thayer ”; CNC • 1 ♂; “ Cautin Prov. , Volcan, Villarrica, 15-19.xii. 1982, 1250 m, A. Newton & M. Thayer ”; MNHN • 1 ♀; “ Valdivia , 30kmW La Union, Las Trancas, Nothofagus , 25.ii.1988, L. Masner ”; MNHN • 1 ♀; “Region IX, PN Nahuelbuta , 8.ii.2005, sweep Araucaria forest (CH-01), L. Masner ”; CNC • 1 ♂, 1 ♀; “Region IX, PN Conguillio , 3.9 km S north entrance 38°39′01″S 71°39′45″W, 1239 m, 20-24. ii.2006, YPT, Nothofagus / Chusquea for”; CNC GoogleMaps • 6 ♂♂, 4 ♀♀; “ Parque Nacional Conguillío , Auracania, -38.648216, -71.669870, 21–22.I.2023, A. Gonçalves col.”; INPA GoogleMaps .
Description
Male ( Fig. 5A, C–G View Fig )
MEASUREMENTS. Body length: 4.5 mm. Wing length: 3.5 mm.
HEAD. Frons brown, shining, dichoptic, narrow, about same width of anterior ocellus. Very close eyes on face. Face 1.2× length of frons. Antenna ( Fig. 5C View Fig ) pale brown; scape as long as pedicel; postpedicel lanceolate, about 1.2× length of scape and pedicel combined, with dense brown microtrichia; stylus about 2 × length of antenna. Proboscis pale brown and short; palpus ( Fig. 5C View Fig ) pale yellow, short, oval, covered with dense yellow pruinosity and 1 long and slender seta. Two pairs of slender proclinate ocellar setae, 1 anterior long and 1 posterior very short. Occiput black ( Fig. 5D View Fig ), covered with dense grey pruinosity; postocular setae elongated, scattered, upper setae stronger.
THORAX. Shining. Pronotum dark brown, except lateral margin yellow. Scutum ( Fig. 5D View Fig ) longer than wide, yellow, except for a broad black stripe occupying dorsocentral and intra-alar regions, not including postpronotal lobe, slightly narrower anteriorly; median acrostichal area and postalar callus pale brown. Pleura ( Fig. 5A View Fig ) yellow, except spot on upper margin of anepisternum pale brown, with slightly grey pruinosity. Scutellum ( Fig. 5D View Fig ) pale brown on base and yellow on apex, with slightly grey pruinosity; 1 thin short lateral scutellar pair of setae and 1 long, strong and black apical scutellar bristle of setae. Mediotergite yellow, except brown spot on lateral margin, with slightly grey pruinosity. Acrostichal setae with 4 rows, dorsocentral uniserial, short, slender and sparse on scutum; several short and slender setae (acrostichal and dorsocentral) on prescutelar region; notopleuron with slightly grey pruinosity, 1 long and strong notopleural bristle and several shorter, slender bristles; several postpronotal setae short and slender; 2 postalar setae, 1 anterior long and strong and 1 posterior short and slender.
WING ( Fig. 5G View Fig ). Membrane pale brown: pterostigma brown, elongate and narrow; dm cell shorter than basal cells, approximately 2.5× as long as wide; bm cell 1.3 × length of cua cell; CuA vein complete, reaching CuP vein. Halter whitish yellow, stem with some setulae.
LEGS. Long and slender ( Fig. 5A, E View Fig ). All coxae whitish yellow, except hind coxa slightly darker; femora whitish yellow, except dorsal surface of hind femur pale brown; tibiae pale brown, hind tibia darker; tarsi light brown. Coxae subequal in length. Hind femur slightly swollen near apex. Hind tibia ( Fig. 5E View Fig ) arched and slightly swollen at apex. Chaetotaxy: fore femur without outstanding setae; mid femur with 1 long and strong anterodorsal subapical seta, 1 long and slender ventral seta at basal ⅓, 1 long and slender anteroventral seta at mid-length and 1 long and slender anteroventral seta at ⅓ of apical; hind femur with 1 long and slender anterodorsal subapical seta, a row of long and strong anteroventral setae, both inserted on short tubercles. Fore tibia without outstanding setae; mid tibia with 1 long and stronger anterodorsal seta at mid-length, 1 anteroventral and 1 posteroventral long and strong apical setae. Tarsi without outstanding bristles.
ABDOMEN ( Fig. 5F View Fig ). Shining. All tergites brown, whitish and weakly sclerotized anteriorly. Sternite 1–3 weakly sclerotized, hyaline; sternites 4–8 pale brown, weakly sclerotized anteriorly. All tergites with long and slender setae on apical margin.
MALE TERMINALIA ( Fig. 6A–F View Fig ). Hypandrium ( Fig. 6A View Fig ) short, 2× as long as wide, sub-quadrangular, with a short projection with an apical tuft of long and slender setae on the right side ( Fig. 6A View Fig ). Epandrial lamellae covered with several short and slender setae. Left epandrial lamella ( Fig. 6C View Fig ) subtriangular, shorter than right, 1.5× as wide as long; right epandrial lamella ( Fig. 6D View Fig ) broad, sub-quadrangular, as wide as long; presence of a long and slender dorsobasal projection behind right cercus, inserted close to bridge that links right to left epandrial lamellae ( Fig. 6B View Fig ). Left surstylus ( Fig. 6E View Fig ) long, slightly sharpened, with 1 row of long, slender setae close together on dorsal surface, 1 row of long, slender and scattered setae on ventral surface, all setae inserted on tiny tubercles; right surstylus ( Fig. 6F View Fig ) shorter, about ⅔ of left, right lobe thin and sharpened, left lobe rounded with short and slender setae, dorsal surface with a row of long, slender and scattered setae, inserted on tiny tubercles, ventral surface bare. Cerci symmetrical, short, subtriangular, weakly sclerotized, covered with short and slender setae ( Fig. 6B View Fig ). Subepandrial sclerite ( Fig. 6B View Fig ) with basal margin truncate, distal margin with slight concavity in the middle. Hypoproct ( Fig. 6B View Fig ) sub-quadrangular, with a short triangular projection in left margin. Bacilliform sclerite asymmetrical with short and slender setae.
Female ( Fig. 5B View Fig )
Similar to male.
Variation
Some specimens of S. verasilvae sp. nov. have a completely yellow acrostichal region.
Remarks
Scelolabes verasilvae sp. nov. resembles S. amorimi sp. nov. in the slender legs and coloration of the scutum, but the species differ in the coloration of the pleura. In S. verasilvae . the pleuron is yellow with a brown spot on the upper margin of the anepisternum, while in S. amorimi . the pleuron is mostly yellow, except for the brown anepisternum, and the presence of a brown spot on the katepisternum, anepimeron and meron.
Distribution
This species is known from Chile ( Fig. 7A View Fig ).
| MNHN |
France, Paris, Museum National d'Histoire Naturelle |
| INPA |
Brazil, Amazonas, Manaus, Instituto Nacional de Pesquisas da Amazoonia, Colecao Sistematica da Entomologia |
| CNC |
Canadian National Collection of Insects, Arachnids, and Nematodes |
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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