Omalaspis orientalis Belizin 1968
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publication ID |
https://doi.org/ 10.11646/zootaxa.2917.1.1 |
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DOI |
https://doi.org/10.5281/zenodo.5292335 |
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persistent identifier |
https://treatment.plazi.org/id/038A530B-F50C-6972-FF58-FF695946DDCB |
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treatment provided by |
Felipe |
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scientific name |
Omalaspis orientalis Belizin 1968 |
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Omalaspis orientalis Belizin 1968
( Figs 3a View FIGURE 3 & 4a View FIGURE 4 )
Type material. (1 ♀ & 2 ♂) HOLOTYPE female ( ZIN) 21- 8-1961 in Tutchingo bay , Primorye Region, ( RUSSIA), M.Nikolskaja coll. PARATYPES: Russia: 2 ♂ ( ZIN) 18 and 20- 8-1961 in Tutchingo bay , Primorye Region, V.Trjapitzin coll.
Diagnosis. Omalaspis orientalis n. sp. differs from all other species of this genus having the scutellar foveae completely smooth; remaining species have scutellar foveae more or less sculptured. Moreover, the posterior area of the vertex in O. orientalis is weakly rugose, the frons has irregular small carinae on dorsal half, and the mesoscutum is coriaceous with faint transverse carinae anteriorly.
Redescription. Length. Male 2.7 mm.; Female 3.0 to 3.5 mm.
Coloration. FEMALE. Head and mesonotum black, metanotum black to dark brown. Scape and pedicel black. Antennomeres brown. Coxa black to dark brown, remaining leg segments brown. Wing hyaline, veins light brown. MALE. Metanotum dark brown. Legs brown.
Head. Frons coriaceous with irregular small carinae on dorsal half. Frontal carinae present but rather weak. Lateral frontal carinae conspicuous, space between them and compound eyes weakly coriaceous, with some small transverse carinae. Supratorular impression conspicuous. Ocelli prominent; vertex, in frontal view, slightly incised. Vertex in dorsal view coriaceous, with irregular carinae. Vertex posterior coriaceous, weakly rugose. Occiput with thin transverse carinae. Genae sharply margined and expanded, coriaceous and with transverse carinae.
Antenna. FEMALE. Filiform. Antennal formula: 7(5.5): 4(4): 12(4): 9(4): 8.5(4): 8.5(4): 8.5(4): 8(4): 7(4): 8(4): 8(4): 7(4): 15(4). MALE. Filiform. Antennal formula: 7(5): 4(4): 12(4): 10(4): 10(4): 10(4): 9(4): 9(4): 7.5(4): 7(4): 7(4): 7(4): 7(4): 7(4), remaining antennomeres lost. F1 clearly excavated.
Mesosoma. FEMALE. Lateral face of pronotum coriaceous, with transverse carinae dorsally and basally, central area without them. Mesoscutum coriaceous and with faint transverse carinae anteriorly. Parascutal sulcus smooth, shiny. Median ridge blunt, complete, antero-admedian lines conspicuous straight, reaching 1/3 mesoscutum length. Median mesoscutal furrow wide, reaching 1/3 mesoscutum length, with abundant and thin transverse carinae inside and coriaceous near margins; notauli coriaceous, with abundant and thin transverse carinae inside, wider posteriorly. Mesosoma, in lateral view, slightly curved. Scutellum 0.75 to 0.77 times scutum length. Interfoveal line as prominent as lateral margins of scutellum, reaching posterior margin of scutellum or nearly so, scutellar disc coriaceous, with irregular rugose carinae. Lateral margins of scutellum confluent, posterior margin straight, quite narrow. MALE. Interfoveal carina interrupted in middle of scutellar disc, but it can be observed near posterior margin. Lateral margins of scutellum confluent, slightly curved.
Wing. Radial cell 2.0 to 2.1 times longer than wide. R2 straight, very slightly curved near margin of wing.
Distribution. Eastern Palaearctic, Russia; also Nearctic, Virginia (VA) and West Virginia (WV), USA (M. Buffington pers. com.)
Biology. USNM has 2 specimens reared from Allograpta obliqua ( Say, 1823) (DIP., Syrphidae ) det. F. Chris Thompson (M. Buffington pers. com.).
| ZIN |
Russian Academy of Sciences, Zoological Institute, Zoological Museum |
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.