Omalaspis Giraud, 1860

Ros-Farré, P. & Pujade-Villar, J., 2011, Revision of the genus Omalaspis Giraud, 1860 (Hym.: Figitidae: Aspicerinae), Zootaxa 2917 (1), pp. 1-28 : 3

publication ID	https://doi.org/ 10.11646/zootaxa.2917.1.1
persistent identifier	https://treatment.plazi.org/id/038A530B-F502-697D-FF58-FE4B5E74D94A
treatment provided by	Felipe
scientific name	Omalaspis Giraud, 1860
status

Treatment

Omalaspis Giraud, 1860: 131 , 155. Type-species: Omalaspis noricus Giraud, 1860 , by monotypy.

Homalaspis Reinhard, 1860: 239 View in CoL ; Förster, 1869: 362–3; Kieffer, 1901: 157–159; Kieffer, 1902: 300–204; Ashmead, 1903: 11; etc.; (misspelling)

Lambertonia Kieffer, 1901: 158–159 View in CoL . Type-species: Lambertonia abnormis Kieffer, 1901 . Synonymized by Weld, 1931: 221

Tavaresia Kieffer, 1901: 158 & 160. Type-species: Tavaresia carinata Kieffer, 1901 . Synonymized by Weld, 1952: 168.

Type species: Omalaspis noricus Giraud, 1860

Redescription of Omalaspis . Head. Lower face with conspicuous facial impression ( Fig 1b View FIGURE 1 ); frons coriaceous, sometimes weakly rugose or with small carinae; frontal carinae present ( Fig 1a View FIGURE 1 ) or absent ( Fig 1d View FIGURE 1 ); lateral frontal carinae conspicuous; supratorular impression always present, in some species ( Fig 1d View FIGURE 1 ) very conspicuous and enlarged, in others difficult to see ( Fig 1c View FIGURE 1 ); vertex incised, although sometimes very weakly, ocelli prominent; vertex posteriorly coriaceous to weakly rugose; occiput coriaceous, sometimes with weak transverse striae; genae margined and expanded, coriaceous or shiny, always with transverse carinae.

Antenna. With conspicuous sensilla, filiform, 13-segmented in females and 14-segmented in males, first flagellomere always excavated in males ( Fig 2e View FIGURE 2 ).

Mesosoma. Lateral surface of pronotum weakly carinate or rugose dorsally, basally with conspicuous transverse carinae. Mesoscutum coriaceous, sometimes punctuate or transversally carinate anteriorly; parascutal sulcus shiny, sometimes with fine or conspicuous transverse carinae; median ridge usually conspicuous and complete, sometimes blunt and weak or effaced posteriorly; antero-admedial lines conspicuous, reaching between 1/2 and 1/3 scutum length; median mesoscutal furrow conspicuous, long, reaching 1/3 scutum length, wide with transverse carinae inside; notauli percurrent, wider posteriorly, coriaceous or shiny and with transverse carinae inside; dorsal 2/3 of mesopleura smooth, sometimes weakly sculptured anteriorly, basally coarsely sculptured, with strong transverse carinae or single furrow. Scutellum emarginated, curved, or incised posteriorly, usually shorter than mesoscutum, with two conspicuous and deep foveae, which can have sculpture inside or smooth; scutellar disc with conspicuous interfoveal line on dorsal surface ( Fig 9a View FIGURE 9 ), (sometimes this carina is very short). Propodeal carinae strong, straight ( Fig 2c View FIGURE 2 ) or slightly curved ( Fig 2b View FIGURE 2 ), central area of propodeum smooth ( Fig 2c View FIGURE 2 ) or with some small carinae ( Fig 2b View FIGURE 2 ).

Wing. Areolet absent, radial cell opened at anterior margin, R1 long, nearly reaching anterior margin of wing, radial cell between 1.8 and 2.5 times longer than wide; wing pubescence not reduced, marginal pubescence present.

Leg. Metatibia with strong longitudinal carina on posterior surface.

Metasoma. Metasomal petiole short, wider than long, with conspicuous longitudinal keels ( Fig 2a View FIGURE 2 ); third abdominal tergum saddle shaped and with two patches of pubescence anteriorly ( Fig 2a View FIGURE 2 ). Fourth abdominal tergum with strong punctures on posterior 2/3. Length female 2.7 to 4.7mm.; male 2.5 to 4.7 mm.

Diagnosis. The shape of the scutellum differentiates Omalaspis from Prosaspicera , Aspicera , Paraspicera , Balna , Pujadella and Anacharoides . In Omalaspis the scutellum is emarginate, curved, or incised ( Figs. 3a View FIGURE 3 , 5b View FIGURE 5 & 9a View FIGURE 9 ), whereas in Prosaspicera , Aspicera and Paraspicera the scutellum ends with a spine (blunt or sharp) (Ros-Farré, 2007: Figs. 1b, 1c & 1d View FIGURE 1 ); Balna (Ros-Farré, 2007: Fig 1a View FIGURE 1 ) has a blunt point, in Pujadella (Ros-Farré, 2007: Figs. 2d & 2e View FIGURE 2 ) the posterior margin of scutellum ends in a sharp point on each side, and Anacharoides has a strong and deep depression (Ros-Farré, 2007: Fig 2a View FIGURE 2 ). The only genus that can be confused with Omalaspis is Callaspidia , because Callaspidia and some Omalaspis species have an emarginate scutellum. Nevertheless, in Omalaspis the scutellar foveae are less than half the length of scutellum ( Figs. 3a View FIGURE 3 , 5b View FIGURE 5 & 9a View FIGURE 9 ), vein R1 is present, the petiole is broader than long ( Fig 2a View FIGURE 2 ), the third metasomal tergum has two lateral patches of pubescence ( Fig 2a View FIGURE 2 ), and the occiput lacks transverse carinae ( Figs 2d & 2e View FIGURE 2 ); in Callaspidia the scutellar foveae are about half as long as scutellum (Ros-Farré, 2007: Fig 2c View FIGURE 2 ), vein R1 is absent, the petiole is at least as long as broad, the third metasomal tergum has a central patch of pubescence (Ros-Farré, 2007: Fig 3c View FIGURE 3 ), and the occiput has strong transverse carinae (Ros- Farré & Pujade-Villar, 2009: Fig 2a View FIGURE 2 ). Moreover, Omalaspis can be identified and distinguished from all other aspicerines thanks to a new character unique to this genus described here: the supratorular impression ( Fig. 2d View FIGURE 2 ).

Kingdom	Animalia
Phylum	Arthropoda
Class	Insecta
Order	Hymenoptera
Family	Figitidae