Fidiobia communis Popovici, Masner & Talamas, 2022

Popovici, Ovidiu Alin, Masner, Lubomir, Lahey, Zachary & Talamas, Elijah, 2022, Revision of the Palearctic species of Fidiobia Ashmead (Hymenoptera, Platygastroidea), Journal of Hymenoptera Research 92, pp. 23-144 : 23

4. Fidiobia communis Popovici, Masner & Talamas sp. nov.

Figs 56-60 , 301

Description.

Female. Body length: 0.8-0.9 mm. Colour of body: melanic (Figs 56a , 58 ).

Head (Fig. 56a ). Colour of head: brown. Sculpture of head: reticulate-coriaceous. Sculpture of occiput: transverse reticulate coriaceous. Ocellar prominence: absent. Preocellar depression: present. Paraocellar depressions: present. OOL / ocellar diameter: OOL equal with ocellar diameter. Orientation of lower half of inner orbits: visibly divergent. Sculpture of frons immediately anterior to ocellus: reticulate-coriaceous. Sculpture of frons immediately dorsal to toruli: the same with the sculpture from the rest of frons, but more transverse. Epitorular carina: present. Distance between toruli: equal to the transverse diameter of torulus. Setation of clypeus: two setae. Malar sulcus: absent. Antenna (Fig. 56b ). Colour of A1: light brown. Colour of clava: slightly darker than the rest of antenna. Number of antennomeres: nine. Shape of A1: more or less cylindrical. Ventral (inner) lamella on A1: present as a trace in the apical part of A1. Length of A3 of female: distinctly shorter than A2. Sensillar formula (A7:A8:A9): 2:2:1.

Mesosoma (Figs 56a , 59 ). Colour of mesosoma: brown. Mesosoma: weakly compressed dorsoventrally. Pronotum in dorsal view: narrow, collarlike. Transverse pronotal sulcus: present as a narrow groove along anterior rim of pronotum. Posteroventral end of transverse pronotal sulcus: dilated. Lateral pronotal area: sculptured only on the dorsal half. Antero-admedian line: absent. Mesoscutum: weakly convex. Parapsidal lines: absent. Sculpture of internotaular area: absent. Notauli: present, incised. Shape of notauli: dilated posteriorly and acute anteriorly. Outer edge of notauli: almost collinear with axillular carina. Orientation of inner edge of notauli: converging posteriorly. Length of notauli: at most 0.3 times as long as mesoscutellum, measured along midline. Length of notaulus / maximum width of notaulus: 2.0-2.9 times as long as wide. Distance between notauli: greater than the broadest part of notaulus. Transscutal articulation: complete. Scuto-scutellar sulcus: absent. Fovea on scuto-scutellar sulcus: NA. Mesoscutellum: weakly convex. Shape of mesoscutellum: subrectangular. Axillular carina: posterior apex of axillular carinae touching the posterior edge of mesoscutellum. Axilloaxillular carina: present. Sculpture of mesoscutellum: absent. Posterior mesoscutellar sulcus: absent. Metascutellum: entirely visible. Metascutellar carina: present. Width of metasomal depression: greater than the length of lateral propodeal carina. Median carina between lateral propodeal carinae: absent. Transverse carina between lateral propodeal carinae: present. Foamy structure on transverse carina between lateral propodeal carinae: present. Foamy structure on metasomal depression: absent. Lateral propodeal carinae: parallel. Foamy structure on lateral propodeal carina: present only on the posterior half of the vertical part. Plica: visible. Posterior end of plica: free, converging with metapleural carina. Foamy structure on plica: present, fused with foamy structure from metapleural carinae. Foamy structure on metapleural carina: present on the entire carina. Foamy structure on ventral metapleural area: present. Setation of dorsal metapleural area: sparse, long setae in 2-3 longitudinal rows. Setation of ventral metapleural area: dense, long setae on posteroventral half. Longitudinal striation on dorsal mesopleuron: present. Transepisternal line: absent. Mesopleural carina: present. Metapleural sulcus: present, from incomplete to complete. Wings (Figs 60a,b ): macropterous. Apex of fore wing: rounded. Colour of fore wing: infuscate. Transverse brown band on fore wing: absent. Submarginal vein in fore wing: present. Length of submarginal vein in fore wing: not surpassing basal 1/4 the length of fore wing. Spectral veins on fore wing: absent. Marginal setae of fore wing: present, well visible. Disc of fore wing: with spinulose microtrichia. Legs. Colour of fore tibia: light brown. Colour of fore tarsus: light brown. Colour of middle femora: light brown. Colour of middle tibiae: light brown. Colour of middle tarsus: light brown. Colour of hind femora: light brown. Colour of hind tibiae: light brown. Colour of hind tarsus: light brown.

Metasoma. Posterior of T2 some or all tergites may be retracted under T2. Shape of T1: trapezoidal. Colour of T1: brown. Lateral setae of T1: 2 pairs. Colour of T2: brown. Shape of T2: longer than wide. Anterior pits of T2: distinctly separated. Sculpture of T2, lateral to anterior pits of T2: absent. Colour of T3-T5: the same as T2.

Male (Fig. 57a ): similar to the female, differing in the structure of the antenna (Fig. 57b ).

Etymology.

This species is named " communis " because of the absence of any peculiar or striking characters.

Material examined.

6♀ and 1♂. Romania: Holotype 1♀, Suceava, Călimani Mts., road of Maria Teresa , 47.12346°N, 25.20249°E, 13-20.vii.2012, leg. Popovici O. (SS) (OPPC0577).

Paratypes: Czech Republic: 1♀ , Bohemia, Celákovice Lipovka Res., 50.177°N, 14.759°E, 2-19.vi.1994, leg. Macek J. (MT) (CNCI) .

Estonia: 2♀, 1.5 km NE Sööru, 58.66111°N, 26.88531°E, 4-11.vii.2011, leg. Soon V. (SN) (OPPC0664, 0665) .

Romania: 1♂, Suceava, Călimani Mts., road of Maria Teresa , 47.12346°N, 25.20249°E, 13-20.vii.2012, leg. Popovici O. (SS) (OPPC0578) .

Ukraine: 1♀, Transcarpathia, Svydovets , 2-3 km NW of Kvasy, 48.15247°N, 24.26621°E, 7.v-5.vi.2014, leg. Varga O. (TT) (OPPC0230) ; 1♀, Transcarpathia, Svydovets , 2-3 km NW of Kvasy, 48.15247°N, 24.26621°E, 5-29.vi.2014, leg. Varga O. (TT) (OPPC0146) .

Distribution.

Czech Republic, Estonia, Romania, Ukraine (Fig. 301 ).

Diagnosis.

Fidiobia communis is close to F. hofferi because of its general habitus, the metascutellum that is visible in dorsal view and the presence of epitorular carinae. These two species differ mainly by the sculpture of the dorsal mesopleuron (reduced in F. hofferi and extending to the middle of the mesopleuron in F. communis ), setation of the ventral metapleural area (few, sparse setae in F. hofferi and dense, long setae in F. communis ) and the length of the marginal setae on the fore wings (very short, hardly visible in F. hofferi and clearly visible in F. communis ).

Figures

Figures 56 - 60. Fidiobia communis: 56 a female, habitus, dorsal view (Holotype) 56 b antenna (♀) 57 a male, habitus, dorsal view (OPPC 0578) 57 b antenna (♂) 58 female, habitus, lateral view 59 female, mesosoma, lateral view 60 a wings 60 b WIP.

Figures 301 - 303. Geographical distribution of: 301 F. communis 302 F. filicornis (Blue area-data from Buhl 2014. Red area-our data) 303 F. flaviabdominalis (Blue area-data from Veenakumari et al. 2018. Red area-our data).