Fidiobia flaviabdominalis Veenakumari, Popovici & Buhl, 2018

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

6. Fidiobia flaviabdominalis Veenakumari, Popovici & Buhl, 2018

Figs 74-79 , 303

Fidiobia flaviabdominalis Veenakumari, Popovici & Buhl, 2018: 556, 568.

Description.

Female. Body length: 0.5 mm. Colour of body: xanthic, head and mesosoma brown, metasoma light brown to yellow (Figs 74 , 75 ).

Head (Figs 77 , 78 ). Colour of head: light brown. Sculpture of head: alutaceous. Sculpture of occiput: transverse alutaceous. Ocellar prominence: absent. Preocellar depression: present. Paraocellar depressions: present. OOL / ocellar diameter: OOL around 2 times ocellar diameter. Orientation of lower half of inner orbits: visibly divergent. Sculpture of frons immediately anterior to ocellus: alutaceous. Sculpture of frons immediately dorsal to toruli: the same as the sculpture on 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. 76 ). Colour of A1: light brown. Colour of clava: strongly differs from the rest of the antenna (clava brown, rest of antenna yellow). 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 77 , 78 ). Colour of mesosoma: light brown. Mesosoma: weakly compressed dorsoventrally. Pronotum in dorsal view: present mostly as lateral shoulders. Transverse pronotal sulcus: present as a narrow groove along anterior rim of pronotum. Posteroventral end of transverse pronotal sulcus: not dilated. Lateral pronotal area: sculptured only on the dorsal half. Antero-admedian line: absent. Mesoscutum: weakly convex. Parapsidal lines: absent. Sculpture of internotaular area: smooth to coriaceous. Notauli: absent. Shape of notauli: NA. Outer edge of notauli: NA. Orientation of inner edge of notauli: NA. Length of notauli: NA. Length of notaulus / maximum width of notaulus: NA. Distance between notauli: NA. Transscutal articulation: complete. Scuto-scutellar sulcus: absent. Fovea on scuto-scutellar sulcus: NA. Mesoscutellum: weakly convex. Shape of mesoscutellum: semicircular. Axillular carina: posterior apex of axillular carinae touching the posterior edge of mesoscutellum. Axilloaxillular carina: absent. Sculpture of mesoscutellum: absent. Posterior mesoscutellar sulcus: absent. Metascutellum: not visible, covered by mesoscutellum. 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. 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 on entire surface, uniformly distributed. Setation of ventral metapleural area: sparse, long setae on the entire surface, uniformly distributed. Longitudinal striation on dorsal mesopleuron: present. Transepisternal line: absent. Mesopleural carina: present. Metapleural sulcus: present, incomplete. Wings (Fig. 79a, 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 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: yellow. Colour of fore tarsus: yellow. Colour of middle femora: yellow. Colour of middle tibiae: yellow. Colour of middle tarsus: yellow. Colour of hind femora: yellow. Colour of hind tibiae: yellow. Colour of hind tarsus: yellow.

Metasoma (Fig. 74 ): Posterior of T2 some or all tergites may be retracted under T2. Shape of T1: trapezoidal. Colour of T1: light brown. Lateral setae of T1: 2 pairs. Colour of T2: light brown apically and darker basally. 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: darker than T2.

Material examined.

36♀ and 1♂. Japan : 2♀, Kyushu, Fukuoka Mt. Hiko , 33.1259°N, 130.7876°E, 21-29.vii.1989, leg. Takeno K. and Sharkey M. (MT) (CNCI) ; 1♂, Aichi Pref, Mt Sanage-yama , 35.182°N, 137.133°E, 25-31.vii.1989, leg. Takano A. (MT) (CNCI) .

South Korea: 25♀, Jeollabuk-do, Buan-gun Samae-myeon Yuyu village , 35.4191°N, 127.2755°E, 5.vii-14.viii.2007, leg. Tripotin P. (MT) (OPPC0785, 0786, 0787, 0788, 0793, 0792, 0789, 0784, 0790, 0791, 0805, 0809, 0810, 0811, 0806, 0405, 0406, 0647, 0783, 0807, 0404, 0808, 0782, 0477, 0369) ; 1♀, Jeollabuk-do, Buan-gun Samae-myeon, Yuyu village , 35.4191°N, 127.2755°E, 21.iv-27.v.2007, leg. Tripotin P. (MT) (OPPC0418) ; 1♀, Chungnam, Daejeon-si, Wadong , 36.3601°N, 127.2345°E, 20.v-19.vi.2007, leg. Tripotin P. (MT) (OPPC485) ; 2♀, Chungnam, Daejeon-si, Wadong , 36.3601°N, 127.2345°E, 19.vi-24.vii.2007, leg. Tripotin P. (MT) (OPPC0056 - no head, 0054) ; 1♀, Chungnam, Daejeon-si, Wadong , 36.3601°N, 127.2345°E, 21.viii-25.ix.2007, leg. Tripotin P. (MT) (OPPC0545) ; 1♀, Chungnam, Daejeon-si, Wadong , 36.3601°N, 127.2345°E, 25.ix-17.xi.2007, leg. Tripotin P. (MT) (OPPC0542) ; 1♀, Chungbuk, Okcheon-gun Dongi-myeon, Soesan-li , 36.2764°N, 127.6131°E, 8-23.vii.2004, leg. Tripotin P. (MT) (OPPC0728) ; 2♀, Jirisan, Hamyang, Songjeon-li , Munsu-sa , 35.41232°N, 127.7303°E, 28.vii-16.viii.2004, leg. Tripotin P. (MT) (OPPC0499, 0500) .

Distribution.

India (Veenakumari et al. 2018), Japan, South Korea (Fig. 303 ).

Biology.

unknown.

Diagnosis.

Fidiobia flaviabdominalis is superficially similar in size and general habitus to F. insoonae , F. polita and F. politoides . It differs from F. insoonae mainly by of the absence of notauli (present in F. insoonae ) and to F. polita and F. politoides because of the length of T2 (T2 is longer than wide in F. flaviabdominalis and wider than long in F. polita and F. politoides ).

Comments.

Fidiobia flaviabdominalis is one of the smallest species of the genus in the Palearctic region. It is peculiar among Palearctic Fidiobia because of its reduced size and the light color. Our specimens differ from the original description by the presence of longitudinal striae on the lower third of the mesopleuron and A4 longer than A3 in females.

Figures

Figures 74 - 79. Fidiobia flaviabdominalis: 74 habitus, dorsal view (OPPC 0405) 75 habitus, lateral view (OPPC 0786) 76 antenna (♀) (OPPC 0647) 77 mesosoma, dorsal view 78 mesosoma, lateral view 79 a wings (OPPC 0647) 79 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).