Fidiobia longiclava 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

13. Fidiobia longiclava Popovici, Masner & Talamas sp. nov.

Figs 125-130 , 131-137 , 310

Description.

Female. Body length: 0.8-1.0 mm. Colour of body: Variable, melanic specimens are brown with hardly lighter T1; xanthic specimens are light brown to yellow with darker head (Figs 125-128 ).

Head (Figs 131 , 132 , 136 ). Colour of head: brown. Sculpture of head: reticulate-coriaceous. Sculpture of occiput: transverse reticulate coriaceous. Ocellar prominence: absent. Preocellar depression: absent. Paraocellar depressions: absent. OOL / ocellar diameter: OOL equal with ocellar diameter. Orientation of lower half of inner orbits: almost parallel. Sculpture of frons immediately anterior to ocellus: reticulate-coriaceous. Sculpture of frons immediately dorsal to toruli: the same as the sculpture on the rest of frons, but more transverse. Epitorular carina: absent. Distance between toruli: toruli touch each other. Setation of clypeus: six setae. Malar sulcus: absent. Antenna (Fig. 133a, b ). Colour of A1: yellow. Colour of clava: almost similar to the rest of antenna. Number of antennomeres: ten. 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 (A8:A9:A10): 2:2:1.

Mesosoma (Figs 135 , 136 ). 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 third. Antero-admedian line: present. Mesoscutum: flat. Parapsidal lines: absent. Sculpture of internotaular area: absent. Notauli: present as a change in sculpture or pilosity. Shape of notauli: dilated posteriorly and acute anteriorly. 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: shorter than the broadest part of notaulus. Transscutal articulation: complete. Scuto-scutellar sulcus: present only laterad. Fovea on scuto-scutellar sulcus: present on the entire length of scutelo-scutellar sulcus. Mesoscutellum: weakly convex. Shape of mesoscutellum: semicircular. Axillular carina: posterior apex of axillular carinae not abutting posterior edge of mesoscutellum. Axilloaxillular carina: absent. Sculpture of mesoscutellum: absent. Posterior mesoscutellar sulcus: absent. Metascutellum: visible, partially covered by mesoscutellum. Metascutellar carina: present. Width of metasomal depression: the same with 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 on the entire carina. Plica: visible. Posterior end of plica: fused with lateral propodeal carina. Foamy structure on plica: present, fused with foamy structure from lateral propodeal carinae. Foamy structure on metapleural carina: present on the entire carina. Foamy structure on ventral metapleural area: absent. Pilosity of dorsal metapleural area: short hairs on entire surface, uniformly distributed. Pilosity of ventral metapleural area: short hairs uniformly distributed on the entire surface. Longitudinal striation on dorsal mesopleuron: absent. Transepisternal line: complete, straight. Mesopleural carina: absent. Metapleural sulcus: present, complete. Wings (Fig. 137a, 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: surpassing 1/3 the length of fore wing. Spectral veins on fore wing: absent. Marginal setae of fore wing: faintly indicated. 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 (Figs 126 , 127 ): Tergites posterior of T2 exposed and clearly visible. Shape of T1: trapezoidal. Colour of T1: light brown. Lateral setae of T1: numerous. Colour of T2: reddish- brown. Shape of T2: transverse. Anterior pits of T2: merging together in a deep and transverse anterior depression. Sculpture of T2, lateral to anterior pits of T2: absent. Colour of T3-T5: the same as T2.

Male (Figs 129 , 130 ). Similar to the female, but differing in the structure of the antenna (Fig. 134 ).

Etymology.

This species is named for the elongate shape of the clavomeres.

Material examined.

8♀ and 1♂. South Korea: Holotype 1♀, Jirisan , Hamyang-gun , Macheon-myon, Samjeong-li, 35.3486°N, 127.6392°E, 24.viii-15.ix.2003, leg. Tripotin P. (MT) (CNCI).

Paratypes: South Korea, 4♀, Jirisan, Hamyang-gun, Macheon-myon , Samjeong-li , 35.3486°N, 127.6392°E, 24.viii-15.ix.2003, leg. Tripotin P. (MT) (CNCI) ; 2♀, Chungbuk, Yeongdong-gun, Sangchon-myeon, Mulhangyegong-ro , 36.1165°N, 127.8949°E, 4.viii-24.ix.2002, leg. Tripotin P. (MT) (CNCI) ; 1♂, Gangwon-do, Chuncheon Nam-myeon, Hudong-ri , 34.6422°N, 127.6285°E, 31.vii-16.viii.2003, leg Tripotin P. (MT) (CNCI) ; 1♀, Jirisan, Hamyang-gun, Macheon-myon , Samjeong-li , 35.3486°N, 127.6392°E, 15.ix-13.x.2002, leg. Tripotin P. (MT) (CNCI) ; 1♀, Gangwon-do, Chuncheon Nam-myeon, Hudong-ri , 34.6422°N, 127.6285°E, 31.vii-30.ix.2006, leg Tripotin P. (MT) (CNCI) ; 2♀, Gangwon-do, Chuncheon Nam-myeon, Hudong-ri , 34.6422°N, 127.6285°E, 26.vi-30.vii.2006, leg Tripotin P. (MT) (CNCI) .

Distribution.

South Korea (Fig. 310 ).

Biology.

unknown.

Diagnosis.

The most diagnostic feature is the elongated shape of the clavomeres, which are unique among the Palearctic species of Fidiobia with 10-merous antennae. Non-sexually dimorphic characters that can be used to identify males are the notaular lines that are visible as a change in the setation of the mesoscutum and the nearly straight transepisternal line. The transverse anterior pits of T2 that nearly merge medially is unique among Palearctic Fidiobia that have a 10-merous antenna, lack notauli and have the junction of T1-T2 not covered by a row of setae. The color of the body in this species is highly variable, ranging from almost entirely yellow to completely brown.

Figures

Figures 125 - 130. Fidiobia longiclava: 125 melanic ♀, habitus, dorsal view (CNC- 02) 126 melanic ♀, habitus, lateral view 127 xanthic ♀, habitus, dorsal view (CNC- 01) 128 xanthic ♀, habitus, lateral view 129 ♂, habitus, dorsal view (CNC- 03) 130 ♂, habitus, lateral view.

Figures 131 - 137. Fidiobia longiclava: 131 head, frontal view 132 head, dorsal view 133 a antenna (♀), 133 b sensillar formula 134 antenna (♂) 135 mesosoma, dorsal view 136 mesosoma, lateral view 137 a wings 137 b WIP.

Figures 310 - 312. Geographical distribution of: 310 F. longiclava 311 F. nipponica 312 F. platystasioides.