Zygota congener (Zetterstedt, 1840)

Hübner, Jeremy, Chemyreva, Vasilisa, Macek, Jan & Kolyada, Victor, 2024, A review of the genus Zygota (Hymenoptera, Diapriidae) in Germany with taxonomic notes on this genus and its distinction from Pantoclis, ZooKeys 1207, pp. 325-353 : 325-353

Zygota congener (Zetterstedt, 1840)

Figs 6 A ‒ F , 7 A ‒ F

Psilus (Belyta) congener Zetterstedt, 1840: 415 , female, male.

Zygota caligula Buhl, 1997: 53, female. Syn. nov.

BOLD BIN.

BOLD: AAI 8609.

Material examined.

Holotype of Zygota caligula : Norway: Mosvik , 14 - Aug- 1994, “ MT. JT: 19 ”, “ Smafa ”, P. N. Buhl det. 1996 , Holotype, ZMUC 00021242 , Zygota caligula , 1 ♀ . Germany: BY: Garmisch-Partenkirchen , 02 - Aug- 2018, 13 - Aug- 2018, 09 - Oct- 2018, 4 ♂ ; Grafenaschau , 2013, 1 ♂ (Fig. 6 E )

Diagnosis.

Both sexes: postmarginal vein distinctly shorter than radial cell length (Fig. 7 F ); occipital pit present; mesopleuron with only small bare area medially or entirely pubescent (Fig. 6 D ); axillar depression with scattered setae and only 2 verriculate tubercles; propodeal spiracle distinctly enlarged (Fig. 6 A ); base of T 2 with lateral corners (Fig. 6 A ); S 2 without micro-puncture sculpture anteriorly. Female: female antenna with A 6 ‒ A 14 about 1.25 times as long as wide (Fig. 7 B, C ); T 2 punctuated (Fig. 7 B, C ); T 8 (apical) with median keel between cerci (Fig. 6 E ). Male: A 3 strongly emarginate (Fig. 6 B ); fore tibia slightly modified, weakly humped interiorly, entirely pubescent and with a row of enlarged setae along its inner side (Fig. 6 C ); genitalia as in Z. walli sp. nov. and Z. abdominalis (Fig. 5 A ‒ D ), digitus armed with 3 or 4 teeth.

Remarks.

The female of Zygota congener is best recognized by the large propodeal spiracles (Fig. 6 A ) and the sharp median keel between the cerci on the apical tergite of the female (Fig. 6 E ). These two characters, together with other peculiarities of the morphology of Z. congener , correspond to the characters of the holotype of Z. caligula Buhl. For this reason, Z. caligula is considered here to be a junior synonym of Z. congener .

Distribution.

Austria, Czech Republic, Denmark, Finland, Germany, Russia (European part), Slovenia, Sweden.

Figures

Figure 5. Male genitalia of Zygota and Pantoclis A Z. walli sp. nov. B – D Z. abdominalis E P. barycera F – H Pantoclis sp. 1 I – L Pantoclis sp. 2 C, G, I, K lateral view A, B, D, E, F, H, J, L ventral view.

Figure 6. Zygota congener, male (B – D, F) and female (A, E) A mesosoma and petiole in dorsal view B A 1 – A 5 in ventral view C fore tibia D head and mesosoma in lateral view E apex of metasoma in dorsal view (Z. caligula Buhl, holotype) F antennae in ventral view. Scale bars: 0.5 mm (D); 1 mm (F).

Figure 7. Holotype of the Zygota caligula Buhl A face B body in dorsal view C body in lateral view D metasoma, ventral view E type material labels F fore wing venation. Scale bar: 0.5 mm.