Ceraphron (Larsoceraphron) tobiasi Alekseev, 2004

Ghafouri Moghaddam, Mostafa, Salden, Tobias, Heidari Latibari, Minoo & Butcher, Buntika A., 2025, Review of the subgenus Larsoceraphron Dessart, 1981 of the genus Ceraphron Jurine, 1807 (Hymenoptera, Ceraphronidae) with the description of a new species from Thailand, Journal of Hymenoptera Research 98, pp. 579-602 : 579-602

Ceraphron (Larsoceraphron) tobiasi Alekseev, 2004

Fig. 6 H

Type material

(not examined but original description checked). Holotype • female, Vietnam, Tam Dao , pr. Vĩnh Phúc (= Vinh Phuc), 21°21'N, 105°38'E, 700 m, pines, 14. xi. 1990, S. Belokobylskij leg., ZIN .

Diagnosis.

The last three flagellomeres dark brown; lateral part of occipital carina almost not posteriorly protruding; interocular distance 0.3 × head width; scape slightly shorter than the pedicel and 1 st to 4 th flagellomere combined (Fig. 6 H ); scutoscutellar sulci converge medially, not adjacent to transscutal articulation; mesometapleuron with longitudinal striations in ventral two thirds, smooth in dorsal one third.

Reinterpreted description

(female). Body length 2.3–2.4 mm.

Colour. Head, mesosoma, and coxae black; metasoma, apex of scape, pedicel, and the last three flagellomeres dark brown, the rest of the antenna and legs brown or yellowish-brown; fore wing disc slightly infuscated, hind wing disc transparent.

Head. Width of the head slightly wider than width of the mesosoma; densely pubescent; eyes very large, covered with erect setae; crenulate ocular impressions along the inner margin of the eye; lateral part of occipital carina almost not posteriorly protruding; interocular distance 0.3 × head width; antennae with four apical flagellomeres distinctly thickened (Fig. 6 H ); scape slightly shorter than the pedicel and 1 st to 4 th flagellomere combined (Fig. 6 H ); pedicel about equal to the length of the 1 st flagellomere (Fig. 6 H ); 3 th and 4 th flagellomeres about equal in length and width (Fig. 6 H ); 5 th – 7 th flagellomeres transverse, width of the 5 th flagellomere 1.5 ×, of the 6 th flagellomere 1.2 ×, and of the 7 th flagellomere 1.5 × its length, respectively (Fig. 6 H ).

Mesosoma. Mesoscutum transverse, width 2.0 × its length; notauli incomplete, not adjacent to transscutal articulation; scutoscutellar sulci converge medially, not adjacent to transscutal articulation; mesometapleuron with longitudinal striations in ventral two thirds, smooth in dorsal one third; lateral propodeal projections thin and long and oriented posteriorly, translucent and amber-coloured; median propodeal projection overhangs the anterior margin of the metasoma with its apical half.

Legs. Metafemur distinctly thickened, length more than 2.0 × its width.

Metasoma. Six basal longitudinal carinae on the syntergite; anterolateral syntergite with row of setae.

Male. Unknown.

Host.

Unknown.

Distribution.

Oriental ( Vietnam).

Remarks.

This reinterpreted description is based on a transliteration of the original description, with terminology clarified and standardised, especially for antennal terms. The original description of the antennal segments measurements is ambiguous when compared to the corresponding illustration ( Alekseev 2004). It is unclear whether the author refers to the numbering of the flagellomeres or the antennomeres (which include the scape and pedicel) when describing the 4 th and 5 th segments as being approximately equal in length and width, and the 6 th – 8 th segments as being transverse. In reinterpreted description, we refer to the corresponding flagellomeres, maintaining the originally determined ratios but revising the numbering of the flagellomeres to align with the redescription and the illustration. The type specimen was not found (pers. comm. Belokobylskij S. A.), so no images were taken, and no re-examination was conducted.

Figures

Figure 6. Ceraphron (Larsoceraphron) spp. (modified drawings from the original descriptions of the species (Dessart 1981; Alekseev 2004 )) A – E Ceraphron (L.) huggerti F – G Ceraphron (L.) sylviae H Ceraphron (L.) tobiasi A habitus, dorsal view B mesosoma, lateral view C male genitalia, ventral view D tergite 9 and 10, dorsal view E antenna (male) F antenna (male) G antenna (female) H antenna (female).