Phoxoserphus Lin, 1988

Abe, Junta & Kolyada, Victor, 2021, First record of the genus Phoxoserphus Lin, 1988 (Hymenoptera: Proctotrupidae) from Japan, Zootaxa 5057 (4), pp. 597-600 : 597-598

Genus Phoxoserphus Lin

Phoxoserphus Lin, 1988: 20 (type species: Phoxoserphus chikoi Lin, 1988 by original designation)

Diagnosis. Mandible sharpened apically and with a small subapical tooth on the upper edge. Mesopleuron with horizontal groove ( Fig. 3 ). Metapleuron with large smooth area; its upper anterior part without carina ( Fig. 4 ). Anterior margin of radial cell of forewing about 1.6 to 1.8 times as width of stigma; basal length of radial vein longer than its width. The longest spur of hind tibia about 0.4 times as long as hind basitarsus. This genus similar to Cryptoserphus Kieffer, 1907 and Tretoserphus Townes 1981 . Differences between the genera due to the following characters: the anterior margin of the radial cell of the forewing about 1.6 to 1.8 times as long as the width of the stigma (similar in Cryptoserphus and Tretoserphus ); the mandible with a small subapical tooth on the upper edge (similar in Tretoserphus and sometimes Cryptoserphus ); the longer spur of the hind tibia about 0.4 times as long as the hind basitarsus (0.5–0.8 times in Cryptoserphus and about 0.4 times in Tretoserphus ); the carina on the upper anterior part of the metapleuron lacking (absent in Cryptoserphus and present as a fine short carina in Tretoserphus ).

Distribution. Palaearctic Region: Japan, new record (Kyushu and Ryukyus); Oriental Region: Taiwan.

Host. Unknown.

Figures

FIGURES 2–7. Phoxoserphus chikoi from Fukuoka (2–5: female, 6 and 7: male): 2, 6: lateral view; 3: lateral view of head, pronotum and mesopleuron; 4: lateral view of metapleuron and propodeum; 5: ovipositor sheath; 7; base of syntergite with grooves. Scale bars: 2 and 6—1 mm; 3, 4, 5, and 7—0.1 mm.