2018 Volume 2018 Issue 47 Pages 73-83
Two ichneumonid parasitoids of the genera Aptesis Förster, 1850, and Javra Cameron, 1903, associated with a serious forest pest of sawfly, Fagineura crenativora (Tenthredinidae, Nematinae), are studied. A new species, A. flavitrochanterus sp. nov. is described. This species resembles A. melana Li & Sheng, 2013, and A. opaca (Cushman, 1937), but the females can be distinguished by the following combination of character states: hind trochanter and trochantellus largely white to yellow (black to brown in A. melana and A. opaca); first metasomal tergite 1.4–1.85 times as long as maximum width (1.3 times in A. melana); body length 3.5–5.5 mm (8.5–10.0 mm in A. opaca); ovipositor sheath longer than first metasomal tergite and 0.9–1.0 times as long as hind tibia (shorter than first metasomal tergite in A. opaca and 0.8 times as long as hind tibia in A. melana). A Korean species, J. coreensis (Uchida, 1930) is newly recorded from Japan with the first host record. Keys to Japanese species of both genera are also available
