A taxonomic revision of the hover wasp genus Eustenogaster van der Vecht (Insecta: Hymenoptera; Vespidae, Stenogastrinae) Author Saito, Fuki Author Kojima, Jun-Ichi text Zootaxa 2007 1556 1 30 journal article 10.5281/zenodo.178242 ad386ac9-d6e0-4ab3-a5c5-b417d35e2b44 1175-5326 178242 Eustenogaster fumipennis Saito , sp. nov. This species is known only from the female and is similar to E. calyptodoma , but it can be distinguished from E. calyptodoma by the combination of the following characters: body size larger than E. calyptodoma ; extreme apex of clypeus pointed ( Fig. 26 vs . truncate in E. calyptodoma , Fig. 21); mid-tooth of mandible rounded apically ( Fig. 27 vs . Fig. 22 in E. calyptodoma ); frons covered with dense, long hairs; sixth metasomal tergum with sharp spine and wide flat area in front of the spine ( Fig. 28 ); bright markings reduced (see below). Female . Body length (head + mesosoma + first two terga) 18.5–20 mm ( holotype : about 19.5 mm ); forewing length 14.5–15.5 mm ( holotype : about 15.0 mm). Anterior ocellus about 1.2 times larger in width than posterior ocellus ( Fig. 29 ); distance between anterior and posterior ocelli shorter than diameter of posterior ocellus; distance between posterior ocelli about equal to their diameter. First metasomal tergum narrow and long ( 7.5–8.5 mm long), about 6.3 times longer than its maximum height and about 4.8 times longer than the maximum width; second tergum in dorsal view longer than wide ( Fig. 30 ). Color: Body shiny black; bright markings reduced and restricted to the following parts: spot below antennal socket ( Fig. 57 ), paired small lateral spot on clypeus (sometimes absent), small spot at posterodorsal corner of pronotum, paired lateral spots on metanotum (sometimes absent), paired posterior spots on propodeum ( Fig. 31 ), all yellow; second metasomal tergum with very small, yellow or pale-brown lateral spots. Legs dark brown; fore tibia with variable-sized lateral yellow spot. Wings semihyaline, smoky brown, darker along anterior margin of forewing; veins dark brown. Male . Unknown. Type material : Holotype female (deposited in AMNH ) labeled, “Antique: Alojipan, Culasi, 20–xii 1982 , Starr & Godoy, Nest series No. 591” and “GM”. Paratypes : The Philippines : Panay Island: 4Ψ ( IUNH ), Alojipan, Culasi, Antique, 16.xii.1982 , CKS, [1Ψ, Nest series No. 553; 1Ψ, Nest series No. 555; 2Ψ, Nest series No. 556]. Distribution : Philippines : Panay. Etymology . The specific name fumipennis is based on van der Vecht’s manuscript name. This is a compound name formed with a masculine Latin noun, fumi (= smoke) and a feminine Latin noun, pennis (= feather), to refer to the dark-colored wings of this species.