Caliroa vietnamensis spec. nov.
Material.― Holotype, ♀ (RMNH): “N. Vietnam, Ninh Binh, Cuc Phuong N. P. nr. centre cc. 250 m, 10.ii.-15.iii.2000, Mai Phu Quy, RMNH 00”.
Female.— Head and thorax black (fig. 25). Apical third of mandible dark yellow except reddish black apical margin and apex. Cenchri greyish brown. Abdomen dark brown. Legs brown. Longitudinal band on inner side of anterior tibia, anterior tarsal segments 1-4 and all tibial spurs, middle basitarsus, 2nd, most of the 3rd and 5th tarsal segments and hind basitarsus whitish. Wings uniformly brown infuscate. Costa and venation dark brown. Hind wing without closed cubital and middle cell (Rs and M). (Right hind wing with closed cubital cell but it extremely short and rectangular therefore second cubital cell extremely elongated. Probably aberration.) Stigma dark brown with narrow pale lower margin and apex. Postocellar furrows short, deep, straight and divergent, reaching hind margin of head. Head contracted behind eyes. Malar space missing. Temples and vertex sporadically punctured, shiny. Frontal area, minutely, deeply, uniformly and moderately densely punctured, moderately shiny. Frontal area simple, without pentagonal area and not raised or sunken above or below frontal level. Middle and lateral supra-antennal pits shallow and rounded, about as large as middle ocellus. Hind margin of head smooth without occipital carina. Ratio of antennal segments: 5 : 3 : 19 : 11 : 8 : 7 : 6 : 5 : 4. OOL : POL : OCL = 8 : 14 : 7. Antenna short, about 0.8 × as long as head and thorax combined. Anterior and lateral lobes of mesonotum densely, uniformly punctured with small deep punctures, moderately shiny. Mesoscutellum moderately densely punctured with small deep punctures, shiny. Mesoscutellar appendage with hardly visible minute and deep punctures. Metatscutellum smooth and shiny. Mesopleuron moderately shiny with very slight coriaceous sculpture and moderately dense small punctures. Abdominal tergites (including propodeum) with slight coriaceous sculpture, moderately shiny. Sawsheath in lateral view short and widely rounded. Sawsheath in dorsal view in fig. 4. Lancet in fig. 7. Tetth of lancet acute (fig. 7). Claws without inner tooth but with well developed basal lobe (fig. 15). Anal cell with very short petiole. Length: 4.0 mm.
Notes.— The new species is related to Caliroa caviserrula Wei, 1997 (Wei, 1997c). Caliroa caviserrula Wei has greyish brown tarsi and hind wing with one closed middle cell. The new species has all tarsi yellowish white and hind wings without closed middle cell. Furthermore, C. caviserrula has narrow and long sheat in lateral view. The sheath of the new species is short and widely blunt definitely not narrow as figured in Fig. 4. Serrulae of the ovipositor simple and protruding without small spines (fig. 7) in opposit of those of C. caviserrula that has serrulae with flattened teeth and each teeth with small spines (Wei, 1997c). The specific name refers to the habitat of the new species.