S. Mahunka szerk.: Folia Entomologica Hungarica 59. (Budapest, 1998)

side the hind occipital carina. Head behind the eyes subparalell, hind margin slightly emarginated with occipital carina. OOL : POL : OCL = 2.7 : 1.0 : 2.4. Clypeal emargination trapezoid, 0.4 times as long as median length. Antenna mainly black, white: 6-7th segments entirely, lower parts of 8—9th segments, 5th segment dominantly but with basal black stripe and narrow apices of 1st and 3rd segments. Antenna/costa length proportion = 24/25. Proportions of the lengths of antennái segments: 3rd 39: 4th 25: 5th 20: 6th 16: 7th 15: 8th 15: 9th 15. Pronotum black with white hind margin, propleuron, prosternum and tegulae white. Mesonotum black, scutellum black with large elliptic white spot, mesoscutellar appendage white, postnotum black, metascutellum white. Head, mesonotum and mesopleuron with short, white, dense pubescence about 2/3 times as long as the diameter of front ocellus. Cenchri white. Length of a cenchrus/distance of the two cenchri = 8/17. Upper 2/3 of mesopleuron white, lower 1/3 black. Mesopleuron subpyramidally raised. Mesosternum black. Legs brownish white, femora and tibiae with a longitudinal black line, although this line only slightly developed on middle tibiae. Claws moderately deeply incised, apical tooth longer than subapical one. Ventral abdominal segments smudgy white, their basal part brown. First abdominal tergum black. Abdominal terga from 2nd to 5th gradually turning from black to reddish brown. 2nd tergum only with apical reddish-brown triangular patch, 5th tergum mainly reddish brown with two lateral black spots. 6-9th terga including ovipositor reddish brown. Wings yellowish hyaline, costa and stigma brown, venation black. Length: 11.5 mm. Length of fore wing: 9.5 mm. Holotype female: Gaoligongshan Nat. Res., 100 km West of Baoschan, China, 14-21. VI. 1993, E. Jednek and O. Sausa leg. The holotype is deposited in the Hungarian Natural History Museum Budapest. The new species runs to Tenthredo cretata Konow, 1898 in Malaise's (1945) key but latter has 2nd-5th abdominal segments entirely red, its mesopleuron is black with two white spots and apical abdominal segments (6-9th) are also black. T. cretata is a larger species 13.5-16.0 mm. Fig. L: Basal 5—7th serrulae of Tenthredo elongatissima sp. n. (original) Fig. 2.: Basal 5—6th serrulae of Tenthredo flatopleura Singh et Saini (after Singh et Saini 1987a)