S. Mahunka szerk.: Folia Entomologica Hungarica 58. (Budapest, 1997)

tinct. Lateral furrows broad, sunken and reaching hypothetical hind margin of head. Postocellar area broader than long (4 : 3) with a notch in its posterior half. Head narrowing behind eyes. LTD : ICD = 3.1 : 1. Mesoscutellum dome-shaped with a faint longitudinal carina, appendage carinate. Mesepisternum obtusely raised, mesosternum without thorns. Apical tooth of tarsal claw (Fig. 8) shorter than subapical one. Metabasitarsus equal to following three joints combined. IATS : MB : OATS = 2 : 4.8 : 2.2. Metafemur almost as long as metatibia. Head subshining and covered with minute shallow and scattered punctures, more distinct on frontal area. Mesonotum minutely and densely punctured as compared to head. Scutellum with a few shallow punctures, appendage impunctate. Mesepisternum with a few fine and scattered punctures. Propodeum polished and abdomen microstriated. Lancet as in Fig. 13 with 30 serrulae, each serrula having a single AST and 6-7 PST. Male - Average length 12.5 mm. Similar to female except frontal area with a nebulous spot and mesepisternum entirely black. Male genitalia: penis valve (Fig. 17), gonoforceps (Fig. 20). Holotype - Female, Sikkim, Gangtok, 1700 m, 8. V. 1986. Paratypes - 1 female and 2 males with same data as of holotype. Population variation - None. Distribution - India, Sikkim. Remarks - Tenthredo balbiri sp. n. is related to 77. wittmeri Muche, but can be distinguished as follows: antenna entirely black except reddish brown scape (antenna black with an outer spot on segment 3 and outer side of 4 and 5 yellowish white in T. wittmeri), apical tooth of tarsal claw shorter than subapical (a little longer in 77. wittmeri). Etymology - The species is named in honour of Dr. Balbir Singh, lecturer, Govt. College, Tanda (Punjab), a sawfly taxonomist. Tenthredo dirangensis sp. n. (Figs 4, 9, 14, 18,21) Female - Average length 15 mm. Body golden yellow, pale white are mandibles except apices, clypeus, labrum. Dark brown to black are mandible apices, abdominal terFig. 15. Lancet of Tenthredo sikkimensis sp. n.