Labellorrhina grimaldii sp. n.

Material studied. Holotype male: MALAYSIA, Selangor, Ulu Gombak, Univ. of Mal. Field Stud. Center, forest, 244 m (800 ft.), Malaise trap, 2–8. III. 1997, H. Hippa, M. Jaschhof & B. Viklund (NRM).

MALE. Similar to L. quantula . Head. Mouthparts, Fig. 2 B. Flagellomere 4, Fig. 4 F. Anterior pronotum with four setae. Thorax. Episternum 1 with 6 setae. Laterotergite with 2 setae. Legs. Femur 1 and 2 distinctly thickened, with convex dorsal and ventral margins, more than half the thickness of femur 3. Tibia 3 with a transverse subapical retrolateral row of 4 or 5 strong setae. Length of basitarsomere 1/length of tibia 1 0.53–0.54. Wing. Fig. 8 B. Wing length 0.96–0.97 mm. Hypopygium, Figs. 9 C and D.

Etymology. The species epithet is dedicated to Dr. David Grimaldi, American Museum of Natural History, New York, to acknowledge his contribution to the study of Lygistorrhinidae .

Discussion. Labellorrhina grimaldii is similar to L. quantula, but is distinguished by, for example, the following characters: antennal flagellomeres shorter than broad (in L. quantula as long as broad), maxillary palpus longer, three­fourths of the length of labellum (only slightly more than half of labellum), the subapical retrolateral comb of strong setae on hind tibia consisting of 4 to five setae (8 to 10 setae), and the tegmen more rectangular in shape (Fig. 9 A and C). Furthermore, the junction between C and R1 seems to be less acute in L. grimaldii than in L. quantula (Fig. 8 B and C), and the dark patch at the apex of R1 is of the same intensity as the subapical patch in L. grimaldii, not weaker than the subapical patch as in L. quantula (this difference is not very clear in Fig. 8 B and C).