1921] Alexander: Japanese Crane-Flies. II Pal 
Rhaphidolabina Alexander. 
Rhaphidolabina gibbera sp. n. 
General coloration pale brownish yellow; antennal scape dark 
brown, flagellum brownish yellow; mesonotum exceedingly gibbous; 
mesonotal praescutum with a median brown line that splits at the 
suture into two parallel branches which continue to the abdomen; 
legs pale yellow; wings relatively broad, yellowish gray, sparsely marked 
with dark brown; cell 1st Mz open by the atrophy of m. 
Male—Length about 5.5 mm.; wing, 6.9 mm. Female—Length 
about 5 mm.; wing, 6 mm. 
Rostrum aad palpi brownish black. Antennze 15-segmented; scape 
brownish black, flagellum conspicuously light brownish yellow; basal 
flagellar segments short-cylindrical, the terminal segments more atten- 
uated. Head dark brown, sparsely pruinose. 
Pronotum brown, darker medially. Mesonotum exceedingly gib- 
bous, pale brownish yellow, the insect appearing hump-backed; 
praescutum with a median brown line that divides at the suture, each 
branch continued to the abdomen, the pale area enclosed including 
the centers of the scutum, scutellum and postnotum. Pleura whitish 
testaceous. Halteres brownish testaceous, the knobs dark brown. 
Legs with the coxze whitish testaceous, the fore coxe a little darkened; 
remainder of the legs pale yellow, only the tarsal segments a little 
darkened. Wings relatively broad, with a yellowish gray tinge, sparsely 
variegated with dark brown spots, arranged as follows: At Sc; a large 
area at the origin of Rs; along the cord; outer deflection of R. and along 
Rii2; tips of all the longitudinal veins at the wing-margin; forks of 
My42 and M3,Cm; stigma feebly indicated; veins pale yellow, darker 
brown in the infuscated areas. Venation: Sco some distance before 
the origin of Rs, the distance about one-half longer than the basal 
deflection of Cu; Rs relatively long, strongly angulated at origin; 
Roisia Shorter than the basal deflection of Cm, a Tne longer than 
r—m; deflection of R, close to the tip of Ri; cell 1st Mz open by the. atrophy 
of m; petiole of cell M, a little more than twice the length of the cell; 
petiole of cell M3 a little shorter than the cell; basal deflection of Cu at 
the fork of M. 
Abdominal tergites brown, the basal segments paler; sternites pale 
brown. Ovipositor elongate, dark brown, the tips of the valves bright 
horn-yellow. 
Habitat: Japan. Holotype, o&, Gifu, October 10, 1920 
(K. Takeuchi). Allotopotype, 9, October 2, 1920. 
Rhaphidolabina gibbera is to be referred to Rhaphidolabina 
although cell 7st M: is open and there are other slight differences 
between this fly and the genotype, R. flaveola (Osten Sacken) of 
Northeastern North America. 
