A NEW SPECIES OF TIPULA WITH VESTIGIAL WINGS. 



BY R. W. DOANE, STANFORD UNIVERSITY, CAL. 



Tipula vesiigipennis n. sp. Brownish yellow; head and rostrum yellowish, 

 grayish above, sometimes with a brownish stripe: palpi yellowish at the base, brown- 

 ish toward the tip; first, second and thirtl segments of the antenna? yellow, the latter 

 darker toward the tip, the remaining segments brownish, growing darker toward the 

 tip of the antennae, finely pubescent, with the black bases slightly swollen and fur- 

 nished with a whorl of four or five rather stiff hairs; collar yellowish with median 

 and lateral brownish spots; dorsum of thorax light yellow, dorsal stripes yellow, 

 often indistinct, median stripe divided by a rather broad yellow line; pleura and 

 coxffi hoary; scutellum yellow, lighter laterally, with a narrow median brown line; 

 metanotum light yellow; hal teres yellow, knobs black; femora and tibia yellowish, 

 much darker toward the tip; tarsi brownish to blackish; abdomen with broad dorsal, 

 lateral and ventral brown stripes; seventh and eighth segments often almost wholly 

 blackish or brownish; posterior margin of the eighth sternite of the male gently 

 curved, with a broad shallow median incision which is usually filled with the light 

 colored membrane from which arise two tufts of very light yellow hairs, these tufts 

 cross each other close to the base at an angle of abovit forty-five degrees ; to the lateral 

 margins of this sternite are attached rather broad sub-triangular chitinized plates 

 which stand at right angles to the sternite ; posterior margin of the ninth tergite with 

 a broad rather shallow circidar incision from the middle of which arise two short 

 triangular processes; ovipositor long, rather stout, upper valves straight, acute, 

 low^er valves reaching almost to the tip of the upper valves, tips rounded; wings 

 small, more or less distorted, sometimes but little longer than the halteres, sometimes 

 twice as long; veins more or less distinct but crowded together and deformed as 

 shown in the figures. Length, male 15 mm., wing 5 to 9 mm.; Female 22 mm., 

 wing 5 mm. to 6 mm. Hab. San Francisco, Cal., four males, three females. Col- 

 lected by Mr. F. X. Williams, Stanford University, one female. 



Osten Sacken in his "Western Diptera" (p. 209) after referring to Tipula 

 proecisa Lw. as a common California species says, "I have two males from Brooklyn, 



