INS^CUTOR INSCITI^ MENSTRUUS 136 



A NEW SPECIES OF TIPULA INJURIOUS TO 

 PASTURE LANDS 



(Tipulidw, Dipt era) 



By CHARLES P. ALEXANDER 



The following undescribed species of crane-fly was kindly 

 sent to me for determination by Messrs. Packard and Thomp- 

 son. The species, together with several additional members 

 of the genus, is recorded as doing material injury to the in- 

 terior pasture lands of California. 



Tipula graminivora, new species. 



Small species (male not over 10 mm. in length) ; males full- 

 winged, females with the wings semi-atrophied ; general col- 

 oration gray, the mesonotal praescutum with four dark brown 

 stripes ; wings of male yellowish subhyaline, clouded with 

 grayish brown ; ninth tergite of the male hypopygium with a 

 very broad, V-shaped median notch; tergal valves of ovi- 

 positor flattened, terminating in a curved hook. 



Male. — Length, 8.5-9.3 mm. ; wing, 9-9.5 mm. 



Female. — Length, 12.5-14 mm. ; wing, 3.1-3.3 mm. 



Male. Frontal prolongation of head gray ; nasus stout ; 

 palpi brown, the basal segment pruinose. Antennae short, dark 

 brown throughout, the flagellar segments short-cylindrical, 

 feebly constricted near midlength. Head gray ; a row of 

 setje on vertex parallel with inner margin of eye. 



Mesonotal praescutum light brown with four dark brown 

 stripes, the intermediate pair separated by a narrow median 

 line of the ground-color, the lateral stripes with paler centers ; 

 scutum gray, the lobes darker gray ; remainder of mesonotum 

 gray, a capillary, dark brown, median line extending from 

 scutum to base of abdomen ; scutellum and postnotum with 

 scattered black setae. Pleura gray. Halteres brown, the knobs 

 darker. Legs with the coxae gray ; trochanters dark brown ; 

 remainder of the legs dark brown, the femoral bases broadly 

 obscure yellow, narrowest on fore legs, broadest on the pos- 

 terior legs where only the broad tips are infuscated. Wings 

 yellowish subhyaline, handsomely clouded with grayish brown; 



