THE CANADIAN ENTOMOLOGIST 191 



NEW NEARCTIC CRANE-FLIES (TIPULID^, DIPTERA) 



PART VIII. 



BY CHARLES P. ALEXANDER, URBANA, ILL. 



As ill the other papers of this series, the types of the new species are de- 

 posited in the collection of the writer, unless stated otherwise. 



Genus Dicranoptycha Osten Sacken. 

 Dicranoptycha sobrina quadrivittata, new subspecies. 



Female. — Length 10 mm.; wing 10.5 mm. 



This variety is similar to typical sobrina, differing as follows; 



Mesonotal priescutum gray, more yeliowish on the disk, clearer gray along 

 the margin; four distinct dark brown stripes, the median pair longest, indistinct 

 in front, clearer behind, lying parallel and separated from one another only by 

 a capiljary gray line. Tuberculate pits distinct, close together, IVing just be- 

 fore the level of the pseudosutural foveae, separated from one another by a 

 distance a iittle less than the diameter of one. Pseudosutural fovese very pale, 

 elongate, linear. Lateral stripes short. Scutal lobes dark brown. Pleura 

 grayish above, paler ventrally. Coxae whitish. Wings gray; veins dark brown; 

 wings very long and narrow; Rs shorter than cell 1st M2, almost square at its 

 origin and running close to Ri; Sc ends just before the fork of the sector. Abdo- 

 minal tergites uniformly dark brown. 



Habitat .—Colorado . 



Holotype.-~9 , Peaceful Valley, Colorado, August 25, 1917, (T. D. A. 

 Cockerell) . 



This species was included in some interesting crane-fly material kindly sent 

 me for study by Prof. Cockerell. It is very different in the details given above 

 from the extensive series of typical sobrina in my collection. More material 

 will be needed to determine the true status of the fly. 



Genus Molophilus Curtis. 

 Molophilus squatnosus, new species. 



Antennae of the male short; general coloration dark gray; male hypopygium 

 with the dorsal pleural appendage flattened, very broad, the dorsal face rough- 

 ened; ventral pleural appendage a powerful black arm that is acute at the tip, 

 which is bent ventrad. 



Male. — Length 3.2-3.4 mm.; wing 4.7-5 mm. 



Rostrum and palpi dark brown. Antennae of the male short, dark brown 

 throughout. Head gray. 



Pronotum dark brown medially, yellowish laterally. Mesonotum gray, 

 the humeral angles paler; scutelum yellowish; postnotum brownish gray. Plleura 

 grayish. Halteres yellow, the knobs a little darker. Legs with the coxae, 

 trochanters and base of the femora yellowish; remainder of the legs brown. 

 Wings whitish subhyaline; veins dark brown; a very indistinct darker clouding 

 along the cord at r, r-m and the basal deflection of Cu\. Venation: deflection 

 of i?»+a short, subperpendicu|ar, shorter than the basal deflection of Cux; fusion 

 of Cu\ and Mz very long, much longer than C«i beyond the fork. 



Abdomen dark brown, the posterior margins of the tergites yellowish, 

 broader on the terminal segments; hypopygium grayish brown. Male hypopy- 

 gium with each half of the tergite contiguous or overlapping at the tips. Dorsal 

 pleural appendage lying transversely, the tip directed proximad and dorsad, 



August, 1919 



