1010 Charles Paul Alexander 



Coloration dark brown; abdomen yellow, with a broad sublateral brown stripe on both 

 sternites and tergites; abdominal segments beyond posterior row of spines brighter, more 

 yellowish. 



Characters of head as in genus. Cephalic crest very small. Labrum broad. Pronotal 

 breathing horns short, slightly curved. Mesonotal prescutum with fine transverse wrinkles; 

 two blunt lateral tubercles, and behind these, on either side of median line, two smaller 

 flattened ledges which are often bifid at their tips. (Similar ledges, but much less prominent, 

 occur in T. runlata.) 



Abdominal tergites with subapical armature weak, spines varying in number from six to 

 eight, those of posterior segments larger; pleural spines long and slender, one on each ring; 

 sternal spines powerful, four to six in number, no spines on base of posterior ring. Female 

 Cauda with sternal valves long and slender, but little shorter than tergal valves; dorsal lobes 

 of Cauda four in number, posterior pair very powerful, lateral pair small, anterior median 

 pair lacking. 



Nepionotype. — Ithaca, New York, March 22, 1913. 



Neanotype. — With type. 



Paratypes. — Numerous larvae and pupae with types, April 26, 1917; March 22, 1913; etc. 



Tipula ignobilis Locw 



[ 1863 Tipula ignobilis Loew. Berl. Ent. Ztschr., vol. 7, p. 2S0. 



The adult flies of Tipula ignobilis are not common in collections, clue 

 in part to their retiring habits. The larvae, however, are common in 

 their preferred habitat, saturated moss cushions. 



At Orono, Maine, numerous larvae were taken in wet moss on June 



17, 1913, associated with other larvae, such as those of Rhaphidolabina, 



Tricyphona, Pedicia, and Tipula nobilis. At Ithaca, New York, on April 



23, 1917, four very small larvae were found in wet cushions of moss (Ambl}^- 



stegium). They grew very rapidly, emerging as adults on May 21. 



On May 22 this moss was carefully examined and about thirty fully grown 



to rather inunature larvae of this species were taken. They were 



associated with equally numerous larvae of Dicranomyia stulta 0. S. At 



Needham's Glen, the species occurred in the same moss that earlier 'in 



the season harbored Tipula collaris and T. oropezoides. On June 14 



two teneral adults of T. ignobilis were captured, in company with 



Dicranornyia stulta, Geranomyia canadensis, Dactylolabis montana, and 



other species. The species is very common at the Indian Ladder, Helder- 



berg Mountains, New York. 



Larva. — Length, 16.5- IS mm. 

 Diameter, 2.5-2.6 mm. 



