The Crane-Flies of New York — Part II 987 



The larvae and the pupae of Ctenophora apicata that were described 

 by Johannsen (1910) have been studied by the writer in the collection 

 of the Maine Agricultural Experiment Station. They were collected at 

 Orono, Maine, on June 23, 1909, by Dr. William C. Woods. In 1913 

 the writer examined the stump from which they were taken, and found 

 a few cast pupal skins. 



The notes here given are taken partly from Dr. Johannsen's description 

 and partly from the original material. 



Larva. — Length, about 30 mm. 



Color white. Body stout, cyhndrical. Antemia cylindrical, with an apical paoilla. 

 On dorsum of head behind antennae, a slender, flexible spine. Spiracular disk surrounded 

 by six lobes, dorsal and lateral pairs slender, finger-like; ventral pair blunt. 



Pupa. — Length, 25-27 mm. ^ 



Length of breathing horns, 3 mm. additional. 

 Width, d.-s., 5.2 mm. 

 Depth, d.-v., 5 mm. 



Pupa somewhat similar to that of Tanyptera, differing as follows: Form stout; abdomen 

 a little depressed. Sheaths of maxillary palpi strongly recurved at tips. Pronotal breatliing 

 horns long and slender. Mesonotum with a prominent tuberculate spine on either side of 

 median line. Legs shcrt, ending before tip of third abdominal segment; tarsal sheaths ending 

 about on a level, or those of hind legs a very httle longer. Abdominal segments 5 to 7 with 

 six to eight spines. Female cauda with six powerful ventral spines or tubercles and two 

 dorsal tubercles on either side. Valves of ovipositor short, tergal valves a Httle longer than 

 sternal valves. 



Nepionotype. — Orono, Maine, July, 1909. 



Nennotype. — Orono, Maine, July, 1909. 



Paratypes. — Numerous pupae in collection of Maine Agricultural Experiment Station. 



Genus Dictenidia Brulle (Gr. double + comb) 



1833 Dictenidia Brulle. Ann. Soc. Ent. France, vol. 2, p. 401-402. 



1856 Ceroctena Rond. Dipt. Ital. Prodr., vol. 1, p. 186. 



1863 Dicera Lioy. Atti dell' Institut Veneto, ser. 3, vol. 9, p. 216. 



Dictenidia is a genus of Palaearctic crane-flies including three species, 

 of which one is European and the others are Japanese. The genotype, 

 Dictenidia bimaculata Brulle, is very well known. The immature stages 

 are described or mentioned by Bouche (1834), by Zetterstedt (1851), by 

 Weyenbergh (1872), by Beling (1873 b), by Czizek (1913), and by other 

 investigators. Beling found the larvae in decaying birch (Betula). He 

 describes the larvae as being grayish yellow, with four spiracular lobes. 

 The pupal duration is seven days. Osten Sacken (1886:173-175) states 

 that he has often found larvae in the wet detritus underneath the bark 



