Tur CRANE-FLIES or NEw YorK — Part II 1009 
reduced in size, the median pair represented only by two blunt brown tubercles; eighth 
segment with the usual six strong ventral and lateral lobes. Female ovipositor with valves 
small; sternal valves short and broad, much shorter than tergal valves. 
N epionotype.— Stanford University, California, April 15, 1915. 
Neanotype.— With type, bred April 15, 1915. 
Paratypes— Numerous larvae and pupae with type. 
Tipula trivittata Say 
1823 Tipula trivittata Say. Journ. Acad. Nat. Sci. Phila., vol. 3, p. 26. 
The larvae and the pupae of Tipula trivittata live beneath the bark of 
much-decayed prostrate trunks or under the layers of moss that often 
cover fallen trees. Abundant larvae were found on March 22, 1918, and 
were placed in rearing, adults emerging on April 26. On April 16, 1914, 
larvae of two distinct sizes—some very small and some nearly fully grown 
—occurred in abundance beneath moss (Hntodon seductrix [Hedw.] C. 
Muell., Brachythecium acuminatum [Hedw.] Kindb., Hypnum Haldan- 
zanum Grev., and Mnium sylvaticum Lindb.) on prostrate decaying elms, 
sycamores, and other trees, at Renwick Park, Ithaca, New York. 
The adult flies are among the commonest of the eastern species of 
Tipula, and fly during a large part of the season. 
Larva.— Length, 24-25 mm. 
Diameter, 2.7—3 mm. 
Coloration pale brownish yellow, a little paler beneath. 
Form moderately elongated, terete. .Pubescence very short or practically lacking. Setae 
on anterior segments strong, on posterior segments shorter. Chaetotaxy as follows: ter- 
gites with a posterior row of six setae, the two middle punctures each with a single seta, 
the two lateral punctures each with two setae; pleurites with a single seta on each ring; 
sternites with two rows of setae, the anterior row consisting of two closely approximated 
groups of two setae each, the posterior row consisting of a single large seta, laterad of which 
is a minute bristle. Spiracular disk (Plate XCV, 529) surrounded by six lobes; lateral pair 
long and slender; dorsal pair a little shorter, slender; ventral lobes blunt; ventral lobes with 
a jet-black mark on inner face; lateral lobes with dark markings represented only by a very 
small linear dash; dorsal lobes with a small black area. Spiracles large, separated by a dis- 
tance a little less than diameter of one. Anal gills indistinctly lobed, four in number, two 
on either side, very blunt and protuberant. 
Head capsule as in genus, the mouth parts almost as in 7. usitata. Mentum broad, with 
seven teeth. Hypopharynx with five teeth, the three middle ones the longest, subequal 
in size. Antenna shorter and stouter than is usual in the genus. ‘ 
Pupa.— Length, 19-20 mm. 
Width, d.-s., 2.56-2.6 mm. 
Depth, d.-v., 2.8-3 mm. 
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