MAY FLIES AND MIDGES OF NEW YORK -- < 



This i)ale green species resembles C. v i r i d i s, but is smaller; 

 the thoracic stripes, the sternum and the inetanotum pale ferru- 

 ginous, sometimes subobsolete; the claspers of the male quite 

 long and slender; the legs pale yellow or white; the femora some- 

 times slightly greenish; the extreme tip of the tibiae and of the 

 metatarsi and the whole of the last tarsal joints brownish. Well- 

 colored specimens, with distinct ferruginous thoracic stripes, have 

 the legs more greenish, and the fore legs brownish. The fore tibia 

 is one third shorter than the femnr and the fore metatarsus nearly 

 twice as long as its tibia; the remaining tarsal joints are much 

 shorter; fore tarsi are bare; the hind legs are hairy. Halteres 

 and wings white. Length 3.5 to 4. ."5 mm. Translation from Y. d. 

 Wulp, Greenland (Lnndbeck) ; Washington State; Long Island. 

 N. Y. 



43. Chironomus modestus Say 



1823 Ohironomus Say. .Journ. Acad. Nat. Sc. Phil. 3:13,3 



1828 Chironomus Wiecl. Aiissoreurop. zweifl. 1:18, 8 



1859 Chironomus Say. COmpI. Wr. 2 : 41, 3 



18TS ChirouoDiUS Ost. Sack. Cat'l. Dipt. N. A. p.21 



Larva. (P1.22, flgs.8 to 12) . The larva is buff -colored or yellow, 

 with a slight reddish tinge ; leng-th 6 to 7 mm. The head is brown 

 with a few dorsal setae; antennae (fig.*>) slender, as long as the 

 mandibles, basal joint three fifths of the whole length. The 

 labrum (fig.lO nlr) with a feAv prominent pale setae, several hairs 

 of which are pectinate. The epipharynx with the usual pectinate 

 setae, lateral arms and transverse comib, the last with but five 

 blunt rounded teeth. Mandibles i lig.ll ) with blackened teeth. 

 Maxillae (fig.ll mx ) with short paljins, several setae and a small 

 grou]) of mesad projecting slender lobes. Labium (fig.ll 1) with 

 rounded margin, the teeth with rounded outline, and a jvair of 

 ventral setae. Posterior prolegs with bilobed claws, anal blood 

 gills distinct; the posterior dorsal tufts of setae are each placed 

 upon a i)apilla wiiich is about as broad as long, and which has a 

 very delicate seta on its side. 



Pupa. Pale green, length 5 to 5.5 mm. Respiratory organs 

 consist of a pair of tufts of white filaments. Dorsal surface of 

 the fourth abdominal segment (fig.l2) marked with two trans- 

 \ersely oval patches of microscopic setae near the anterior mar- 

 gin and a large patch with few clear sjiaces covei-ing the gTeater 

 portion of the dorsum ; this ])at<*h is widest at the ]iosterior mar- 

 gin. The third, fifth and sixth segments are similarly marked, 

 but the patches are smaller on the fifth and sixth, and larger on 

 the third; the seventh and eighth are usually bare; the second 

 has the usual transverse row of longitudinal ridges on its jioste- 

 rior margin, and the dorsal surfaci^ is uuirked like that of the 



