278 NEW YORK STATE MUSEUM 



fore metatarsus about 0.6 as long as its tibia. Wings hyaline, 

 veins yellow, rather distinct, the anterior veins quite stout (pl.30, 

 fig.9). Halteres pale. One specimen, Ithaca N. Y. 



At first I considered this specimen the male of a new genus 

 owing to the peculiar clasper-like appendages of the extremity 

 of the abdomen; but the robust form of the abdomen, the form 

 of the genital lobes, and the antennae, lead me to believe that 

 the specimen is a female. 



s 



13. Orthocladius claripeimis Lundbeck 



1898 Chironomus Lundb. Vidensk. Meddel. p.281, 66 

 1902 Orthocladius Kertesz. Cat'l. Dipt 1 : 217 



Resembles O . m i n u t u s Zett., but its smaller size, the 

 position of the fork of the cubitus, and the shortness of R , dis- 

 tinguishes it. 



Male. Thorax fuscous black, with three indistinct black stripes 

 (at least in dried specimens) ; scutellum brown. Abdomen more 

 or less pale fuscous, with yellow pile. The antennae reddish 

 brown; the palpi yellow. Legs slender, yellow, the tibiae black- 

 ish brown at the tip. The halteres white ; the wings hyaline and 

 the anal lobe moderately produced, obtuse-angled, the veins slen- 

 der and pale; R 44 . 5 is short, and enters the margin of the wing 

 far proximad of the tip of 0%; the media is almost straight, 

 and runs into the tip of the wing; the fork of the cubitus is a 

 little distad of the base of R 4 -f. 5 , its lower branch is almost 

 straight, only at the tip is it curved. The middle and hind legs 

 are pilose ; the fore metatarsus is a little shorter than its tibia. 



Female. Is shorter and paler than the male, thorax yellow, 

 with three brown stripes, the middle one posteriorly, the two 

 lateral ones anteriorly abbreviated, and the scutellum is yellow; 

 in other respects like the male. Length, male and female, 1.25 

 to 2 mm. Greenland. Lundbeck, loc. cit. 



14. Orthocladius minutus Zetterstedt 



1850 Chironomus Zett. Dipt. Scand. 9 : 3522, 39 

 1864 Chironomus Schiner. Fauna Austr. 2 : 609 

 1884 Orthocladius Mik. Wien. Ent Zeitg. 3:202 

 1898 Chironomus Lundb. Vidensk. Meddel. p.281, 65 

 1898 Orthocladius var. plasensis Strobl. Glasnik Zem. Mus. 

 Bosni i Hercegov. 10 : 613 



Black, or blackish brown, somewhat shining, the last abdomi- 

 nal segment wider than the one preceding it; the forceps small. 

 The antennae, including its hairs, brown. Legs yellowish brown, 



