254 APPLE-MIDGE THE PUPA AND FLY. 



larva? of insects of this kind are long slender footless worms, 

 tapering gradually to a point at the head, the opposite end being 

 blunt. They are of a shining glassy white color, the viscera 

 and alimentary matter contained therein showing more or less 

 distinctly through their semi-transparent skins. They are more 

 than double the length of the pupse. 



The Pupa of this species is 0.12 long, though slightly variahle in its dimen- 

 sions. It is not enclosed in a cocoon, and its surface is somewhat glutinous, 

 causing particles of dirt to adhere to it. It is of an elongated ovate form, 

 pointed at one end and rounded at the other. Its head, thorax and wing and 

 leg cases are black, the abdomen dull pale yellow, some specimens showing a 

 short broad pale dusky baud upon the back, on each segment, and some have 

 a faint dusky stripe on the opposite side, from the leg cases to the tip. The 

 thorax has the same color as the abdomen. The region of the throat is dull 

 yellowish, more or less tinged with dusky. 



The flies when at rest and with their wings folded and laid 

 flat upon their backs have a close resemblance to the Hessian 

 fly in every respect except that their legs are not so long and 

 slender. And they pertain to the same group of insects with 

 that, in the Family Tipulid^ and Order Diptera. They belong, 

 however, to a different genus, named Molobrus by Latreille, 

 which may be recognized by its having five longitudinal veins 

 in its wings, the middle one of which is forked. And the pre- 

 sent species, which appears to be different from those which have 

 hitherto been described, may be named 



The Apple midge, Molobrus Mali. It measures 0.15 in length to the tips 

 of its wings. The head is black, spheroidal, transverse. The thorax is black 

 and smooth, the scutel separated from it by a deep wide fissure. The abdo- 

 men is dusky, almost black, with a bright yellow band at each of the sutures; 

 beneath it is yellow with the middle of each segment occupied by a large square 

 dusky spot; its tip is black, as is also the ovipositor, which is inclined down- 

 ward and is composed of two pubescent linear valves. The legs are about as 

 long as the body and are black as are the antennae also, though of a less deep 

 tint than the head and thorax. The poisers are dusky. The wings are dull 

 hyaline tinged with smoky, and are a fourth longer than the abdomen. In the 

 female the antenna? are half the length of the body and composed of fifteen short 

 cylindric joints half as broad as long, clothed with short bristles which incline 

 towards the tip, the joints very slightly diminishing in diameter outwards and 

 but slightly separated from each other. The two basal joints are thicker and 

 shorter than the following ones, as broad as long, and compacted together, the 

 second and third joints being most widely separated from each other. 



The flies belonging to this genus are all small, like the one we 

 have described, and of black or blackish colors. Most of the 

 larva? which have been noticed have been found in the roots of 



