152 EEPORT OF THE ENTOMOLOGIST OF 



that he is not aware that the habits of this genus have been before known. 

 He states that the nearly allied Phasia has been found parasite on Pentato 

 mia, which is also a bug, and not greatly removed from the squash bug. 

 Tow end Glover refers to this species in his manuscript notes, p. 57, and 

 gives a rather poor colored drawing, plate IV., fig. 14 Say, edited by 

 Le Conte, Vol. II., p. 364, describes the male. I have reared a male from 

 the squash bug, Anasa tristis. Say gives an admirable description which I 

 should copy were it not that it is too technical for my purpose. He describes 

 the male, which is a little smaller than the female, and has the smoky, 



opaque color on the whole front of the wings. The insect 

 (Fig. 4) is of a dark gray, almost black color, with golden 

 yellow lines on the thorax and between the eyes. The abdo- 

 men is yellow and brown. The front between the eyes has 

 a shining, velvety black line, which is slightly concave on 

 ^ the sides. At the lower outer angles of this line extend 



Trichopoda eI pennipes. black, curved, horn-like lines, which reach down to an 

 imaginary line which would connect the base of the antennas with the lower 

 margin of the eyes. The remainder of the front is creamy white with a satin- 

 like luster. The eyes are large and purple; at the top they reach to the 

 black line, upon which are three ocelli. The antennas are brownish, 

 bordered with black in the male, and black in the female, except the 

 base of the third joint, which is brown. The first joint is short, the 

 second longer and the third still longer and oval. A simple bristle as 

 long as the antenna extends from the outside, near the base, of the third 

 joint. The beak is black, the palpi yellowish. The front part of the 

 thorax is golden yellow, with four black lines extending lengthwise. The 

 two central ones are narrowest — close together, so that they nearly touch 

 in front, where thev reach the anterior border of the thorax. The lateral 

 lines are broader, and are abbreviated in front, so they do not reach the 

 anterior margin. The abdomen is golden at base, becoming brown towards 

 the tip. Osten Sacken says that the abdomen of the female is entirely fer- 

 ruginous. I find that there is often very little difference in the abdomens of the 

 sexes, though usually the male only has the black tip. In some they are brown 

 to the tip, while others are dark at the tip, irrespective of sex. The wings of 

 the male are smoky opaque, except a narrow transparent posterior border. In 

 the female there is a yellowish anterior area reaching from the base of the 

 wing, which is about one-third the width of the wing and two-thirds the 

 length. The poisers are honey yellow, while the base of all the legs, reach- 

 ing beyond the middle of the thighs, is brownish yellow. The remainder of 

 the legs are black, except the pulvilli, which are almost white. The posterior 

 tibia are fringed with scale-like hairs, broader in. the female, where there 

 are about eighteen. There are only about twelve in the male. Thus the 

 name pennipes. The whole insect is hairy. The hairs are either black or 

 white. 



The male is 7 mm. (.3 in.) long, the female 10 mm. (.4 in.). 

 These flies are quite common. If all have the same habit as the ones I 

 raised from the squash bug, we may well wish them even more abundant. 



THE APPLE MAGGOT. — TftYPETA POMONELLA WALSH. 



For the past few years this insect has been a more or less troublesome pest 

 in various portions of Michigan. In 1884 I gave in the Eeport of the State 



