APHID PESTS 01^ Maine;.. 



175 



and Rs very long and only slightly curved, M is not branched. 

 Young nymphs with 5-jointed antenna and large wax-pore 

 plates on head, thorax and abdomen. Minute oviparous female 

 beakless and with a 5-jointed antenna. Type: Pemphigus 

 affciiuatus Osborn and Sirrine. 



Neoprociphilus attenuatus. This species appears to be more 

 generalized than other known Pemphigina by virtue of the 

 broadly elliptical sensoria of the antenna. 



Fig. 293. Neoprociphilus attenuatus. Antenna of alate viviparous 

 female. 



The ahitc ziviparons female with the antennal joints measur- 

 ing about: I, 0.15 mm; II, 0.22 mm; III, 0.6 mm; IV, 0.5 mm; 

 A', 0.55 mm; VI, 0.68 mm including spur which' extends only 

 about 0.08 mm. Ill, IV, V and VI being approximately sub- 

 equal ; and II subequal to 1-2 III. Ill with about 14 large 

 broadly eliptical sensoria in a row on one side of segment and 

 e>:tending the whole length of segment except basal 1-4; IV 

 with 4 or 5 similar sensoria on distal 2-3 ; V with 4 large sen- 

 soria on distal 1-2. V and VI with dentate imbrication's. Body 

 length about 3 mm and wing expanse about 10 mm. Wings 

 are shown in Fig. 314. 



Fig. 294. N. attenuatus. Antenna of nymph. 



Osborn and Sirrine give brief description of nymphs under 

 caption "Apterous males or larvce(?)" The stout beak extend- 

 ing nearly to tip of abdomen clearly indicates the nymph rather 

 than one of the true sexes. The young nymphs are linear and 

 well supplied with large wax-pore plates on liead, (Fig. 295) 

 thorax and abdomen. They have a 5-jointed antennae. 



