242 MAINE AGRICULTURAL EXPERIMENT STATION. I9IO. 



men. The beak is stout and short extending to the second 

 coxa. The 5-jointed antenna is short, not reaching the abdomen. 

 The eyes are small but prominent as they protrude conspicuous- 

 ly from the sides of the head. The wings are transparent, nar- 

 row and much longer than the body, the venation is practically 

 that of Macrosiphum. It is a green species with the abdomen 

 dotted with darker green. 



The single large collection made by the writer was taken June 

 22, 1909, from rush, Juncus sp., growing in a marsh pool at 

 Orono. Alate and apterous viviparous forms, nymphs and 

 pupae comprised this collection. Figures 198-205 present 

 photo-micrographs and drawings of this species. 



Measurements made from balsam mounts are as follows : — 

 Apterous viviparous form : Total length 2.25 mm.-2.55 ™'^' 

 Antenna I, 0.06 mm.; II, 0.075 mm.; Ill, 0.21 mm.; IV, o.i 

 mm.; V (base) o.ii mm., (spur) o.ii mm. No sensoria except 

 distal ones of IV and V. Fig. 204. 



Winged viviparous form: Total length 1.95 mm. Length 

 of fore wing 2.85 mm. Length of hind wing 1.56 mm. Anten- 

 na I, 0.05 mm.; II, 0.05 mm.; Ill, 0.18 mm.; IV, 0.125 mm.; 

 V (base) o.i mm., (Spur) 0.125 mm. Ill with about 6 large 

 circular sensoria. Distal sensoria on IV and V. The peculiar 

 sensoria on V are well shown in figures 203-203a. 



Antenna of pupa much like that of the apterous form. 

 Fig. 205. 



MINDARUS ABIETINUS Koch. 



The first collection of Mindarus in Maine was a single winged 

 specimen taken at Orono June 16, 1905, from leaves of White 

 Pine (Pinus strohus). This was kindly determined by Mr. 

 Pergande as Mindarus {S chizoneura) pinicola Thos. the follow- 

 ing winter. The next pine collection of this species made by 

 the writer was near Orono June 30, 1909, when a single winged 

 specimen was again taken upon a pine needle. These accord 

 with the description of the winged form by Thomas and also 

 with careful additional notes, measurements, and camera lucida 

 drawings made by Mr. J. J. Davis from the type specimen* and 

 kindly sent me. 



*In the collection of 111. St. Lab. of Nat. Hist., single winged specimen 

 in balsam labeled "Pine Carb(ondale, 111.) April 20, 1878." 



