270 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



the tip. The third antennal segment bears about eight small sen- 

 soria ; the fourth two and the fifth a single large one near the 

 distal end; sixth with the usual large one near the base of the 

 antennal spur. Wings hyaline and the median vein but a very 

 indistinct single piece. Cornicles small and more or less bell- 

 shaped. The opening rather large for the base. Cauda bluntly 

 angled. 



Measurements: Length of body, 1.48mm.; width. 0.6mm. 

 Length of antennal segments, hi, 0.32 mm.; iv, 0.154 mm.; v, 

 0.176 mm.; vi, 0.154 mm. Length of wing, 2.5 mm.; length of 

 hind tibia, 0.92 mm. ; length of hind tarsus, 0.3 mm. and 0.066 mm. ; 

 length of rostrum, 0.49 mm. 



Food plants : Pinus rigida, P. virginiana. 



Eulachnus Del Guercio. 



E. agilis (Kaltenbach). Lachnus agilis Kaltenbach. 



Mon. der Pflanz., 161, 1843. 



Apterous viviparous female : General color, orange-brown to 

 greenish black ; the color is caused to vary more or less by a 

 grayish pulverulence covering the body. When placed in balsam, 

 four rows of black spots are visible on the body and from each 

 one there arises a long spine-like hair. Antennae light at the base 

 and shading to black at the tip. Antennae long and slender and 

 quite spiny. The third segment is not quite as long as four and 

 five together, segments four and six approximately equal. The 

 rostrum is short, not quite reaching the hind coxae. The cornicles 

 are small with a narrow cone-shaped base. Entire body covered 

 with long spine-like hairs. 



Measurements : Length of body, 2.4 mm. Length of antennal 

 segments, iii, 0.45mm.; iv, 0.24mm.; v, 0.31 mm.; vi, 0.24mm. 

 Total length, 1.4 mm. Length of hind tibia, 1.6 mm. ; hind tarsi, 

 0.12 mm. and .22 mm. 



Alate viviparous female : General color dark green or brown 

 covered with white waxy powder or threads. When mounted in 

 balsam the head and thorax are brownish and the abdomen green- 

 ish brown. Antennae and hind pair of legs black, the tibia of the 

 front pair of legs light-colored except at the ends of the segment. 

 Antennae long and slender and set with long black spine-like hairs. 

 The third segment without sensoria, fourth and fifth with one each. 

 Other characters as in apterous forms. 



Measurements : Length of body, 2 mm. Length of antennal 

 segments, iii, 0.44 mm. ; iv, 0.25 mm. ; v, 0.26 mm. ; vi, 0.19 mm. 

 Total length, 1.3 mm. Length of hind tibia, 1.6 mm. Length of 

 hind tarsus, 0.12 mm. and .22 mm. 



Food plant : Pinus spp. 



