44 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 121 



Zabrachia politum Coquillett, 1901 



Figure 145 



Description. — Mature larva: length 4.3 mm; width 1.0 mm; other 

 characters as given in key to species. 



Biology — No data are available for this species. 



Material examined. — No larvae of this species were examined. 



Zabrachia plicatum Kraft and Cook, 1961 



Figure 142 



Description. — Mature larva: length 4.0-5.0 mm, mean 4.7 mm; 

 width 0.7-1.0 mm, mean 0.5 mm; other characters given in key to 

 species. 



Biology. — Larvae have been collected from beneath the bark of 

 Pinus contorta, P. ponderosa, Picea engelmanni, and Pseudotsuga 

 mucronata. 



Material examined. — North Carolina: Kaleigh, 1941-1942, 9 

 larvae from fallen pine, NCSC. 



Discussion. — In keying out this species, I found it necessary to 

 slide-mount the integument in order to be sure of the number of 

 plaques on segment 6. 



Genus Neopachygaster Austen, 1901 



Kraft and Cook (1961) recognize 4 species in this genus. The 

 larvae have been collected from both coniferous and deciduous trees. 

 Generic characters. —As given in key to genera. 



Key to Species of Neopachygaster Austen 



Kraft and Cook (1961) were unable to differentiate between the 

 larvae of the species in this genus. Because of a lack of material, 

 I am also unable to contribute toward the identification of these 

 species. 



Neopachygaster occidentalis Kraft and Cook, 1961 



Figure 147 



Description. — Larva: length 5.58 mm; width 1.69 mm; tufts of 

 setae of thoracic leg group with 2 inner seate of equal length, outer 

 seta much shorter; otherwise indistinguishable from other larvae of 

 this genus. 



Biology. — Larvae were taken from under bark of Pinus ponderosa. 



Material examined. — No larvae of this species were examined. 



Discussion.— AU data presented for this species are taken directly 

 from Kraft and Cook (1961). 



