204 
NORTH AMERICAN NEPTICULIDAE 
Quercus spp., oaks; 
(1) N. ierminella; mine a broadening linear tract, 3.5 mm. wide at the 
end; larva yellow (Fig. 36). 
(2) A', saginella; whitish linear mine with frass in a central line or dis- 
persed (Fig. 9) ; larva green. 
(3) N. latifasciella; serpentine mine; frass at first in a broad line, later 
dispersed and toward the end gathered into a band (Fig. 47); 
larva green. 
(4) N. flovipedella ; linear mine; a short indistinct portion followed by a 
transparent area, then a gradually broadening serpentine track, 
not transparent, but easily visible above (Fig. 48) ; larva green. 
(5) N. anguinella Clemens, Proc. Ent. Soc. Phila., i, 85, 1861; Tin. No. 
Am., 175, 1872. “May be found in the leaves of oaks early in 
October and in the latter part of June. The mine is a very nar- 
row serpentine tract, which is filled or discolored throughout its 
length hy blackish excrement. The larva fits the mine closely, in 
color lemon- 3 'ellow, with ten square dark brown or blackish spots 
on the ventral surface.” 
It should be possible to recognize this species, when found, from 
Clemens’ description of the larva. 
(6) N. platea Clemens, Proc. Ent. Soc. Phila., i, 85, 1861; Tin. No. Am., 
175, 1872. “Mines oaks early in October. The mine is a mod- 
erately broad, winding tract, with a broad line of dispersed grains 
of excrement. The larva is purpEsh, with a pale green vascular 
line and a row of reddish-brown dorsal dashes. The mine is 
much broader than that of the preceding miner.” 
The statement that the larva is purple can not be regarded as conclusive, 
since such color is often produced in larvae feeding on leaves with autumnal 
coloration. 
Quercus alba, White Oak: 
(7) A', quercipulchella ; long, narrow, winding and gradually widening 
track; larva bright green. 
Quercus palustns, Pin Oak: 
(8) A', similella; linear mine expanding into an underside blotch, fol- 
lowed bj" a large conspicuous nearly transparent blotch (Fig. 27); 
larva pale green. 
(9) N . altella; lower side, very long serpentine mine, not distinctly visible 
(Fig. 37); larva yellow with row of dark brown dashes. 
(10) E. heinrichi; flattened oval spiral mine in bark of young branches. 
Quercus agrifolia, California Live Oak: 
(11) A’, variella; serpentine mine. 
Ulrnus spp., elms: 
(1) A', apicialbella; narrow .serpentine mine (Fig. 43). 
(2) N. ulmella; narrow linear track enlarging into an irregular blotch 
(Fig, 45). 
