1945] Chrysopidae of Central America 167 
Key to Species of Leucochrysa 
1. Fore wings about 20 mm. long or more 2 
Fore wings about 15 to 17 mm. long 6 
Fore wings about 12 to 13 mm. long, divisory vein usually 
ends on medius before end of cell 7 
2 . Fore wing with a dark streak or umbra behind the rhegma 
dolichocera 
No such streak 3 
3. In fore wing a cell behind third cubital cell is opaque, 
sometimes also opaque above it clara 
No such opaque cell 4 
4. Radial sector much curved and black for a space before 
the stigma Nodita allonenra 
Radial sector only slightly curved and not black toward 
stigma 5 
5. Pronotum plainly longer than broad behind, and tapering 
forwards varia 
Pronotum about as broad behind as long in middle, less taper- 
ing in front pretiosa 
6. Base of radial sector covered by a large dark spot; inner 
gradates not extended basally notha 
Base of divisory cell covered by a black mark; inner gradates 
extended basally erminea 
7. Two spots each side on margin of pronotum, one reddish, 
one nearly black; a reddish spot under each eye; basal joint of 
antennae with reddish stripe above; outer gradates bordered 
duarte 
A marginal line on pronotum; no spot under eye; basal an- 
tennal joint reddish on outer side antic a 
Leucochrysa variata Navas 1913 and L. angradi Navas 1911 
I presume are the same as pretiosa Bks. 1910, at least I do not 
know how to separate them. L. negata Navas 1913 appears to 
be different from any I have seen, although said to be similar 
to variata. L. delicata Navas 1925, 1 think is surely pretiosa. 
Records 
Leucochrysa clara McLachl. 1867 
From Bugaba, Panama and El Volcan Chiriqui, 24 February. 
L. scioptera Navas 1913 is the same species. 
