1945] 
Echinargus 
193 
A THIRD SPECIES OF ECHINARGUS NABOKOV 
(LYCAENIDAE, LEPIDOPTERA) 
By V. Nabokov 
Museum of Comparative Zoology 
Since discussing the neotropical Plebejinae (Mar -June, 
1945 [publ. 26-X.1945] Psyche 52: 1-61), I have examined 
a male of “ Lycaena ” martha Dognin 1887 (Le Naturaliste 
9: 190, fig. 5) kindly loaned to me by Prof. Wm. T. M. Forbes. 
The species proves to belong to my genus Echinargus and 
structurally is beautifully intermediate between isola and the 
Trinidad species. The specimen is labeled “Huacapistana, 
Rio Tarma, Peru, 1-3-VI-1920, [leg.] T. M. Forbes,” coll. 
Cornell U. 
Measurements (in mm.): aedeagus 0.79, suprazonal portion 
0.3, subzonal 0.49, with breadth (lateral view) 0.1; penis 0.67; 
Vertical 
furca 0.5 ; sagum 0.52 (see description) . extension of 
Horizontal 
uncus; forearm 
0.26 
0.04 
humerulus 
0.06 
0.19 
shoulder 
0.16 
0.08 
lobe 
0.24 
0.07’ 
Valve 0.87,, with breadth 0.39. 
Sagum intermediate between isola and the Trinidad species: 
smaller than in the former, with an “unfilled” portion in the 
ventral margin as in the Trin. sp., and larger than in the latter, 
with the “unfilled” portion much less pronounced and armed 
with teeth as in isola] if measured as in the case of the Trin. sp. 
(l.c.:30) then ZD = 0.52, PD = 0.4, and ZP = 0.45, the jut- 
ting “lower portion” being only 0.16 (i.e. about twice shorter 
than in the Trinidad species) along its “upper” margin, and 
some of the teeth (the medial ones) with which the side ZD 
is set (about a dozen in all) reaching almost 0.1 in length. 
I take this occasion to note that in Pseudothecla faga Dognin 
the rudimentary sagum ( l.c . : 1 1 ) clings to the furca and is 
armed with numerous minute teeth averaging 0.014 in length. 
(A certain roughness suggesting rudimentary teeth is also 
apparent under a X360 magnification in the small sagum lobe of 
Hemiargus hanno). 
