86 
Psyche 
[September 
— CuP+Ai in fore wing- straight or sinuate, the space 
between wider at base than middle; prothorax longer 
than wide 4 
4. Mesepimeral wing process dark umbraceous; 12-16 
branches of CuP+Ai in fore wing macer 
— Mesepimeral wing process yellow; 11 or less, usually 
8-9, branches of CuP+Ai in the fore wing 5 
5. Antennal segments longer than wide; antennae about 
as long as head and thorax together, the pedicel and 
scape black; wings heavily spotted gracile 
— Antennal segments wider than long; antennae shorter 
than head and thorax together, pedicel and scape pale; 
wings only weakly marked 6 
6. Large species (fore wing 80 mm., or longer) ; fore ti- 
bial spurs as long as 2 tarsomeres ; all setae light 
brown . insipidus 
— Smaller species (fore wing 28 mm., or less) ; fore ti- 
bial spurs as long as 3!/2 tarsomeres; most setae on 
legs, and many on thorax, black pollens 
Eremoleon macer (Hagen) 
Figures 21, 30 
Myrmeleon macer Hagen, 1861, Synopsis of N. Amer. 
Neur. :236 
Eremoleon macer Banks, 1901, Trans. Amer. Ent. Soc. 
27:365; 1928, Bull. Mus. Comp. Zool. 68:70; 1938, Car- 
negie Inst. Wash. Pub. 491 :235 
Segura vitreus Navas, 1914, Ent. Zeitung 28:18 
In the Museum of Comparative Zoology there is a pair of 
specimens from Mexico (Apatzingan, Michoacan, 12,000 
feet, Aug. 11- 1941, H. Hoogstral, and Jacala, Hidalgo, 
4,500 feet, June 22, 1939, Ralph Haag) which are quite 
similar to macer in general characteristics, but which have 
more slender wings, with fewer presectoral cross veins in 
the fore wing (7 or 8, but about 10 in macer), and with 
more branches of CuP+A T in the fore wing; the vertex is 
dark pruinose, with two well-defined rows of spots in the 
Jacala specimen. The genitalia are like those of macer. De- 
spite the differences from macer, it does not seam advis- 
able to consider them distinct without more material 
