C|^ Canadian ^ntomolngisi 



VOL. XVIII. LONDON, MAY, 1886. No. 5 



MONOGRAPH OF THE LOMATINA OF NORTH AMERICA. 



BY D. W. COQUILLETT, ANAHEIM, CAL. 



The Lomatina may easily be distinguished from the other Bombylidse 

 by the following characters : 



Front very large ; antennae shorter than the head, the third joint at 

 least twice as long as the first, tapering to the tip, or suddenly contracted 

 near its base, the terminal portion styliform ; terminal style minute. Pro- 

 boscis never projecting more than one half its length beyond the hyper- 

 stoma. Front and face when viewed from the side form a gentle curve, 

 never greatly produced at base of antennje. Wings with two submarginal 

 and four posterior cells ; furcation of the second and third veins occurs 

 before; the small cross-vein at a distance of at least twice the length of that 

 cross-vein. All of the tibiae bristly. 



The following table contains all the genera known to occur in North 

 America : 



I. — Third basal cell open 2 



Third basal cell closed, third antennal joint when viewed from the side 

 more than twice as long as wide, gradually tapering from near base 

 to apex, which is blunt and bears a very short, sharp-pointed style ; 



pulvilli present 4. Oncodocera. 



2. — Third antennal joint when viewed from the side, more than twice as 

 long as wide, suddenly contracted near its base, the terminal por- 

 tion styliform ; whole of face pilose 3 



Third antennal joint when viewed from the side, but little longer than 

 wide; upper half of face bare; pulvilli present. . . .1. Eucessia. 



3. — Pulvilli present ; face usually retreating below 3. Aphccbanttis. 



Pulvilli wanting ; face projecting below 2. Leptodiilus. 



Stygia elongata Say does not belong to the Lomatina. 

 Triodites O. S. = Aphcebajitus Lw. At the time of establishing this 

 genus, the Baron Osten Sacken had not seen a specimen of ApJimbantus 



