SPHINGIDAE 293 



The phylogeny is sufficiently simple ; the group of Smerinthus 

 and Dilina is of primitive character, and some exotic members 

 of it closely approach the Notodontidae ; the other genera con- 

 stitute a more largely developed line of descent originating in 

 this group. 



TABULATION OF GENERA. 



1. Abdomen with broad expansible anal tuft . '2. 



without expansible anal tuft . . 3. 



2. Abdomen hairy, wings partly transparent 1. HEMARIS. 



smooth, wings opaque . 2. MACKOGLOSSA. 



3. Posterior tibiae without middle-spurs 6. SMERINTHUS. 



with middle spurs . . 4. 



4. Abdomen conical, pointed . . .5. 



obtuse ... 5. ACHERONTIA. 



5. Antennae thickest near apex . . .6. 



about middle . . 7. DILINA. 



6. Thorax with short double posterior tuft . 4. SPHINX. 



,, smooth . . . .3. DEILEPHILA. 



1. HEMARIS, Dalm. 



Tongue strongly developed. Antennae over J, gradually 

 thickened to near apex, then pointed, apex slender, hooked. 

 Abdomen broad, hairy, with broad truncate expansible anal 

 tuft. Tibiae densely hairy. Wings with disc transparent. 



A moderate genus, distributed throughout the northern 

 hemisphere, but mainly American and Asiatic. Imago day- 

 flying, feeding on the wing ; immediately after emergence the 

 wings are furnished with very fugitive scales. 



Hind wings with a blackish terminal line 1. bombyliformis. 

 ,, dark red-brown terminal fascia 2. fudformis. 



1. H. bombyliformis, Esp. 38-42 mm. Abdomen ochreous- 

 yellowish, apex and a central band blackish. Forewings trans- 

 parent, veins blackish; costa and a basal patch dorsally prolonged 

 to beyond middle blackish mixed with ochreous-yellowish ; a 

 blackish terminal fascia, becoming very narrow towards tornus. 

 Hind wings transparent, veins blackish ; base and a dorsal band 

 blackish mixed with ochreous-yellowish ; a linear blackish 

 terminal border. 



Britain to the Clyde, Aberdeen, Ireland, rather common ; 

 Europe, WC. Asia ; 5, 6. Larva green, yellowish-dotted ; 5-1 2 

 with subdorsal and spiracular series of dark reddish or brown 

 marks; spiracles white; horn reddish: on Scabiosa; 7, 8. 



