1965] 
Wheeler and Wheeler — Ant Larvae 
29 
rounded and terminates in a small naked hemispherical boss. With 
a complex structure projecting anteroventrally from the ventral 
surface of the prothorax (see Fig. 4-5). With only one pair of 
spiracles, located on the third abdominal somite near the posterior 
border; each spiracle opening eccentrically on a naked circular area, 
which is bordered by a narrow heavily sclerotized band. Body hairs 
simple. Of three types : ( 1 ) numerous, increasing in length from 
0.005 mm on the thorax to 0.02 mm at the posterior end, without 
alveolus and articular membrane, uniformly distributed but lacking 
from the anterior portion of the prothorax, the circumspiracular area 
and the terminal boss; (2) 0.01-0.15 mm long (shortest on the 
prothorax), few, conspicuous, the longest attenuated and flexible 
distally, with alveolus and articular membrane, absent from the dorsal 
surface of abdominal somites III-IX; (3) about 0.3 mm long, with 
attenuated flexible tip, two (one dorsal and one ventral) on the 
posterior end near the terminal boss. Head naked; elongate; widest 
above the antennal level ; cranium subpyriform in anterior view. 
Antennae small ; slightly raised ; each with two sensilla, each of which 
bears a spinule. Labrum slightly broader than long; the ventral 
border semicircular; posterior surface spinulose, the spinules in long 
rows, the rows concentric with the ventral border. Mandibles with 
the toothed border directed laterally; feebly sclerotized; each with a 
rather long slender sharp-pointed apical tooth, which is curved 
laterally; lateral border with four long slender sharp-pointed teeth; 
a few rows of rather large spinules on the anterior surface. Maxillae 
adnate to the labium; palp a stalked hemispherical knob directed 
laterally and bearing five sensilla; no galea seen. Labium a thin flap, 
narrowed basally; lateral surfaces sclerotized; each palp a low 
ventrolateral projection bearing five sensilla; an isolated sensillum 
between each palp and the opening of the sericteries; the latter a 
transverse impression on the anterior surface. 
Explanation of Plate 2 
Figs. 1-8. Leptanilla revelierei sardoa. 1, head in anterior view, X417; 
2, larva in side view, X76; 3, left mandible in anterior view, X847; 4, 
ventral prothoracic structure in side view, X423 ; 5, ventral prothoracic 
structure: left half in posterior view, right half in anterior view, X423 ; 
6-8, three body hairs, X500. 
Figs. 9-18. Leptanilla swani. 9, head in anterior view, X417 ; 10, larva 
in side view, X76; 11, left mandible in anterior view, X 1333 ; 12, left 
maxilla in anterior view, X847; 13 and 14, two body hairs, X500; 15 and 
16, spiracle and circumspiracular area in side and surface phantom views 
(hairs omitted) X333; 17 and 18, ventral prothoracic structure in anterior 
view and in side view, X667. 
