30 
Psyche 
[March 
Material Studied . — Three larvae labeled “Sardegna: Golfo 
Aranci. I. 1909 A. Dodero.” These are the specimens studied by G. 
C. Wheeler (1928). We studied them first with a phase microscope; 
then they were dismounted, stained lightly, remounted and studied 
under both phase and light microscopes. 
Literature. The description and figures by G. C. Wheeler (1928, 
p. 85-87) have been completely revised for this article. Bernard, 
1951, Fig. 949 C, D after G. C. Wheeler, 1928. 
Leptanilla swani Wheeler 
(Fig. 9-18) 
Length about 1.4 mm. Body elongate and very slender; anterior 
end curved ventrally, slightly constricted at the metathorax ; remainder 
of body straight and clavate; diameter increasing gradually to 
abdominal somite VII and diminishing to the posterior end, which is 
round-pointed and terminates in a small naked boss. With a complex 
structure projecting anteroventrally from the ventral surface of the 
prothorax (see Fig. 17-18). With only one pair of spiracles, located 
near the posterior border of abdominal somite III; each spiracle 
opening eccentrically on a naked circular area. Body hairs simple. 
Of two types: (1) abundant and uniformly distributed (except on 
the terminal boss and the circumspiracular area), minute (0.005-0.024 
mm long), longest near the posterior end, without alveolus and 
articular membrane; (2) long (0.084-0.23 mm), slender, with the 
apical portion fine and flexible, with alveolus and articular membrane, 
few, conspicuous, absent from the dorsal surface of the abdomen. 
Head naked; elongate; widest at the level of the antennae; cranium 
subpyriform in anterior view. Antennae small and slightly raised; 
each with two sensilla, each of which bears a spinule. Labrum slightly 
broader than long, with the ventral border semicircular; posterior 
surface spinulose, the spinules rather numerous and long, arranged in 
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 curves laterally; lateral 
border with six long slender sharp-pointed teeth; anterior surface 
spinulose, the spinules numerous, rather long and arranged in rows; 
posterior surface with one row of long spinules. Maxillae adnate to 
the labium; palp an irregular knob projecting 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 slit on the ventral 
border. 
