
586 RECORDS OF THE S.A. MUSEUM 
Pronotum brown, Mesonotal praescutum largely destroyed by insect pests, 
the posterior third dark brown, somewhat inore pollinose on the interspaces but 
not distinetly striped; scutum and seutellum dark brown or brownish black; 
mediotergite paling to obscure yellow, pleuvotergite with the anapleurotergite 
brown, the katapleurotergite paler. Pleura ehietly dari brown, including the 
dorsopleural membrane, Talteres wiformly dark brown. Legs with the coxae 
and trochanters brown; femora brown, restrictedly yellow at base; the apex 
somewhat more intensely blackened ; tibiae and trasi brown to dark brown. Wings 
with the ground colour light brown, very vagnely patterned with obscure yellow 
markings, especitlly near the wing base beyond the areulus; at origin of As; along 
cord extending from vein F yirtually 10 {he posterior border at Cu, more distinet 
over the anterior cord; a small spot in base of cell Ry; prearcular eld and cells C 
and Se to the region of the stigma darker brown, the colour thence continued as a 
slightly paler darkening to the wing tip; veins brown, not brightened in the 
yellowed areas. Venation: Sey atrophied; Ses entering & just beyond one-third 
the leneth of Ry +3; Rs very lone, about two and one-half times Ry +43 free tip of 
Scy distinctly preserved but pale; #2) entering Rs,» some distance before fork, 
so J? is subequal in length to Ry 4943; inner ond of cell Ry pointed; Ry 45 
extensively fused with JZ, 42, as in the genus, the fusion subequal to the basal 
section of My 4.0, the second section of the latter a little shorter; m from two to 
four times the basal section of vein Mo and a little shorter than the basal section 
of My; m-cu on My shortly beyond origin; vein 2rd A straight. 
First abdominal tergite brownish black; tergites two to four, inclusive, 
brownish fulyons, the posicrior margin broadly, the lateral borders more narrowly 
blackencd; outer lergites more nuiformly darkened; first sternite dark brown, 
the second fulvous; sneeeeding sternites more brownish fulvous, with dark 
margins; ouler sternites more uniformly blackened, Ovipositor with the valves 
elongate, nearly straight, yellowish horn colour. 
Holotype, @, Torricelli Mountains, altitude 200-1,000 feet, January, 1939 
(Cheesman ), 
T take unusual pleasure in naming this fly for the collector, Miss Lucy 
Evelyu Cheesman, who has anlded so materially to our knowledve of the insect 
farma of many of the Pacifie Islands. The present, fly is quite distinet from the 
two species hitherto made known, including the genotype, Ptilogyna ramacornis 
(Walker), widespread’ and eonunon in eastern Australia, and the smaller 
P. minima Alexander, still known only from Melville Island, off the coast of 
Arnhem Land in the Northern Territory of Australia. The new insect differs 
conspicuously from the genotype in coloration and in the slrurture of the antennae, 
the flagellar segments bearing a sinele short branch in the female sex instead of 
