Studies in Fruit Flies. Part L Dacini — Hardy AND AdACHI 
181 
brown but vary considerably in the intensity 
of the discoloration and are often blackish. 
The black spot on the front femora is often 
present in pedestris but is not a constant char- 
acter. The postscutellum varies from all black 
to rufous in the central portion and is ap- 
parently of no value in distinguishing pedestris. 
The ovipositors of the two species are sim- 
ilar iri shape and general characteristics but 
differ in length. The difference is readily de- 
tected by making measurements or by com- 
parison of slide mounts. In situ the basal seg- 
ment of the ovipositor is slightly longer than 
the fifth abdominal segment in pedestris and 
is approximately three fourths as long as this 
segment in dorsalis. The extended ovipositor 
is approximately 6.0 mm. long in pedestris and 
is 4. 5-4.7 mm. in dorsalis. The piercer meas- 
ures approximately 2.0 mm. in pedestris and 
1.5 mm. in dorsalis. The inversion membrane 
is about 2.35 mm. long in pedestris and 1.7 
mm. in dorsalis. The rasper extends to within 
about 0.88 mm. of the base of the segment 
in pedestris and to within about 0.52 mm. in 
dorsalis. The basal segment of the ovipositor 
is about 1.56-1.7 mm. long by about 1.0 mm. 
wide at the widest point in pedestris. In dorsalis 
the basal segment is 1.3-1.35 by 0.9 mm. The 
other details of the ovipositor are very similar 
in the two species (compare Figures 8^ and 
20^). The more elongate and slender basal 
segment of pedestris is very useful in separating 
these species. 
Length: Body, 7.0-7. 5 mm.; wings, 6.5 mm. 
TYPE LOCALITY: Philippine Islands. No 
specific locality given. 
The type was deposited in the C. F. Baker 
collection. University of the Philippines. A 
specimen is in the U. S. National Museum la- 
beled "Mt. Makiling, Luzon, Baker” and ”72.” 
Numerous specimens are in the collection 
at hand from the following localities and 
hosts: 
Malaya: Balik Pulau, Panang I., Aug., 
.1948, ex methyl eugenol bait trap; Singapore, 
Dec., 1948 to May, 1949, ex Achras sapota 
(R. E. Holttum), Artocarpus polyphema?, Arto- 
carpus dadah, and Psidium guajava (N. L. H. 
Krauss); Serdang, Selangor, Sept., 1948- 
March, 1949, on ”Chiku fruit” (R. J. A. W. 
L.), ex lime ”Limau Rapas,” Achras sapota, 
Nephelium lappaceum, and tomato (N. L. H. 
Krauss); Kwantan, Pahang, Aug., 1948, ex 
Psidium guajava and chilli (N. L. H. Krauss) ; 
Kuala Lumpur, Aug.-Sept., 1948, ex chilli, 
carambola, and Mangifera foetida (N. L. H. 
Krauss); Malacca, Feb., 1949, ex Psidium gua- 
java (N. L. H. Krauss); Serembar, Negri Sem- 
bilan, Feb., 1949, ex Psidium guajava (N. L. 
H. Krauss). 
Philippine Islands: Mintal, Mindanao, Feb.- 
March, 1950, ex cashew, guava, breadfruit, 
carambola, and tomato (F. E. Skinner); Toril, 
Davao Prov., Mindanao, Feb., 1950 (Skin- 
ner); Lawayon, Mindanao, Sept., 1950, ex 
tomato (Skinner) ; Tagoloan, Mindanao, June, 
1950 (Skinner); Los Banos, Laguna, July, 
1930 (F. C. Hadden) and May, 1921 (F. X. 
Williams). 
Borneo: Papar, Feb., 1951, ex mango (F. 
E. Skinner); Tamparuli, Jan., 1951, ex methyl 
eugenol traps (E. E. Skinner), and Buitenzorg, 
Java (F. Muir). 
The following parasites were reared from 
this species: from Malaya— manii Ful- 
laway, 0. incisi Silvestri, and 0. longicaudatus 
malayensis Fullaway; from the Philippine Is- 
lands— 0. skinneri Fullaway. 
Dacus (Strumeta) persignatus 
(Hering), n. comb. 
Strumeta persignata Hering, 1941, Arb. fiber 
Morph, u. Taxonom. Ent. 8(1): 27-28, 
fig. 1. 
This species appears to be very closely re- 
lated to D. cucurhitae Coquillett and is differ- 
entiated by having a very broad costal band 
which extends through all of cell R3 around 
the wing margin to the apex of vein M1+2, 
also by the brown infuscation extending from 
the costal band over the r-m crossvein and by 
the presence of just two pairs of inferior 
fronto-orbital bristles. Hering allies it to D. 
