158 
PACIFIC SCIENCE, Vol. VIII, April, 1954 
Fig. 4. Dacus {Paratridacus) expandens melanius n. 
subsp. Mesonotum. 
the suture, caused by a yellowish vitta which 
extends from this point to the anterior margin 
of the mesonotum. The area just in front of 
the suture, on each side, has a moderately 
large black spot which continues to the hu- 
merus. The inner margin of each of these 
black spots is produced into a vitta which 
extends to the anterior margin of the meso- 
notum at the outer scapular bristle (Fig. 4). 
In other details this subspecies appears to 
conform with the typical expandens. 
Holotype male and allotype female, Singa- 
pore, Malaya, May, 1949, ex fruit of Garcinia 
dtdcis (N. L. H. Krauss); 75 paratypes, 25 
males and 50 females with the following data: 
same as type; Kuala Lumpur, Feb .-Mar., 
1949, ex Garcinia dulcis (N. L. H. Krauss). 
Type, allotype, and a series of paratypes 
deposited in the U. S. National Museum. The 
remainder of the paratypes are being distrib- 
uted to the following collections: British Mu- 
seum, Bernice P. Bishop Museum, Hawaiian 
Sugar Planters’ Association, the University of 
Hawaii. 
Dacus (Strumeta) Walker 
Strumeta Walker, 1856, Linn. Soc. London, 
Proc. 1: 33. 
Dasyneura Saunders, 1841, Ent. Soc. London, 
Trans. 3: 60 (nec Rondani, 1840). 
Chaetodacus Bezzi, 1913, Indian Mus., Mem. 
3: 93. 
Dacus {Marque sadacus) Malloch, 1932, Bernice 
P. Bishop Mus., BuL 98: 145. 
Sinodacus Zia, 1936, Chinese Jour. Zool. 2: 
157. New synonymy. See discussion under 
Dacus {Strumeta) hochii (Zia). 
Dacus {Strumeta) Walker, Hardy, 1951, Pac- 
ific Sci. 5: 142. 
The members of this subgenus are char- 
acterized by one pair each of scutellar, pre- 
scutellar, and anterior supraalar bristles, a row 
of cilia on each side of the third tergum of 
the male, and a supernumerary lobe in the 
wing of the male. 
GENOTYPE: Dacus {Strumeta) umbrosus Fa- 
bricius. 
KEY TO SPECIES AND VARIETIES OF 
Dacus (Strumeta) 
1. Wings with one or more complete cross- 
bands (Figs. 10^ and 22^) 2 
Wings without complete crossbands, 
with not more than infuscations over 
cross veins 3 
2. Wings with 3 complete crossbands and 
a distinct costal band (Fig. 22^) (wide- 
spread through the southwest Pacific) . . 
umbrosus Fabricius 
Wings with one crossband and without 
a distinct costal band (Fig. lOb) (Sol- 
omon Islands, New Britain, Micronesia, 
Malaya) frauenfeldi Schiner 
3. Wings infuscated only on costal margin 
and through cubital area; costal band 
may be enlarged into an apical spot. . . 7 
Wings with brown infuscations over one 
or both cross veins 4 
4. Mesonotum with no postsutural yellow 
vittae. (Malaya) .... tillyardi (Perkins) 
Mesonotum with 3 yellow vittae 5 
5. The r-m crossvein with a distinct brown 
infuscation. Costal band broad and not 
strongly expanded at apex but extending 
