Liriomyza pechumani Spencer, new 
species 
(Figs. 635-639) 
Head (fig. 635). Frons only slightly 
wider than eye, conspicuously pro- 
jecting above eye in profile; orbital 
bristles strong, 2 ors, 2 ori, orbital 
setulae reclinate, irregularly in 2 
rows; gena 0.33 height of eye at rear; 
3d antennal segment small, round, 
arista long, drooping, distinctly 
pubescent. 
Mesonotum. 3+1 dc (male) , 2+1 
(female) in only specimens seen, acr 
in some 6 rows in front, intra-alar 
hairs numerous, in 4 rows, intra-alar 
bristle well developed. 
Side of thorax. Mesopleuron and 
sternopleuron both with numerous hairs 
in addition to normal bristle. 
Wing. Length 3 mm in male, 3.25 mm in 
female, discal cell large, last 
section of vein M 3+4 less than 1.5 
times length of penultimate, in ratio 
31:26. 
Abdomen. Thickly covered with 
exceptionally numerous hairs, 
particularly in male, strongest 
laterally and on last tergite, where 
they are almost bristlelike. 
Color. Head entirely yellow; mesonotum 
blackish gray in male, matt black in 
female, dark area divided into 5 
bands, 2 other bands divided from dark 
humeral area, broadly yellow adjoining 
scutellum to level of 2d dc, scutellum 
entirely yellow; pleura entirely yel- 
low, apart from normal black triangle 
on sternopleuron; legs with coxae and 
femora bright yellow, tibiae and tarsi 
darker, yellowish brown; abdomen 
predominantly yellow, darker centrally 
on each tergite, giving appearance of 
dark central line; squama yellow- 
ish gray, margin and fringe black; 
ovipositor sheath shining black; 
halter yellow. 
Male genitalia. Aedeagus as in 
figures 636, 637; sperm pump large, 
with blade becoming unpigmented 
distally (fig. 638); epandrium (fig. 
639) with stout projection at lower 
corner; surstylus ending in long, 
curving projection. 
Host/early stages. Unknown. 
Holotype m., Florida, Collier Co., 
Copeland, 31. III. 69; paratype f., same 
data; (both L. L. Pechuman). Holotype 
and paratype in CUI. 
Remarks. This large, distinctive 
species is shown by the male genitalia 
to be closely related to L. blechi and 
L. roarginalis . Its size suggests that 
it is not a true leaf miner, and the 
larva may well feed in the midrib. 
Liriomyza philadelphivora Spencer 
(new to U.S.A. ) 
(Figs. 663-667) 
Liriomyza philadelphivora Spencer, 
1969a: 182. Holotype male from 
Ontario in CNC. 
The species forming conspicuous white 
blotch mines on Philadelphus was 
recorded as Agromyza melampyga by 
Coquillett (1898: 77) and Frost (1924: 
47). It was described as a new 
species from a series reared from 
Philadelphus at the Biosystematics 
Research Institute, Ottawa. 
L. phi lade lph ivora has the dark areas 
of the mesonotum more shining black 
than in L. melampyga (which is in the 
genus Phytoliriomyza ) but closely 
resembles both L. marginal is feeding 
on various grasses and L. blechi 
feeding on Blechum and possibly other 
hosts (p. 285). 
New records. 
District of Columbia, Washington 
(see Malloch , 1913a: 282). 
New York, Long Island, Babylon, 1 m., 
If., 16 and 17. VII. 36 (Blanton and 
Borders); 1 f., 23. VI. 37 (F. S. 
Blanton); all CUI. 
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