ABT. 6 NOTES ON ORIENTAL SAPROMYZID FLIES MALLOCH 49 



76. Male hypopygium as Figures 71 and 72 ; Formosan species. 



notostigma (Kertesz). 

 Male hypopygium as Figures 73 and 74 ; Javanese species. 



demeijerii, new species. 



77. Frons with an opaque blacli triangular mark between anterior portion of 



each orbital stripe and eye ; only the outer cross vein clouded ; anterior 

 orbital fully half as long as posterior one ; hypopygium as Figure 75. 



bakeri, new species. 

 Frons without anterior triangular black marks; both cross veins slightly 

 clouded ; anterior orbital not fully half as long as posterior one ; hypopy- 

 gium as Figure 76 leucoprosopon (de Meijere). 



78. Thorax largely, or entirely, black or fuscous, never yellow on disk, and 



often densely gray dusted at least in part; apex of scutellum always 

 very distinctly paler than base, generally stramineous, except in toxo- 



peus 79. 



Thorax testaceous or fulvous yellow, the ground color never obscured by 

 grayish dusting ; apex of scutellum not paler than its base 85. 



79. Prescutellar acrostichals microscopic, usually almost indistinguishable ; 



thorax and abdomen shining black, almost devoid of dusting ; humeri 

 yellowish ; apex of scutellum broadly yellowish ; palpi and mid and hind 



femora largely fuscous ornatifrons (de Meijere). 



Prescutellar acrostichals conspicuously developed ; thorax not shining black, 

 with dense grayish or whitisli dusting 80. 



80. Frons, and center of thoracic dorsum, incuding that of scutellum, with 



dense whitish gray dusting, the whole forming a broad pale vitta which 

 is bordered on each side by a narrower dark brown vitta on thorax, be- 

 tween which vittae and the lateral dark margins there is another linear 

 whitish vitta ; pleura gray dusted, with two dark brown vittae ; face 

 fuscous, gray dusted ; palpi and femora almost entirely black ; tibiae and 



tarsi yellow viatrix (de Meijere). 



Frons distinctly bicolored, yellow and black, or gray ; dorsum of thorax 

 not vittate, densely gray dusted all over; pleura not vittate; palpi and 

 femora yellow 81. 



81. Abdomen testaceous yellow, witli black or fuscous markings at apices of 



tergites; legs testaceous, hind tibiae with a dark inc<miplete .subbasal 



band ; outer cross vein narrowly and faintly clouded 82. 



Abdomen dark gray, without spots, the apices of tergites very narrowly 

 yellow; outer cross vein not clouded; face testaceous 84. 



82. Scutellum not pale on margin ; face yellow ; pteropleura and mesopleura 



largely black toxopeus Malloch. 



Scutellum distinctly pale on margin 83. 



83. Face with a gray transverse band or pair of spots near middle ; abdomen 



with a central series of elongate black marks, and on each side a trans- 

 verse black apical mark on each tergite except basal and apical; hy- 

 popygium as Figures 77, 78 ; apex of fifth tarsal segment blackened. 



beckeri (Kertesz). 



Face testaceous ; each abdominal tergite except basal and apical with a 

 complete black apical fascia which is carried forward triangularly at 

 middle ; upper half of occiput yellowish testaceous ; male hypopygium as 

 Figure 79 ; apex of fifth tarsal segment blackened fasciventris Malloch. 



Face with a fuscous mark near middle as in Jjeckeri; abdominal tergites 

 marked as in fasciventris; upper half of occiput with a large fuscous 

 mark on each side; hypopygium as Figure 80; fifth tarsal segment pale. 



occipitalis Malloch 



2609—29 4 



