ART. 6 NOTES ON OEIElSfTAL SAPROMYZID FLIES MALLOCH 29 



2. Thorax with three pairs of dorsocentral bristles 3. 



Thorax with two pairs of dorsocentral bristles 6. 



3. Wings broadly browu on costa from base to apex of third vein ; species 



shining yellow in color, abdomen with a large deep black spot on each side 

 of each tergite; thorax witli four fuscous vittae, the submedian pair ex- 

 tending over the sides of scutellum, the others on notopleural sutures, 

 and a fuscous streak over upper margin of sternopleura ; legs yellow, 

 with the apices of all femora, all of fore tibiae and tarsi, and extreme 



bases of mid and hind tibiae, fuscous conspicna Malloch. 



Wings entirely hyaline; species not marked as above 4. 



4. A deep black mark between base of each antenna and eye ; oeellar bristles 



small; prescutellar acrostichals strong deceptor Malloch. 



No black mark between each antenna and eye 5. 



5. Anterior orbital bristles not much shorter than posterior pair and but little 



closer to them than the latter are to vertical bristles, the inner vertical 

 pair not nearly twice as long as outer pair, ocellars minute; a small 

 fuscous spot over ocelli ; thorax without a conspicuous dark dorsocentral 

 vitta, the prescutellar acrostichals lacking ; abdomen with four black 

 spots on fifth and other four on sixth tergite ; wings glassy. 



hyalipennis (de Meijere). 



Anterior orbitais minute and much closer to posterior pair than latter are 

 to the verticals, inner verticals about twice as long as outer pair, ocellars 

 long: a large obcordate velvety black mark extending from ocelli back- 

 ward over the occiput, the vertex rounded ; thorax with a complete, 

 broad, black, dorsocentral vitta filling area between the dorsocentral 



series ; abdomen largely brown ; wings dull hyaline koshunensis Malloch. 



G. Antennae deep black, apex of third segment fulvous yellow, sharply con- 

 trasting with the basal two-thirds ; hairs ou arista about as long as width 

 of third antenrral segment inversa, new species. 



Antennae either yellow or fuscous, the third segment never distinctly paler 

 at apex than at base, usually the reverse, if largely pale at apex the arista 



is much shorter haired 6a, 



Ca. Longest iiairs on arista never half as long as width of third antennal seg- 

 ment 7, 



Longest hairs on arista at least, as long as width of third antennal seg- 

 ment 10, 



7. Pleura entirely yellow, dorsum of thorax fuscous, with grayish dusting; 

 hairs on arista black, much denser than usual, the longest about half as 

 long as the width of third antennal segment; thorax with a pair of dis- 

 tinct prescutellar acrostichals ; antennae with basal segments, and the 

 extreme base of third segment, black, rest of latter yellow. 



flavopleura Malloch. 



Pleura black or fuscous, concolorous with dorsum of thorax, usually the 

 hairs on arista not dense and not half as long as width of third antennal 



segment 8. 



S. Thorax with a pair of well developed prescutellar acrostichal bristles; 

 head black, frons in front, and base of third antennal segment broadly, 

 bright orange-yellow ; thorax black, with slight brownish dusting ou 

 dorsum fasciatifrons Kertesz. 



Thorax without a trace of prescutellar acrostichal bristles; head and 

 antennae entirely dull yellow ; thorax black, with a broad central stripe 



of yellow dust which extends over disk of scutellum 9, 



9. Tibiae entirely pale pollinifrons Malloch 



Tibiae darkened at bases and apices annnlifera Malloch, 



