ART. 23 FLIES OF THE FAMILY SAPROMYZIDAE MALLOCH H 



4. Palpi and antennae yellow zebroides Hendel. 



Palpi black at apices 5 



5. Antennae entirely yellow ; a brown mark on each cheek. 



octopunctata Wiedemann. 



Basal two autennal segments black, third yellow; no dark mark on cheek, 



but one on each side of labrum below eye picticornis Coquillett. 



6. Face with a round black spot above middle on each side and one in center of 



lower margin ; a blackish spot on each cheek below eye ; basal two antennal 



segments black tripuncticeps Malloch. 



Face with but one black mark, in center of lower margin; no dark mark 

 on cheek ; antennae entirely yellow 7 



7. Thorax with four blackish vittae ; a dark mark about middle of apical section 



of fourth vein octovittata Williston. 



Thorax without dark vittae ; no dark spot near middle of apical section of 

 fourth vein, but one at its apex evittata Malloch. 



8. Face yellow, with a black central mark 9 



Face either entirely yellow or entirely black 10 



9. Forelegs and antennae testaceous yellow ; thorax usually very faintly vittate. 



valida Walker. 



Forelegs black from apical third of femora to apices of tibiae; antennae 



fuscous, base of third segment yellowish ; thorax conspicuously quadri- 



vittate with black on dorsum Sapromyza schwarzi, new species. 



10. Scutellima yellow, with a black spot at base of each apical bristle 11 



Scutellum black or yellowish, without evident black apical spots 14 



11. Wings hyaline ; mesonotum with four large black spots. 



nigripunctata, new species. 

 Wings partly infuscated ; mesonotum without black spots 13 



12. Wing marked almost exactly as in Neotninettia contigua Fabricius, with two 



brown spots on third vein between inner cross vein and apex which are 

 connected with the broad brown costal streak, a con.spicuous cloud over 

 each cross vein, and one on apex of third vein and another on apex of 

 fourth, the two last connected along costa with the costal cloud. 



tucumanensis, new species. 



Wing without evident spots on third vein between inner cross vein and 



apex 12 



13. Wings broadly brown on costal region, the infuscation extending almost to 



third vein up to a point nearly in line with outer cross vein, and over third 

 vein from there to apex, the fourth and fifth veins not narrowly clouded; 

 abdomen with a central black spot on fourth and fifth tergites, and with- 

 out conspicuous lateral apical black marks bipunctata Say. 



W'ings narrowly dark brown along costa from apex of auxiliary vein to apex 

 of fourth, more broadly so on both cross veins, narrowly brown on third 

 and fourth veins from inner cross vein to apices, and on fifth from near 

 base to apex ; abdominal tergites each with a narrow, centrally interrupted, 

 black fascia on apical margin, broadest on sixth tergite, where it forms a 

 large spot on each side, no central black spot present— tinctinervis Malloch, 



14. Thorax black or brownish black; arista long haired 15 



Thorax yellow, sometimes with black spots or vittae; if dark brown the 



arista is only pubescent 16 



15. Thoracic dorsum velvety black and faintly vittate ; scutellum brown on mar- 



gin and slightly shining; abdomen witli white, almost silvery, dust on 

 basal three tergites; only two pairs of dorsocentral bristles on thorax; 

 wings black at extreme bases argentiventris, new species. 



