NO. 2136. REVISION OF THE GENUS APHYCUSTIMBERLAKE. 591 



33. Coloration orange yellow or bright sulphur yellow 38. flaw* Howard. 



Coloration pale clay yellow with the sutures of notum lined with blackish. 



39. luteolus, new species. 



MALES. 



1. Antennae short, less pubescent, pedicel longer than first funicle joint . 2. 



Antennae long, thickly pubescent, pedicel shorter than first funicle joint, all 



funicle joints longer than wide. 

 Front and vertex about as wide as long, ocelli in an equilateral triangle, 



tibiae not banded 1. maculipennis, new species. 



Front and vertex wider than long, ocelli in an obtuse-angled triangle, tibiae 



banded 14. melanostomatus, new species. 



2. Wings uniformly ciliated and transparent 6. 



Wings with a band of more transparent cilia at end of stigmal vein. 



Scape rather wide, its lower margin noticeably curved 3. 



Scape narrow, wing with two areas of transparent cilia... 4. lecanii Howard. 



3. Notum orange yellow * 



Notum blackish brown - 5. fusdpennis Howard. 



4. Eyes and front less densely pubescent with short pile 5. 



Eyes and front densely pubescent with long pile, notum bright orange yellow. 



9. johnsoni Howard. 



5. Head and notum dark orange yellow, antennae short, club as long as last four 



funicle joints 7. rileyi, new species. 



Head and sides of mesoscutum paler yellow, antennae long, club no longer than last 

 three funicle joints 8. subfasdatus, new speciea. 



6. Scape narrow and not expanded 



Scape wide and more or less expanded below. 



Front and vertex longer than wide, ocelli in an acute-angled or equilateral 

 triangle *'* 



Front and vertex as wide as long, ocelli in a right-angled triangle, notum 

 black, yellow on sides 19. mayri, new^species. 



7. Ocelli in an acute-angled triangle, front and vertex about twice as long as wide . 13 . 

 Ocelli in an equilateral triangle or nearly so, front and vertex about one-half 



longer again than wide " 



8. Club not paler than funicle, either concolorous or darker 9- 



Club yellow except at base, the preceding funicle joints black. 



12. physokermis, new species. 



9. Cheeks not marked with brown 10 - 



Cheeks with a brown spot, tibiae with brown annuli 40. oregonensis Howard. 



10. Tibiae dotted with brown or black H- 



Tibiae unmarked. 



Dorsum of abdomen almost entirely yellowish 21. rusti, new species. 



Dorsum of abdomen black with whitish margins 41. amoenus Howard. 



11. Coloration deep orange yellow, or with a brownish tinge on notum 12. 



Coloration pale orange yellow, scape black except the base, apex, and a narrow 



line on upper margin 10- cockeretti Howard. 



12. Funicle and club uniformly pale brownish 22. puhinariae Howard. 



' Last two funicle joints yellowish white, rest of funicle and the club brownish. 



15. lounsburyi Howard. 



13. Scape rather narrow, pedicel brown at base only 20. lichstensiae Howard. 



Scape wider, more expanded below, pedicel brown with a longitudinal paler 



streak. . 24 - macutiP 68 Howard. 



