Iteaphila

Sinclair, Bradley J. & Shamshev, Igor V., 2012, 3561, Zootaxa 3561, pp. 1-61 : 56

Key to species of Iteaphila from the Nearctic Region

1 Acrostichal setulae biserial at apex of scutum, forming only two distinct rows...................................... 2

– Acrostichal setulae at least 4-serial at apex of scutum, sometimes paired row in two more widely separated rows....... 15

2 Anepisternum and anepimeron mostly bare and shining. Male terminalia subrectangular, greatly extended horizontally, longer than final three abdominal segments; epandrium expanded apically ( Fig. 8B)...................... I. nitidula Zetterstedt

– Anepisternum and anepimeron finely pollinose. Male terminalia subtriangular, not extended horizontally, much shorter than final three abdominal segments; epandrium more or less pointed apically ( Figs. 6A, 11C)............................ 3

3 Thorax (incl. scutellum) clothed with pale setae. Abdominal setae also pale......................... I. vetula Melander

– Thorax (incl. scutellum) and usually abdomen covered with dark setae........................................... 4

4 Males (holoptic)...................................................................................... 5

– Females (dichoptic) (Unknown for I. californica , I. cirrata , I. falcata , I. sicamous )................................. 12

5 Oblique hypoproct process absent ( Figs. 4A, B, 11C, 13B)................................................... 6

– Oblique hypoproct process present, from very short to elongate ( Figs. 4D, 6F, 8D)................................ 9

6 Proboscis very long and slender, at least 1.5 times as long as head height........................................ 7

– Proboscis shorter or only slightly longer than head height.................................................... 8

7 Apex of phallus broad, wider than postgonite with apex upturned; hypandrium with tuft of stout black setae ( Fig. 13B)...................................................................................... I. triangula (Coquillett)

– Apex of phallus slender, parallel-sided, subequal in length to postgonite; hypandrium with setae even distributed not concentrated in a tuft ( Fig. 11C).......................................................... I. sicamous Sinclair sp. nov.

8 Epandrium quadrate, apical third tapered with broad rounded apex; hypandrium with short setae, not longer than width of the sclerite ( Fig. 4A)................................................................ I. bulbosa Sinclair sp. nov.

– Epandrium round, apical half strongly narrowed, tapered to slender surstylus; hypandrium with several long setae, longer than width of sclerite ( Fig. 4B)...................................................... I. californica Sinclair sp. nov.

9 Postpedicel short, about 2–2.5 times as long as wide ( Fig. 2B). Proboscis little longer than antennae. Apex of phallus gently curved and rounded tip ( Fig. 8D)...................................................... I. pumila Sinclair sp. nov.

– Postpedicel long, at least 3 times as long as wide. Proboscis longer than antennae. Apex of phallus sickle-shaped and pointed. ................................................................................................... 10

10 Phallus very long and coiled; epandrium with smooth, bare projecting surstylus ( Fig. 4D)...... I. cirrata Shamshev sp. nov.

– Phallus not long and coiled; epandrium without smooth, bare projecting surstylus ( Fig. 6A, 13A)..................... 11

11 Hypoproct process long and slender, projecting free from cercus; epandrium broad, only slightly narrowed posterior ( Fig. 6A)............................................................................... I. falcata Sinclair sp. nov.

– Hypoproct process very short, only slightly projecting free from cercus; epandrium greatly narrowed and cylindrical on posterior half ( Fig. 13A).................................................................... I. testacea Melander

12 Proboscis very long and slender, at least 1.5 times as long as head height. Yellow coloured females with 10 or more than scutellar setae........................................................................... I. triangula (Coquillett)

– Proboscis shorter or only slightly longer than postpedicel. Yellow coloured females with 10 or fewer scutellar bristles.... 13

13 Scutum with dense grey pollinosity when viewed anteriorly or laterally; scutellar bristles brownish not black.................................................................................................. I. bulbosa sp. nov.

– Scutum either yellow or slight grey pollinosity; scutellar bristles black......................................... 14

14 Body often entirely yellow ( Fig. 2E), in dark forms abdomen and legs somewhat paler than thorax and “knees” usually pale. Postpedicel long, at least 3 times as long as wide............................................ I. testacea Melander

– Body dark, including legs and abdomen. Postpedicel short, about 2–2.5 times as long as wide.... I. pumila Sinclair sp. nov.

15 Dorsum of scutum with only minute setae in both sexes; paired rows of acrostichal setulae separated by length of setulae. Male hypoproct process very short, slightly longer than basal width ( Fig. 6F); female wing lacking veins lacking clouding............................................................................................ I. napaea Melander

– Dorsum of scutum with abundant and long setae in male; paired rows of acrostichal setulae separated by one-quarter to onehalf length of setulae. Male hypoproct process long and slender, at least 4 times longer than basal width ( Figs. 6A, 11C); female wing veins with or without clouding.............................................................. 16

16 R 4+5 branched at or distal to end of R 2+3; female wing lacking clouding about veins. Katepisternum with shiny or polished spot on middle.......................................................................... I. orchestris Melander

– R 4+5 branched proximal to end of R 2+3; female wing with clouding about veins ( Fig. 2A). Katepisternum greyish pollinose.................................................................................... I. macquarti Zetterstedt