May, 1953 
Reliable characteristics for the specific 
separation of the females of this genus have 
not yet been found. 
10. 
KEY TO SPECIES 
Aputt Ma tes 
Genitalia of the persimplex type, fig. 363: 
penis lobes short, somewhat rounded at 
apexes; discal, posterolateral, and sub- 
apical spines absent....1. persimplex 
Genitalia not of the persimplex type, 
but of the types shown in figs. 364, 
Bos OOSs Oe Ob SUA ive takes ta ee 2 
Genitalia of the e/egantula type, fig. 364: 
each penis lobe semiquadrate, and with 
a prominent, medioapical, hooked spine 
1 u, ot chelates Aaa Cease 2. diabasia 
Genitalia not of the e/egantula type, but 
of the types shown in figs. 365, 368, 
Apo ETO ARE Mb Ne Pes Pehla Bee O 
Genitalia of the pu//a type, fig. 365: penis 
lobes stout, divergent; each lobe bear- 
ing two stout, median spines and a 
minute, posterolateral spine. .3. pulla 
Genitalia not of the pu//a type, but of the 
types shown in figs. 368, 372, or 374. .4 
Genitalia of the flavescens type, figs. 366— 
369: penis lobes relatively long and 
slender, with apexes strongly diverged 
5 od Sic 6 veo Pa ee eee 5 
Genitalia not of the flavescens type, but 
of the types shown in figs. 372 or 374. . 
Abdominal segments white or faintly 
smoky, each tergite with a narrow, 
black, transverse line at posterior mar- 
gin and a pair of oblique, sublateral, 
hlacka linespyne 5.24. 4. marginalis 
Abdominal segments light yellow’ or 
golden tan, tergites shaded on broad, 
median area with red-brown or orange- 
[SSRONAT 3s eS cakes oh Ge cP aC 6 
Median spines of penis lobes slender 
throughout, fies 36/7... ....6 5. patoka 
Median spines of penis lobes broadened 
APADEXES Hes: GOON O09. aoc fas. nee 7 
Basal costal crossveins extremely weak 
or entirely wanting...... 6. flavescens 
Basal costal crossveins well developed, 
Rene oth Bs. Yt Oe ot by 7. cruentata 
Genitalia of the /ucidipennis type, figs. 
370-373: each penis lobe short and 
broad, with a heavy, usually recurved 
lobe at both apical and lateral margins 
and bearing a large, spinulose, mesal 
spine; discal spines sometimes present 
Genitalia of the maculipennis type, figs. 
374-380: each penis lobe relatively 
elongate and narrow, and bearing one 
subapical, one posterolateral, one mesal, 
and always at least one discal spine. .12 
Penis lobes without discal spines, fig. 370 
SAS choke ated ee Ee 8. rusticalis 
Each penis lobe with at least one discal 
SPIES SHES OPIS 8 oo Vocal codes oe 10 
Abdominal tergites uniformly shaded with 
VS: 
16. 
17 
Burks: THE Mayr ties or ILLinors 181 
light orange-brown; fore wing not over 
6imm longs oc 9. inconspicua 
Abdominal tergites shaded with tan, red- 
brown, or dark orange, but with promi- 
nent, light yellow spots or stripes on 
meson of basal and middle tergites; 
fore wing at least 7 mm. long...... 11 
Apex of each penis lobe with a large, 
rounded, projecting lobule, and apical 
margin of forceps base with a pair of 
obscure, sublateral projections, fig. 372 
CO Ee Acre A ne 10. lucidipennis 
Apex of each penis lobe with a broad, re- 
curved lobule, and apical margin of 
forceps base with a pair of conspicuous, 
sublateral projections, fig. 373....... 
SAR TR te AY Bans ee 11. perfida 
Costal and subcostal crossveins stained 
with brown, but this dark staining not 
extending to membrane surrounding 
these crossveins...... 12. umbratica 
Costal and subcostal crossveins dark, and 
with this shading extending to mem- 
brane surrounding these crossveins, 
LORE | hn et) Oe ae OT he Mabe Sele 13 
Discal spines of penis lobes extremely long, 
fig. 375; abdominal tergites usually en- 
tirely dark brown a) eee. 13. hebe 
Discal spines of penis lobes shorter, figs. 
376-380; basal and middle abdominal 
tergites partly or almost entirely white 
SEO ee cee Mie Fay ae eae ee 14 
Basal and middle abdominal tergites en- 
tirely white, without darker markings 
Eire sir cee: eee 14. maculipennis 
Basal and middle abdominal tergites 
white, with posterior margins marked 
with black, or these tergites white or 
yellow, with dark red-brown spots near 
lateralimarcing sae en ee 15 
Basal and middle abdominal tergites 
white, with a narrow, black, transverse 
line at posterior margin of each tergite 
and middle abdominal tergites 
white or yellow, with a pair of large, 
dark brown, triangular marks on each 
tergite at posterolateral angles...... 17 
Thorax dark brown dorsally and on each 
PISULONi ns ek es pte ae ae 15. walshi 
Thorax entirely light yellow or white.... 
EM eet ces yee epee Reset set eA abe ere 16. juno 
Fore femur with a median, reddish streak 
' and a black mark at apex; mesonotum 
shaded with dark brown on meson only 
near anterior margin....17. minerva 
Fore femur with a black mark at apex only; 
mesonotum with a broad, dark brown- 
shaded area on meson which extends 
from anterior to posterior margin... . 
Shy aro habeas A's EN 18. aphrodite 
Marure Nympus 
Each gill borne by seventh abdominal 
segment with a well-developed ventral, 
filamentous tuft; each tarsal claw with 
a large basal tooth, but with ventral 
denticles" absent, fis: $82. .-.. 2.7... 2 
Each gill borne by seventh abdominal 
