50 NOTULAE ENTOMOLOGICAE II, 1922 
Key to the species. 
1 (6) Pronotum at base without a median tubercle. Wings dusky 
at apex. 
2 (5) Legs glabrous. 
3 (4) First antennal joint glabrous in both sexes, its pale annulati- 
ons rather indistinct, not sharply contrasting with and much 
narrower than the darker ones, second joint almost without 
distinct pale annulations. Lateral ledge of posterior pronotal 
lobe percurrent. Elytra in their median part with the brown 
spots conspicuously paler than in the basal and apical parts, 
their apical margin broadly rounded but slightly notched or 
subtruncate at the tip of the apical vein, radial cross-vein 
straight. Apical vein of wings not bordered with fuscous; 
anal lobe reaching a little beyond the cross-vein. Venter 
shallowly punctate. Fore coxae distinctly broader than first 
rostral joint; fore femora scarcely longer than pronotum; hind 
femora slightly passing apex of abdomen. Length 4, 5 —5 mm. 
(Eastern States.) errabunda Say. 
4 (3) First antennal joint in the male rather sparingly but longly 
semierectly pilose, in the female glabrous, its white annula¬ 
tions sharply contrasting with and generally not narrower (but 
often broader) than the black ones, second joint with several 
(5—7) distinct white annulations. Lateral ledge of posterior 
pronotal lobe very short, occupying only the apical third of 
the sides. Elytra in their median part with the brown spots 
not paler than in the basal and apical parts, the apical mar¬ 
gin narrowly rounded, not notched nor subtruncate at the tip 
of the apical vein, radial cross-vein a little curved. Apical 
vein of wings bordered with fuscous; anal lobe not reaching 
the level of the cross-vein. Venter finely punctate. Fore 
coxae as broad as first rostral joint; fore femora as long as 
pronotum and posterior lobe of head united; hind femora rat¬ 
her longly passing apex of abdomen. Length 4, 5 —5 mm. 
(California.) californica Banks. 
5 (2) Legs rather longly erectly pilose. [Many characters unknown 
or uncertain.] Length 7 mm. (Vermont and Vancouver Is¬ 
land.) hirtipes Banks. 
6 (1) Pronotum at base with a compressed median tubercle. Hind 
femora considerably passing apex of abdomen. 
7 (10) Basal tubercle of pronotum low, pale, concolorous with the 
surrounding surface. 
8 (9) Body light brownish-ochraceous with no black markings, but 
with the head, anterior lobe of prothorax, meso-and meta¬ 
pleurae darker. Antennae ($) glabrous. Anterior end of the 
percurrent lateral ledge of the posterior pronotal lobe with a 
short white tooth directed outwards. Scutellar spine long, 
slender, erect with the apex directed a little forward; spine 
of postscutellum much shorter than scutellar spine. Apical 
