CICADELLINAE: PART 2. NEW WORLD CICADELLINI 189 
Holotype male and one female, Coary, Upper Amazon; and two males and 
one female, Teffé, Upper Amazon, both localities in northeastern Brazil; two 
males and one female, Rio Autaz, Brazil, all specimens in RMS. 
A. alternata, n. sp., differs from all other species of the genus in its color pat- 
tern and in the form of the aedeagus in ventral view. 
Amblyscarta obscura, NEW SPECIES 
FIGURE 153, PAGE 196 
Length of male 12.8 mm, of female 11.8-13.3 mm. Head slightly produced 
for the genus, median length of crown varying from slightly less than to 
slightly greater than one-third interocular width and slightly more than one- 
fifth transocular width. Pronotum with disk sparsely punctate. 
Male pygofer well produced, posterior margin convex except for slight con- 
cavity below apex of dorsal margin, with numerous macrosetae located in 
broad band parallel to posterior and posteroventral margins. Plates extending 
posteriorly approximately as far as apex of pygofer, with multiseriate short 
macrosetae on ventral surface. Style rounded at apex. Aedeagus in lateral 
view of moderate width for the genus, shaft with pair of dorsal processes near 
base; in caudoventral view shaft slightly narrowed anteapically, apex ex- 
panded laterally in short triangular process on each side, apical margin con- 
cave. Female abdominal sternum VII trilobate, with lateral lobes much as in 
accompanying illustration (fig. 142q) of A. pulchra (Fabricius), and the median 
lobe acute at apex. Other structural characters as in A. invenusta, n. sp. 
Color of crown, pronotum, and scutellum, orange to yellow, with median 
conspicuous spot at base and at apex of crown, a narrow transverse arcuate 
impressed marking near and parallel to anterior margin and a wider trans- 
verse band which is variable on posterior half of pronotum, a transverse mark- 
ing on sulcus of scutellum, purplish-black. Forewings dull purple of an in- 
tensity which varies individually, with a transverse broad area approximately 
at midclavus which may be pellucid (type) or not, crossing commissural 
margins of wings at rest, bordered before and behind by darker purple trans- 
verse stripes. Face and venter yellow to orange, legs darker apically. 
Holotype male, Nova Olinda, Rio Purus, Brazil (S. M. Klages), June, 1922 
(CM). Four females, Achinamiza, Peru, January 10, February 12 and August 
27 (AMNH). One male, Purtis River, Brazil (RMS). 
A. obscura, n. sp., is similar in size and form to A. pulchra (Fabricius) from 
which it differs in its lack of a pygofer process, its broader aedeagus in lateral 
aspect, its processes near the base of the aedeagal shaft in the male, and the 
more abruptly acute median lobe of the posterior margin of the female ab- 
dominal sternum VII. The last is similar to that of A. ¢trinotata, n. sp. (fig. 
1487). 
