CYDNIDAE OF THE WESTERN HEMISPHERE — FROESCHNER 459 

 Key to species of subgenus Pangaeus {Homaloporus) 



1. Ventral surface of posterior femur with numerous scattered, small tubercles 



(fig. 154); posterior tibia of male distinctly angulate ventrally near base 



(fig. 153) 2 



Posterior femur not tuberculate ventrally; posterior tibia of male simple, not 

 angled ventrally near base 3 



2. Submargin of head with a double set of setigerous punctures, those on anterior 



third or half giving rise to short pegs, on posterior part giving rise to long 



hairs (fig. 49) setosus, new species (p. 473) 



Submargin of head with four to five setigerous punctures giving rise to long 

 slender hairs (similar to fig. 47) but no pegs. 



tuberculipes, new species (p. 475) 



3. Juga and clypeus with a complete submarginal row of pegs (fig. 33). 



congruus (Uhler) (p. 467) 

 Juga and clypeus without a row of pegs 4 



4. Juga with three or more setigerous punctures submarginally; surface of head 



neither strongly convex nor strongly rugose 5 



Jugum with one submarginal setigerous puncture immediately anterior to eye; 

 dorsum of head strongly convex, usually with strong transverse rugae 

 (fig. 48) rugiceps Horvdth (p. 471) 



5. Subapical impressed line of pronotum with a row of distinct punctures; corium 



not alutaceous punctilinea, new species (p. 470) 



Subapical impressed line of pronotum impunctate; corium distinctly alutaceous. 



bilineatus (Say) (p. 459) 



Pangaeus (Homaloporus) bilineatus (Say) 



Plate figures 104, 220 



Cydnus bilineatus Say, 1825, p. 315. 



Cydnus rugifrons Herrick-Schaeffer, 1839, p. 97, pi. 177, p. 547. 



Cydnus rugifrons "loc. inc." StS,l, 1876, p. 26. 



Cijdnus femoralis Herrick-Schaeffer, 1839, p. 98, pi. 177, p. 548. 



Acthus bilineatus Dallas, 1851, p. 117.— Walker, 1867, p. 150. 



Aethus femoralis Walker, 1867, p. 150. 



Aethus f femoralis Walker, 1868, p. 534. 



Aethus fort is Walker, 1867, p. 151. 



Pangaeus bilineatus St^l, 1876, p. 19.— Uhler, 1877, p. 383; 1886, p. 3.— Distant, 



1880, p. 6.— Lethierry and Severin, 1893, p. 69.— Banks, 1910, p. 100.— 



Van Duzee, 1917, p. 21.— Torre Bueno, 1939, p. 180.— Sailer, 1954, p. 41, 



figs. 1-8. 

 Pangaeus femoralis St&l, 1876, p. 19. 

 Pangaeus rugifrons Uhler, 1877, p. 384; 1886, p. 3.— Lethierry and Severin, 1893, 



p. 70. 

 Pangaeus rufifrons (lapsus) Distant, 1880, p. 7. 

 Pangaeus fortis Distant, 1880, p. 6.— Uhler, 1886, p. 3.— Lethierry and Severin, 



1893, p. 69. 

 Pangaeus ? fortis Uhler, 1877, p. 389. 

 Pangoeus [!] fortis Signoret, 1882, p. 246, pi. 8, fig. 105. 

 Pangoeus [!] uhleri Signoret, 1882, p. 253, pi. 9, fig. 112. 

 Pangoeus [!] bilineatus Signoret, 1882, p. 254, pi. 9, fig. 113. 

 Pangoeus [!] vicinus Signoret, 1882, p. 255. New synonymy. 

 Pangoeus [!] douglasi Signoret, 1882, p. 258, pi. 9, fig. 115. New synonymy. 

 Pangoeus [!] scotti Signoret, 1882, p. 259, pi. 9, fig. 117. New synonymy. 



