EUPLECTINI 77 



Key to the Group III Species 

 Here belong six species, unusual for the length of the antennal segments. 



Species known from south of 32 south latitude putzeysi 



(Montevideo, Uruguay) 

 Species known from north of 22 south latitude 2 



2. Third tergite with two short median spines near the apical margin, 



the margin slightly depressed and emarginate between these pro- 

 jections laevis 



(2.0 mm.; Bahia, Brazil) 

 Third tergite not so modified 3 



3. Fourth tergite strongly, longitudinally carinate procerus 



(3.0 mm.; 3000 ft.; Sao Paulo, Brazil) 

 Fourth tergite not so modified 4 



4. Head relatively less transverse, one-third narrower than the pro- 



notum megacephalus 



(2.0 mm.; Matto Grosso, Brazil) 

 Head relatively very transverse, subequal to the pronotum in 



width quadrifoveatus 



(2.4 mm.; Brazil) 

 This key does not include majorinus (Schaufuss), of the Amazon river 

 system, Brazil. 



Group IV 

 Key to Species of First Section 



This key does not include two species, insignis (Schaufuss) and angustatus 

 (Schaufuss), of the first section. 



Second antennal segment quadrate 3 



Second antennal segment ovate 2 



2. Antennal segments IX and X slightly larger than Ylll . sub acuminatus 



(2.0 mm.; Blumenau, Brazil) 

 Antennal segments IX and X very abruptly larger than antennal 



segment VIII ootopunctatus 



(1.8 mm.; Blumenau, Brazil) 



3. Elytra red, rest of body nigropiceus rubripennis 



(2.2 mm. ; Argentina) 

 Coloration of body uniform rufous or ferrugineous 4 



4. Head unusually small, distinctly more than one-fifth narrower than 



the pronotal width reitteri 



(1.9 mm. ; Blumenau, Brazil. Male with anterior femora briefly 

 bicarinate; dorsal stria evanescent before middle of elytra) 

 Head very transverse, not more than one-fifth narrower than the 

 pronotal width 5 



5. Lateral pronotal margins with six teeth crassicornis 



(1.95 mm.; San Esteban, Venezuela. Male with anterior 

 femora briefly carinate; dorsal stria wholly absent) 



