Cylindridia

Prena, J, 2012, Further study of Cylindridia C with descriptions of new species (Coleoptera: Curculionidae: Baridinae), Beiträge Zur Entomologie = Contributions to Entomology 62, pp. 419-426 : 423-424

Key to the known species of Cylindridia

1 Elytron with basal and submedian fasciae of white, squamiform setae; frons above eye with row of erect, squamiform setae; Mexico and Guatemala, mid and high elevations ........... ................................................................................................................... C. andersoni

- Elytron with setae evenly distributed when present, not arranged in fasciae; frons above eye at most with inconspicuous setae; more widely distributed ........................................... 2

2 Integument dark green to cupreous, with strong metallic luster; body glabrous, without discernable setae; Central America, high elevations between 2000–3100 m ................. 3

- Integument rufous to black, without strong metallic luster; body usually with distinct setae ( C. prolixa from North America with microscopic setae); temperate zones of North- and South America, low elevations ...................................................................................... 5

3 Antennal club compact, approximately as long as distal four funicular segments combined; femora dark metallic, tibiae and tarsi red; southern Mexico....................... C. propinqua

- Antennal club more elongate, at least as long as distal five funicular segments combined; legs of uniform color, either dark metallic or reddish; Costa Rica................................. 4

4 Legs red; elytral stria 10 not impressed subdistally; rostrum as long as or longer than pronotum; male without angularly projecting lamellar process ventrad of antennal insertion; female with rostrum weakly curved throughout ................................... C. rubripes

- Legs dark metallic; elytral stria 10 impressed subdistally; rostrum shorter than pronotum; male with angularly projecting lamellar process ventrad of antennal insertion; female with rostrum notably curved in distal one-third .................................................... C. fuscipes

5 Integument black and almost glabrous, setae usually microscopic; North America .......... ....................................................................................................................... C. prolixa

- Integument rufous to dark brown, elytral interstriae always with conspicuous setae; southern South America ............................................................................................................. 6

6 Body slightly more elongate; elytral interstriae with wide, pyriform setae; female rostrum longer and less curved ( Fig. 6); male prosternal spines more evenly curved at base; body of aedeagus longer than basal apodemes ....................................................... C. latisquama

- Body slightly stouter; elytral interstriae with piliform setae; female rostrum shorter and more curved ( Fig. 7); male prosternal spines abruptly bent at base; body of aedeagus shorter than basal apodemes ................................................................................. C. sanguinea