Carcinobaena Lacordaire, 1848

Chamorro-Lacayo, Maria & Konstantinov, Alexander, 2009, Synopsis of warty leaf beetle genera of the world (Coleoptera, Chrysomelidae, Cryptocephalinae, Chlamisini), ZooKeys 8 (8), pp. 63-88 : 69-71

Carcinobaena Lacordaire

( Figs. 1 C ; 3 B ; 4 B ; 5 B )

Carcinobaena Lacordaire, 1848: 647 . Type species: Chlamys pilula Klug 1824 , by monotypy; Clavareau, 1913: 210 (catalog); Blackwelder, 1946: 647 (catalog); Monrós, 1952: 515 (detailed morphological study); Seeno and Wilcox, 1982: 43 (catalog).

Diagnosis. Length 4.54-5.36 mm, width 3.63-4.27 mm. General body shape subglobular. Antenna serrate beyond 6 th antennomere, 3 rd, 4 th, and 5 th antennomeres slightly widened, but not dilated distally. Pronotum without median elevation, relatively smooth and continuous with rest of body, without well developed median longitudinal sulci. Pronotal base opposite mesoscutellum (posterior pronotal lobe) with notch. Prosternum broadly narrowing posteriorly, at apex not much narrower than anterior section of prosternum. Narrowest part of prosternal process at about ½ length of entire prosternum. Mesoscutellum transverse, rectangular. Metascutellum concealed by elytra. Sutural serration of elytra poorly developed with individual serra wide, short, and rounded. Elytral tubercules not well developed. Femora and tibiae flattened; tarsi reduced, retractile, able to fit into groove along apex of tibia. Protibial apex with short medially facing spine. Midtibial apices without spine. Tarsal claw simple.

Distribution. The only species, Carcinobaena pilula (Klug) , occurs in French Guiana and northern Brazil ( Monrós, 1952).

Remarks. This genus resembles Melittochlamys in overall body shape; however, the modified legs of Carcinobaena immediately distinguish it not only from other chlamisines, but from most other genera in Chrysomelidae .

Material examined.

Carcinobaena pilula (Klug) :

1) a. Brazil, Para, Santarem: Tanerinha, VII.1921, I. Boy/ b. F. Monrós Collection, 1959/ c. Carcinobaena pilula (Klug) , F. Monrós det. 1949. 2) a. Para, Brazil, de Mathan/ b. F. Monrós Collection, 1959. 3) a. Santarem, Brazil, F. Knab./ b. Carcinobaena pilula Klug / c. Carcinobaena pilula (Klug) , F. Monrós det. 1949.

Figures

Figure 1. Chlamisini, dorsal view. A, Aulacochlamys distincta (Achard). B, A. costicollis (Lacordaire. C, Carcinobaena pilula (Klug). D, Chlamisus foveolatus (Knoch). E, Diplacaspis prosternalis (Schaeffer). F, Exema elliptica Karren. G, Fulcidax coelestina (Lacordaire). H, Hymetes javana Lacordaire. I, Melittochlamys specula (Klug). Į, Neochlamisus insularis (Schaeffer). K, N. velutinus Karren. L, Pseudochlamys megalostomoides Lacordaire ♀.

Figure 3. Chlamisini, ventral view. A, Aulacochlamys costicollis (Lacordaire). B, Carcinobaena pilula (Klug). C, Chlamisus foveolatus (Knoch). D, Diplacaspis prosternalis (Schaeffer). E, Exema elliptica Karren. F, Fulcidax coelestina (Lacordaire). G, Hymetes javana Lacordaire. H, Melittochlamys specula (Klug). I, Neochlamisus insularis (Schaeffer). Į, N. velutinus Karren. K, Pseudochlamys megalostomoides Lacordaire ♁. L, P. megalostomoides ♀.

Figure 4. Chlamisini, frontal view. A, Aulacochlamys costicollis (Lacordaire). B, Carcinobaena pilula (Klug). C, Chlamisus foveolatus (Knoch). D, Diplacaspis prosternalis (Schaeffer). E, Exema elliptica Karren. F, Fulcidax coelestina (Lacordaire). G, Hymetes javana Lacordaire. H, Melittochlamys specula (Klug). I, Neochlamisus insularis (Schaeffer). J, N. velutinus Karren. K, Pseudochlamys megalostomoides Lacordaire ♁. L, P. megalostomoides ♀.

Figure 5. Chlamisini, caudal view. A, Aulacochlamys costicollis (Lacordaire). B, Carcinobaena pilula (Klug). C, Chlamisus foveolatus (Knoch). D, Diplacaspis prosternalis (Schaeffer). E, Exema elliptica Karren. F, Fulcidax coelestina (Lacordaire). G, Hymetes javana Lacordaire. H, Melittochlamys specula (Klug). I, Neochlamisus insularis (Schaeffer). Į, N. velutinus Karren. K, Pseudochlamys megalostomoides Lacordaire ♀.