Ctenocolum
Creators: name: Albuquerque, Felícia Pereira De
name: Manfio, Daiara
name: Ribeiro-Costa, Cibele Stramare
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Chrysomelidae
Ctenocolum

description: Key to the species of Ctenocolum
1. Hind femur with second tooth of pecten regular in profile until apex (Figs. 75–78); hind tibia on outer surface with row of denticles (Figs. 4, 75–78), apex lightly or moderately emarginated beside mucro (Figs. 75–78) (Group tuberculatum)..... 2
- Hind femur with second tooth of pecten gradually increasing in size until middle and decreasing towards apex (Figs. 66–74); hind tibia on outer surface without row of denticles, apex strongly emarginated beside mucro (Figs. 66–74) (Group podagricus)............................................................................................ 5
2 (1). Antennomeres 8–10 darker than the others (Figs. 18, 19, 21, 63, 65); internal sac at apex laterally with short tuft of setae (Figs. 90); tegmen, lateral lobe at apex without membranous projection (Figs. 99–100, 102).............................3
- Antennomeres 8–10 the same color as the others (Figs. 20, 64); internal sac at apex laterally with long tuft of setae (Figs. 5, 89); tegmen at apex of lateral lobe with membranous projection (Fig. 7).................................... C. salvini
3 (2). Hind femur on external ventral margin without toothed carina (Fig. 75)............................ C. acapulcensis
- Hind femur on external ventral margin with toothed carina (Figs. 76, 78)..................................... 4
4 (3). Hind femur with denticles on the external ventral margin (Fig. 76); pygidium of female with sparse setae on two basal “C” pattern areas, on four lateral small areas and on a larger median area (Fig. 51)............................... C. janzeni
- Hind femur without denticles on external ventral margin (Fig. 78); pygidium of female with sparse setae on two lateral areas and on rectangular conspicuous area extending from basal to submedian region (Fig. 52)........... C. tuberculatum
5 (1). Dorsum mostly with yellowish gray setae, forming a “C” pattern on each elytron (Fig. 10); pronotum with sparse setae that exposes the integument and forms a rounded area on anterior region (Fig. 10).............................. C. colburni
- Dorsum never mostly yellowish gray; when mostly yellow gray, not forming a conspicuous pattern on each elytron like a “C” (Figs. 8, 9, 11, 12, 13, 14, 15, 16, 17); pronotum with sparse pubescence exposing the integument forming an oval, wide area from anterior to posterior region, divided or not by transversal and longitudinal strip of denser setae (Figs. 8, 9, 11, 12, 13, 14, 15, 16, 17)................................................................................. 6
6 (5). Elytral striae with deeply impressed punctures (Figs. 15, 16)................................................... 7
- Elytral striae with moderately impressed punctures (Figs. 8, 9, 11, 12, 13, 14, 17)................................ 8
7 (6). Pygidium at median basal region with moderately impressed punctures; tegmen of lateral lobes with “ U” emargination (Fig. 97)................................................... C. punctinotatus Albuquerque & Ribeiro-Costa sp. nov.
- Pygidium at median basal region with deeply impressed punctures; tegmen of lateral lobes with “V” emargination (Fig. 98).......................................................... C. pygospilotos Albuquerque & Ribeiro-Costa sp. nov.
8 (6). Elytral stria 4 with tooth closer to anterior margin of elytra than base of the tooth of stria 3................ C. biolleyi
- Elytral stria 4 with tooth closer to base of tooth of stria 3 than to anterior margin of elytra...................... 9
9 (8). Pronotum with median gibbosity divided by transversal sulcus; antenna pale brown or brown with antennomeres 3–11 darker at apex; male genitalia, internal sac with inverted Y-shape sclerite (Fig. 79)................................................................................................. C. aquilus Albuquerque & Ribeiro-Costa sp. nov.
- Pronotum with median gibbosity not divided by transversal sulcus; antenna brown and dark brown or brown to dark brown, never with antennomeres 3–11 darker at apex; male genitalia, internal sac with different forms of sclerites (Figs. 81–83, 86)................................................................................................ 10
10 (9). Elytra, striae 3 and 4 with conspicuous teeth at base (Fig. 11); male genitalia, internal sac at submedian region with squamous hollow sclerite (Fig. 81)............................................................ C. martiale
- Elytra, striae 3 and 4 with less conspicuous teeth at base (Figs. 13, 14, 17); male genitalia, internal sac with different form of sclerite (Figs. 82, 83, 86)........................................................................... 11
11(10). Ocular index 4.7–7.0 (Figs. 26, 27); pygidium oval in male (Figs. 38, 39) and triangular in females (Figs. 49, 50)..... 12
- Ocular index 4.5 (Fig. 30); pygidium oval in male (Fig. 42) and female.................................................................................................... C. triangulatus Albuquerque & Ribeiro- Costa sp. nov.
12(11). Male genitalia, lateral lobes of tegmen with internal margin near end of emargination forming a "U" (Fig. 95).................................................................................................. C. podagricus
- Male genitalia, lateral lobes of tegmen with internal margin near end of emargination forming a “V” (Fig. 94)................................................................... C. milelo Albuquerque & Ribeiro-Costa sp. nov.
description: Published as part of Albuquerque, Felícia Pereira De, Manfio, Daiara & Ribeiro-Costa, Cibele Stramare, 2014, A contribution to the knowledge of New World Bruchinae (Coleoptera, Chrysomelidae): taxonomic revision of Ctenocolum Kingsolver & Whitehead, with description of five new species, pp. 1-45 in Zootaxa 3838 (1) on pages 16-17, DOI: 10.11646/zootaxa.3838.1.1, http://zenodo.org/record/286727