Coelocephalapion nodicorne (Sharp, 1890)

Sousa, Wesley Oliveira De & Anderson, Robert S., 2022, Two new Brazilian species in the Coelocephalapion nodicorne species-group (Brentidae, Apioninae, Apionini, Oxystomatina) associated with Euphorbiaceae, Zootaxa 5205 (3), pp. 220-230 : 229

Key to species of the Coelocephalapion nodicorne group

1. Elytral sutural interval with postscutellar spot of denser scales.................................................. 2

- Elytral sutural interval without postscutellar spot of denser scales............................................... 7

2. Frons with longitudinal median carina..................................................................... 3

- Frons without longitudinal median carina.......................................... C. buchanani ( Kissinger, 1958)

3. Postscutellar spot of scales starting at a distance equivalent to the length of the scutellum and extending through basal half of elytra............................................................................................... 4

- Postscutellar spot of scales starting just behind scutellum and extending to or beyond basal half of elytra................ 5

4. Prescutellar fovea reaching the middle of pronotum................................... C. saginans ( Kissinger, 1958)

- Prescutellar fovea not reaching the middle of pronotum................................ C. expilator ( Kissinger, 1958)

5. Postscutellar spot of scales extending beyond basal half of elytra, becoming sparse posteriorly..... C. fumitarse ( Fall, 1898)

- Postscutellar spot of scales not extending beyond basal half of elytra............................................. 6

6. Elytral sutural interval with white scales.............................................. C. nodicorne ( Sharp, 1890)

- Elytral sutural interval with off-white to yellowish scales................................ C. iteratum ( Kissinger, 1974)

7. Pronotal disc with prescutellar fovea...................................................................... 8

- Pronotal disc without prescutellar fovea................................................... C. geraldinhoi sp. n.

8. Elytra with discal macula of darker scales............................................. C. metum ( Kissinger, 1974)

- Elytra without discal macula of darker scales............................................................... 9

9. Prescutellar fovea of pronotal disc extended to near its apex............................... C. delta ( Buchanan, 1922)

- Prescutellar fovea of pronotal extended to near the basal half of pronotal disc....................... C. paleariae sp. n.