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 : 221-222

Coelocephalapion nodicorne species-group

Diagnosis. Species of the C. nodicorne species-group differ from other Coelocephalapion species groups by the following combination of characters: vestiture of elytra usually with distinctive spot of denser scales along the sutural interval (postscutellar) and/or on base of interval 3, or median discal spot of darker scales; legs usually pale; sexual dimorphism of rostrum marked; dorsal margin of scrobe produced into an acute dentiform process; antenna with segments comparatively stout; head with large and prominent eyes, frons narrow, as wide or wider than prorostrum; subocular lateral ridges developed and not extending to posterior margin of the eyes; elytral striae at apex joining 1+9, 2, 3+4, 5+6, 7+8 (1+2+ 9 in C. iteratum and C. metum ); interstriae 9 with one specialized seta in apical half, rarely two; median lobe (penis) slender, apex slightly bulbous, in dorsal view sides more or less expanded at base and orifice; penal apodemes moderately short; internal sac with four rows of fine teeth near orifice; tegminal plate produced laterally to membranous union with basal piece, lacking lobes and setae; fenestral sector unmarked, basal median area with more or less distinct low carina ( Kissinger 1968, 2005).

The species of this group are associated with Euphorbiaceae ( Kissinger 2005) .