Character Details

Character

Form of axillula relative to scutellum [101]

Description

The axillula in most chalcidoids is a more or less triangular region that forms the lateral surface of the scutellum posterior to each axilla. Because of its position most chalcidoids lack a distinct axillula as seen in dorsal view, though in lateral view it is visible as a more or less vertical region that is often differentiated from the scutellum by a line below the level of the dorsal curvature of the scutellum. State 1 is characteristic of typical Colotrechninae and Sycophaginae (both Pteromalidae), in which the line that differentiates the axillula from the scutellum appears on the dorsal surface because the axillula is enlarged and visible as a dorsal region lateral to the median scutellar region. The axillular grooves are different from, and can co-occur with, the submedian grooves that occur in some Eulophidae (Burks et al., 2011).

States

-: inapplicable (no external indication of axillula)
notes:
coded examples: Smicromorpha doddi Girault, 1913, Chalcis myrifex (Sulzer, 1776), Melanosmicra variventris (Cameron, 1913), Conura immaculata (Cresson, 1865), Conura flavicans Spinola, 1837 (toggle remainder)
0: axillula not enlarged, its dorsal margin straight or not indicated
7198_mximage
1. Polstonia pela...
 
notes:
coded examples: Cleonymus Latreille, 1809, Cales noacki Howard, 1907, Coccophagus rusti, Cirrospilus coachellae, Eurytoma gigantea (toggle remainder)
1: axillula expanded and enlarged, its dorsal margin arched mesad
7197_mximage
1. Colotrechnus ign...
 
notes:
coded examples: Coccobius fulvus, Australomymar sp. Chile, Perilampus tristis, Tanaostigmodes howardii, Anaphes_D2564 (toggle remainder)