Elytron elevated margin

Flower Chafers
of New South Wales

Elytron - groove adjacent to scutellum

Locating the elytra and scutellum

The elytra are posterior to the pronotum and are the largest visible dorsal sclerites (Fig. 1A). The scutellum is a triangular sclerite posterior to the pronotum, between the bases of the two elytra (Fig. 1B).

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FIGURE 1

FIGURE 2

The scutellar groove is that part of the sutural groove, adjacent to the elytral suture, extended basally along the junction of the elytron and scutellum.

The states are either:

Groove complete, along entire junction with scutellum (Fig, 2A).
Groove absent or incomplete, at most only 2/3 length of scutellum (Fig. 2B).