The Eugoa Walker group of genera
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The Eugoa Walker group of genera

This group of genera is loosely held together by several characters, none of which is seen in all of them. Its validity therefore needs further investigation.

All except Cyclosiella Hampson have female genitalia in some or all species where there is a strong appendix bursae, the bursa itself tending to a rather lateral position, being somewhat spherical and densely spined throughout. Not all Eugoa species have a marked appendix bursae. Both Cyclosiella and Trischalis Hampson have a more flimsy corpus bursae; an appendix bursae is seen in one Trischalis.

Eugoa, Holocraspedon Hampson, Meteugoa Hampson and Malesia van Eecke all have somewhat noctuid-like forewing markings and coloration, the fasciation usually oblique. The forewing cell contains two dark dots; these are close together and rather oblique in Eugoa species where both are retained, but further separated and longitudinally placed in the other three genera.

All forewing veins are present on the cell, but distal branching is restricted to independent bifurcations: (R2, R3) and (R4, R5) in Notata Hampson, Holocraspedon, Meteugoa and Malesia (where these may be stalked together); (R3, R4), (R5, M1) and (M2, M3) in Eugoa, Trischalis and Cyclosiella (Fig 7).

Fig 7a: Cyclosiella dulcicula 

Fig 7b: Eugoa humerana

Fig 7c: Diduga pectinifer

Fig 7d: Diduga trichophora Hampson

Fig 7e: Trischalis absconditana Walker

Fig 7f: Meteugoa ochrivena

Fig 7g: Holocraspedon nigropunctum Hampson

Fig 7h: Notata parva Hampson

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