Fig. 4 in A taxonomic review of Sturmiopsis Townsend, 1916, an Old World genus of Tachinidae (Diptera) parasitising economically significant lepidopterous stem borers

Fig. 4. Sturmiopsis parasitica; frontal view of antennae, showing relatively elongate second segment, and pubescent third aristal segment, which is swollen in about basal one­third. Note vestiture on adjacent parafacials and setae restricted to lower half of facial ridges. [SEM micrograph; scale as indicated].