Brightfield image of "Eurosta solidaginis" showing the hindgut and male terminalia. Note that the specimen has emptied the rectal gland (rec) during the dissection so it is reduced comparing to its original “filled” size. tes=testis, spp=sperm pump, acg=accessory gland, emg=external male genbitalia, ext=”secretory sac”, rec=”rectal gland”, hgu=hind gut.