epiphallus

plural epiphalli

1. biologyIn some orthopterans, a plate adjacent to the genital complex.

   Hadrotettix and Heliastus lack pale streaks but possess trilobed epiphalli, which led me to look for other characteristics shared with the Hippiscus group.

   1981, Daniel Otte, The North American Grasshoppers: Acrididae: Oedipodinae, page 92

2. biologyIn some dictyopterans, a pair of valves adjacent to the phallus.

   Male genitalia strongly asymmetrical, partially concealed by sternum 9, comprised by basisclerite, paired epiphalli (left with titillator), and hypophallus; hook process (=L3 sclerite after MCKITTRICK 1964) missing (KLASS 1997).

   2006, A.P. Rasnitsyn, History of Insects, page 274

3. biologyIn some gastropods, an enlargement of the vas deferens that continues beyond the apex of the penis.

   In mature Arion the atrium is divided into upper and lower atria, with the oviduct, spermatheca duct and epiphallus opening into the upper atrium.

   2012, A. South, Terrestrial Slugs: Biology, ecology and control, page 110