Figure 1.

Sepsid Males of Some Species Have a Novel Appendage on Their Fourth Abdominal Segment Which Is a Modified Fourth Sternite (“Sternite Brush”)

(A–C) (A) Sternite brush of Themira biloba (highlighted in color). (B) Male Themira superba using the sternite brush to stimulate a female during mating. (C) Sternite diversity across Sepsidae: (i) Dicranosepsis bicolor without sternite modification and brushes in (ii) Microsepsis armillata, (iii) Themira flavicoxa, (iv) Perochaeta dikowi, (v) Themira putris, and (vi) Themira superba.