Stiletto Flies (Therevidae) - 53 Species, Identification & Facts

Acrosathe pacifica

Identification: The dark brown to black setae on the head and thorax of the male is distinctive. Females are separable, from the otherwise similarly colored Acrosathe vanduzeei , by a dark brown horizontal bar on the frons (Webb 2009). For females, a

Cerocatus hardyi

Identification: Male : Head: Black with silvery-white pile. Antenna: Yellowish; last segment slightly more brownish. Thorax: Segment 1 (scutum) dull grayish-black thinly covered with yellowish-white hair and with 2 gray pile longitudinal stripes, one

Cerocatus pictipennis

Identification: Head: Black with silvery-white pile. Antenna: Yellowish-brown. Thorax: Segment 1 (scutum) black with 2 gray pile longitudinal stripes, one each side of center. Segment 2 (scutellum) black with wide white line across base. Thorax side

Cerocatus rufiventris

Identification: Head: Black with silvery-white pile. Antenna: Yellowish-brown, last segment brown. 1st segment quite short, unusual for Cerocatus. Thorax: Segment 1 (scutum) black with 2 gray pile longitudinal stripes, one each side of center. Segmen

Litolinga tergisa

Identification: Contrary to what many keys mention, this species can have 0-2 pairs of scutellar bristles.

Ozodiceromyia livdahli

Identification: See comments under images, such as: Quoting from Gaimari and Irwin (2000), p. 563: "The small, easily recognized mexicana-group is characterized by an elongated antennal scape and first flagellomere, as well as the slightly elongated,

Tabudamima melanophleba

Identification: "Medium-sized flies (6.8-9.3 mm). Tabudamima differs from lncoxoverpa, Tabuda, Dialineura, and Pallicephala in lacking a dark band extending laterally from the antennal socket to the medial margin of the eyes. It differs from lncoxove

Thereva nobilitata

This fly has a long hairy body with slender legs. The adults are conspicuous with their golden hairs and banded abdomen. The female abdomen in quite pointed. Unless identified by a recognised expert, a photo is required. If the photo doesn't show the

Thereva plebeja

12-14mm. A sturdy-looking fly with a grey and black banded abdomen, particularly so in the female, which is long and conical. The hind femora have two rows of anteroventral bristles (not necessarily neat rows but clearly not one line). The hairs on t