Atrococcus

Adult female oval in outline, 1025–2600 µm long and 500–1000 µm wide. Membranous, with frequent fine setae, each mainly 10–21 µm long but with some on head up to 27 µm. Cerarii clearly present on abdominal segments VII and VIII, each with two stout spinose setae (stoutest on VIII), length of cerarian setae on VIII 10–18 µm; cerarian setae on segment VI barely differentiated from other setae, possibly sometimes absent. Anal ring 64–70 µm wide, with 6 setae, each about 100–125 µm long. Multilocular disc-pores 6–7 µm wide, present on abdomen. Translucent pores quite abundant on lateral half of each metacoxa, occasionally with a few on femur but usually with some on dorsal half of tibia. Ostioles membranous, each lip with 5–8 trilocular pores and 0–2 small setae. Adult male total body length about 0.80–1.04 mm; antennae slightly more than half total body length, with short, stout fleshy setae; wings hyaline, rather short, 700–900 µm long and 250–325 µm wide, about 0.9x total body length and about 0.36x as wide as long; penial sheath short, broadest anteriorly, sides converging to a fairly narrow, blunt apex, length 79–103 µm, greatest width 76–90 µm.

Literature