Stictococcus formicarius

Adult female body broadly oval to rotund, 1.5–3.0 mm long, 1.1–2.5 mm wide, membranous at first, mature specimens heavily sclerotized. Dorsal surface with a series of marginal barbed setae about 135 µm long, usually with several prongs at apex; longest posterior marginal setae on apparent anal lobe area about 124 µm long, other posterior setae about 100 µm long. Flower-shaped setae expanding distally, with 3 to 4 points, about 20 µm wide, in marginal and submarginal areas. Submedial setae 22–60 µm long, medial setae about 70 µm long, flattened distally. Marginal enlarged setae bullet shaped, 31–42 µm long, 12–15 µm wide at setal base, not expanding distally and not lobulate. Other ventral setae short, almost spine-like, 18–27 µm long. Legs well developed; hind trochanter + femur 165–204 µm long, hind tibia + tarsus 157–204 µm long; ratio of lengths of hind tibia + tarsus to trochanter + femur 1.00–1.08. Ventral surface with small quinquelocular pores about 5 µm in diameter, almost encircling vulva then curving posteriorly to midline in a double to triple row extending to apex of abdomen. Thick-rimmed oval bilocular pores, each about 7 µm long, 6 µm wide, or sometimes replaced by round trilocular pores, 6 µm in diameter.

Literature