Family Capillariidae Railliet

1. Caudal alae present in male.............................................................................. 2

- Caudal alae absent in male..............................................................................4

2. Spicule with spiny sheath.............................................................. .. Pterothominx Freitas Species: P. angrense (Freitas, 1934); P. brevidelphis Freitas & Mendonça, 1960 (b)

- Spicule without spiny sheath............................................................................. 3

3. Bursa of male with complex system of symmetrical rays............................ Tenoranema Mas-Coma & Esteban Species: T. rivarolai (Lent, Freitas & Proença, 1946)

- Bursa of male with one or more pairs of rays which may be curved.......................... Aonchotheca López-Neyra Species: A. cubana (Freitas & Lent, 1937); A. magnifica Freitas & Mendonça, 1961; A. parca Freitas & Dobbin Jr., 1961 (a); A. pereirai (Freitas & Lent, 1936); A. pintoi (Freitas, 1934); A. pulchra (Freitas, 1934) 1; Aonchotheca sp.

4 Male with spiny spicular sheath............................................................. Capillaria Zeder 2 Species: Capillaria sp.

- Male with smooth spicular sheath...................................................... Pseudocapillaria Freitas Species: P. pusilla (Travassos, 1914)