Amynthas exiguus austrinus (Gates, 1932)

Pheretima exigua var. austrina Gates, 1932: 514; 1933: 525.

Pheretima exigua austrina— Gates 1972: 184; Le 1995a: 34; Pham 1995c: 92; Thai 2000a: 308; Huynh 2005a: 117; Huynh et al. 2005: 180; Pham 2010: 63.

Pheretima austrina— Gates 1936: 400; 1939: 82.

Pheretima (Terrata) exigua austrina— Thai 1983: 123.

Amynthas exiguus austrinus— Sims & Easton 1972: 235; Blakemore 2007a: 34; Blakemore 2008b.

Type locality. Myanmar (Toungoo: Leiktho Circle).

Type material. Unknown.

Records from Vietnam. Tuyen Quang (Chiem Hoa); Yen B ai (Luc Yen); Lang Son (Binh Gia); Phu Tho (Xuan Son NP); Da Nang; Quang Nam (Tien Phuoc; Tra My); Kon Tum (Dak Glei); Gia Lai (Buon Luoi); Dak Lak (Yok Don) (Le 1995a; Huynh 2005a; Huynh et al. 2005; Pham 1995c, 2010).

Distribution. Vietnam (Le 1995a), Thailand, Myanmar (Gates 1932, 1939, 1972)

Vietnamese name. Giun nhỏ phưƠng nam.

Remarks. Gates (1939) said that the species was probably endemic in the northern part of the Malay penisula.

Thai (1983) proposed a new subgenus Terrata of the genus Pheretima, and placed the species under the new subgenus.