Caobangia smithi Jones 1974

Caobangia smithi

MATERIAL EXAMINED.—Thailand: [1] Huai Charao, Charao Village, Mae Ramat District, Tak Province (16°58′N, 98°34′E), from Brotia costula siamensis Brot (USNM-M 704237), coll. R. A. M. Brandt, 26 April 1967 (USNM-W 50605, holotype; USNM-W 50606, paratypes) dry material; [2] Salween River at Ban Chao Noi, Mae Hong Son Province (approximately 18°26′N, 97°35′E),3 from Brotia cf. baccata (Gould) (USNM-M 420480a), coll. H. M. Smith, 14 January 1933 (USNM-W 50607, paratypes), dry material; [3] Salween River at Ta Ta Fang [ = Ban Tha Phang], Mae Hong Son Province, (18°04′N, 97°43′E), from Brotia cf. baccata (Gould) (USNM-M 420471), coll. H. M. Smith, 31 January 1933 (USNM-W 50608, paratypes), dry material; [4] Maenam Moei, west of Mae Sot, Mae Sot District, Tak Province (16°42'N, 98°32'E), from Brotia costula siamensis Brot (USNM-M 704238), coll. R. A. M. Brandt, 27 April 1967 (USNM-W 50609, paratypes), dry material; [5] Huai Um Meng [= Huey Um Mong], Ching Mai Province (18°25′N, 98°22′E), from Brotia sp. (USNM-M 420441), coll. H. M. Smith, 30 December 1931, “mountain stream, 800 m altitude” (USNM-W 50610, paratypes), dry material. Burma: [6] Salween River at Ban Mae Hiek (approximately 18°50′N, 97°27′E), from Brotia cf. baccata (Gould) (USNM-M 420467), coll. H. M. Smith, 13 January 1933 (USNM-W 50611, paratypes), dry material; [7] Salween River at Chong Jam (approximately 18°03′N, 97°42′E), from Brotia cf. baccata (Gould) (USNM-M 427278a), coll. H. M. Smith, 15 January 1933, “attached to rocks in swift water” (USNM-W 50612, paratypes), dry material; [8] Pegu,4 from ?Paludomus conica (Gray) (USNM-M 31430) (USNM-W 50613, paratypes), dry material; [9] Pegu, from Brotia gloriosa (Anthony) (USNM-M 43604) (USNM-W 50661, paratypes), dry material.

DESCRIPTION.—All specimens of this species have been dried, and the description is based on setal morphology. Palmate hooks of the first setiger bear from 4 to 10 teeth above the single central fang; both terminal teeth are longer, and usually stouter, than the other teeth; the ventralmost terminal tooth may be longer than the dorsalmost (Figures 9d, 15a,b,h-o). Upper capillary setae of the thoracic region are provided with narrow limbations similar to those of C. billeti (Figure 15c). Lower capillary setae of the same region show typical proximally inflated limbations (Figure 15d). Abdominal capillary setae are typical (Figures 15e,f). The low avicular Tiooks of the transverse rows are also typical (Figure 15h,i,k,n,o). The posterior long-necked avicular hooks are small and similar to those of C. morrisoni (Figure 15g).