Syncaris pasadenae ( Kingsley, 1897 )

Wicksten, Mary K., 2012, Decapod Crustacea of the Californian and Oregonian Zoogeographic Provinces 3371, Zootaxa 3371, pp. 1-307 : 51

Syncaris pasadenae ( Kingsley, 1897)

( Fig. 11I)

Caridina pasadenae Kingsley, 1897: 98 , pl. 3, figs. 1–7. — Holmes 1900: 214.

Syncaris Trewi Holmes, 1900: 213 .

Syncaris pasadenae . — Hedgpeth 1968: 516. — Holthuis 1993: 63, fig.50. — Martin & Wicksten 2004: 447 (extensive synonymy).

Diagnosis. More robust than S. pacifica . Rostrum without dorsal teeth, bifid at apex, with 3–5 ventral teeth. Carapace with supraorbital, antennal, pterygostomian teeth. Stylocerite longer than first segment of antennular peduncle. Scaphocerite rounded, blade exceeding lateral tooth, not as long as rostrum. Pereopods 1–4 with exopods, epipods. Pereopod 1 with chela, fingers gaping, ending in tufts of setae. Pereopod 2 with carpus longer than chela, fingers of chela ending in tufts of setae. Pereopods 3–5 elongated, with slender dactyls, dactyls with spinules. Merus of third pereopod with 1 spine. Abdominal pleura 1–4 rounded, fifth pleuron with spine or point. Telson tapering to round or truncate apex, with 2 pairs dorsolateral spines, 2 pairs terminal spines. Uropods longer than telson. Total length 32–40 mm.

Color in life. Not reported.

Habitat and depth. Streams of Los Angeles and San Bernardino Counties, especially Los Angeles River drainage; shallow water .

Range. Los Angeles River drainage, streams near San Gabriel and Pasadena , and Warm Creek , San Bernardino County, California. See Hedgpeth (1968) for distribution map. Type locality streams near Pasadena .

Remarks. The last verified collection of this species was in 1933. Despite extensive searching, it has not been found again. The streams in which it lived have undergone extensive habitat destruction, which probably contributed to the extinction of the species.