Talorchestia capensis
K.H. Barnard, 1916 : 216
K.H. Barnard, 1940 : 470
Griffiths, 1974b : 330
Griffiths, 1975 : 171
Hesp & McLachlan, 2000 : 156
New talitrids from South Africa (Amphipoda, Senticaudata, Talitroidea, Talitridae) with notes on their ecology
Lowry, J. K.
Baldanzi, S.
Zootaxa
2016
4144
2
151
174
5WXJS
Dana, 1853
Dana
1853
[151,600,439,466]
Malacostraca
Talitridae
Capeorchestia
Animalia
Amphipoda
12
163
Arthropoda
species
capensis
Talorchestia capensis. ― K.H. Barnard, 1916: 216. ― K.H. Barnard, 1940: 470, fig. 21. ― Griffiths, 1974b: 330. ― Griffiths, 1975: 171. ― Hesp & McLachlan, 2000: 156(ecology). Types. Neotype, male, 10 mm, AM P.88482, Pringle Bay, Western Cape, South Africa( 34° 20'30"S 18°49'24"E), under kelp, dissipative beach, S. Baldanzi, November 2011.
Additional material examined. 2 females, Kleinmond(western cape), South Africa(~ 34°20.474’S 19°2.314’E), underneath kelp dissipative beach, Simone Baldanzi, winter 2010, KLEIL2 Bw; 8 females, Knysna(western cape), South Africa(~ 34°4.317’S 23°0.755’E), underneath kelp dissipative beach, Simone Baldanzi, winter 2010, Kn L1 Cw; 1 female, Pringle Bay, Western Cape, South Africa(~ 34°20.5'S 18°49.4'E), underneath kelp dissipative beach, Simone Baldanzi, winter 2010, PRINGL1 Cw; 1 male (immature), AM P.88472, 1 female(ovigerous) AM P.97674, Port Nolloth, Northern Cape, South Africa( 29°15'S 16°52'E), underneath kelp and macroalgae on dissipative beach, S. Baldanzi, November 2010; 1 male, AM P.99076, 3 males, 6 females, AM P.98284, Port Nolloth, Northern Cape, South Africa( 29°15'S 16°52'E), underneath kelp and macroalgae on dissipative beach, S. Baldanzi, November 2010; 5 males, Franskraal( Western Cape) (one larger than others), winter 2010, FS L2C. 3 specimens, AM P.88475 Yzerfontein, Western Cape, South Africa( 33°21'26"S 18°09'15"E), under kelp, dissipative beach, S. Baldanzi, December 2010; 10+ specimens, AM P.88476, Hondeklibaai, Northern Cape, South Africa( 30°18'52"S 17°16'30"E), S. Baldanzi, 2010; 21 specimens, AM P.88477, Pringle Bay, Western Cape, South Africa( 34°20'30"S 18°49'24"E), S. Baldanzi, November 2011; 8 specimens, AM P.88474, Knysna, Western Cape, South Africa( 34°04'19"S 23°00'45"E), under macroalgae, dissipative beach, S. Baldanzi, February, 2011; 2 specimens, AM P.88471, Kleinmond, Western Cape, South Africa( 34°20'28"S 19°2'19"E), under kelp, dissipative beach, S. Baldanzi, November 2011; 5 males, AM P.88470 [possibly take gnathopods of smallest male for SEM], 2 females, AM P.88483, Franskraal, Western Cape, South Africa( 34°36'15"S 19°24'12"E), under kelp, dissipative beach, S. Baldanzi, February, 2011. Typelocality. Pringle Bay, Western Cape, South Africa( 34° 20'30"S 18°49'24"E) underneath kelp, dissipative beach.
Description.Based on neotype, male, 10 mm, AM P.88482. Headwith seven groups of short, slender scales along ventroproximal surface (short scales). Eyespresent. Antenna 1short, not longer than peduncular article 4 of antenna 2. Antenna 2less than half body length; peduncular articles slender, without marginal row of robust setae, with sparse, small robust setae; article 5 longer than article 4; flagellar articles final article minute, not cone-shaped, virgula divinaabsent, flagellar articles without apical cluster of serrate setae. Labrumupper lip with apical setal patch; epistome with a few robust setae (in one distal row), with many pores. Labiumdistolateral setal tuft absent; distomedial setal tuft present. Mandibleleft lacinia mobilis 4- cuspidate. Maxilla 1with small palp, 2-articulate. Maxillipedpalp article 2 distomedial lobe well developed; article 4 fused with article 3. Pereon. Gnathopod 1sexually dimorphic; parachelate; coxa smaller than coxa 2; posterior margin of propodus with lobe covered in palmate setae, palmate lobes in male only; carpus longer than propodus, 1.8 × as long as propodus, 2.5 × as long as broad; propodus subrectangular, anterior margin with 5 groups of about 15 short robust setae, propodus 1.5 × as long as broad, palm transverse, with 18 short robust setae in two patches, without spine patch on posterodistal corner; dactylus longer than palm, simplidactylate, without anterodistal denticular patch. Gnathopod 2sexually dimorphic; subchelate; posterior margin of merus, carpus and propodus each without lobe covered in palmate setae; basis slightly expanded; ischium without lobe on anterior margin, with distally rounded anterodistal lobe on medial surface; carpus triangular, reduced (enclosed by merus and propodus), posterior lobe absent, not projecting between merus and propodus; propodus 1.3 × as long as wide, palm extremely acute, reaching between 44% along posterior margin, smooth, with rounded protuberance near dactylar hinge, not lined with robust setae, deeply excavate, posterodistal corner defined by large thumb, posteromedial surface without groove, without cuticular patch at corner of palm; dactylus subequal in length to palm, sinusoidal, without anteroproximal bump, posterior margin smooth, with shallow posterodistal sinus. Pereopods 2–4coxae deeper than wide. Pereopods 3–7cuspidactylate, dactyli without anterodistal patch of many rows of tiny setae. Pereopod 4dactylus thickened proximally with a notch midway along posterior margin (granular surface). Pereopod 5propodus slightly shorter than carpus; dactylus without anterodistal setal patch (small tripod spines lateral to cuspidactylate spines). Pereopods 6–7not sexually dimorphic; merus, carpus, propodus with many strong robust setae. Pereopod 6posterior lobe with about 40 marginal slender setae. Pereopod 7basis lateral sulcus present, slightly pronounced, posterior margin with numerous small robust setae, posterodistal lobe produced downwards almost to merus, shallow, broadly rounded; merus posterior margin expanded distally, subtriangular; propodus setation without large distal tuft of setae. Pleon. Pleopodsall well developed. Pleopods 1–3biramous. Epimeron 2longer than epimeron 3, posterior margin minutely serrate. Epimeron 3posterior margin minutely serrate, with about 9 setae, posteroventral corner rounded. Uropod 1peduncle 14 slender setae, tiny distolateral robust seta with simple tip; inner ramus spatulate, subequal in length to outer ramus, with 5 lateral and 6 medial marginal robust setae in 2 rows; outer ramus with 4 marginal robust setae in one row. Uropod 2peduncle with 4 robust setae; inner ramus subequal in length to outer ramus, with 4 lateral and 4 medial marginal robust setae in 2 rows; outer ramus with 5 marginal robust setae in 1 row. Uropod 3peduncle with 7–8 robust setae; ramus partially fused to peduncle, ramus longer than or subequal in length to peduncle, ramus 2 to 3 × as long as broad, linear (narrowing) or spatula-like, with 10 marginal setae, with than 6+ apical setae. Telsonbroader than long, rounded distally, apically incised, dorsal midline entire, with marginal and apical robust setae, at least 12–16 robust setae per lobe. Female (sexually dimorphic characters ). Gnathopod 1simple; posterior margin of merus, carpus and propodus each without lobe covered in palmate setae; carpus 1.9 × as long as propodus, 2.4 × as long as broad; propodus subrectangular, tapering slightly distally, anterior margin with 4 groups of 15 robust setae, propodus 2 × as long as broad. Gnathopod 2chelate; basis expanded anteroproximally; without anterodistal lobe on medial surface; carpus well developed (not enclosed by merus and propodus), posterior lobe present, projecting between merus and propodus; propodus palm obtuse, nearly straight, lined with serrate setae; dactylus slightly shorter than palm, curved.
Distribution. South Africa. Lamberts Bay ( K.H. Barnard 1916), Kommetje ( K.H. Barnard 1916), Capeof Good Hope ( K.H. Barnard 1916); Keurbooms River, Plettenberg Bay ( K.H. Barnard 1940); Knysna ( Griffiths 1974b); Port Beaufort and Moddergat, Breede River Estuary ( Griffiths 1974b); Port St Johns, Umzimvubu River mouth ( Griffiths 1974b).
1288100515
2011-11
S. Baldanzi
South Africa
-34.341667
Pringle Bay
19
18.823334
12
163
2
Western Cape
neotype
1288100503
KLEI
Simone Baldanzi & Bw
South Africa
-34.341232
Kleinmond
1
19.038567
12
163
2
2
1288100522
Simone Baldanzi & Kn L & Cw
South Africa
-34.07195
Knysna
1
23.012583
12
163
8
8
1288100509
PRING
Simone Baldanzi & Cw
South Africa
-34.341667
Pringle Bay
119
18.823334
12
163
1
1
Western Cape
1288100500
2010-11
S. Baldanzi
South Africa
-29.25
Port Nolloth
1228
16.866667
12
163
1
1
Northern Cape
1288100519
2010-11
S. Baldanzi
South Africa
-29.25
Port Nolloth
1228
16.866667
12
163
6
6
Northern Cape
1288100505
South Africa
Franskraal
12
163
5
5
Western Cape
1288100514
2010-12
S. Baldanzi
South Africa
-33.35722
Yzerfontein
20
18.154167
12
163
3
Western Cape
1288100512
S. Baldanzi
South Africa
-30.314444
Hondeklibaai
20
17.275
12
163
1
Northern Cape
1288100513
2011-11
S. Baldanzi
South Africa
-34.341667
Pringle Bay
19
18.823334
12
163
21
Western Cape
1288100501
S. Baldanzi & February
South Africa
-34.071945
Knysna
19
23.0125
12
163
8
Western Cape
1288100518
2011-11
S. Baldanzi
South Africa
-34.34111
Kleinmond
19
19.03861
12
163
2
Western Cape
1288100516
S. Baldanzi & February
South Africa
-34.604164
Franskraal
19
19.403334
12
163
2
2
Western Cape
1288100521
South Africa
-34.341667
Pringle Bay
19
18.823334
12
163
1
Western Cape
holotype