Linguimaera garitima Krapp-Schickel, 2003
Krapp-Schickel, 2003 : 266
Krapp-Schickel, 2008 : 22
New genera, species and records of Maeridae from Australian Waters: Austromaera, Ceradocus, Glossomaera, Hamimaera, Huonella gen. nov., Linguimaera and Maeraceterus gen. nov. (Crustacea: Amphipoda)
Hughes, Lauren E.
Zootaxa
2016
4115
1
1
81
[151,392,1209,1235]
Malacostraca
Melitidae
Linguimaera
Animalia
Amphipoda
45
46
Arthropoda
species
daveyi
sp. nov.
Typematerial. Holotype, male, 16.5 mm, dissected, 4 slides, SAMAC6498, Reefoff Starvation Bay, Bathurst Channel, Port Davey(GPS) under rocks, 14 March 2003, coll. K.L.Gowlett- Homes. Typelocality. Reefoff Starvation Bay, Bathurst Channel, Port Davey, Tasmania, Australia.
Etymology.Named for marine ecologist Adam Davey and the typelocality port.
Description.Based on holotypemale, 16.5 mm, SAMA C6498. Head. Eyessubovate; lateral cephalic lobe broad, rounded, apically truncate, anteroventral margin with notch/ slit, anteroventral corner rounded. Antenna 1longer than antenna 2; peduncular article 1 shorter than article 2, with 1 robust seta on posterior margin; peduncular article 2 longer than article 3; flagellum articles as long as broad, or broader than long, with 34 articles; accessory flagellum short, significantly less than half length of primary flagellum, with 7 articles. Antenna 2peduncular article 4 longer in length than article 5; flagellum with 15 articles. Mandibleaccessory setal row, well developed with 9 setae; palp well developed, article 1 as long as broad, shorter than article 2; article 2 longer than article 3, with many slender setae; article 3 rectilinear, long, 3.2 × as long as broad, longer than article 1, with 5 apical slender setae. Lower lipinner lobes present, outer lobes ducts without ducts, mandibular lobes apically rounded. Maxilla 1inner plate subquadrate, with 3 apical plumose setae. Pereon. Gnathopod 1coxa anterior margin concave, anteroventral corner produced, acute, posteroventral corner without notch; merus with acute posteroventral corner; carpus twice as long as broad, longer than propodus, length 1.1 × propodus, setae covering medial surface; propodus rectilinear, medial surface setal comb absent; palm subacute, straight, entire, lined with robust setae, defined by posterodistal corner; dactylus closing along palm. FIGURE 35. Linguimaera daveyi sp. nov., holotype male, habitus 16.5 mm, SAMA C6498, Port Davey, Tasmania. FIGURE 36. Linguimaera daveyi sp. nov., holotype male, 16.5 mm, SAMA C6498, Port Davey, Tasmania, scales 0.1 mm. Gnathopod 2asymmetrical; larger gnathopod, chelate; coxa posteroventral corner without notch; basis slender, anterodistal corner subquadrate; merus with acute posteroventral corner; carpus compressed, length subequal to width; propodusmassive, rectilinear, length 2.1 × width, anterior margin with rows of short slender setae, posterior margin with few slender setae, palm angle obtuse, margin undulating, lined with robust setae, posterodistal corner defined by tooth;dactylus closing along and reaching end of palm, posterior margin lined with setules, apically acute, unguis not defined. Gnathopod 2smaller gnathopod subchelate; coxa posteroventral corner without notch; basis slender, anterodistal corner subquadrate; merus with subquadrate posteroventral corner; carpus compressed; propodus rectilinear, palm angle subacute, margin straight, lined with robust setae, defined by posteroventral corner with 2 large robust setae; dactylus closing along and reaching end of palm, posterior margin lined with setules, unguis present. Pereopods 5–7slender distally; basis posterior margin straight, weakly serrate, without long slender setae; merus and carpus not broadened; dactylus unguis simple. Pleon. Pleonites 1–3dorsally smooth. Epimera 1–3posteroventral corner with notch, posterior margin with two distal serrations. Urosomites 1–3without carina. Uropod 1peduncle with 1 basofacial seta, length 1.2 × outer ramus. Uropod 2peduncle length 1.2 × outer ramus, rami subequal in length. Uropod 3ramisubequal in length, much longer than peduncle, length 3.8 × width,distally truncated, with lateral and apical long and short robust setae. Telsondeeply cleft, length 1.2 × width, lobes divergent, tapering distally, each lobe with short inner and longer outer apical cusp, lobes apically acute, margins concave, each lobe with 2–3 short apical robust setae, with 1 pair of robust setae on inner margins, 2 pairs of lateral robust setae.
Remarks. Linguimaera daveyi sp. nov.is one of two Linguimaeraspecies where the dominant gnathopod 2 propodus is chelate (palm angle obtuse), the other species being L. zeidleri Krapp-Schickel, 2008. In L. daveyi sp. nov.the uropod 3 rami are longer, length more than three times width, than in L. zeidleriwhere the rami is only two and a half times as long as wide. Variation in length of uropod 3 rami with increasing specimen size was examined in the closely related species, H. thjisseniand H. hamigera, where more material was available for study. The ratio of the rami length to width was seen to be stable for specimens from 8 to16 mm. Therefore the possibility that L. daveyiis a larger growth stage of L. zeidleris rejected. FIGURE 38. Linguimaera daveyi sp. nov., holotype male, 16.5 mm, SAMA C6498, Port Davey, Tasmania, scales 0.1 mm. Examination of the holotypeof L. zeidlerirevealed some variation in addition to the material figured (Krapp- Schickel, 2008a: fig 17a). The holotypehas only three serrations on the posterior margin of the epimera 3 incomparison to the 6 serrations figure for the species. The fewer number of serrations for L. zeidlerimaterial is similar to L. daveyi. Additionally the holotypeof L. zeidlerihad only 1 pair of medial telsonic setae, a variation on the two pair illustrated. The telsonsetation pattern, both number and placement of setae, may also be used to separate L. daveyifrom L. zeidlerihowever this characters should be used with some caution. The single typespecimen of L. daveyi sp. nov.has an asymmetrical setation pattern on the telson. The lack of symmetry occurs in many specimen of Linguimaera(pers. obs. this study) and does not appear to be the result of damage. Two additional Australian species, Hamimaera thijsseni sp. nov., and H. hamigera(Haswell, 1879), also have a chelate dominant gnathopod 2. The short uropod 3 rami, being less than twice as long as wide, separates these species into Hamimaera.
Distribution. Australia. Tasmania: Port Davey (current study). Linguimaera everardensis sp. nov.( Figs 39–42)
Typematerial. Holotypemale, 21 mm, dissected, 4 slides, south of CapeEverard, Victoria( 38°12.5′S 149°5.5′E), 152 m, Orange Peel Grab, 20 June 1962, coll. CSIROFisheries (G2/62/62-5). Type locality.South of Cape Everard (38°12.5′S 149°5.5′E).
Etymology.Named from the typelocality.
Description.Based on holotypemale, 21 mm, AM P.97874. Head. Eyessubovate; lateral cephalic lobe broad, rounded, apically rounded, anteroventral margin with notch, anteroventral corner rounded. Antenna 1longer than antenna 2; peduncular article 1 shorter than to article 2, with 1 distal robust seta on posterior margin; peduncular article 2 longer than article 3; flagellum articles longer than broad, with 33+ articles; accessory flagellum long, with 6 articles. Antenna 2peduncular article 4 shorter in length than article 5; flagellum with 8 articles. Mandibleaccessory setal row, well developed with 5 setae; palp well developed, article 1 length 1.1 × width, shorter than article 2; article 2 longer than article 3, with many slender setae; article 3 rectilinear, long, 5 × as long as broad, longer than article 1, many marginal setae and 5 apical slender setae. Lower lipwithout apical ducts, mandibular lobes apically rounded. Maxilla 1inner plate subquadrate, with 3 apical plumose setae. Maxilla 2without medial setal row. Pereon. Gnathopod 1coxa anterior margin concave, anteroventral corner produced, acute, posteroventral corner with notch; merus with acute posteroventral corner; carpus length 2.1 × width, 1.1 × propodus length, with rows of setae covering medial surface; propodus subovate, medial surface setal comb absent; palm subacute, straight, entire, lined with robust setae, defined by 2 pairs of robust setae; dactylus closing along palm. FIGURE 39. Linguimaera everardensis sp. nov., holotype male, habitus, 21 mm, AM P. 97874, south of Cape Everard, Victoria. FIGURE 40. Linguimaera everardensis sp. nov., holotype male, 21 mm, south of Cape Everard, Victoria, AM P. 97874, scales 0.2 mm. Gnathopod 2asymmetrical; subchelate; larger gnathopodcoxa posteroventral corner without notch; basis slender, anterodistal corner subquadrate, with several long slender setae; merus with acute posteroventral corner; carpus compressed, length 1.7 × width, anterior and posterior margin with rows of long slender setae; propodusrectilinear, length twice width, margin with rows of slender setae, palm angle subacute, posterodistal shelf subquadrate with 4 robust setae, palm margin with subquadrate tooth, palm defined by elongate subacute tooth and 4 long robust setae;dactylus closing along and reaching end of palm, posterior margin lined with setules, unguis absent. Gnathopod 2smaller gnathopod basis slender, anterodistal corner subquadrate, with several long slender setae; merus with acute posteroventral corner; carpus compressed, length twice width, anterior margin without slender setae, posterior margin with rows of long slender setae; propodus rectilinear, length 2.1 × width, margin with rows of slender setae, palm angle subacute, without posterodistal shelf, palm margin lined with robust setae, palm defined by corner with 2 long and 2 short robust setae; dactylus closing along and reaching end of palm, posterior margin lined with setules, unguis present. Pereopods 3–4slender distally; propodus posterior and distal margin with dense clusters of slender setae. Pereopods 5–6slender distally; basis elongate, not expanded, posterior margin straight, weakly serrate; merus, carpus and propodus not broadened, anterior margins with clusters of long slender setae; dactylus unguis simple. Pereopod 7slender distally; basis elongate, not expanded, posterior margin straight, serrate; merus, carpus and propodus not broadened, anterior margins with clusters of long slender setae; dactylus unguis simple. . FIGURE 41. Linguimaera everardensis sp. nov., holotype male, 21 mm, south of Cape Everard, Victoria, AM P. 97874, scales 0.2 mm. Pleon. Pleonites 1–3dorsally smooth. Epimera 1–3posterior margin smooth, posterodistal corner with well-developed notch, ventral margin smooth. Uropod 1peduncle with 1 basofacial seta, peduncle length 1.1 × outer ramus; inner ramus subequal to outer ramus. Uropod 2peduncle length subequal to outer ramus; inner ramus subequal to outer ramus. Uropod 3rami subequal, with apical slender setae; inner ramuslength 2.5 × peduncle, length 5.2× width. Telsondeeply cleft, length 1.5 × width, lobes divergent, apically notched, inner cusps shorter than outer cusps, with 2 pair of apical robust setae, inner margin with 3 pair of robust setae, with 1 pair of lateral robust setae.
Remarks.The setation pattern of the telsonwith several pair of robust setae on the inner margins is similar to L. schickelaeand L. pirloti. The smooth posterior margin with posterodistal notch of L. everardensisdistinguished it from the latter species which have a serrate margin.
Distribution. Victoria. CapeEverard (current study).
Linguimaera garitima Krapp-Schickel, 2003( Fig. 43–47) Linguimaera garitima Krapp-Schickel, 2003: 266, figs 5–7.— Krapp-Schickel, 2008: 22.
Materialexamined. New South Wales: 1 A male dissected, 7.5 mm, 4 slides, AM P.92229, Black Rock, south of Smoky Cape( 30°56′58″S 153°04′32″E), 13 m, under stones, 13 February 2002, coll. R.T. Springthorpe( NSW1870); 1 b male dissected, 6.0 mm, 1 slide, AM P.92230, Black Rock, south of Smoky Cape( 30°56′58″S 153°04′32″E), 13 m, under stones, 13 February 2002, coll. R.T. Springthorpe( NSW1870); 1 c male, partially dissected, 1 slide (no measurement, damaged only front half of specimen exists), 1 slides, AM P92231, Black Rock, south of Smoky Cape( 30°56′58″S 153°04′32″E), 13 m, under stones, 13 February 2002, coll. R.T. Springthorpe( NSW1870); 7 specimens, AM P.77453, Black Rock, south of Smoky Cape( 30°56′58″S 153°04′32″E), 13m, under stones, 13 February 2002, coll. R.T. Springthorpe( NSW1870); 1 male, AM P.77601, east of Kangarutha Point, south of Tathra( 36°44′56″S 149°59′04″E), 15.9 m, sediment under loose boulders in crevices between rocks, 2 April 2008, coll. S.J. Keable(MI NSW3234). Victoria: 1 male, dissected, 4 slides, 10 mm, NMV J46909, off Crib Point, WesternPort (38°22″00′S 145°13″23′E), 3 m, (CPBS-S 11); many specimens, NMVJ5 6891, off Crib Point, WesternPort (38°22″00′S 145°13″23′E), 3 m, (CPBS-S 11). Tasmania: 1 specimen, AM P.88455, Great Taylors Bay( 43°24′S 147°09′E), depth unknown, 8 November 2008, coll. A. Davey. South Australia: 2 specimens, SAMAC6488, Second Valley, Fleurieu Peninsula( 35°30′35″S 138°12′54″E), 6 m, kelp dominated habitat, February 2002, coll. A. Hirst( SARDIEncounter 2002 Expedition); 6 specimens, SAMAC6499, NorthernReef, Home Bay, Reevesby Island, Sir Joseph Banks Group( 34°31′59″S 136°16′00″E), depth unknown, 20 January 1986, coll. E. Spano; 7 specimens, SAMAC6601, Second Valley, Fleurieu Peninsula( 35°30′35″S 138°12′54″E), depth unknown, kelp dominated habitat, February 2002, coll. A. Hirst( SARDIEncouter 2002 Expedition). Typelocality. Eighty-twokm east northeast of North Point, Flinders Island, eastern Bass Strait, Tasmania, Australia( 39°27.7´S 148°41.4´E).
Remarks.This is the first record of L. garitimanorth of Bass Strait.
Distribution. New South Wales: Smoky Cape(current study). Tasmania. Flinders Island; Great Taylors Bay ( Krapp-Schickel 2003; current study). South Australia: Fleurieu Penninsula, Sir Joseph Banks Group (current study).
1288039932
2003-03-14
SAMA
J.K. Lowry & Homes.
Port Davey
Reef
Bathurst Channel
45
46
2
holotype
1288039921
[199,1221,1388,1413]
Australia
Port Davey
Reef
Bathurst Channel
45
46
1
Tasmania
holotype
1288039916
[151,1074,255,280]
Cape
49
50
2
Cape
holotype
1288039929
1962-06-20
CSIRO
152
-38.208332
Victoria
117
149.09166
49
50
1
Victoria
holotype
1288039931
2002-02-13
NSW
R. T. Springthorpe
13
-30.949444
Black Rock
20
153.07556
Material
52
53
NSW 1870
1
New South Wales
1288039927
2002-02-13
NSW
R. T. Springthorpe
13
-30.949444
Black Rock
20
153.07556
52
53
NSW 1870
1
Cape
1288039911
2002-02-13
NSW
R. T. Springthorpe
13
-30.949444
Black Rock
20
153.07556
52
53
NSW 1870
1
Cape
1288039926
2002-02-13
NSW
R. T. Springthorpe
13
-30.949444
Black Rock
20
153.07556
52
53
NSW 1870
7
Cape
1288039918
2008-04-02
NSW
S. J. Keable
16
-36.74889
Tathra
19
149.98445
Kangarutha Point
52
53
NSW 3234
1
1
Cape
1288039914
2008-11-08
A. Davey.
-43.4
Great Taylors Bay
1143
147.15
52
53
1
Tasmania
1288039934
2002-02
SAMA, SARDI
A. Hirst
6
-35.509724
Second Valley
19
138.215
Fleurieu Peninsula
53
54
2
South Australia
1288039935
1986-01-20
SAMA
E. Spano
Iceland
-34.533054
Home Bay
19
136.26666
Sir Joseph Banks Group
53
54
6
Northern
1288039933
2002-02
SAMA, SARDI
A. Hirst
Iceland
-35.509724
Second Valley
19
138.215
Fleurieu Peninsula
53
54
7
Northern
1288039923
Australia
eastern Bass Strait
-39.461666
Eighty-two
116
148.69
Flinders Island
53
54
1
Tasmania
holotype