Trachysalambria starobogatovi ( Ivanov & Hassan, 1976 )

Chan, Tin-Yam, Cleva, Régis & Chu, Ka Hou, 2016, On the genus Trachysalambria Burkenroad, 1934 (Crustacea, Decapoda, Penaeidae), with descriptions of three new species, Zootaxa 4150 (3), pp. 201-254: 243-251

publication ID

http://doi.org/10.11646/zootaxa.4150.3.1

publication LSID

lsid:zoobank.org:pub:323C3A73-8564-470D-94B0-4A71DAE9E940

persistent identifier

http://treatment.plazi.org/id/03818796-FFE9-F911-C0C9-8669613DFCF8

treatment provided by

Plazi

scientific name

Trachysalambria starobogatovi ( Ivanov & Hassan, 1976 )
status

 

Trachysalambria starobogatovi ( Ivanov & Hassan, 1976) 

( Figs. 17View FIGURE 17, 18View FIGURE 18, 20View FIGURE 20. A F)

Trachypenaeus starobogatovi Ivanov & Hassan, 1976: 1300  , figs. 2, 3a [type-locality: Mozambique]. Trachysalambria starobogatovi  .— De Grave & Fransen, 2011: 228.

Material examined. Mozambique. “ Van Gogh ”, stn 401, 19°03’S, 36°29’ E, 25 m, 27.05.1966, male holotype cl 14.2 mm (ZIN-1/62559).GoogleMaps 

South Africa. Natal, FISKOR Prawn Survey : stn K234, off Tugela River, 25–38 m, 0 7.07.1964, 1 female cl 18.7 mm (SAM-A 16313); stn K265, 0 3.08.1964, 2 males cl 10.5 and 11.3 mm (SAM-A 16311); stn K388  , Santa Lucia Bay, 18 m, 0 9.02.1965, 9 males cl 10.4–14.4 mm, 12 females cl 11.0– 23.2 mm (SAM-A 16314); stn K468  , Santa Lucia Bay, 31 m, 14.06.1965, 2 males cl 11.5 and 12.0 mm (SAM-A 16312); stn K470, 14.06.1065, 1 male cl 11.5 mm (SAM-A 13235)  . Tugela River mouth, 29°22.36’S, 31°49.92’ E, 20 m, 28.05.2006, 1 female cl 16.0 mm ( MNHNAbout MNHN IU- 2014-6967), 1 female cl 17.5 mm ( MNHNAbout MNHN IU- 2014-6966).GoogleMaps 

Madagascar. CREVETTIERE 1973, stn CH 72, 25°09’S, 47°14.2’E, 80–85 m, 0 3.03.1973, 1 female cl 23.0 mm ( MNHNAbout MNHN IU- 2014-6964)GoogleMaps  . Antongil Bay , 15°38.8’S, 49°42.4’E, 20 m, 0 2.04.1973, 1 female cl 16.5 mm ( MNHNAbout MNHN IU- 2014-6965)GoogleMaps  . ATIMO VATAE: stn CP 3548, 25°17.0’S, 46°34.1’ E, 63–66 m, 0 4.05.2010, 1 female cl 24.7 mm (MNHN IU-2014-12063), 1 female cl 17.2 mm (MNHN IU-2014-12064); stn CP 3549, 25°16.9’S, 46°31.3’ E, 53–54 m, 0 4.05.2010, 1 male cl 10.7 mm, 2 females cl 14.3 and 15.5 mm (MNHN IU- 2010-2761), 1 female cl 24.7 mm (MNHN IU-2014-12065); stn TP 19, 25°04.4’S, 46°55.3’ E, 19–26 m, 12.05.2010, 1 male cl 14.4 mm (MNHN IU-2014-8774).

Description. Entire body densely pubescent. Rostrum with 7–10 (usually 8, excluding epigastric tooth) teeth along dorsal border; distinctly curved upwards and with tip slightly recurved downwards in females, ventral border markedly convex but ventral margin of tip concave, tips of rostral teeth aligned in a concave configuration; in males rostrum rather horizontal straight and tip slightly recurved downwards, ventral border convex but ventral margin of tip concave, tips of rostral teeth more or less aligned in a straight line; extending to about tip of second segment of antennular peduncle; postrostral carina low and extending to about middle of carapace. Pereiopods I to III with well-developed epipods. Pereiopod I generally bearing small ischial spine. Pereiopod IV in females with coxa not medially expanded. Pereiopod V reaching middle to nearly tip of scaphocerite. Abdomen with low dorsal carinae on somites II to VI; that on somite II short but obvious; dorsal carina only present on posterior 2/3 of somite III; carinae on somites IV and V posteriorly incised, not terminating in spines. Telson with dorsolateral carinae heavily ridged but blunt, bearing 3 pairs of movable lateral spines. Male petasma with lateral margins of stem distinctly converging distally; distolateral lobes with ventral margins more or less straight, tips of dorsal and ventral flaps coinciding, forming sharp angle. Female thelycum with anterior plate semi-triangular, generally sunken or flattened; anterior margin of posterior plate distinctly concave, with median cleft.

Coloration. Body generally pinkish brown all over. Eyes blackish brown. Antennular flagella pinkish brown and antennal flagella whitish. Pereiopods pale pink to pale white, with some yellowish patches. Pleopods orangish brown. Uropods reddish brown except basal 1/4 pinkish brown, outer and distal margins of exopods and inner and distal margins of endopod whitish.

Distribution. Southwestern Indian Ocean. Known with certainty from Mozambique, Madagascar and eastern coast of South Africa; at depths of 18– 85 m.

Remarks. Trachysalambria starobogatovi  is very poorly known and often overlooked in literature (e.g., Pèrez Farfante & Kensley 1999). Sakaji & Hayashi (2003) followed the original description of T. starobogatovi  by Ivanov & Hassan (1976) in treating this species as having epipods only on pereiopods I and III. Re-examination of the holotype of T. starobogatovi  reveals that there are actually epipods on the anterior three pereiopods in this species ( Fig. 18View FIGURE 18) and therefore it belongs to the “ Trachysalambria curvirostris  ” group. The shape of the genitalia and the posterior incisions of the abdominal dorsal carinae used by Ivanov & Hassan (1976) to separate T. starobogatovi  from T. curvirostris  are not useful. The petasma and thelycum of T. starobogatovi  are both of the general shape of the genus ( Fig. 17View FIGURE 17 F –J). The posterior incisions on the dorsal carinae of the abdominal somites IV and V in T. starobogatovi  are actually not different from congeners that lack posterior spines on these two somites ( Fig. 17View FIGURE 17 C, D). Nevertheless, T. starobogatovi  is unique in the genus by having a short postrostral carina and weak abdominal dorsal carinae ( Fig. 17View FIGURE 17 D), as well as the tip of rostrum recurved downwards ( Fig. 17View FIGURE 17 A, B). The short postrostral carina and weak abdominal dorsal carinae of T. starobogatovi  aligns it with T. albicoma  . The latter species, however, has the rostrum more horizontal and with the tip not recurved downwards in both sexes ( Fig. 16View FIGURE 16 A, B). In T. albicoma  the carinae on the abdomen and telson are even weaker ( Fig. 16View FIGURE 16 C, H) and with the dorsal carina on the abdominal somite II often indistinct. Moreover, the abdomen is nearly naked in T. albicoma  but pubescent in T. starobogatovi  . Other than with large genetic divergence (>7% in 12S and 16S rRNA genes, Tables 2, 3), the coloration of these two species is also different. Although both species have white antennal flagella and white margined uropods, the body of T. starobogatovi  is generally pinkish including the rostrum ( Fig. 20View FIGURE 20. A F), while T. albicoma  is generally greyish with the tip of rostrum pale white ( Fig. 20View FIGURE 20. A E).

Trachysalambria crosnieri  sp. nov.

Trachysalambria brevisuturae 

Rimapenaeus similis 

1.0 Trachysalambria malaiana  (Indonesia)

1.0 1.0 Trachysalambria malaiana  (Philippines)

0.99 Megokris pescadoreenis 

Trachypenaeus anchoralis 

1.0 1.0 Trachysalambria palaestinensis  (Israel 1)

Trachysalambria palaestinensis  (Israel 2)

0.90 Trachysalambria starobogatovi  (Madagascar 1)

1.0 Trachysalambria starobogatovi  (Madagascar 2)

Trachysalambria starobogatovi  (Madagascar 3)

Trachysalambria starobogatovi  (South Africa)

1.0 Trachysalambria aspera  (Madagascar 1)

Trachysalambria aspera  (Seychelles)

Trachysalambria aspera  (Indonesia)

1.0 Trachysalambria aspera  (Taiwan 1)

1.0 0.98 Trachysalambria aspera  (New Caledonia)

Trachysalambria aspera  (Taiwan 2)

Trachysalambria aspera  (Philippines)

Trachysalambria aspera  (Madagascar 2)

Trachysalambria aspera  (Madagascar 3)

0.98 0.73 Trachysalambria parvispina  sp. nov. (Indonesia)

1.0 Trachysalambria parvispina  sp. nov. (Seychelles)

Trachysalambria parvispina  sp. nov. (Fiji)

1.0 Trachysalambria dentata  sp. nov. (Philippines 1)

0.91 Trachysalambria dentata  sp. nov. (Philippines 3)

1.0 0.97 Trachysalambria dentata  sp. nov. (Philippines 2)

Trachysalambria dentata  sp. nov. (Taiwan)

0.97 Trachysalambria nanesi  (Taiwan 2)

0.57 Trachysalambria nanesi  (Taiwan 1)

1.0 Trachysalambria nanesi  (Philippines)

Trachysalambria nanesi  (Japan)

0.98 Trachysalambria nanesi  (Australia)

0.99 1.0 Trachysalambria longipes  (Seychelles)

Trachysalambria longipes  (Fiji)

Trachysalambria curvirostris  (Taiwan 1)

Trachysalambria curvirostris  (Taiwan 2, pink)

0.55 Trachysalambria curvirostris  (Taiwan 3, grey)

0.99 Trachysalambria curvirostris  (Taiwan 5, grey)

Trachysalambria curvirostris  (Taiwan 6)

1.0 Trachysalambria curvirostris  (Taiwan 4, pink)

1.0 Trachysalambria curvirostris  (Japan)

1.0 Trachysalambria albicoma  (Japan)

Trachysalambria albicoma  (Taiwan) Metapenaeus ensis 

0.06

malaiana  , T. nan: T. nanesi  , T. pal: T. palaestinensis  , T. par: T. parvispina  sp. nov., T. sta: T. starobogatovi, Meg  : Megokris pescadoreenis, Met  : Metapenaeus ensis, Rem  : Remipenaeus similis, Tra  : Trachypenaeus anchoralis  .

T. alb (2) T. asp (9) T. bre T. cro T. cur (7) T. đen (4) T. lon (2) T. mal (2) T. nan (5) T. pal (2) T. par (3) T. sta (4) Meg Met Rem

alb (2) 0.0 0 8

asp (9) 0.126-0.136 0.000-0.020

bre 0.161-0.165 0.165-0.169 Nil

cro 0.211-0.217 0.226-0.228 0.220 Nil

cur (7) 0.065-0.087 0.112-0.128 0.146-0.152 0.211-0.213 0.000-0.016

đen (4) 0.112-0.118 0.085-0.098 0.159-0.161 0.226-0.234 0.091-0.104 0.000-0.010

lon (2) 0.122-0.130 0.102-0.114 0.150-0.152 0.226-0.230 0.116-0.120 0.100-0.104 0.006

mal (2) 0.110-0.120 0.122-0.130 0.144-0.146 0.217 0.110-0.114 0.116-0.124 0.128-0.132 0.002

nan (5) 0.112-0.118 0.089-0.102 0.148-0.161 0.234-0.236 0.110-0.118 0.071-0.077 0.098-0.112 0.120-0.128 0.000-0.026

pal (2) 0.120 0.132-0.136 0.179 0.244 0.126-0.128 0.112-0.118 0.140-0.142 0.122-0.124 0.126-0.130 0.000

par (3) 0.132-0.138 0.110-0.114 0.152 0.244-0.246 0.114-0.120 0.041-0.045 0.106-0.110 0.124-0.128 0.075-0.089 0.132-0.134 0.000-0.002

sta (4) 0.100-0.108 0.132-0.136 0.169-0.171 0.246-0.248 0.102-0.112 0.112-0.114 0.132-0.138 0.140-0.144 0.122-0.128 0.124 0.134-0.136 0.000-0.004 0.116-0.120 0.124-0.130 0.142 0.215 0.116-0.118 0.112-0.120 0.128-0.130 0.049-0.051 0.124-0.128 0.136 0.134-0.136 0.136-0.138 Nil 0.173-0.175 0.157-0.161 0.175 0.167 0.159 0.159-0.165 0.161-0.165 0.169 0.165-0.167 0.187 0.177 0.197-0.199 0.173 Nil

0.128-0.132 0.140-0.148 0.148 0.203 0.122 0.134-0.142 0.128-0.130 0.104 0.152-0.157 0.136 0.150-0.152 0.150 0.108 0.167 Nil 0.124-0.132 0.126-0.132 0.154 0.222 0.120-0.122 0.124-0.132 0.136-0.142 0.051-0.053 0.136-0.142 0.136 0.144-0.146 0.146-0.148 0.039 0.171 0.120 TABLE ³. Uncorrecteđ pairwise genetic đistance (p-đistance) baseđ on the mitochonđrial 16S rRNA gene (467 bp) in Trachysalambria  species anđ outgroups. Numbers in parentheses refers to number inđiviđuals sequenceđ. T. alb: Trachysalambria albicoma  , T. asp: T. aspera  , T. bre: T. brevisuturae  , T. cro: T. crosnieri  sp. nov., T. cur: T. curvirostris  , T. đen: T. dentata  sp. nov., T. lon: T. longipes  , T.: T. malaiana  , T. nan: T. nanesi  , T. pal: T. palaestinensis  , T. par: T. parvispina  sp. nov., T. sta: T. starobogatovi, Meg  : Megokris pescadoreenis, Met  : Metapenaeus ensis, Rem  : Remipenaeus similis  ,: Trachypenaeus anchoralis  .

Trachysalambria starobogatovi  is also rather similar to T. palaestinensis  but with the abdominal and telson carinae less developed or less sharp ( Fig. 17View FIGURE 17 K, L). Furthermore, the rostrum is generally less curved and with the tip not recurved downwards in T. palaestinensis  . The rostrum having a recurved downward tip in T. starobogatovi  ( Fig. 17View FIGURE 17 A, B) is somewhat similar to the rostrum of T. nansei  ( Fig. 10View FIGURE 10 A, C –G). Nevertheless, the rostrum is not distinctly S-shaped in T. starobogatovi  and there are many differences between these two species (e.g., height of abdominal carinae, length of postrostral carina and pereiopod V, etc.). On the other hand, material of the highly variable species, T. aspera  , from the western Indian Ocean often has lower abdominal carinae and with the postrostral carina failed to extend to posterior carapace. Although these T. aspera  specimens closely resemble T. starobogatovi  , they can still be distinguished from the present species by the tip of rostrum not curving downwards ( Fig. 12View FIGURE 12 A, B, D, E) and having a longer pereiopod V (extending to tip of scaphocerite vs. failed to reach tip of scaphocerite). Genetic analysis confirms that T. starobogatovi  is distinct from the other species of the genus (?10% sequence divergence in 12S rRNA gene, Table 2).

At present, T. starobogatovi  is only confirmed to occur in the southwestern Indian Ocean from the eastern coast of South Africa to Mozambique and Madagascar. Although previous reports of “ T. curvirostris  ” from these areas (e.g., Champion 1973; Kensley 1971; de Freitas 1987) likely represent T. starobogatovi  , they do not contain enough information for confirmation. For example, the Mozambique material reported by de Freitas (1987) is clearly not T. curvirostris  in having a short postrostral carina and white antennal flagella. However, it cannot be further determined if de Freitas’ (1987) material belongs to T. starobogatovi  or T. aspera  .

MNHN

Museum National d'Histoire Naturelle

Kingdom

Animalia

Phylum

Arthropoda

Class

Malacostraca

Order

Decapoda

Family

Penaeidae

Genus

Trachysalambria

Loc

Trachysalambria starobogatovi ( Ivanov & Hassan, 1976 )

Chan, Tin-Yam, Cleva, Régis & Chu, Ka Hou 2016

2016
Loc

Trachypenaeus starobogatovi

De 2011: 228Ivanov 1976: 1300

2011