Dasella herdmaniae Bruce, 1981a: 50-56

de Gier, Werner & Fransen, Charles H. J. M., 2023, Polka-dotted treasures: Revising a clade of ascidian- and bivalve-associated shrimps (Caridea: Palaemonidae), Contributions to Zoology 92 (3), pp. 179-282 : 214-219

Dasella herdmaniae Bruce, 1981a: 50-56 , figs. ans: Herdmania grandis (Heller, 1878) (Bruce,

1–2. (not Dasella herdmaniae (Lebour, 1938)) . 2003a) and Herdmania momus (Savigny, 1816) Dasella brucei Berggren, 1990: 558 [Type local- ( Pyuridae ) (Bruce, 1981a, 2003a).

ity: Heron Island, Queensland, Australia, 15 Distribution. Three localities off

m]; Bruce, 1990: 10, 16, 18 (listed); Müller, 1993: Queensland, Australia: Heron Island,

23 (listed); Li, 2000: 42, fig. 42 (listed); Bruce, Murdock Point (Mooloolaba), and Moreton 2003a: 111, fig. 1; De Grave & Fransen, 2011: 348 Bay (Berggren, 1990; Bruce, 2003a).

(listed).

Diagnosis (based on Bruce, 1981a). Small- Dasella herdmaniae (Lebour, 1938)

sized shrimp. Rostrum exceeding proximal (figs. 17–19)

segment of antennular peduncle, slightly Dasia herdmaniae Lebour, 1938: 650 , plate depressed, acute, dorsally thickened, with- 1 [type locality: Tuticorin, Gulf of Manaar ,

out distinct lateral carinae, without dorsal Madras, India, associated with ascidian teeth, without or with one acute minute ven- Herdmania pallida (Heller, 1878) (= Herdmania

tral tooth near tip. Antennal spine present, momus (Savigny, 1816)) ].

small. Hepatic spine well-developed, small, Dasella herdmaniae – Lebour, 1945: 279; mobile, below level of antennal spine. Inferior Holthuis, 1952: 17 (listed); Holthuis, 1955: 68, orbital angle distinct, produced. Antero- fig. 4lc, d (listed); Bruce, 1976a: 89; Bruce, lateral angle of carapace broadly rounded, 1981a: 50, figs. 1, 2; Bruce, 1981c: 5; Bruce, feebly to strongly produced. Anterior margin 1983c: 201 (listed); Berggren, 1990: 554, figs.

of carapace between ventral orbital angle 1–3; Chace & Bruce, 1993: 78–79; Müller, 1993:

and antero-lateral angle somewhat straight. 23 (listed); Li, 2000: 42, fig. 43 (listed); Bruce, Sixth abdominal segment with posterolateral 2010a: 63 (listed); De Grave & Fransen, 2011: angle acute, posteroventral angle feebly acute. 348 (listed); Radhakrishnan et al., 2012: table Telson with large dorsal spines at 0.40 and 1 (listed); Horká et al., 2016: 6, figs. 2-4; Samuel

0.70 of telson length, lateral pair of terminal et al., 2016: table 1 (listed); Chow et al., 2021: spines just behind intermediate pair, distal table A.1.

margin of telson with median acute process. Material examined. INDONESIA: 1 male Basal segment of antennular peduncle with pocl. 2.6 mm, 1 ovigerous female pocl. 3.8 mm

one small distolateral tooth. Scaphocerite ( RMNH. CRUS.D.49846; GenBank KU 170689),

with lateral margin almost straight, slit stn BAL.14, Bali, NE-side Pulau Serangan , off between small distolateral tooth and lamina lighthouse, 08°43’17”S 115°15’31”E, 5.iv.2001, 16 shallow. Chela of first pereiopods spatulate, m depth, SCUBA diving, slowly declining reef

with cutting edges minutely pectinate along slope, sandy base, in Herdmania momus entire rim. Second pereiopods unequal, with (Savigny), translucent, coll. C.H.J.M. Fransen.

dactylus barely exceeding fixed finger on both – 1 male, pocl. 2.5 mm, 1 ovigerous female pocl.

chelae, without teeth on cutting edges; palm 2.5 mm, ( RMNH. CRUS.D.58055), stn BAL.05, without tympanal organ. Ambulatory dactyli Sanur, Penjor Point, 08°41’36”S 115°16’20”E, biunguiculate, with large broad distoventral 1.iv.2001, depth 15 m, SCUBA diving, slowly process on flexor margin of corpus; unguis declining reef slope, sandy base, in H. momus , simple, acute. Distoventral spines on ambula- translucent with red chromatophores of body

tory propodi long, acute. and appendages, coll. C.H.J.M. Fransen, photo Colour. Unknown. C.H.J.M. Fransen Downloaded& W from. Renema Brill.com. –06 1 /male 24/2024pocl 12:38.:05 AM via Open Access. This is an open access article distributed under the terms of the CC-BY 4.0 license. https://creativecommons.org/licenses/by/4.0/

2.2 mm, 1 non-ovigerous female pocl. 2.2 mm, stn SUL.08, N Sulawesi, Selat Lembeh, S of ( RMNH. CRUS.D.58056), stn BAL.05, Sanur, Tanjung Batuangus, channels between lava Penjor Point , 08°41’36”S 115°16’20”E, 1.iv.2001, outflows, 01°30’N 125°15’E, 25.x.1994, depth depth 15 m, SCUBA diving, slowly declining 2–5 m, snorkeling, fragile corals on slopes, reef slope, sandy base, in H. momus , translu- down to muddy bottom, coll. J.C. den Hartog.

cent with red chromatophores over body and – 1 ovigerous female pocl. 3.4 mm ( RMNH.

appendages, coll. C.H.J.M. Fransen. – 1 male CRUS.D.48249), stn RBE.38, Moluccas, Ambon, pocl. 2.7 mm, 1 non-ovigerous female pocl. 1.9, Hitu, E coast, N of Tengah tengah, 8.xii.1990, 2.8, 3.5, 3.6 (with bopyroid) mm, ( RMNH. depth 10 m, SCUBA diving, in ascidian, coll.

CRUS.D.58057), stn BAL.13, NE-side Pulau C.H.J.M. Fransen. – 1 ovigerous female pocl.

Serangan, Loloan Serangan, 08°43’39”S 2.5 mm ( RMNH. CRUS.D.48248), stn RBE.34, 115°15’13”E, 5.iv.2001, depth 15 m, SCUBA div- Moluccas, Ambon, Hitu , Ambon Bay, outer ing, slowly declining reef slope, sandy base, in bay, Rumahtiga, 5.xii.1990, depth 3–5 m, H. momus , translucent with red chromato- SCUBA diving,? from ascidian, coll. C.H.J.M .

phores over body and appendages, coll. Fransen, photo M.S.S. Lavaleye. – 1 male pocl.

C.H.J.M. Fransen. – 1 specimen pocl. 1.1 mm 2.9 mm ( RMNH. CRUS.D.47589), stn MAL.24, ( RMNH. CRUS.D.58058), stn BAL.12, E-side Moluccas, Ambon, S coast, Seri bay , 03°45’S Nusa Dua, off Club Med Hotel, N of channel, 128°09’E, 22.xi.1996, depth 15 m, SCUBA diving, 08°47’06”S 115°13’57”E, 4.iv.2001, depth 18 m, in solitary ascidian, H. momus , coll. C.H.J.M .

slowly declining reef slope, sandy base, in Fransen. – 1 male pocl. 2.6 mm, 1 ovigerous ascidian, coll. C.H.J.M. Fransen. – 1 ovigerous female pocl. 4.7 mm ( RMNH. CRUS.D.47582), female pocl. 4.3 mm ( RMNH. CRUS.D.48254), stn MAL.20, Moluccas, Ambon, Ambon bay, N stn SUL.18, N Sulawesi, Selat Lembeh, near coastW of Lilibooi, 03°45’S 128°01’E, 20.xi.1996, Tandarusa, Sarena Kecil West, 01°27’N 125°13’E, depth 30 m, SCUBA diving, from large solitary 24.x.1994, depth 2 m, snorkeling, sandy bank, ascidian aff. Phallusia Savigny , coll. C.H.J.M .

from sandy shore to coral covered slope, in Fransen. – 1 male pocl. 2.8 mm, 1 female pocl.

tunicate, coll. J.C. den Hartog. – 1 non oviger- 4.2 mm ( RMNH. CRUS.D.47580), stn MAL.24, ous female pocl. 1.8 mm ( RMNH. Moluccas, Ambon, S coast, Seri bay , 03°45’S

CRUS.D.48253), SW Sulawesi, Spermonde 128°09’E, 22.xi.1996, depth 15 m , SCUBA diving, Archipelago, Barang Lompo, NW side, in H. momus , coll. C.H.J.M. Fransen. – 1 non 23.ix.1994, depth 3–5 m , SCUBA diving, in ovigerous female pocl. 2.0 mm, 1 male pocl .

Polycarpa sp. ascidian, coll. C.H.J.M. Fransen. 2.5 mm ( RMNH. CRUS.D.47579), stn MAL.32,

– 1 ovigerous female pocl. 3.0 mm, 1 male pocl. Moluccas, Ambon, E coast, close to Cape 2.1 mm ( RMNH. CRUS.D.48252), SW Sulawesi, Meriam , 03°38’S 128°21’E, 23.xi.1996, depth 10 Spermonde Archipelago, Kudingareng Keke, m, SCUBA diving, in solitary ascidian aff .

SSW side, 28.ix.1994, depth 3–5 m, SCUBA div- Phallusia , coll. C.H.J.M. Fransen. – 1 male pocl .

ing, in ascidians, coll. C.H.J.M. Fransen. – 1 ovi- 2.5 mm with pair of abdominal bopyroids, 1 gerous female pocl. 4.6 mm, 1 male pocl. non ovigerous female pocl. 1.8 mm ( RMNH.

3.1 mm, 1 non ovigerous female pocl. 3.5 mm, 1 CRUS.D.47577), stn MAL.24, Moluccas, juvenile pocl. 1.6 mm ( RMNH. CRUS.D.48251), Ambon, S coast, Seri bay, 03°45’S 128°09’E, SW Sulawesi, Spermonde Archipelago, Pulau 22.xi.1996, depth 15 m, SCUBA diving, in H.

Badi , NNW side, 3.x.1994, depth 15 m, SCUBA momus , leg. C.H.J.M. Fransen. – 1 ovigerous diving, in large solitary milkey white transpar- female pocl. 2.4 mm ( RMNH. CRUS.D.53535; ent ascidians, coll. C. Massin. – 1 ovigerous GenBank Downloaded OQ 603086 from Brill ( COI.com))06, /24 stn /2024TER 12:38.10:05, AM female pocl. 4.1 mm ( RMNH. CRUS via.D Open. 48250 Access),. This Halmahera is an open, access Maitara article, Maitara distributed NW, under 0°44’32 the”N terms of the CC-BY 4.0 license. https://creativecommons.org/licenses/by/4.0/ 127°21’50.9”E, 29.x.2009, depth 7 m, SCUBA Polycarpa sp. , coll. J.D. Thomas. MALAYSIA: 1 diving, coral reef with sandy patches, corals ovigerous female pocl. 3.3 mm ( RMNH.

and sea fans abundant, in H. cf. momus (Asc. CRUS.D.53860), stn SEM.37, Sabah, Semporna

33), coll. C.H.J.M. Fransen, fcn. CF-00039, area, S Boheydulang Isl. , outer reef, photo TER.10.0171-175. – 1 ovigerous female 04°35’00.3”N 118°46’39.1”E, 11.xii.2010, depth 7 pocl. 3.0 mm, 1 male pocl. 2.6 mm ( RMNH. m, SCUBA diving, in H. momus , coll. C.H.J.M.

CRUS.D.58059), stn TER.21, Tanjung Ratemu Fransen. – 1 male pocl. 2.3 mm ( RMNH.

(S of river), Halmahera mainland, 0°54’24.7”N CRUS.D.53870; GenBank OQ 603087 ( COI)), stn 127°29’17.7”E, 5.xi.2009, depth 8 m, in ascidian SEM.31, Sabah, Semporna area , N Kulapuan

(Asc 91), coll. A. Gittenberger. – 3 males pocl. Isl., 04°32’09.6”N 118°50’18.6”E, 9.xii.2010,

1.6, 1.7 and 2.0 mm, 1 non ovigerous female depth 20 m, SCUBA diving, in H. momus , coll.

pocl. 1.4 mm ( RMNH. CRUS.D.57964; GenBank C.H.J.M. Fransen. – 1 non ovigerous female OQ603089 ( COI) & OQ600397 (16S)), stn. pocl. 4.4 mm, 1 ovigerous female pocl. 2.9 mm, LEM.03, NE Sulawesi, Lembeh Strait, E Sarena 1 male pocl. 2.6 mm ( RMNH. CRUS.D.53967; Besar, 1°27’34.1634”N 125°14’1.896”E, 31.i.2012, GenBank OQ 603088 ( COI)), stn SEM.57, depth 15 m, in H. momus , coll. C.H.J.M. Sabah, Semporna area, S Larapan Isl. 2, Fransen. – 2 ovigerous females pocl. 3.3 mm, 1 04°32’51.1”N 118°36’31.3”E, 17.xii.2020, depth 12

male pocl. 2.8 mm, with abdominal bopyroid), m, SCUBA diving, in H. momus , coll. C.H.J.M.

1 non ovigerous female pocl. 2.8 mm ( RMNH. Fransen. – 1 non ovigerous female pocl.

CRUS.D.58060), stn LEM.21, NE Sulawesi, 2.4 mm ( RMNH. CRUS.D.53924; GenBank Lembeh Strait, Tanjung Kungkungan, KU064966 ), stn SEM.52, Sabah, Semporna 1°27’58.392”E 125°14’2.2554”E, 10.ii.2012 , depth area, Silumpat Isl. , 04°45’58.7”N 118°23’25.6”E ,

4 m, in H. momus , coll. C.H.J.M. Fransen. – 3 16.xii.2010, depth 25 m, SCUBA diving, in H.

males pocl. 2.7 mm and 2.4 and 2.5 mm, 1 ovi- momus , coll. C.H.J.M. Fransen, photo 1263– gerous females pocl. 4.1 mm ( RMNH. 1270. MOZAMBIQUE: 1 male pocl. 1.4 mm, 1

CRUS.D.58061), stn LEM.33, NE Sulawesi, ovigerous female pocl. 2.3 mm ( RMNH.

Lembeh Strait, Tanjung Nanas I, 1°27’39.492”N CRUS.D.39850), Inhaca Island , 26°S 33°W, 125°13’35.7954”E, 17.ii.2012, depth 15 m, each 19.i.1990, depth 5 m, SCUBA diving, associated

pair in H. momus , coll. C.H.J.M. Fransen. – few with Pyura stolonifera (Heller) , don. M.

specimens ( RMNH. CRUS.D.58062), stn SER.16, Berggren, Kristineberg Marine Biol. Stn.,

Java Sea, Kepulauan Seribu (Thousand Sweden (published by Berggren, M., 1990. J.

Islands ), off Jakarta , Sepa Island, NW-side, Crust. Biol 10(3): 554–558). VANUATU: 1 spec- 5°34’32”S 106°34’48”E, 13.ix.2005, unknown imen ( RMNH. CRUS.D.58064), stn FR06, NW depth, SCUBA diving, in ascidian, coll. C.H.J.M. Tutuba Island, 15°19’33”S 167°10’06”E, Fransen. – 1 ovigerous female pocl. 4.4 mm 13.ix.2006, depth unknown, SCUBA diving, ( RMNH. CRUS.D.54134), stn RAJ.19, W Papua, hand picked, in Herdmania sp. , fcn. CF35 .

Raja Ampat Islands, Maya’s mimpi, Diagnosis (based on Berggren, 1990). Small- 00°30.456’S 130°39.919’E, 25.xi.2007, depth 20 sized shrimp. Rostrum falling short of the

m, SCUBA diving, in H. momus , coll. J.D. distal segment of the antennular peduncle, Thomas. – 1 ovigerous female pocl. 4.0 mm slightly depressed, acute, dorsally thickened, ( RMNH. CRUS.D.58063), stn RAJ.26, W Papua, without distinct lateral carinae, without dor-

Raja Ampat Islands, S. Gam, E entrance Besir sal nor ventral teeth. Antennal spine present,

Bay , Bun Isl., 00°30.988’S 130°33.812’E, small. Hepatic spine well-developed, small, 27.xi.2007, depth 2–12 m, in ascidian? mobile, far Downloaded below level from Brill of.com antennal 06/24/2024 spine12:38.:05 AM via Open Access. This is an open access article distributed under the terms of the CC-BY 4.0 license. https://creativecommons.org/licenses/by/4.0 /

Inferior orbital angle distinct, produced. lateral margin almost straight, slit between Antero-lateral angle of carapace slightly small distolateral tooth and lamina shallow. rounded, slightly produced. Anterior margin Chela of first pereiopods spatulate, with cutof carapace between ventral orbital angle and ting edges minutely pectinate along entire rim. antero-lateral angle straight. Sixth abdomi- Second pereiopods unequal, almost straight nal segment with posterolateral angle acute, dactylus barely exceeding fixed finger on both posteroventral angle feebly acute. Telson with chelae, without teeth on cutting edges, palm large dorsal spines at 0.35 and 0.50 of telson without tympanal organ. Ambulatory dactyli length, lateral pair of terminal spines just biunguiculate, with large broad distoventral behind intermediate pair, distal margin of tel- process on flexor margin of corpus; unguis son rounded, without median process. Basal simple, acute, minute microstructures pressegment of antennular peduncle with one ent on dorsal margin. Distoventral spines on small distolateral tooth. Scaphocerite with ambulatory Downloaded propodi from long, club-shaped Brill.com. 06/24/2024 12:38:05 AM via Open Access. This is an open access article distributed under the terms of the CC-BY 4.0 license. https://creativecommons.org/licenses/by/4.0/

Colour (fig. 17). Whitish/opaque with small red dots scattered over the carapace, abdomen, and chelae of the second pereiopods (Berggren, 1990).

Hosts. Known from various species of ascidians. Pyuridae : Herdmania momus (Savigny, 1816) (Horká et al., 2016) ; Herdmania pallida (Heller, 1878) (Lebour, 1938) ; Pyura stolonifera (Heller, 1878) (Berggren, 1990) ; unidentified ascidian (Bruce, 1981c). Now recorded for the first time from Styelidae : Polycarpa sp. and Ascidiidae : Phallusia sp.

Distribution. Known from various regions of the Indo-West Pacific and the Indian Ocean: Ponta Torres, Inhaca Island (approximately 26°S, 33°W), Mozambique (Berggren, 1990); Gulf of Mannar, India (Lebour, 1938); Heron Island, Australia (Bruce, 1981c); Indonesia (Chow et al., 2021) ; Bali, Indonesia (Horká et al., 2016) ; Sabah, Malaysia (Horká et al., 2016). Now recorded for the first time from Vanuatu (Tutuba Island), and the following new localities in Indonesia: N, SW, and NE Sulawesi; Ambon, the Mollucas; Halmahera; Seribu (Thousand Islands); and Raja Ampat, West Papua.