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Description

“Lophopagurus (Lophopagurus) lacertosus (Henderson, 1888) (Fig. 48, P1.4, fig. 2)

 

Eupagurus lacertosus Henderson, 1888: 63, pl. 6, fig. 7. Pagurus lacertosus: McCulloch 1913: 346; Gordan 1956: 331 (lit.).

 

Eupagurus crenatus Borradaile, 1916: 95, fig. 8.

 

Pagurus crenatus: Gordan 1956: 328 (lit.).

 

Pylopagurus crenatus: Forest & de Saint Laurent 1968: 145; McLaughlin 1981a: 3.

 

Pylopagurus lacertosus: Forest & de Saint Laurent 1968: 145; McLaughlin 1981a: 3.

 

Lophopagurus lacertosus: McLaughlin 1981a: 3 (by implication); McLaughlin & Gunn 1992: 61, fig. 6.

 

Lophopagurus crenatus: McLaughlin 1981a: 3 (by implication); McLaughlin & Gunn 1992: 58, fig. 5.

 

? Pagurus cf. lacertosus: Yaldwyn 1975: 361.

 

[Not Eupagurus lacertosus: Pope 1947: 131, unnumbered figs 3, 4; Dakin et al. 1948: 209, 219; 1952; 199, pl. 44, fig. 7; 1960: 199, pl. 44, fig. 7 = Pagurixus jerviensis McLaughlin & Haig, 1984.]

 

[Not Pagurus lacertosus: Griffin 1967: 306; Healy & Yaldwyn 1970: 72, fig. 35 = Pagurixus jerviensis McLaughlin & Haig, 1984.]

 

[? Not Eupagurus lacertosus: Zarenkov 1968: 182; = Lopho­pagurus (Lophopagurus) nodulosus McLaughlin & Gunn, 1992 (in part).]

 

[Not Pagurus lacertosus: Forest, 1961: 223 = Lophopagurus thompsoni (Filhol, 1885).]

 

[? Not Pagurus lacertosus: Liszka & Underwood, 1990: 47 ? = Pagurixus jerviensis McLaughlin & Haig, 1984.]

 

[Not Pylopagurus crenatus: Probert et al. 1979: 381 = Lophopagurus (L.) nodulosus McLaughlin & Gunn, 1992.]

 

TYPES:

 

Lectotype of Eupagurus lacertosus, by subsequent selection by McLaughlin and Gunn (1992): male (sl =9.6 mm; total body length 33 mm), Challenger Stn 166, NHM 88.33.2 paralectotype: Challenger Stn 166, 1 juvenile, NHM 88.33.2.

 

Holotype of Eupagurus crenatus: male (sl = 5.8 mm), Terra Nova Stn 90, NHM 1917.1.29.134.

 

TYPE LOCALITIES: Eupagurus lacertosus: off New Zealand, Challenger Stu 166, 38°50'S, 169°20'E, 500 m; Eupagu­rus crenatus: Terra Nova Stn 90, from summit, Great King, Three Kings Islands, S 14°W, 8 miles, 183 m.

 

OTHER MATERIAL EXAMINED:

 

NZOI Stns: D39, 4 females (sl =1.1-2.6 mm); D85, 8 males (cl = 10.0-16.0 mm), 8 females (cl = 11.0-14.0 mm), MNHN Pg 4418; D87, 1 female (cl - 14.0 mm); D136, 1 male (cl = 13.0 mm); D137, 3 males (cl = 11.0-13.5 mm), MNHN Pg 4415; D175, 1 female (cl = 12.5 mm); D203, 5 males (cl = 11.0-16.0 mm), 1 female (cl = 10.5 mm), MNHN Pg 4419; D205, 1 male (cl = 16.0 mm), MNHN Pg 4424; D207, 3 males (cl =12.5-15.0 mm), MNHN Pg 4425; D210, 1 male (cl =- 12.0 mm), MNHN Pg 4416; D211, 1 male (cl = 10.5 mm); D232, 2 males (cl = 16.0, 18.0 mm), 1 female (cl = 15.0 mm), 2 ovigerous females (cl = 13.0, 16.0 mm); D234, 1 ovigerous female (cl = 13.5 mm), MNHN Pg 4417; E144, 4 males (cl =12.0-18.0 mm), MNHN Pg 4430; E146, 7 males, (cl = 8.0­13.0 mm), 1 ovigerous female (cl = 12.5 mm); E268, 1 male (sl = 2.9 mm); E400, 10 males (cl = 7.5-11.0 mm), 6 females (6.0-9.0 mm), MNHN Pg 4423, 1 male (sl = 4.6 mm); E408, 1 male (cl = 11.0 mm); E413, 3 males (cl = 11.0-13.0 mm), 1 female (cl = 11.0 mm); E 424, 2 males (cl = 11.0, 13.0 mm); E752, 1 male (cl = 16.0 mm); E 760, 1 male (cl = 6.5 mm), MNHN Pg 4422; E771, 1 female (cl = 12.5 mm); E803, 3 males (cl = 6.5-14.0 mm), 1 ovigerous female (cl = 7.5 mm); E806, 1 male (cl = 13.5 mm), MNHN Pg 4427; E819, 2 males (cl = 5.0, 8.0 mm), 1 female (cl = 9.0 mm), 1 ovigerous female (sl = 6.0 mm); E822, 1 female (sl = 4.7 mm); E827, 1 male, (cl = 13.0 mm), 1 female (cl = 13.0 mm), MNHN Pg 4429; E907, 1 female (sl = 2.8 mm); F79, 1 male (cl = 11.0 mm); F90, 1 male (cl = 13.5 mm), 1 female (cl = 7.0 mm), MNHN Pg 4421; F91, 2 males (cl = 12.0, 12.5 mm), 1 female (cl = 12.0 mm); F95, 1 female (cl = 10.0 mm); F99, 3 males (cl = 10.5-13.0 mm), 6 females (cl = 7.0-10.0 mm); F100, 1 male (cl = 10.0 mm); F101, 1 male (cl = 14.0 mm); F105, 2 males (cl = 10.55, 15.0 mm), 1 female (cl = 11.0 mm), MNHN Pg 4426; F107, 4 males (c1 = 10.0-17.0 mm), 3 females, (cl = 7.0-11.0 mm); F109, 1 male (cl = 10.0 mm), 1 female (cl = 10.0 mm), MNHN Pg 4414; F120, 2 males (cl = 9.0, 11.0 mm); F122, 3 males (cl = 12.0-15.0 mm); F136, 4 females (cl = 12.0-16.0 mm); F138, 2 males (cl = 11.0, 18.0 mm); F145, 1 male (cl 11 mm); F147, 4 males (cl = 7.0-11.0 mm), 1 female (cl = 11.0 mm); F150,1 male (cl = 13.0 mm); 1354, 1 male (sl = 8.2 mm); 1667, 1 male (sl = 5.0 mm), with abdominal bopyrid; 1669, 1 female (sl = 6.1 mm), with bopyrid; 1672, 3 males (sl = 5.6-7.6 mm), 1 ovigerous female (sl = 5.2 mm); 1701, 1 male, (sl = 5.1 mm); 1705, 1 female (sl = 6.5 mm); Z9007, 1 male (sl = 10.2 mm); Z9076, 3 males (sl = 1.1-2.9 mm); Z9104, 2 males (sl = 1.3, 3.0 mm).

 

NMNZ collections: Taiaroa Trench, coll. A.J. Black, 11.8.74, 768-722 m, 1 badly damaged specimen, Cr 9655; BS 190, 1 ovigerous female (cl = 11.0 mm), MNHN Pg 4428; Stn BS 424, 5 males (sl = 4.6-8.2 mm), 4 females (sl = 5.9­6.9 mm), Cr 7547, 2 specimens very poor condition, Cr 7528; Stn BS 548, 1 female (sl = 3.2 mm), Cr 9656; Stn BS 672, 3 males (sl = 5.7-8.3 mm), 3 females (sl = 5.7-8.1 mm), Cr 7575; Stn BS 781, 1 male (sl = 5.1 mm), Cr 8145; Stn BS 785, 1 male (sl = 5.9 mm), 5 females (sl = 3.7-7.8 mm), Cr 8139; Stn BS 806, 1 male (sl = 3.0 mm), Cr 8136; Stn BS 864, 1 female (sl = 2.3 mm), Cr 8128; Stn BS 877, 1 male (sl = 2.8 mm), Cr 8126; Stn BS 941, 1 female (sl = 4.2 mm), Cr 8123; Stn BS 940, 1 female (sl = 6.7 mm), Cr 8230; JC Stn 322/60/70, 5 males (Si = 5.0-11.8 mm), 2 females (sl = 7.6, 9.3 mm), Cr 4909; Stn J03/10/72, 1 female (sl = 7.9 mm), Cr 8113; Stn J1/12/77, 1 male (sl = 7.8 mm), Cr 2673; Stn J01/022/77, 1 male 10.0 mm), Cr 7548; Stn J06/038/81, 1 male (sl = 10.2 in= Cr 8221.

 

NZMD collections: Haul 21, 1 female (cl = 14.5 mil. _ 9814; Haul 28, 1 male (cl = 16.0 mm), Cr 9657.

 

PMBS collections: Canyon E, SE Taiaroa Heads, 25.1 -- 311-329 m, 2 females (sl = 4.3, 6.1 mm). Stn Mu 67, male (sl = 4.2 mm), 2 females (sl = 4.2, 4.3 mm); Stn Mu -­142, 2 males (sl = 3.6, 4.0 mm), 2 females (sl = 2.7, 3.4 mm); Stn Mu 74/95, 4 males (sl = 3.4-6.5 mm), 12 females (sl = 2.3-6.2 mm); Stn Mu 74/202, 7 males (sl = 3.2-6.6 mm), 6 females (sl = 2.9-6.2 mm).

 

UMZC collections: Galathea Stn 626, 1 male (sl = 7.0 mm).

 

DESCRIPTION: Shield slightly longer than broad to slightly broader than long. Rostrum obtusely triangular, acute or bluntly rounded. Ocular peduncles 0.43-0.75 length of shield; corneal diameter included 1.8-3.3 times in peduncular length. Ocular acicles narrowly and acutely triangular. Antennular peduncles overreaching distal margins of corneas by slightly less to slightly more than length of ultimate segment. Antennal peduncles overreaching distal margins of corneas by 0.25-0.65 length of ultimate segment; mesial margin of laterodistal projection with 2 to several teeth. Antennal acicle reaching well beyond proximal margin of fifth peduncular segment.

 

Right cheliped with dactyl triangular and slightly elevated in midline, dorsal surface often covered with low, sometimes spinulose protuber­ances or tubercles; dorsomesial margin with row of closely spaced small tubercles. Palm with dorsomesial margin depressed and armed with single or double row of small teeth or tubercles, dorsomesial com­ponent weakly concave, armed with low, blunt or spinulose tubercles and delimited dorsally by mode­rately broad, spinulose or tuberculate ridge; dorsal surface often covered with low, blunt or spinulose tubercles, sometimes only granules, occasionally almost smooth, dorsal midline with single or double row of somewhat stronger spinulose or blunt tubercles; dorsolateral margin with row of blunt or acute teeth or tubercles. Carpus with double or triple row of prominent teeth on dorsomesial margin becoming widely divergent in distal half, dorsal midline with 1 or 2 rows of acute, smaller tubercles, dorsal surface laterad of midline with numerous small spinulose tubercles.

 

Left cheliped with dorsomesial margin of dactyl unarmed or with row of small teeth or spinulose tubercles proximally. Palm strongly elevated in dorsal midline and armed with row of small tubercles extending onto fixed finger, dorso­lateral margin with closely spaced, compressed teeth, dorsolateral surface unarmed or with minute to moderately well defined, blunt or spinulose tubercles, dorsomesial surface with scattered small tubercles, dorsomesial margin with row of broad, spinulose or blunt teeth. Carpus with row of teeth on dorsolateral margin, strongest at distal angle, dorsomesial margin usually with row of smaller teeth.

 

Ambulatory legs generally similar from right to left, or dactyl of left third slightly stouter. Dactyls usually at least 0.8-1.9 times length of pro­podi; ventral margins each with row of 6-21 spiniform setae; lateral faces often with median longitudinal sulcus and sometimes dorsal row of low protuberances, sometimes lateral face of third left slightly concave. Dorsal surfaces of carpi of second (rarely only right) and frequently also third each with row of prominent, distinct teeth, slightly smaller on third. Anterior lobe of sternite of third pereopods subsemi­circular, sometimes 1 or 2 small denticles.

 

Telson with posterior lobes oblique or rounded, terminal margins with few strong teeth and numerous smaller denticles extending onto lateral margins.

 

COLOUR: Chelipeds and ambulatory legs generally reddish-orange with darker reddish-orange teeth.

 

REPRODUCTION: Very few ovigerous females are repre­sented in the collections. Of those we observed, eggs in early stages of development measured between 0.55 and 0.76 mm in diameter. McLaughlin and Gunn (1992) reported the time of collection of ovigerous females as July, September, November, and January.

 

HABITAT: Gastropod shells; broad depth range between 139 and 840 m.

 

REMARKS: Lophopagurus (L.) lacertosus is one of the commonest species of the genus and has a broad geo­graphic and depth range. After a thorough exami­nation of Borradaile's type specimen, and other speci­mens collected in the vicinity of Three Kings Islands, we concur with the suggestion of McLaughlin and Gunn (1992) that L. lacertosus might prove to be the senior synonym of L.(L.) crenatus. The carpi of the second pereopods, and often also the third are armed in L. lacertosus with a prominent row of distinct teeth (spines of McLaughlin & Gunn). Although Borradaile (1916) did not consider the spiniform protuberances on the right second pereopod of L. (L.) crenatus to be teeth, McLaughlin and Gunn (1992) did. We are of the opinion that the spines in Borradaile's specimen are actually worn down. However, even among con­firmed specimens of L. (L.) lacertosus, variation in the strength of the spines, and even occasionally in their presence or absence, has been found. We have there­fore formally placed L. (L.) crenatus in synonymy with L. (L.) lacertosus.

 

RECORDS FROM NEW ZEALAND: North of Three Kings Islands, west to the eastern slope of Wanganella Bank and the Challenger Plateau; off Greymouth; eastern side of New Zealand from Three Kings Islands to Otago Peninsula; Campbell and Auckland Islands; 36-790, possibly 840 m.

 

DISTRIBUTION: Endemic to New Zealand.”

 

(Saint, Laurent et al, 2000: 153-155)

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Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© National Museum of Natural History, Smithsonian Institution

Source: Antarctic Invertebrates Website (NMNH)

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