Prosadenoporus fujianensis ( Sun, 2001 ) Maslakova & Norenburg, 2008

Maslakova, Svetlana A. & Norenburg, Jon L., 2008, Revision of the smiling worms, genera Prosadenoporus Bürger, 1890 and Pantinonemertes Moore and Gibson, 1981 and description of a new species Prosadenoporus floridensis sp. nov. (Prosorhochmidae; Hoplonemertea; Nemertea) from Florida and Belize, Journal of Natural History 42 (25 - 26), pp. 1689-1727 : 1713-1716

publication ID

https://doi.org/ 10.1080/00222930802130286

persistent identifier

https://treatment.plazi.org/id/816E8F49-221A-FFAF-327F-FCE5FE4521B3

treatment provided by

Carolina

scientific name

Prosadenoporus fujianensis ( Sun, 2001 )
status

comb. nov.

Prosadenoporus fujianensis ( Sun, 2001) , new combination

( Figures 8F View Figure 8 and 10D View Figure 10 ; Tables 2 and 3)

Pantinomertes fujianensis ( Sun 2001)

Etymology

The species is named after the place of discovery – Fujian province of China.

Type material

Prosadenoporus fujianensis ( Sun, 2001) comb. nov. Holotype DH 07 and paratypes DH08 and DH09 are deposited with the College of Fisheries , Ocean University of Qingdao, China .

Material examined

Prosadenoporus fujianensis ( Sun, 2001) comb. nov. Holotype DH07, paratypes DH08 and DH09.

Diagnosis

Prosadenoporus fujianensis comb. nov. differs from all the other species of the genus except P. winsori by having multiple pouches of accessory stylets. It differs from P. winsori by lacking the pale mid-dorsal stripe and the neurochords, and by having fewer proboscis nerves (19–20 compared with 22–24) and fewer accessory stylet pouches (5 compared with 6–9) ( Table 3). Central stylet (S) 120 mm long, basis (B) truncated 380 mm long, S:B ratio 0.32. Data at hand are insufficient to make statistical comparison of the stylet metrics with other species.

Habitat and distribution

Semi-terrestrial; in mud not soaked with water in the mangrove area in the estuary of Jiulong Jiang River, Fugong, Longhai County, Fujian Province, China.

Remarks

The original description mentions 19 proboscis nerves in all three specimens, however, our re-investigation showed that the paratypes have 19 and the holotype has 20 proboscis nerves. Morphologically , this species most resembles another mangrove-dwelling species – P. winsori from Queensland, Australia. Unfortunately ,

tissue for molecular analysis was not available to us to compare the sequence divergence between the two species.

Prosadenoporus mooreae ( Gibson, 1982b) , new combination

( Figures 1C, 1D View Figure 1 , 7 View Figure 7 D–I and 10B; Tables 1–4)

Pantinonemertes mooreae ( Gibson 1982b, 1990; Sundberg 1989; Gibson and Sundberg 1992; Sun 2001)

Etymology

The species is named after Dr Janet Moore of the Department of Zoology, University of Cambridge, as a tribute to her work on the terrestrial nemerteans of the world.

Type material

Prosadenoporus mooreae ( Gibson, 1982b) comb. nov. Sections of holotype W5903 and paratype W5904 are held at the Australian Museum, Sydney, Australia.

Material examined

Prosadenoporus mooreae ( Gibson, 1982b) comb. nov. Holotype W5903 and paratype W5904. Several additional specimens (most sectioned) collected by SAM in March 2003 from Picnic Bay and Cockle Bay , Magnetic Island , Queensland, Australia held at the National Museum of Natural History in Washington, DC, USA ( USNM 1087356 About USNM , 1087357 About USNM , 1087359–1087361 About USNM , 1087358 About USNM ). One unsectioned specimen from the same collecting trip G20028 is held in 70% ethanol at the Museum of Tropical Queensland, Townsville, Queensland, Australia.

Diagnosis

Prosadenoporus mooreae comb. nov. does not have any known morphological apomorphies. It differs from all other species of the genus except P. mortoni by having a distinct greenish colour pattern with a dark-green to black mid-dorsal longitudinal stripe ( Figures 1C and 1D View Figure 1 ). Similar to P. mortoni , P. mooreae has a very slender rounded stylet basis ( Figure 10B View Figure 10 ). With the exception of the number of proboscis nerves (15–16 vs. 14) these two species are morphologically indistinguishable ( Table 2, 3) and represent the closest molecular pair in the genus, exhibiting sequence divergence of 2.4% (16S) and 4.1% (COI) ( Tables 1 and 4). Two accessory stylet pouches. Central stylet 50–130 mm long, average 5105 mm, basis (B) rounded 130–160 mm long, average 5145 mm, S:B ratio 0.33–0.92, average50.73. All three stylet metrics are significantly different from those of P. winsori . The S:B ratio is significantly different from that of Prosadenoporus floridensis (p 50.05). Data at hand are insufficient to make the statistical comparisons with other species.

Habitat and distribution

In silty mud beneath rocks and coral boulders, mid- to low-shore, intertidal. Picnic Bay and Cockle Bay, Magnetic Island, Queensland, Australia.

Remarks

Two specimens were collected originally in Picnic Bay by R. Gibson in 1975. SAM collected nine additional specimens from the nearby Cockle Bay in March 2003, and two from Picnic Bay. Gibson (1982b) reported only one measurement for the stylet apparatus (S:B ratio50.33), which is very different from that observed by SAM (average S:B for three specimens50.86). With the data at hand it is not possible to determine whether the difference is statistically significant. We pooled our measurements with Gibson’s and adjusted the means for the species accordingly. Contrary to Gibson’s observations, SAM found that P. mooreae uses its proboscis for rapid locomotion. Upon the slightest contact the worm everts its proboscis and quickly draws it back in, pulling itself into a crevice and out of reach of the collector.

Kingdom

Animalia

Phylum

Nemertea

Class

Enopla

Order

Monostilifera

Family

Prosorhochmidae

Genus

Prosadenoporus

Loc

Prosadenoporus fujianensis ( Sun, 2001 )

Maslakova, Svetlana A. & Norenburg, Jon L. 2008
2008
Loc

Prosadenoporus fujianensis ( Sun, 2001 )

Maslakova & Norenburg 2008
2008
Loc

Prosadenoporus fujianensis ( Sun, 2001 )

Maslakova & Norenburg 2008
2008
Loc

Prosadenoporus mooreae ( Gibson, 1982b )

Maslakova & Norenburg 2008
2008
Loc

Prosadenoporus mooreae ( Gibson, 1982b )

Maslakova & Norenburg 2008
2008
Loc

Prosadenoporus mooreae ( Gibson, 1982b )

Maslakova & Norenburg 2008
2008
Loc

Pantinonemertes mooreae

Gibson 1982
1982
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