Octomana hadromischa Hendrycks & Conlan, 2003

Springthorpe, Roger T. & Hughes, Lauren E., 2025, Alexandrella wimdecocki sp. nov. (Stilipedidae Holmes, 1908) and new records for three Australian Abyssal Amphipods (Crustacea: Peracarida), Zootaxa 5636 (3), pp. 538-550 : 541-542

publication ID	https://doi.org/10.11646/zootaxa.5636.3.8
publication LSID	lsid:zoobank.org:pub:88E6D05D-9CA4-466C-BDF4-1384314AED99
DOI	https://doi.org/10.5281/zenodo.15561845
persistent identifier	https://treatment.plazi.org/id/03B36401-A764-FFE6-B2BD-B688FB63FB83
treatment provided by	Plazi
scientific name	Octomana hadromischa Hendrycks & Conlan, 2003
status

Treatment

Octomana hadromischa Hendrycks & Conlan, 2003 View in CoL

( Fig. 1C View FIGURE 1 )

Octomana hadromischa Hendrycks & Conlan, 2003: 2345–2350 View in CoL View Cited Treatment , figs 18, 19.

Type Material. Holotype: adult male, 9.5 mm, (appendages on one slide), CMNC 2002–0014 , 34°50.2'N 123°05.11'W, 4050 m, 16 March 1992, Station 1118, Cup# 3. GoogleMaps Allotype: adult female, 10 mm, (appendages on one slide), CMNC 2002–0015 , 34°47.18'N 123°04.18'W, 4000 m, 27 August 1990, Station 327, Cup# C. GoogleMaps Paratypes: female, CMNC 2002–0016 , same data as allotype; GoogleMaps female, ZMUC-CRU-3723 , 34°46.59'N 123°04.04'W, 4000 m, 22 November 1989, Station 208, Cup# 2; GoogleMaps female, USNM 1004364 About USNM , 34°53.98'N 123°11.10'W, 3450 m, 23 November 1994, Station 2305, Cup# 5; GoogleMaps female, CMNC 2002-0017 , 34°53.22'N 123°02.13'W, 4050 m, 4 December 1991, Station 1014, Cup# 5; GoogleMaps female, juvenile male, CMNC 2002–0018 , 34°50.88'N 122°58.68'W, 4050 m, 26 May 1991, Station 621, Cup# 10; GoogleMaps female, CMNC 2002-0019 , 34°47.94'N 123°03.80'W, 3450 m, 15 July 1992, Station 1216, Cup# 3; GoogleMaps male (broken), CMNC 2002–0020 , 34°50.97'N 122°59.79'W, 4000 m, 7 July 1990, Station 439, Cup# 2; GoogleMaps female (broken), CMNC 2002–0021 , 34°49.22'N 123°05.50'W, 4050 m, 9 February 1994, Station 1822, Cup# 6; GoogleMaps juvenile female, (broken), CMNC 2002–0022 , 34°53.07'N 122°59.05'W, 3500 m, 16 July 1991, Station 725, Cup# 3; GoogleMaps female (broken), CMNC 2002–0023 , 34°50.97'N 122°59.79'W, 4050 m, 7 July 1990, Station 439, Cup# 2; GoogleMaps male, CMNC 2002–0024 , 34°55.97'N 123°13.89'W, 3500 m, 3 October 1996, Station 3034, Cup# 13. GoogleMaps

Type locality. North-east Pacific off Point Conception , California, 34°50.2'N, 123°05.11'W, 4050 m. GoogleMaps

Material examined. 3 specimens (extremely poor condition) AM P.100459, Flinders Commonwealth Marine Reserve, Tasmania (40°27'47"S 149°24'54"E to 40°27'40"S 149° 21'50"E), 4129−4131 m, 21 May 2017, Brenke Epibenthic Sledge, coll. L.E. Hughes, F. Koehler, E.K. Kupriyanova, RV Investigator (IN2017_ V03 _016); GoogleMaps 1 specimen, AM P.100460, Central Eastern Commonwealth Marine Reserve, New South Wales, (30°15'48"S 153°51'31"E to 30°17'21"S 153°50'38"E), 4436− 4414 m, 6 June 2017, Brenke Epibenthic Sledge, coll. L.E. Hughes, F. Koehler, E.K. Kupriyanova, RV Investigator (IN2017_ V03 _089); GoogleMaps 1 specimen, AM P.100461, off Fraser Island , Queensland (25°13'11"S 154°09'37"E to 25°15'38"S 154°12'00"E), 4005−4010, 11 June 2017, Brenke Epibenthic Sledge, coll. L.E. Hughes, F. Koehler, E.K. Kupriyanova, RV Investigator , (IN2017_ V03 _110) GoogleMaps .

Depth. 1787–4050 m.

Remarks. The genus Octomana is currently monotypic. The present records from Tasmania to Queensland along eastern Australia are a considerable range extension from the original material of Octomana hadromischa Hendrycks & Conlan, 2003 described from the North-east Pacific off Point Conception, California and off British Columbia.

Specimens are in very poor condition, despite being sampled whole in good order the material became disarticulated in 95% ethanol in the first few years following preservation with no obvious cause.