Scherocumella weinbergae, Petrescu, 2018

Petrescu, Iorgu, 2018, On the Family Nannastacidae (Crustacea, Cumacea) from the Australian Museum Collection, Records of the Australian Museum 70 (1), pp. 1-111 : 41

publication ID

https://doi.org/ 10.3853/j.2201-4349.70.2018.1645

publication LSID

lsid:zoobank.org:pub:82A58B37-13FE-4EA8-AFF2-E954CDBEFD69

DOI

https://doi.org/10.5281/zenodo.5237149

persistent identifier

https://treatment.plazi.org/id/1D178785-FFBF-FF93-5353-05CBFA84B386

treatment provided by

Felipe

scientific name

Scherocumella weinbergae
status

sp. nov.

Scherocumella weinbergae View in CoL sp. nov.

Fig. 45 View Figure 45

Holotype ♀, 2.3 mm, P.90680, Australia, TAS, Freycinet Peninsula , Joes Bight, -42.278° 148.312°, 17 m, airlift, sandy boulders, 1 May 1991, R. T. Springthorpe, S.J. Keable, TAS-333, in AM . Paratypes: 1♀, P.90681; 2♀♀, P.90975; 1♀, MGAB CUM 1682 .

Etymology. The species is dedicated to Dr Medeea Weinberg, world specialist in Diptera Asilidae and other families, who work in the “GrigoreAntipa” (1954–1991), with exceptional results in the study of Romanian and foreign faunas (from U.S.A. to Australia), as a sign of great appreciation and eternal gratitude for her work and friendship.

Diagnosis. Carapace 0.36 body length, covered with densely small tubercles, 2 dorsal parallel rows of strong and long tubercles, 1 pair just behind each visual complex of lenses, 1 pair of tubercles on top of pseudorostral lobes; pereonites 2–5 and pleonites 1–4 with dorsal pairs of tubercles posteriorly directed, pleonite 5 with 2 tubercles, pleonites 3–5 with 1 dorsal carina, last pleonite with short dorsal serrate line; maxilliped 3 propodus 2nd longest article, 3.6 dactylus length; pereopod 2 dactylus 2 propodus length; uropodal peduncle 1.2 pleonite 6 length, 1.2 endopod length, exopod 0.59 of endopod length, endopod with 1 subterminal short stout seta.

Description. Carapace 0.36 body length, 1.8 as long as high; densely covered with small tubercles, 2 dorsal parallel rows of strong and long tubercles, a pair just behind each visual complex of lenses; pseudorostrum obliquely directed, 0.4 carapace length, 1 pair of tubercles on top of pseudorostral lobes; large antennal notch; anterolateral margin serrated in anterior part ( Fig. 45 A, B View Figure 45 ). — Pereonites 2–5 and pleonites 1–4 with dorsal pairs of tubercles posteriorly directed, pleonite 5 with 2 pairs of tubercles, pleonites 3–5 with a dorsal carina, last pleonite with short dorsal serrate line. Pleonites 1–4 also with lateral tubercles. — Antenna 1 peduncle article 1 0.7 rest of article’s length, with 2 simple setae; article 2 1.5 article 3 length, with 3 pedunculate setae and 1 process; main flagellum 0.8 article 3 length; accessory flagellum with 1 article; aesthetascs 3.2 main flagellum length ( Fig. 45 D View Figure 45 ). — Maxilliped 3 basis 0.8 rest of article’s length, with 3 plumose setae and 1 process; merus 2.1 ischium length, with 2 plumose setae; carpus as long as merus, with 1 plumose seta; propodus 1.4 carpus length, with 1 simple and 2 pappose setae; dactylus 0.3 propodus length, with 1 robust terminal seta; with exopod (Fig, 45 E). — Pereopod 1 basis 0.4 rest of article’s length, with hyaline crest; merus 2 ischium length, with 1 tooth; carpus 2 merus length, with hyaline crest; propodus 0.8 carpus length, with 1 simple seta; dactylus 0.6 propodus length, with 2 simple setae; with exopod ( Fig. 45 F View Figure 45 ). — Pereopod 2 basis as long as rest of articles, hyaline crest and 1 simple seta; merus 7 ischium length, with 1 simple seta; carpus 1.5 merus length, with hyaline crest and 1 simple seta; dactylus 2 propodus length, with 6 simple setae; with exopod ( Fig. 45 G View Figure 45 ). — Pereopods 3–5 with decreasing basis and increasing carpus; basis finely tuberculated; dactylus fused with terminal seta ( Fig. 45 H–J View Figure 45 ). — Uropod peduncle 1.2 pleonite 6 length, with strong serrate margin, 1 serrate carina, 1.2 endopod length; exopod 0.59 endopod length, with 1 terminal simple seta; endopod with serrate margin and 1 serrate carina, with 1 subterminal short and 1 terminal longer simple seta ( Fig. 45 K View Figure 45 ).

Remarks. The new species is close related with S. clavata ( Hale, 1945) , but with a dorsal carina on pleonites 3–6, missing in Hale’s species.

Distribution. Australia: TAS—Freycinet Peninsula, at 17 m; and NSW—Jervis Bay, at 10–18 m depth.

R

Departamento de Geologia, Universidad de Chile

T

Tavera, Department of Geology and Geophysics

AM

Australian Museum

MGAB

Muzeul de Istorie Naturala "Grigore Antipa"

Darwin Core Archive (for parent article) View in SIBiLS Plain XML RDF