“Archasterope altrix Kornicker, new species
Figures 90, 91
ETYMOLOGY.—From the Latin altrix (nourisher, wet-nurse).
HOLOTYPE.—NMV J37163, adult female on slide and in alcohol.
TYPE LOCALITY.—Slope 34, 38°16.40’S, 149°27.60'E, Victoria, S of Point Hicks; depth 800 m.
PARATYPES.—Slope 34: USNM 194046, adult female on slide and in alcohol.
DISTRIBUTION.—Slope 34, 800 m.
REMARKS.—Because the species is similar to Archasterope apex, appendages are compared to those of that species in the description below.
DESCRIPTION OF ADULT FEMALE.— Carapace elongate, slightly higher posterior to midlength; incisur ventral to midheight.
Infold: Anterior and anteroventral infold with numerous bristles; broad list of posterior infold with 25 broad transparent bristles with pores at base, 1 or 2 long bristles (near ventral end), and 33 short bristles; posterior infold between broad list and posterior end of valve with 7 processes and about 40 bristles; about 40 bristles between anteroventral infold and ventral end of broad list of posterior infold.
Selvage: Fringed lamellar prolongation along inner part of ventral edge of incisur.
Vestment: Anterodorsal part of vestment proximal to infold with few rows of spines.
Central Adductor Muscle Attachments: Comprising about 26 ovoid attachments anterior to midlength (only 22 muscle ends counted protruding from body removed from shell).
Carapace Size (length, height in mm): Holotype, 2.06, 1.37, height 67% of length; USNM 194046, 2.23, 1.42, height 64% of length. Length range 2.06-2.23, height range 1.37- 1.42; range of height as percent of length 64-66.
First Antenna: Similar to that of A. apex.
Second Antenna: Similar to that of A. apex, except right limb of USNM 194046 with 3 bristles on 9th exopodial joint (left limb with 4 as on A. apex).
Mandible: Coxale endite broken off except for ventral branch of left limb of USNM 194046; with small slender bristle at base of ventral branch; ventral branch with 5 oblique rows of slender spines and tip with about 6 minute teeth. Basale endite similar to that of A. apex. Basale: Ventral margin with triaenid bristle (with 6 or 7 pairs of spines excluding terminal pair) proximal to deep U-shaped boss; dorsal margin with 3 short bristles near midlength and 2 long terminal bristles. Exopodite and endopodite similar to those of A. apex.
Maxilla: Epipodite, endites, and endopodite similar to those of A. apex. Basale differs from that of A. apex in having 3 or 4 dorsal bristles near distal end instead of only 1.
Fifth, Sixth, and Seventh Limbs: Similar to those of A. apex.
Furca: Each lamella with 9 or 10 claws, otherwise similar to that of A. apex, which has only 9 claws.
Bellonci Organ, Medial Eye; Lateral Eye, Anterior of Body, Posterior of Body, V-Sclerite, and Genitalia: Similar to those of A. apex.
Lips: Except for saddle between 2 lobes of upper lip having 3 small anterior spines, lips similar to those of A. apex.
Eggs: USNM 194046 with unextruded minute round eggs (diameter of largest egg 0.055 mm).
COMPARISONS.—Archasterope altrix differs from A. apex in having 3 short bare bristles instead of 7 near midlength of the dorsal margin of the mandibular basale, and 3 or 4 short bristles instead of 1 on the distal end of the dorsal margin of the basale of the maxilla. Archasterope altrix differs from A. efficax in having 3 short bare bristles instead of 1 near midlength of the dorsal margin of the mandibular basale, and 1 bristle instead of 9 or 10 proximal to midlength on the ventral margin of the basale of the maxilla.”
(Kornicker & Poore, 1996, p.154-157)
Archasterope altrix is een mosselkreeftjessoort uit de familie van de Cylindroleberididae.[1] De wetenschappelijke naam van de soort is voor het eerst geldig gepubliceerd in 1996 door Kornicker in Kornicker & Poore.
Bronnen, noten en/of referenties
