Microgloma nhanduti

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This page should be cited as follows (rationale):
Benaim N, Absalão R (2011) Microgloma Sanders & Allen, 1973 (Nuculanidae) and Pristigloma Dall, 1900 (Pristiglomidae) (Pelecypoda) in the Campos Basin of Brazil. ZooKeys 152 : 1–20, doi. Versioned wiki page: 2011-12-09, version 19891, https://species-id.net/w/index.php?title=Microgloma_nhanduti&oldid=19891 , contributors (alphabetical order): Pensoft Publishers.

Citation formats to copy and paste

BibTeX:

@article{Benaim2011ZooKeys152,
author = {Benaim, Natalia Pereira AND Absalão, Ricardo Silva},
journal = {ZooKeys},
publisher = {Pensoft Publishers},
title = {Microgloma Sanders & Allen, 1973 (Nuculanidae) and Pristigloma Dall, 1900 (Pristiglomidae) (Pelecypoda) in the Campos Basin of Brazil},
year = {2011},
volume = {152},
issue = {},
pages = {1--20},
doi = {10.3897/zookeys.152.1646},
url = {http://www.pensoft.net/journals/zookeys/article/1646/abstract},
note = {Versioned wiki page: 2011-12-09, version 19891, https://species-id.net/w/index.php?title=Microgloma_nhanduti&oldid=19891 , contributors (alphabetical order): Pensoft Publishers.}

}

RIS/ Endnote:

TY - JOUR
T1 - Microgloma Sanders & Allen, 1973 (Nuculanidae) and Pristigloma Dall, 1900 (Pristiglomidae) (Pelecypoda) in the Campos Basin of Brazil
A1 - Benaim N
A1 - Absalão R
Y1 - 2011
JF - ZooKeys
JA -
VL - 152
IS -
UR - http://dx.doi.org/10.3897/zookeys.152.1646
SP - 1
EP - 20
PB - Pensoft Publishers
M1 - Versioned wiki page: 2011-12-09, version 19891, https://species-id.net/w/index.php?title=Microgloma_nhanduti&oldid=19891 , contributors (alphabetical order): Pensoft Publishers.

M3 - doi:10.3897/zookeys.152.1646

Wikipedia/ Citizendium:

<ref name="Benaim2011ZooKeys152">{{Citation
| author = Benaim N, Absalão R
| title = Microgloma Sanders & Allen, 1973 (Nuculanidae) and Pristigloma Dall, 1900 (Pristiglomidae) (Pelecypoda) in the Campos Basin of Brazil
| journal = ZooKeys
| year = 2011
| volume = 152
| issue =
| pages = 1--20
| pmid =
| publisher = Pensoft Publishers
| doi = 10.3897/zookeys.152.1646
| url = http://www.pensoft.net/journals/zookeys/article/1646/abstract
| pmc =
| accessdate = 2019-06-20

}} Versioned wiki page: 2011-12-09, version 19891, https://species-id.net/w/index.php?title=Microgloma_nhanduti&oldid=19891 , contributors (alphabetical order): Pensoft Publishers.</ref>

See also the citation download page at the journal.


Taxonavigation

Ordo: Nuculanoida
Familia: Nuculanidae
Genus: Microgloma

Name

Microgloma nhanduti Benaim & Absalão, 2011 sp. n.Wikispecies linkZooBank linkPensoft Profile

Holotype

MNRJ 19.113 (Figs 26, 28).

Type locality

Campos Basin, #54, 12/12/2002, 750m, 21°57'17,5"S, 39°56'01,1"W.

Paratypes

IBUFRJ 14991 (# 54, 2002), 2 valves and 1 specimen; IBUFRJ 19176 (# 64, 2003), 1 specimen; MZSP 99980 (# 54, 2002), 5 valves; USNM 1156944 (# 54, 2002), 5 valves; MNHN 24597 (# 54, 2002), 2 valves 1 specimen.

Etymology

Nhanduti is a Tupi–Guarani term (the language spoken by the largest groups of native people living in Brazil prior to the European colonization) for a spider web–like structure, similar to those present on the prodissoconch of this species. The species epithet is proposed as a noun in apposition.

Material examined

IBUFRJ 15140 (# 69, 2002), 17 valves and 2 specimens; IBUFRJ 15283 (# 69, 2002), 6 valves; IBUFRJ 19115 (# 33, 2002), 1 valve; IBUFRJ 19116 (# 64, 2002), 16 valves and 1 specimen; IBUFRJ 19117, (# 49, 2003), 7 valves; IBUFRJ 19118, (# 54, 2003), 1 valve; IBUFRJ 19119, (# 59, 2003), 10 valves and 2 specimens; IBUFRJ 19121, (# 34, 2002), 1 valve; IBUFRJ 19122, (# 37, 2002), 1 valve; IBUFRJ 19123, (# 38, 2002), 1 valve; IBUFRJ 19124, (# 64, 2003), 12 valves and 1 specimen; IBUFRJ 19125, (# 75, 2003), 2 valves; IBUFRJ 19126, (# A7, 2008), 4 specimens; IBUFRJ 19127, (# A7, 2008), 1 valve; IBUFRJ 19128, (# A7, 2008), 1 valve and 3 specimens; IBUFRJ 19129, (# D7, 2008), 1 specimen; IBUFRJ 19130 (# H7, 2008), 2 specimens; IBUFRJ 19131 (# D6, 2008), 3 specimens; IBUFRJ 19132 (# H7, 2008), 1 specimen; IBUFRJ 19133 (# H7, 2008), 4 valves; IBUFRJ 19134 (# D6, 2008), 1 specimen; IBUFRJ 19135 (# I7, 2008), 1 specimen; IBUFRJ 19136 (# A7, 2009), 2 specimens; IBUFRJ 19137 (# A7, 2009), 6 specimens; IBUFRJ 19138 (# D6, 2009), 4 specimens; IBUFRJ 19139 (# H7, 2009), 10 specimens; IBUFRJ 19140 (# CANAC7, 2009), 5 specimens and 2 valves; IBUFRJ 19141(# CANAC7, 2008), 1 specimen; IBUFRJ 19142 (# I7, 2008), 2 specimens; IBUFRJ 19143 (# CANAC7, 2008), 6 specimens; IBUFRJ 19144 (# D7, 2008), 1 specimen.

Diagnosis

Shell minute, ovate. Entire margin slightly thickened. Hinge plate moderately thick. Prodissoconch with web–like striae.

Description

Shell minute, ovate, H/L ratio about 0.78 (n 29, min 0.74, max 0.81), Width of both valves/H ratio about 0.7 (n 11, min 0.67, max 0.77), inequilateral, translucent, glossy; umbones moderately prominent, large, posterior to midline, orthogyrous. Antero–dorsal margin convex and oblique; anterior margin rounded and projected. Antero–ventral margin convex, postero–ventral margin shorter and rising up to short and rounded posterior end; postero–dorsal margin convex, but forming a small shoulder. Entire shell margin slightly thickened. Surface with subtle commarginal growth lines. Hinge plate with 5–7 anterior and 4–5 posterior teeth, interrupted by a shallow rectangular hinge plate. Width of both anterior and posterior row of teeth occupies about 70% of width of hinge plate, which is thick for its size (whp/H approximately 0.14). Posterior part of the hinge plate shorter than anterior one. Prodissoconch surface nacreous, with several radial striae, resembling a spider’s web. Prodissoconch length approximately 246 µm.Maximum adult shell length 1.16 mm. {| class="wikitable" ; style="width: 100%" |+ Table 4. Measurements of the type material. * Width = width of a single valve. |- ! Microgloma nhanduti sp. n. |- ! !! Length !! Height !! Width* |- | MNRJ 19.113 || 1.12 || 0.90 || 0.29 |- | IBUFRJ 14.991 || 1.11 || 0.84 || 0.24 |- | IBUFRJ 14.991 || 1.04 || 0.82 || 0.29 |- | IBUFRJ 14.991 || 1.09 || 0.89 || 0.29 |- | IBUFRJ 19.176 || 1.13 || 0.89 || 0.29 |- | MZSP 99.980 || 1.09 || 0.82 || 0.29 |- | MZSP 99.980 || 1.09 || 0.82 || 0.27 |- | MZSP 99.980 || 0.98 || 0.76 || 0.24 |- | MZSP 99.980 || 1.09 || 0.82 || 0.27 |- | MZSP 99.980 || 1.11 || 0.82 || 0.27 |- | MZSP 99.980 || 1.11 || 0.84 || 0.22 |- | USNM 1156944 || 1.11 || 0.87 || 0.27 |- | USNM 1156944 || 1.11 || 0.87 || 0.29 |- | USNM 1156944 || 0.96 || 0.78 || 0.27 |- | USNM 1156944 || 1.07 || 0.80 || 0.24 |- | USNM 1156944 || 1.11 || 0.89 || 0.27 |- | MNHN 24596 || 1.07 || 0.87 || 0.22 |- | MNHN 24596 || 1.07 || 0.87 || 0.22 |- | MNHN 24596 || 1.09 || 0.80 || 0.22 |}

Remarks

Microgloma nhanduti sp. n. is similar to Microgloma pusilla and Microgloma tumidula in the oval outline. but has more prominent umbones (Figs 26–28). Compared to Microgloma macaron sp. n. and Microgloma yongei, Microgloma nhanduti sp. n. has a more elongated outline, a longer anterior area, and a more evident prodissoconch sculpture, with a web–like pattern (Figs 29–30). In Microgloma nhanduti sp. n. the umbo is not as prominent and the shell margin not as thick as in Microgloma macaron sp. n.Untill now this species is reccorded solely in Campos Basin.

Original Description

  • Benaim, N; Absalão, R; 2011: Microgloma Sanders & Allen, 1973 (Nuculanidae) and Pristigloma Dall, 1900 (Pristiglomidae) (Pelecypoda) in the Campos Basin of Brazil ZooKeys, 152: 1-20. doi

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