scholarly journals Corrigenda - The Family Triphoridae (Mollusca) from Northern Australia; also Triphoridae from Christmas Island (Indian Ocean)

1958 ◽  
Vol 9 (4) ◽  
pp. 569
Author(s):  
CF Laseron
Keyword(s):  
Indian Ocean ◽  
Northern Australia ◽  
Christmas Island ◽  
The Family

The Family Triphoridae (Mollusca) from Northern Australia; also Triphoridae from Christmas Island (Indian Ocean)

1958 ◽  
Vol 9 (4) ◽  
pp. 569
Author(s):  
CF Laseron
Keyword(s):  
Indian Ocean ◽  
East Coast ◽  
Northern Australia ◽  
Review Of The Literature ◽  
Separate Section ◽  
Christmas Island ◽  
The Family ◽  
The Indian Ocean ◽  
Comprehensive Study

This is the first comprehensive study of the family Triphoridae (Molluscs) from northern Australia, which comprises the Solanderian and Dampierian zoogeographical provinces and, if the Queensland east coast be accepted as a separate province, the Banksian also. In all 101 species, divided into 17 genera, are figured and described, of which 91 species and 11 genera are proposed as new. In a separate section 14 species, divided into 10 genera, from Christmas Island in the Indian Ocean are described and figured, all the species and two genera being proposed as new. The Introduction includes a review of the literature and previous work, details of the proposed classification, and a key to existing genera.

The Families Rissoinidae and Rissoidae (Mollusca) from the Solanderian and Dampierian Zoogeographical Provinces

1956 ◽  
Vol 7 (3) ◽  
pp. 384 ◽  
Author(s):  
CF Laseron
Keyword(s):  
Indian Ocean ◽  
Northern Australia ◽  
Number Of Species ◽  
Christmas Island ◽  
The Indian Ocean

This paper reviews taxonomically the whole, as far as is known, of the families Rissoinidae and Rissoidae (Mollusca) from northern Australia, with the addition of a number of species from Christmas Island in the Indian Ocean. The area covered includes two zoogeographical provinces, the Solanderian and the Dampierian. All species, known or proposed as new, are figured and discussed. In all, 167 species and subspecies belonging to 47 genera are reviewed, of which 131 species and sub-species and 27 genera are proposed as new. Of these, 123 come from the Solanderian Province and 37 from the Dampierian, and 6 Peronian species are now recorded from the Solanderian. Eight species were found common to the Solanderian and Dampierian. Eighteen species are described from Christmas I.

The systematics of land crabs of the genus Gecarcoidea and recognition of a pseudocryptic species, G. humei, from the eastern Indian Ocean (Crustacea : Decapoda : Gecarcinidae)

2017 ◽  
Vol 31 (4) ◽  
pp. 406 ◽  
Author(s):  
Joelle C. Y. Lai ◽  
Hsi-Te Shih ◽  
Peter K. L. Ng
Keyword(s):  
Indian Ocean ◽  
Morphological Characters ◽  
Eastern Indian Ocean ◽  
Valid Species ◽  
West Pacific ◽  
Land Crab ◽  
Christmas Island ◽  
Extant Species ◽  
Land Crabs ◽  
The Family

The gecarcinid genus Gecarcoidea H. Milne Edwards, 1837 is currently represented by two species from the Indo-West Pacific – the widely distributed purple land crab, G. lalandii H. Milne Edwards, 1837, and the red crab endemic to Christmas Island, G. natalis (Pocock, 1889). One species, G. humei (Wood-Mason, 1874), described from the Nicobar Islands, has had a confused taxonomic history, but was treated as a junior synonym of G. lalandii by Türkay (1974) in his revision of the family. In this study, using molecular as well as morphological characters, we show that G. humei is a valid species. Gecarcoidea lalandii and G. humei have distinct non-overlapping distributions throughout much of their range, with G. lalandii occurring in most of South-east Asia and the West Pacific, while G. humei is known only from the eastern Indian Ocean. On Christmas Island, in the eastern Indian Ocean, however, all three species are present. As a result, Christmas Island is the only locality where all extant species of Gecarcoidea are found. The three species can also be separated by differences in live colours and patterns, as well as proportions of the carapace, male abdomen, ambulatory legs and third maxillipeds, and details of the orbits and male first gonopods.

Phylogeny accurately predicts behaviour in Indian Ocean Clitaetra spiders (Araneae:Nephilidae)

2009 ◽  
Vol 23 (3) ◽  
pp. 193 ◽  
Author(s):  
Matjaž Kuntner ◽  
Ingi Agnarsson
Keyword(s):  
South Africa ◽  
Phylogenetic Analysis ◽  
Indian Ocean ◽  
Species Level ◽  
Web Architecture ◽  
Evolutionarily Conserved ◽  
The Family ◽  
Behavioural Biology

Phylogenies are underutilised, powerful predictors of traits in unstudied species. We tested phylogenetic predictions of web-related behaviour in Clitaetra Simon, 1889, an Afro-Indian spider genus of the family Nephilidae. Clitaetra is phylogenetically sister to all other nephilids and thus important for understanding ancestral traits. Behavioural information on Clitaetra has been limited to only C. irenae Kuntner, 2006 from South Africa which constructs ladder webs. A resolved species-level phylogeny unambiguously optimised Clitaetra behavioural biology and predicted web traits in five unstudied species and a uniform intrageneric nephilid web biology. We tested these predictions by studying the ecology and web biology of C. perroti Simon, 1894 on Madagascar and C. episinoides Simon, 1889 on Mayotte. We confirm predicted arboricolous web architecture in these species. The expected ontogenetic allometric transition from orbs in juveniles to elongate ladder webs in adults was statistically significant in C. perroti, whereas marginally not significant in C. episinoides. We demonstrate the persistence of the temporary spiral in finished Clitaetra webs. A morphological and behavioural phylogenetic analysis resulted in unchanged topology and persisting unambiguous behavioural synapomorphies. Our results support the homology of Clitaetra hub reinforcement with the nephilid hub-cup. In Clitaetra, behaviour was highly predictable and remained consistent with new observations. Our results confirm that nephilid web biology is evolutionarily conserved within genera.

Diatoms on the cirri of tropical barnacles

2000 ◽  
Vol 80 (4) ◽  
pp. 737-738 ◽  
Author(s):  
P.R. Bigelow ◽  
C.G. Alexander
Keyword(s):  
Benthic Diatoms ◽  
Rocky Shores ◽  
Balanus Amphitrite ◽  
Northern Australia ◽  
Feeding Efficiency ◽  
The Family

Two species of large extension feeding barnacles are abundant on exposed tropical rocky shores of northern Australia. The cirri of many specimens carry varying numbers of a commensal diatom in some cases with as many as 2000 individuals on a single cirrus. The araphid diatom resembles the genus, Lichmophora within the family Fragilariaceae although no description has yet been published. Species of Lichmophora are common benthic diatoms in these waters as an epiphyte on macroalgae and common primary fouling diatoms on test panels. The diatom reported here has not been found on any substratum other than the barnacles Tetraclita squamosa and Australobalanus imperator, very rarely on Balanus amphitrite. Analysis of the diatom distribution on the cirri shows significantly higher numbers on the posterior captorial cirri. The effect of commensal diatoms on the feeding efficiency of the barnacles is discussed.

scholarly journals A new species of the genus Smacigastes Ivanenko & Defaye, 2004 (Tegastidae, Harpacticoida, Copepoda) from the Onnuri Vent Field in the Indian Ocean

2020 ◽  
Vol 96 (2) ◽  
pp. 699-714
Author(s):  
Jong Guk Kim ◽  
Jimin Lee
Keyword(s):  
New Species ◽  
Indian Ocean ◽  
Hydrothermal Vent ◽  
Hydrothermal Vents ◽  
First Record ◽  
Cold Seeps ◽  
Dichotomous Key ◽  
The Family ◽  
The Indian Ocean ◽  
A New Species

The genus Smacigastes Ivanenko & Defaye, 2004 (Harpacticoida, Copepoda) is the most primitive genus in the family Tegastidae Sars, 1904, occurring in deep-sea chemosynthetic environments, such as hydrothermal vents, cold seeps, whale falls and wood falls. Our exploration of the Onnuri Vent Field, the sixth active hydrothermal vent system in the Central Indian Ridge, resulted in the discovery of a new species in the genus Smacigastes. A detailed morphological analysis of S. pumilasp. nov. reveals that it most resembles S. barti Gollner, Ivanenko & Martínez Arbizu, 2008, described from a hydrothermal vent in the East Pacific Ridge; the new species can be distinguished from the existing species by the 8-segmented female antennule, the absence of an abexopodal seta on the antennary basis, the mandibular exopod represented by a single seta and the exopod of the first leg with five setae. This is the first record of Smacigastes in the Indian Ocean. A dichotomous key to species of the genus Smacigastes worldwide is provided.

Copidothrips octarticulatus recorded from Tahiti, with first description of the male and larvae (Thysanoptera, Thripidae, Panchaetothripinae)

Zootaxa ◽  
2021 ◽  
Vol 4949 (3) ◽  
pp. 591-594
Author(s):  
ARTURO GOLDARAZENA ◽  
BRUNO MICHEL ◽  
FRED JACQ
Keyword(s):  
Host Plants ◽  
New Genus ◽  
Host Record ◽  
Pacific Island ◽  
Northern Australia ◽  
New Genus And Species ◽  
Christmas Island ◽  
The Indian Ocean ◽  
Single Genus ◽  
Unknown Male

Heliothrips (Parthenothrips) octarcticulatus was originally described by Schmutz (1913) from Sri Lanka. Subsequently, Hood (1954) described from Taiwan a new genus and species Copidothrips formosus, and then Stannard and Mitri (1962) described a further new genus and species, Mesostenothrips kraussi, from Kiribati and Gibert Islands. Bhatti (1967, 1990), recognized that only a single genus and species was involved amongst these names, established the resultant synonymies, and recorded the species octarcticulatus from various localities between the Seychelles and five different Pacific Island groups. It has also been recorded from Northern Australia, and Thailand (ThripsWiki 2021) as well as Christmas Island in the Indian Ocean (Mound 2019). Despite these records, there is little reliable information about host plants and biology apart from Piper myristicum on Pohnpei island (Micronesia), and also damage caused to the leaves of Aglaonema and Spathoglottis at Darwin in Australia (Mound & Tree 2020). In this note, we add a further interesting host record and describe the previously unknown male as well as the larvae of this species. 

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