Streptocarpus peltatus (Gesneriaceae), a Distinctive New Species from Southeastern Madagascar

A new species of freshwater crab of the genus Hydrothelphusa A Milne-Edwards, 1872, is described based on specimens collected from a forested region of southeastern Madagascar. Hydrothelphusa vencesi n. sp. is clearly distinguished from its congeners by its distinctive first gonopod (G1) with a terminal article that is in the form of a long straight-sided cone, and by a dorsal membrane at the segment junction of G1 that is broad and diamond-shaped. A key is provided to separate the five species of Hydrothelphusa.

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Hildegardia dauphinensis(Malvaceae, Sterculioideae): a new species from southeastern Madagascar

Adansonia ◽

10.5252/a2009n1a8 ◽

2009 ◽

Vol 31 (1) ◽

pp. 143-148

Author(s):

John G. Zaborsky

Keyword(s):

New Species ◽

A New Species ◽

Southeastern Madagascar

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Two New Species of Ardisia (Primulaceae) from Southeastern Madagascar

Novon A Journal for Botanical Nomenclature ◽

10.3417/2019440 ◽

2020 ◽

Vol 28 (1) ◽

pp. 64-73

Author(s):

Nadiah Manjato ◽

Noromalala Ravololomanana ◽

Richard Razakamalala

Keyword(s):

New Species ◽

Iucn Red List ◽

Red List ◽

Identification Key ◽

Distribution Map ◽

Iucn Red List Categories ◽

Risk Of Extinction ◽

Two New Species ◽

Red List Categories ◽

Southeastern Madagascar

Ardisia sharoniae Manjato, Ravololoman.& Razakamal. and A. vohimenensis Manjato, Ravololoman. & Razakamal. (Primulaceae) are described as new species from southeastern Madagascar, the former from the Ankarabolava and Agnakatrika forests (Atsimo-Atsinanana Region) and the latter from the Vohimena range (Anosy Region). They differ from the four currently recognized Malagasy species of Ardisia Sw. by their leaves with serrate margins and their striking angulate twigs. The two new species differ from one another in several characters of their leaves, inflorescences, and fruits. An illustration and a distribution map are provided for each species. Preliminary assessments of the risk of extinction following the IUCN Red List categories and criteria indicate that both are Endangered. An identification key to the seven species of Ardisia occurring in Madagascar is presented.

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A New Species of Putatively Pond Breeding Frog of the Genus Guibemantis from Southeastern Madagascar

Copeia ◽

10.1643/ch-11-128 ◽

2012 ◽

Vol 2012 (4) ◽

pp. 648-662 ◽

Cited By ~ 3

Author(s):

Richard M. Lehtinen ◽

Frank Glaw ◽

Franco Andreone ◽

Maciej Pabijan ◽

Miguel Vences

Keyword(s):

New Species ◽

A New Species ◽

Southeastern Madagascar

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A new species of Ptychochromis from southeastern Madagascar (Teleostei: Cichlidae)

Zootaxa ◽

10.11646/zootaxa.4044.1.4 ◽

2015 ◽

Vol 4044 (1) ◽

pp. 79 ◽

Cited By ~ 5

Author(s):

CHRISTOPHER M. MARTINEZ ◽

JAIRO ARROYAVE ◽

JOHN S. SPARKS

Keyword(s):

New Species ◽

A New Species ◽

Southeastern Madagascar

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Rhagovelia of Madagascar and adjacent Indian Ocean islands (Heteroptera: Veliidae), Part 2: Revision of the tesari species group

Insect Systematics & Evolution ◽

10.1163/1876312x-45012114 ◽

2015 ◽

Vol 46 (2) ◽

pp. 115-220

Author(s):

Dan A. Polhemus ◽

Nils Möller Andersen

Keyword(s):

New Species ◽

Indian Ocean ◽

Morphological Characters ◽

Species Group ◽

Current Paper ◽

Species Status ◽

Distribution Maps ◽

South Central ◽

Full Species ◽

Southeastern Madagascar

Riffle bugs in the genus Rhagovelia have diversified extensively on the island of Madagascar. The current paper defines and segregates a distinct set of species within this endemic assemblage as the tesari species-group, containing the previously described species R. tesari Hoberlandt, R. adrienneaebrasili Poisson, R. hovana Hoberlandt, R. abalienata Hoberlandt, R. tsaratananae Poisson, and R. mohelii Poisson (originally described as a subspecies of R. tesari but here raised to full species status), as well as the following 13 new species described herein: R. aquacola n. sp., R. ambra n. sp., and R. sahabe n. sp. from northern Madagascar; R. mandraka n. sp., R. faratsihoi n. sp., and R. wenzeli n. sp. from central Madagascar; R. enckelli n. sp., R. takona n. sp., R. manga n. sp., R. brincki n. sp., and R. sandoka n. sp. from eastern Madagascar; R. andringitrae n. sp. from south-central Madagascar; and R. mondena n. sp. from southeastern Madagascar. Rhagovelia tesari flavomarginata Hoberlandt 1951 is synonymized under R. adrienneaebrasili Poisson 1945. Figures of key morphological characters, including male parameres are provided for all species, accompanied by distribution maps.

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Morphological, bioacoustical, and genetic variation in Miniopterus bats from eastern Madagascar, with the description of a new species

Zootaxa ◽

10.11646/zootaxa.2880.1.1 ◽

2011 ◽

Vol 2880 (1) ◽

pp. 1 ◽

Cited By ~ 18

Author(s):

STEVEN M. GOODMAN ◽

BEZA RAMASINDRAZANA ◽

CLAUDETTE P. MAMINIRINA ◽

M. CORRIE SCHOEMAN ◽

BELINDA APPLETON

Keyword(s):

Genetic Variation ◽

New Species ◽

Cryptic Species ◽

Sea Level ◽

Molecular Genetic ◽

Morphological Divergence ◽

Far North ◽

Elevational Range ◽

A New Species ◽

Southeastern Madagascar

Recent molecular genetic work, combined with morphological comparisons, of Malagasy members of the bat genus Miniopterus (Family Miniopteridae), has revealed several cryptic species. Based on new specimens and associated tissues, we examine patterns of variation in the recently described species M. petersoni, the holotype of which comes from extreme southeastern Madagascar, and for which specimens from more northerly portions of eastern Madagascar were noted to show some morphological divergence from typical M. petersoni. On the basis of morphological and genetic (cytochrome b) characters we described a new species, M. egeri sp. nov. This taxon also shows bioacoustical differences from M. petersoni. Miniopterus egeri is widely distributed in the eastern portion of Madagascar across an elevational range from near sea level to 550 m. The specific status of moderately small Miniopterus from Montagne d’Ambre in the far north remains to be determined.

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Distribution and ecology of dictyostelids in Madagascar

Phytotaxa ◽

10.11646/phytotaxa.505.2.4 ◽

2021 ◽

Vol 505 (2) ◽

pp. 176-186

Author(s):

JAMES C. CAVENDER ◽

JOHN C. LANDOLT ◽

EDUARDO M. VADELL ◽

ALLISON L. PERRIGO ◽

STEVEN L. STEPHENSON ◽

...

Keyword(s):

Species Richness ◽

New Species ◽

Vegetation Types ◽

Slime Molds ◽

Soil Humus ◽

South Central ◽

The World ◽

Cellular Slime ◽

Distribution And Ecology ◽

Southeastern Madagascar

Samples for isolation of dictyostelid cellular slime molds were obtained from 20 collecting sites at 18 localities in south central and southeastern Madagascar during May 2009. At least thirty species of dictyostelids representing seven genera were recovered from 52 samples of soil/humus. This total included 17 species described as new to science, 13 species already known from various localities throughout the world, and four isolates that remain unidentified. Fourteen of the new species isolated from these samples are members of the whorl-branched, light-spored genus Heterostelium (formerly Polysphondylium). The overall level of species richness of dictyostelids in Madagascar is greater than what is known for all of mainland Africa sampled to date. Levels of biodiversity in Madagascar were higher for mesic than for xeric vegetation types, and each of the newly described species of Heterostelium appeared to have a limited distribution among the localities sampled.

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