Guam
Two of the birds unique to Guam now survive only as a result of captive breeding: the Guam Rail (DDand the Guam Kingfisher Todiramphus cinnamominus cinnamominus (Lincoln Park Zoo), a subspecies of the Micronesian Kingfisher. Three additional endemic birds are recently extinct: the Guam Flycatcher Myiagra freycineti (guamdawr.org), a subspecies of the Rufous Fantail Rhipidura rufifrons uraniae (guamdawr.org), and the Guam Bridled White-eye Zosterops conspicillatus conspicillatus (fws.gov), a subspecies of the Bridled White-eye which has a second subspecies that survives in the Northern Mariana Islands.
The Guam
Flying Fox (Andrew
Isles Bookshop) is also extinct.
Freshwater fish unique to Guam include an undescribed freshwater
sleeper goby of the genus Eleotris
that is a blind cave dweller (p. 6 of Univ.
Guam pdf file) and an undescribed goby of the genus Stenogobius (p. 126
of State
Wildlife Action Plans 6 MB pdf file). The Pencil Dottyback Lubbockichthys myersi
(Native
Fish Lab pdf file) and the Yellow-crowned Butterflyfish Chaetodon flavocoronatus
(eol)
are endemic marine fish.
Land snails restricted to Guam include Partula radiolata (ARKive),
the extinct Partula
salifana (Femorale),
and the endemic genera Ladronellum
(Internet
Archive) and Himeroconcha
(Internet
Archive). Endemic insects include a
katydid Salomona
guamensis (OSF),
a raspy cricket Niphetogryllacris
marianae (p. 5 of Univ.
Guam pdf file), a flat bark beetle Propalticus scriptitatus
(4a on p. 17 of Bishop
Museum 6 MB pdf file), a plant bug Peritropis guamensis
(p. 7 of Bishop
Museum 6 MB pdf file), a leafroller moth Alcina stenotes (Tortricid.net),
and an extinct butterfly Neptis
guamensis (Encyclopedia
of Life). Other endemic vertebrates include a
centipede Mecistocephalus
ocanus (BioStor
pdf file),
a shrimp Axiopsis pica
(FLMNH),
and four crabs: Conleyus
defodio (FLMNH),
Dynomene guamensis
(FLMNH),
Dynomene kroppi
(FLMNH),
and Olenothus uogi
(FLMNH).
Guam has about 20 species of vascular plants known from nowhere else
including Timonius
nitidus (Plants
of Guam), Tinospora
homosepala (flickr),
a grass Dimeria
chloridiformis (Plants
of Guam), Eugenia
bryanii (flickr),
Eugenia costenoblei
(JSTOR),
Hedyotis
megalantha (JSTOR),
Psychotria
malaspinae (JSTOR),
Psychotria andersonii
(p. 108 of Smithsonian
pdf file),
a pondweed Potamogeton
marianensis (p. 135 of State
Wildlife Action Plans 6 MB pdf file), Rhaphidophora guamensis
(CATE
Araceae), Phyllanthus
mariannensis (Pensoft),
Elatostema divaricatum
(JSTOR),
Dianella saffordiana
(Kew),
an orchid Bulbophyllum
guamense (JSTOR),
and a fern Ceratopteris
gaudichaudii (JSTOR). Paipai Guamia
mariannae (Plants
of Guam) is sometimes claimed to be a genus endemic to Guam,
but it is also known from the Northern Mariana Islands.
Guam is a territory of the United
States of America, part of the Marianas Tropical Dry Forests
ecoregion (EoE), and
is included in the Polynesia-Micronesia
biodiversity hotspot (Biodiversity
Hotspots). For an overview of Guam's marine
biodiversity see the special issue of Micronesica (Univ. Guam)
and for a general overview of Guam's biodiversity see the "Guam
Comprehensive Wildlife Conservation Strategy" (State
Wildlife Action Plans 6 MB pdf file).