Guam
Two of the birds unique to Guam now survive only as a result of captive breeding: the Guam Rail (iNaturalist) and the Guam Kingfisher (Smithsonian). Three additional endemic birds are recently extinct: the Guam Flycatcher (Guampedia WM) (BHL), the Guam Reed Warbler (Guampedia) (ResearchGate), and the Bridled White-eye (Guampedia).
The Guam
Flying Fox Pteropus
tokudae (ZooKeys)
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 CRI
WM
pdf) and an undescribed goby of the genus Stenogobius (p.
126
of SPREP WM
pdf).
Marine fish known only from Guam include the Pencil Dottyback Lubbockichthys myersi (Native Fish Lab pdf) and the Guam Barred Butterflyfish Roa uejoi (FishBase) (Wiley).
Endemic insects include a butterfly subspecies Hypolimnas octocula marianensis (iNaturalist) (flickr), a leafroller moth Alcina stenotes (Tortricid.net WM), a concealer moth Elaeonoma swezeyi (Smithsonian), a cosmet moth Asymphorodes aporema (BHL), a snout moth Endotricha mariana (fig. 151 at BHL), the bees Lasioglossum saffordi (Smithsonian) and Hylaeus guamensis (GBIF), the flower flies Allograpta longulus (fig. 4 at Bishop Museum WM pdf) and Eumerus guamensis (fig. 8 at Bishop Museum WM pdf), a raspy cricket Niphetogryllacris marianae (p. 5 of Micronesica pdf), a click beetle Alaus guamensis (Smithsonian), a marsh beetle Ypsiloncyphon guamensis (GBIF), a flat bark beetle Propalticus scriptitatus (fig. 4a on p. 17 of Bishop Museum WM pdf), a weevil Jordanthribus guamensis (p. 23 of coleoptera.sakura.ne.jp pdf), a shore bug Saldula guamensis (Smithsonian), a lace bug Berotingis guamensis (Smithsonian), and a plant bug Peritropis guamensis (p. 7 of Bishop Museum WM pdf).
Land snails restricted to Guam include Partula radiolata (iNaturalist)
(flickr),
the extinct Partula
salifana (Femorale
WM),
Omphalotropis elongatula
(fig. 2B at Micronesica
pdf), Himeroconcha
rotula
(Internet
Archive), and
the
endemic genus Ladronellum
(Internet
Archive). Other endemic invertebrates include a sea cucumber Phyrella
mookiei (GBIF),
a wolf spider Pardosa
marchei (BHL),
a harvestman Dibunus
marianae (p. 2 of Bishop
Museum WM pdf), a
centipede Mecistocephalus
ocanus (Internet
Archive),
a millipede Guamobolus
delus (BHL),
an amphipod Hadzia guamensis
(p. 3 of CaveBiology.com
WM
pdf), a shrimp Lysmata
guamensis (Micronesica
pdf), and several crabs: Dynomene
guamensis (GBIF)
(FLMNH),
Harryplax severus
(ZooKeys),
Circulium (or Labuanium) navus
(p. 10 of Raffles
Museum pdf), Calappa karenae
(Raffles
Museum), and Discoplax
michalis (iNaturalist).
The crab Conleyus
defodio (Micronesica
pdf) (FLMNH)
is the sole species in the family Conleyidae.
Guam has about a dozen species of vascular plants known from nowhere
else (ResearchGate
pdf)
including Eugenia
bryanii (flickr)
(GPEPP),
Hedyotis
megalantha (GPEPP)
(flickr),
a
pondweed Potamogeton
marianensis (flickr)
(p. 135 of SPREP WM
pdf), Phyllanthus
mariannensis (flickr)
(PhytoKeys),
Phyllanthus saffordii
(GPEPP)
(flickr),
Psychotria
malaspinae (GBIF)
(p. 8 of BSP
Guam pdf),
Psychotria andersonii
(JSTOR),
Elatostema
stenophyllum (GBIF) (BHL),
Dianella saffordiana
(flickr),
Tinospora homosepala (flickr)
(GPEPP),
Syzygium guamense
(Phytotaxa),
Pogostemon guamensis
(PhytoKeys),
Rhaphidophora guamensis
(Wikimedia
Commons) (BHL),
and a fern Ceratopteris
gaudichaudii (flickr)
(p. 25 of SPREP
WM
pdf).
Endemic
non-vascular plants include the mosses Sematophyllum parvifolium
(GBIF)
and Pachylomidium
pacificum (ResearchGate).
Marine algae known only from Guam include Ramicrusta adjoulanensis
(ResearchGate).
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 WM). For an overview of
Guam's marine
biodiversity see the special issue of Micronesica (Micronesica)
and for a general overview of Guam's biodiversity see the "Guam
Comprehensive Wildlife Conservation Strategy" (SPREP WM
pdf).