Insects unique to Guinea-Bissau include two grasshoppers Parga bissauensis (OSF) and Catantopsilus hintzi (OSF), a tiger beetle Cylindera gulbenkiana (Zootaxa pdf file), a longhorned beetle Pterolophia consimilis (IRD), a leaf beetle Pachnephorus sassii (p. 98 of chrysomelidae.it pdf file), and two dung beetles Caccophilus (or Caccobius) lateralis (Internet Archive) and Onthophagus androgynus (Google Books).
include the wolf spiders Arctosa
Spider Catalog) and Lycosa
Archive), a long-jawed orb weaver Tetragnatha luculenta
a ground spider Zelotes
Spider Catalog), and a pseudoscorpion Paratemnoides
Books). A blind tailless whip
(fig. 2 at BHL)
found in termite nests is the sole member of the endemic family
Vertebrates found only in Guinea-Bissau include a longtail lizard Latastia ornata (p. 14 of BzB pdf file). A reed frog Hyperolius from Bubaque Island (fig. 7 on p. 4 of BzB pdf file) may be an undescribed species.
Vascular plants known solely from Guinea-Bissau include Nesaea santoi (JSTOR) (p. 84 of Univ. Lisboa pdf file) and a screwpine Pandanus guineabissauensis (ACTD) (p. 149 of Univ. Lisboa pdf file). Also sometimes recognized as a distinct species is Hyphaene santoana (JSTOR) which often is considered a synonym of the Doum Palm Hyphaene thebaica (PACSOA).
For more information on the plants and animals of Guinea-Bissau see the Biodiversity Strategy and Action Plan (CBD pdf file).