Opopaea is a genus of goblin spiders of the family Oonopidae. The genus is one of the largest within the family, with 180 accepted species.
Spiders of the genus are very small, less than 2 mm long. They are usually a reddish-brown color. They have six eyes: four posterior in a straight row, and two anterior.
Opopaea aculeata Baehr & Harvey, 2013 — Western Australia
Opopaea acuminata Baehr, 2013 — New South Wales
Opopaea addsae Baehr & Harvey, 2013 — New South Wales
Opopaea alje Saaristo & Marusik, 2008 — Tanzania
Opopaea ameyi Baehr, 2013 — Queensland
Opopaea amieu Baehr, 2013 — New Caledonia
Opopaea andranomay Andriamalala & Hormiga, 2013 — Madagascar
Opopaea andringitra Andriamalala & Hormiga, 2013 — Madagascar
Opopaea ankarafantsika Andriamalala & Hormiga, 2013 — Madagascar
Opopaea ankarana Andriamalala & Hormiga, 2013 — Madagascar
Opopaea antoniae Baehr, 2013 — Queensland, New South Wales
Opopaea antsalova Andriamalala & Hormiga, 2013 — Madagascar
Opopaea antsiranana Andriamalala & Hormiga, 2013 — Madagascar
Opopaea apicalis (Simon, 1893) — Pantropical
Opopaea aurantiaca Baehr & Harvey, 2013 — Western Australia
Opopaea auriforma Tong & Li, 2013 — China
Opopaea banksi (Hickman, 1950) — Australia
Opopaea batanguena Barrion & Litsinger, 1995 — Philippines
Opopaea bemaraha Andriamalala & Hormiga, 2013 — Madagascar
Opopaea bemarivo Andriamalala & Hormiga, 2013 — Madagascar
Opopaea berenty Andriamalala & Hormiga, 2013 — Madagascar
Opopaea berlandi (Simon & Fage, 1922) — East Africa
Opopaea betioky Andriamalala & Hormiga, 2013 — Madagascar
Opopaea bicolor Baehr, 2013 — New Caledonia
Opopaea billroth Baehr & Harvey, 2013 — Western Australia
Opopaea botswana Saaristo & Marusik, 2008 — Botswana
Opopaea brisbanensis Baehr, 2013 — Queensland
Opopaea broadwater Baehr, 2013 — Queensland, Australia
Opopaea burwelli Baehr, 2013 — New Caledonia
Opopaea bushblitz Baehr, 2013 — New South Wales
Opopaea calcaris Baehr, 2013 — New Caledonia
Opopaea callani Baehr & Harvey, 2013 — Western Australia
Opopaea calona Chickering, 1969 — USA
Opopaea carnarvon Baehr, 2013 — Queensland
Opopaea carteri Baehr, 2013 — Queensland
Opopaea chrisconwayi Baehr & Harvey, 2013 — Queensland
Opopaea concolor (Blackwall, 1859) — Pantropical
Opopaea conujaingensis (Xu, 1986) — China
Opopaea cornuta Yin & Wang, 1984 — China
Opopaea cowra Baehr & Harvey, 2013 — Western Australia
Opopaea deserticola Simon, 1891 — Pantropical
Opopaea diaolaushan Tong & Li, 2010 — China
Opopaea douglasi Baehr, 2013 — Queensland
Opopaea durranti Baehr & Harvey, 2013 — Western Australia
Opopaea ectognophus Harvey & Edward, 2007 — Western Australia
Opopaea ephemera Baehr, 2013 — Northern Territory
Opopaea euphorbicola Strand, 1909 — Ascension Islands
Opopaea exoculata Baehr & Harvey, 2013 — Western Australia
Opopaea fiji Baehr, 2013 — Fiji
Opopaea fishriver Baehr, 2013 — Northern Territory
Opopaea flabellata Tong & Li, 2013 — China
Opopaea flava Baehr & Harvey, 2013 — Western Australia
Opopaea floridana (Banks, 1896) — USA
Opopaea foulpointe Andriamalala & Hormiga, 2013 — Madagascar
Opopaea foveolata Roewer, 1963 — Pacific
Opopaea fragilis Baehr & Harvey, 2013 — Western Australia
Opopaea framenaui Baehr & Harvey, 2013 — Western Australia
Opopaea furcula Baehr & Harvey, 2013 — China
Opopaea gabon Saaristo & Marusik, 2008 — Gabon
Opopaea gaborone Saaristo & Marusik, 2008 — Botswana
Opopaea gerstmeieri Baehr, 2013 — New South Wales
Opopaea gibbifera Tong & Li, 2008 — China
Opopaea gilliesi Baehr, 2013 — Northern Territory
Opopaea goloboffi Baehr, 2013 — New Caledonia
Opopaea gracilis Baehr & Harvey, 2013 — Western Australia
Opopaea gracillima Baehr & Harvey, 2013 — Western Australia
Opopaea harmsi Baehr & Harvey, 2013 — Western Australia
Opopaea hawaii Baehr, 2013 — Hawaii
Opopaea hoplites (Berland, 1914) — East Africa
Opopaea ita Ott, 2003 — Brazil
Opopaea itampolo riamalala & Hormiga, 2013 — Madagascar
Opopaea johannae Baehr & Harvey, 2013 — Western Australia
Opopaea johardingae Baehr, 2013 — Northern Territory
Opopaea jonesae Baehr, 2013 — Queensland
Opopaea julianneae Baehr & Ott, 2013 — Western Australia
Opopaea kirindy Andriamalala & Hormiga, 2013 — Madagascar
Opopaea kulczynskii (Berland, 1914) — East Africa
Opopaea lambkinae Baehr, 2013 — Queensland
Opopaea lebretoni Baehr, 2013 — New South Wales
Opopaea leica Baehr, 2013 — Queensland
Opopaea leichhardti Baehr, 2013 — Queensland
Opopaea lemniscata Tong & Li, 2013 — Laos
Opopaea linea Baehr, 2013 — Queensland, New South Wales
Opopaea lingua Saaristo, 2007 — Israel
Opopaea macula Tong & Li, 2013 — China
Opopaea magna Baehr, 2013 — New South Wales
Opopaea mahafaly Andriamalala & Hormiga, 2013 — Madagascar
Opopaea manderano Andriamalala & Hormiga, 2013 — Madagascar
Opopaea manongarivo Andriamalala & Hormiga, 2013 — Madagascar
Opopaea marangaroo Baehr & Harvey, 2013 — Western Australia
Opopaea margaretehoffmannae Baehr & Smith, 2013 — New South Wales
Opopaea margaritae (Denis, 1947) — Egypt
Opopaea maroantsetra Andriamalala & Hormiga, 2013 — Comoro Islands
Opopaea martini Baehr, 2013 — New South Wales
Opopaea mattica Simon, 1893 — Gabon, South Africa
Opopaea mcleani Baehr, 2013 — Queensland
Opopaea media Song & Xu, 1984 — China
Opopaea meditata Gertsch & Davis, 1936 — USA
Opopaea michaeli Baehr & Smith, 2013 — New South Wales
Opopaea millbrook Baehr, 2013 — South Australia
Opopaea milledgei Baehr, 2013 — New South Wales
Opopaea millstream Baehr & Harvey, 2013 — Western Australia
Opopaea mollis (Simon, 1907) — Sri Lanka
Opopaea monteithi Baehr, 2013 — New Caledonia
Opopaea mundy Baehr, 2013 — South Australia
Opopaea nadineae Baehr & Harvey, 2013 — Western Australia
Opopaea namoroka Andriamalala & Hormiga, 2013 — Madagascar
Opopaea ndoua Baehr, 2013 — New Caledonia
Opopaea nibasa Saaristo & van Harten, 2006 — Yemen
Opopaea nitens Baehr, 2013 — New South Wales
Opopaea olivernashi Baehr, 2011 — Queensland
Opopaea ottoi Baehr, 2013 — New South Wales
Opopaea palau Baehr, 2013 — Palau
Opopaea pallida Baehr & Harvey, 2013 — Western Australia
Opopaea pannawonica Baehr & Ott, 2013 — Western Australia
Opopaea phineus Harvey & Edward, 2007 — Western Australia
Opopaea pilbara Baehr & Ott, 2013 — Western Australia
Opopaea plana Baehr, 2013 — New South Wales
Opopaea platnicki Baehr, 2013 — New Caledonia
Opopaea plumula Yin & Wang, 1984 — China
Opopaea preecei Baehr, 2013 — Northern Territory
Opopaea probosciella Saaristo, 2001 — Seychelles
Opopaea proserpine Baehr, 2013 — Queensland
Opopaea punctata (O. P.-Cambridge, 1872) — Lebanon, Israel, other records doubtful
Opopaea raveni Baehr, 2013 — New Caledonia
Opopaea rigidula Tong & Li, 2013 — China
Opopaea rixi Baehr & Harvey, 2013 — Western Australia
Opopaea robusta Baehr & Harvey, 2013 — Western Australia
Opopaea rogerkitchingi Baehr, 2011 — Queensland
Opopaea rugosa Baehr & Ott, 2013 — Western Australia
Opopaea saaristoi Wunderlich, 2011 — Cyprus
Opopaea sallami Saaristo & van Harten, 2006 — Yemen
Opopaea sanaa Saaristo & van Harten, 2006 — Yemen
Opopaea sandranantitra Andriamalala & Hormiga, 2013 — Madagascar
Opopaea santschii Brignoli, 1974 — Tunisia, Cyprus, Egypt, Israel
Opopaea sanya Tong & Li, 2010 — China
Opopaea sauteri Brignoli, 1974 — Taiwan
Opopaea sedata Gertsch & Mulaik, 1940 — USA
Opopaea semilunata Tong & Li, 2013 — China
Opopaea shanasi Saaristo, 2007 — Israel
Opopaea silhouettei (Benoit, 1979) — Seychelles, Rapa Nui
Opopaea simoni (Berland, 1914) — East Africa
Opopaea simplex Baehr, 2013 — New South Wales
Opopaea sown Baehr, 2013 — Queensland, New South Wales
Opopaea speciosa (Lawrence, 1952) — South Africa, Yemen
Opopaea speighti Baehr, 2013 — Queensland
Opopaea spinosa Saaristo & van Harten, 2006 — Yemen
Opopaea sponsa Brignoli, 1978 — Bhutan
Opopaea stanisici Baehr, 2013 — Queensland
Opopaea stevensi Baehr, 2013 — South Australia
Opopaea striata Baehr, 2013 — New Caledonia
Opopaea sturt Baehr, 2013 — Ne South Wales
Opopaea subtilis Baehr & Harvey, 2013 — Western Australia
Opopaea sudan Saaristo & Marusik, 2008 — Sudan
Opopaea suelewisae Baehr & Smith, 2013 — New South Wales
Opopaea suspecta Saaristo, 2002 — Seychelles
Opopaea syarakui (Komatsu, 1967) — Japan
Opopaea sylvestrella Baehr & Smith, 2013 — New South Wales
Opopaea tenuis Baehr, 2013 — New South Wales
Opopaea torotorofotsy Andriamalala & Hormiga, 2013 — Madagascar
Opopaea touho Baehr, 2013 — New Caledonia
Opopaea triangularis Baehr & Harvey, 2013 — Western Australia
Opopaea tsimaloto Andriamalala & Hormiga, 2013 — Madagascar
Opopaea tsimembo Andriamalala & Hormiga, 2013 — Madagascar
Opopaea tsingy Andriamalala & Hormiga, 2013 — Madagascar
Opopaea tsijoriaky Andriamalala & Hormiga, 2013 — Madagascar
Opopaea tuberculata Baehr, 2013 — New Caledonia
Opopaea tumida Tong & Li, 2013 — Laos
Opopaea ulrichi Baehr, 2013 — Queensland
Opopaea ursulae Baehr, 2013 — New South Wales
Opopaea viamao Ott, 2003 — Brazil
Opopaea vitrispina Tong & Li, 2010 — China
Opopaea vohibazaha Andriamalala & Hormiga, 2013 — Madagascar
Opopaea wheelarra Baehr & Ott, 2013 — Western Australia
Opopaea whim Baehr & Harvey, 2013 — Western Australia
Opopaea wongalara Baehr, 2013 — Northern Territory
Opopaea yorki Baehr, 2013 — New South Wales
Opopaea yukii Baehr, 2013 — Queensland
Opopaea zhengi Tong & Li, 2013 — China