Kahenera sa mga langaw ang Thereva. Ang Thereva sakop sa kabanay nga Therevidae.

Matang nga nahiubos 

 Thereva affinis
 Thereva albibarba
 Thereva albohirta
 Thereva albopilosa
 Thereva albovittata
 Thereva analis
 Thereva apicalis
 Thereva argenteolanata
 Thereva atra
 Thereva atripes
 Thereva aurantiaca
 Thereva aureomaculata
 Thereva aureoscutellata
 Thereva aurofasciata
 Thereva bakeri
 Thereva bequaerti
 Thereva bicinctella
 Thereva bicolor
 Thereva bilineata
 Thereva binotata
 Thereva biroi
 Thereva brevicornis
 Thereva brunettii
 Thereva brunnea
 Thereva brunninervis
 Thereva callosa
 Thereva canescens
 Thereva capensis
 Thereva caucasica
 Thereva chillaloensis
 Thereva chrysargyra
 Thereva cincta
 Thereva cingulata
 Thereva cinifera
 Thereva circumscripta
 Thereva clamonae
 Thereva claripennis
 Thereva colorado
 Thereva comata
 Thereva concavifrons
 Thereva conformis
 Thereva confusa
 Thereva congoensis
 Thereva conica
 Thereva cordata
 Thereva corinneae
 Thereva corpulenta
 Thereva curta
 Thereva curticornis
 Thereva decipiens
 Thereva dejecta
 Thereva discreta
 Thereva diversa
 Thereva duplicis
 Thereva eggeri
 Thereva egressa
 Thereva elizabethae
 Thereva femoralis
 Thereva fenestrata
 Thereva flavescens
 Thereva flavicauda
 Thereva flavicincta
 Thereva flavicornis
 Thereva flavipennis
 Thereva flavipes
 Thereva flavipilosa
 Thereva flaviventris
 Thereva flavohirta
 Thereva flavolineata
 Thereva flavopilosa
 Thereva foxi
 Thereva frontalis
 Thereva frontosa
 Thereva fucata
 Thereva fucatoides
 Thereva fulva
 Thereva fulvibarba
 Thereva fulvicornis
 Thereva fulvipennis
 Thereva funebris
 Thereva fuscinervis
 Thereva glabra
 Thereva glauca
 Thereva glaucescens
 Thereva globulicornis
 Thereva gomerae
 Thereva graeca
 Thereva grancanariensis
 Thereva grisea
 Thereva grisescens
 Thereva gruenbergi
 Thereva handlirschi
 Thereva hermanni
 Thereva hilarimorpha
 Thereva hinu
 Thereva hirta
 Thereva hirticeps
 Thereva hispanica
 Thereva hyalina
 Thereva hyalipennis
 Thereva inconspicus
 Thereva indica
 Thereva innotata
 Thereva innotatus
 Thereva inornata
 Thereva insularis
 Thereva intermedia
 Thereva ishikariana
 Thereva johnsoni
 Thereva kempi
 Thereva krafti
 Thereva kristinae
 Thereva lanata
 Thereva laufferi
 Thereva leucosoma
 Thereva luteiventris
 Thereva macdunnoughi
 Thereva macedonica
 Thereva macularis
 Thereva maculicornis
 Thereva maculipennis
 Thereva major
 Thereva manchoulensis
 Thereva marginula
 Thereva marmorata
 Thereva microcephala
 Thereva mirabilis
 Thereva misellus
 Thereva monticola
 Thereva natalensis
 Thereva nebulosa
 Thereva neglecta
 Thereva nelsoni
 Thereva neomexicana
 Thereva nervosa
 Thereva nigrifrons
 Thereva nigripilosa
 Thereva nitida
 Thereva nitidifrons
 Thereva nivaria
 Thereva niveipennis
 Thereva nobilitata
 Thereva nova
 Thereva nudifemorata
 Thereva nudotermina
 Thereva obscuripes
 Thereva obtecta
 Thereva occidentalis
 Thereva occulta
 Thereva oculata
 Thereva opaca
 Thereva ordubadica
 Thereva orientalis
 Thereva ornata
 Thereva pallipes
 Thereva panotshinii
 Thereva persequa
 Thereva pilifrons
 Thereva plebeja
 Thereva porrectifrons
 Thereva powelli
 Thereva praecedens
 Thereva praecox
 Thereva pseudoculata
 Thereva punctipennis
 Thereva quinquevittatum
 Thereva reclusa
 Thereva rhomboidalis
 Thereva robusta
 Thereva rossica
 Thereva ruficornis
 Thereva rufiventris
 Thereva rustica
 Thereva satanas
 Thereva schlingeri
 Thereva seminitida
 Thereva semirufa
 Thereva singula
 Thereva smithae
 Thereva sobrina
 Thereva speculiferum
 Thereva spiloptera
 Thereva spinulosa
 Thereva stigmatica
 Thereva strigata
 Thereva strigipes
 Thereva stuckenbergi
 Thereva subfulva
 Thereva subnitida
 Thereva suifenensis
 Thereva teydea
 Thereva tomentosa
 Thereva tricolor
 Thereva tristis
 Thereva tuberculata
 Thereva tuberculifrons
 Thereva turneri
 Thereva unica
 Thereva unicolor
 Thereva ustulata
 Thereva utahensis
 Thereva valida
 Thereva variabilis
 Thereva varians
 Thereva varicincta
 Thereva varipes
 Thereva venosa
 Thereva venusta
 Thereva webbi
 Thereva ziegleri

Ang mga gi basihan niini 

Langaw
Thereva
Thereva