''Venturia'' is a genus of parasitoid

wasps A wasp is any insect of the narrow-waisted suborder Apocrita of the order Hymenoptera which is neither a bee nor an ant; this excludes the broad-waisted sawflies (Symphyta), which look somewhat like wasps, but are in a separate suborder. Th ...

belonging to the family

Ichneumonidae The Ichneumonidae, also known as ichneumon wasps, ichneumonid wasps, ichneumonids, or Darwin wasps, are a family of parasitoid wasps of the insect order Hymenoptera. They are one of the most diverse groups within the Hymenoptera with roughly 25 ...

. The genus has

cosmopolitan distribution In biogeography, a cosmopolitan distribution is the range of a taxon that extends across most or all of the surface of the Earth, in appropriate habitats; most cosmopolitan species are known to be highly adaptable to a range of climatic and en ...

. Among the species in the genus are: * '' Venturia ahlensis'' Maheshwary, 1977 * '' Venturia altia'' (Morley, 1913) * '' Venturia canescens'' (Gravenhorst, 1829)

Parthenogenetic reproduction

''Venturia canescens'' can produce

haploid Ploidy () is the number of complete sets of chromosomes in a cell (biology), cell, and hence the number of possible alleles for Autosome, autosomal and Pseudoautosomal region, pseudoautosomal genes. Here ''sets of chromosomes'' refers to the num ...

males from unfertilized eggs (

arrhenotoky Arrhenotoky (from Greek ἄρρην ''árrhēn'' "male" and τόκος ''tókos'' "birth"), also known as arrhenotokous parthenogenesis, is a form of parthenogenesis in which unfertilized eggs develop into males. In most cases, parthenogenesis pro ...

), a form of

parthenogenesis Parthenogenesis (; from the Greek + ) is a natural form of asexual reproduction in which the embryo develops directly from an egg without need for fertilization. In animals, parthenogenesis means the development of an embryo from an unfertiliz ...

.Beukeboom LW, Pijnacker LP. Automictic parthenogenesis in the parasitoid Venturia canescens (Hymenoptera: Ichneumonidae) revisited. Genome. 2000 Dec;43(6):939-44. doi: 10.1139/g00-061. PMID: 11195346 Females may also produce diploid female offspring by

thelytoky Thelytoky (from the Ancient Greek, Greek θῆλυς ''thēlys'' "female" and τόκος ''tókos'' "birth") is a type of parthenogenesis and is the absence of mating and subsequent production of all female diploid offspring as for example in aph ...

, a type of parthenogenesis that involves the production of female progeny in the absence of mating.

References

{{Taxonbar, from=Q20974264 Ichneumonidae Ichneumonidae genera