Wild PassionfruitInsects of the Wild Passionfruit

The Wild Passionfruit (also commonly known as the Caper Bush), includes the Capparis spinosa var. nummularia, and as well as being a popular bush food for humans, is also enjoyed by a range of creatures including insects.

A number of insects have been seen on the caper bush, whether they were just resting, looking for other insects as food, or actually eating the caper bush itself (some insects eating the leaves or fruit, whilst others consume the pollen or nectar).

There are two insects that are often seen on the caper bush, one being black ants, especially when the fruit is ripe.

Caper Bush (Capparis spinosa var. nummularia), Olive Pink Botanic Garden
Black ants on the mature fruit of the Wild Passionfruit (Capparis spinosa var. nummularia) © Ausemade PL

In the following images, we had observed some brown ants appearing to be surveying the eggs of the Caper White Butterfly (Belenois java teutonia) that had been laid on the caper bush.

An insect you will often see flying around the caper bush, sometimes in large numbers, and being the preferred plant, is the Caper White Butterfly (Belenois java teutonia). In particular they like to lay their eggs on the plant, as it provides food for their caterpillars.

Caper White Butterfly (Belenois java teutonia) laying their eggs on the Caper Bush (Capparis spinosa var. nummularia)
Caper White Butterfly (Belenois java teutonia) laying their eggs on the Caper Bush © Ausemade PL

You may occasionally see male butterflies of the species, trying to mate with the female on the caper bush. This often happens, as the males hang around the chrysalis for the new females to emerge, as seen here.

Caper White Butterfly (Belenois java teutonia), Ellery Creek Big Hole, NT
Male Caper White Butterflies (Belenois java teutonia) mating with the newly emerged females.

The eggs of the Caper White Butterfly are a cream white colour when they are first laid. This changes to a yellow yolk colour as the egg matures, from which the first instar of the caterpillar emerges.

Eggs of the Caper White Butterfly (Belenois java teutonia), Alice Springs, NT
Recently laid eggs of the Caper White Butterfly (Belenois java teutonia) © Ausemade PL
Mature eggs of the Caper White Butterfly (Belenois java teutonia), Alice Springs, NT
Mature eggs of the Caper White Butterfly (Belenois java teutonia), Alice Springs, NT © Ausemade PL

In the following image a blow fly appears to be checking out the eggs of the Caper White Butterfly (Belenois java teutonia) on the Caper Bush (Capparis spinosa var. nummularia).

Blow fly checking out the eggs of the Caper White Butterfly (Belenois java teutonia) on Caper Bush (Capparis spinosa v
Blow fly on Caper Bush, checking out the eggs of the Caper White Butterfly. Photo by Jan Martin

A variety of flies species appear to enjoy being on the caper bush, from the fruit fly to the blow flies. The following is thought to be a fruit fly belonging to the family Tephritidae. It has been suggested that the species is the Bull Thistle Gall Fly (Urophora stylata).

Fruit fly (family Tephritidae) on Caper Bush (Capparis spinosa var. nummularia), Alice Springs, NT
Fruit fly (family Tephritidae) on Caper Bush (Capparis spinosa var. nummularia). Photo by Jan Martin

With about 30,000 species of flies, the majority of flies are good. Although we know some flies are bad. They are of course important to the ecosystem, with many fly species being decomposers of organic and dead organic matter. Flies also are food for many other living creatures such as spiders.

Blow fly on Caper Bush (Capparis spinosa var. nummularia), Alice Springs, NT
Blow fly on Caper Bush (Capparis spinosa var. nummularia), Alice Springs NT. Photo by Jan Martin

The blow flies here appear to be enjoying the caper fruit. It is suggested these flies belong to the genus Chrysomya.

Blow flies on ripe fruit of the Caper Bush (Capparis spinosa var. nummularia), Alice Springs, NT
Blow flies on ripe fruit of the Caper Bush (Capparis spinosa var. nummularia). Photo by Jan Martin

Following is a Giant Grasshopper nymph (Valanga irregularis). 1st and 2nd photos show it is on the Caper Bush (Capparis spinosa var. nummularia). 3rd photo for further ID clarification.

An interesting evolution is to see the different instar stages that the caterpillar moults through.

Egg and instar of the Belenois java teutonia, Alice Springs NT
Egg and emerging instar of the Belenois java teutonia, Alice Springs NT © Jacqueline Arnold

It is amazing sometimes to witness that the Caper White Butterflies favour one bush over another bush of the same species. We have seen two caper bush in close proximity of each other, yet the Caper White seem to prefer one bush over another. This often includes laying of multiple generation of eggs (whether by the same butterfly or other butterflies of the species).

Caterpillars (instar stage) of the Caper White Butterfly (Belenois java teutonia) on Caper Bush (Capparis spinosa var. nummularia), Alice Springs, NT
Caterpillars (instar stage) of the Caper White Butterfly (Belenois java teutonia). Photo by Jan Martin
Caterpillars (instar stage) of the Caper White Butterfly (Belenois java teutonia) on Caper Bush (Capparis spinosa var. nummularia), Alice Springs, NT
Caterpillars (instar stage) of the Caper White Butterfly (Belenois java teutonia). Photo by Jan Martin

Following you can see the moulting between the instar stage of the Caper White caterpillar.

The following photo, you can just see the face moult as it drops away from the top of the Caper White caterpillar (instar) and the rest of the skin at the tail end.

Belenois java teutonia instar caterpillar, Alice Springs, NT
Moulting Belenois java teutonia instar caterpillar.

Instar of the Caper White Butterfly on the shell husk of the fruit of the Caper Bush (Capparis spinosa var. nummularia).

Here you can see a praying mantis ootheca on the caper bush, along with the instars of the Caper White Butterfly.

Belenois java teutonia instars and developing chrysalis on an ootheca (family Mantidae) of a mantis species
Belenois java teutonia instars and developing chrysalis on an ootheca (family Mantidae) of a mantis species.

The caterpillars go through their instar stages, before the final stage of the pupa / chrysalis, then finally emerging as the butterfly.

Caper White Butterfly emerging from a chrysalis (Belenois java teutonia), Ellery Creek Big Hole, NT
Caper White Butterfly emerging from a chrysalis (Belenois java teutonia), Ellery Creek Big Hole, NT
Caper White Butterfly (Belenois java teutonia), Ellery Creek Big Hole, NT
Newly emerged Caper White Butterfly (Belenois java teutonia), Ellery Creek Big Hole, NT

Sadly not all Caper White butterflies are successful in their metamorphosis, with this one dead, half emerged in the chrysalis.

Failed metamorphosis of the Belenois java teutonia on the Caper Bush (Capparis spinosa var. nummularia), Alice Springs, NT
Failed metamorphosis of the Belenois java teutonia on the Caper Bush (Capparis spinosa var. nummularia)

Whilst an mature bush can usually survive the first generation of caterpillars, it is when there are subsequent generations that hatch from more eggs laid by other Caper White Butterflies, that sometimes may result in the death of the plant.

The following photo depicted the caterpillars, instars and the cases of the species Belenois java teutonia on a Caper Bush (Capparis spinosa var. nummularia) having eaten most of the leaves.

Caterpillars, instars and their cases of the Caper White Butterfly (Belenois java teutonia) on a Caper Bush (Capparis spinosa var. nummularia) denuded of leaves.
Caterpillars, instars and their cases of the Caper White Butterfly on a Caper Bush denuded of leaves.

  • Scientific classification
  • Kingdom: Animalia
  • Phylum: Arthropoda
  • Class: Insecta
  • Order: Lepidoptera
  • Family: Pieridae
  • Genus: Belenois
  • Species: Belenois java
  • Subspecies: Belenois java teutonia

  • Scientific classification
  • Kingdom: Animalia
  • Phylum: Arthropoda
  • Class: Insecta
  • Order: Diptera
  • Section: Schizophora
  • Subsection: Acalyptratae
  • Superfamily: Tephritoidea
  • Family: Tephritidae
  • Subfamily: Tephritinae
  • Tribe: Myopitini
  • Genus: Urophora
  • Species: Urophora stylata

  • Scientific classification
  • Kingdom: Animalia
  • Phylum: Arthropoda
  • Class: Insecta
  • Order: Diptera
  • Family: Calliphoridae
  • Subfamily: Chrysomyinae
  • Genus: Chrysomya
Wild Passionfruit (Capparis spinosa var. nummularia)
Flower of the Wild Passionfruit (Capparis spinosa var. nummularia)

Footnote & References

  1. Photos contribution by Jan Martin.
  2. Photo contribution by Jacqueline Arnold
  3. Thanks for ID by members of Australia – What Bug Is This? Facebook group, https://www.facebook.com/groups/Auswhatbugisthis/

Wild PassionfruitInsects of the Wild Passionfruit

FloraFlora in Australia Flora Index Acacia Anigozanthos (Kangaroo Paws) Annual Yellowtop Apium prostratum subsp. prostratum var filiforme Apple Bush (Pterocaulon sphacelatum) Australian Bluebell Australian Gossypium Banksia Batswing Coral Tree Billy Buttons Birdsville Indigo Blue Pincushion Bush Banana Callistemon Callitris drummondii (Drummond’s Cypress Pine) Calothamnus quadrifidus Cape Honeysuckle Cassia fistula (Golden Shower) Cattle Bush Common Heath Crotalaria Darwinia wittwerorum (Wittwer’s Mountain Bell) Daviesia oppositifolia (Rattle-pea) Desert Oaks Drumsticks Eremophila Eucalyptus Ficus Flannel Cudweed (Actinobole uliginosum) Georges Indigo Goatshead Burr (Sclerolaena bicornis) Golden Everlasting Goodenia Gossypium Grass and Grasses Grass Trees Grevillea Grey Germander Hakea Kapok Bush (Aerva javanica) Lambertia sp Leptospermum MacDonnell Ranges Cycad Maireana scleroptera Mexican Poppy Minnie Daisy Mistletoe Family Nardoo Native Apricot Nicotiana megalosiphon subspecies sessilifolia Nuytsia floribunda Orange Spade Flower Orchidaceae Parakeelyas (Calandrinia) Pebble Bush (Stylobasium spathulatum) Perennial Yellow Top Pink Everlasting Pink Rock Wort Poached Egg Daisy Portulaca Proteaceae Ptilotus Quandong Resurrection Fern Rosy Dock Ruby Saltbush Santalum Solanum Spike Centaury Spinifex Storkbill (Erodum cygnorum) Striped Mint Bush Sturt’s Desert Pea Sturt’s Desert Rose Tall Saltbush Tangled Leschenaultia Tar Vine Tribulus eichlerianus Upside-down Plant Urodon dasyphylla Variable Daisy Waratah (Telopea) Wertabona Daisy White Cedar (Melia azedarach) White Indigo White Paper Daisy Wild Passionfruit Wild Stock Woolly-Headed Burr Daisy Woolly Bush Yellow-keeled Swainsona