Flower mantis

File:Mantis Hymenopus coronatus 6 Luc Viatour.jpg

The flower mantises include the orchid mantis, Hymenopus coronatus, which mimics a pink rainforest orchid of southeast Asia.

Flower mantises are those species of praying mantis that mimic flowers. Their coloration is an example of aggressive mimicry, a form of camouflage in which a predator's colours and patterns lure prey. Most species of flower mantis are in the family Hymenopodidae. Their behaviour varies, but typically involves climbing a plant until they reach a suitable flower, and then staying still until a prey insect comes within range. Many of these mantises have deimatic displays to startle or put off potential predators.

Many species of flower mantis are popular as pets.

Behaviour

The jeweled flower mantis, Creobroter gemmatus. Museum specimen showing brightly coloured wings, which are opened suddenly in a deimatic display to startle predators

The orchid mantis, Hymenopus coronatus, of southeast Asia mimics a pink orchid flower. It remains motionless on the flower spike until prey arrive; the same camouflage also protects it from predators. In his 1940 book Adaptive Coloration in Animals, Hugh Cott quotes an account by Nelson Annandale, saying that the mantis hunts on the flowers of the "Straits Rhododendron", Melastoma polyanthum. The nymph has what Cott calls "Special Alluring Coloration" (aggressive mimicry), where the animal itself is the "decoy". The insect is pink and white, with flattened limbs with "that semi-opalescent, semi-crystalline appearance that is caused in flower-petals by a purely structural arrangement of liquid globules or empty cells". The mantis climbs up and down the twigs of the plant until it finds one that has flowers. It holds on to these with the claws of its two rearmost pairs of legs. It then sways from side to side, and soon various small flies land on and around it, attracted by the small black spot on the end of its abdomen which resembles a fly. When a larger dipteran fly, as big as a house fly, landed nearby, the mantis at once seized and ate it. More recently (2015), the orchid mantis's coloration has been shown to be an effective mimic of tropical flowers; and it has been demonstrated to attract pollinators (as if it were a flower) and then to catch them.

Example species

The flower mantises include the following species, many of which are popularly kept as pets:

Flower mantises

Species	Common names	Image	Distribution	Notes
Acromantis formosana	Taiwan flower mantis	-	Taiwan	Nymphs are dark brown, flanged and spined, highly cryptic on dead leaves. Adults have green wings.
Blepharopsis mendica	Small devil's flower mantis Devil's flower mantis Thistle mantis Egyptian flower mantis Arab mantis	150px	North Africa, Canary Islands	Deimatic display with head and thorax rotated to one side.
Chloroharpax modesta	Nigerian flower mantis	150px	West Africa	Adult female has ocellated eyespots on wings. Aggressively hunts prey larger than itself.
Creobroter gemmatus and other species in genus Creobroter	(Flower mantises)	150px	South and Southeast Asia	Fly strongly on long wings. Eyespots on forewings, varying colours. Deimatic display of bright hindwings.
Gongylus gongylodes	Wandering violin mantis Ornate mantis Indian rose mantis	100px	South Asia	Up to 11 cm; males can fly.
Hymenopus coronatus	Orchid mantis Walking flower mantis		Southeast Asia	Hunts flies on "Straits Rhododendron", Melastoma polyanthum.
Idolomantis diabolica	[Giant] devil's flower mantis	150px	Central and East Africa	Large insect, females as much as 13 cm. Brightly coloured deimatic display in red, white, blue, purple and black.
Parymenopus davisoni	Yellow flower mantis, Davison's mantis	150px	Southeast Asia	A slender yellow mantis, the female with three dark spots on the wings.
Pseudoharpax virescens	Gambian spotted-eye flower mantis	150px	East, Central and West Africa	Adult female has eye spots on abdomen.
Pseudocreobotra wahlbergii	Spiny flower mantis Bulls-eye mantis #9 Mantis	150px	South and East Africa	Effective aggressive mimic of flower; can handle prey much larger than itself. Deimatic display with spread wings to show off "number 9" eyespots. Variable coloration.
Pseudocreobotra ocellata	Spiny flower mantis Spiny flower praying mantis African ocellated mantis	150px	West, Central and Southern Africa	Like P. wahlbergii.
Theopropus elegans	Banded flower mantis Asian boxer mantis	150px	Southeast Asia	White stripe on forewings. Colours can vary.

See also

• List of mantis genera and species

Bibliography

• Cott, Hugh B. (1940). Adaptive Coloration in Animals. Methuen, London.
• Gullan, PJ; Cranston, PS (2010). The Insects: An Outline of Entomology. Wiley (4th edition).
• Wickler, Wolfgang (1968). Mimicry in plants and animals. McGraw-Hill, New York.