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Nymph from Jewel bug.



Jewel bugs are small to medium-sized oval-shaped bugs with a body length averaging at 5 to 20 mm (0.20 to 0.79 in).They can easily be distinguished from stink bugs (Pentatomidae) because the shield-like enlarged last section of their thorax (known as the scutellum, Latin for "little shield") completely covers the abdomen and the wings Despite their resemblance to beetles, jewel bugs are hemipterans or true bugs.The scutellum is an extension of the thorax, unlike the elytra of beetles which are hardened forewings. As such, jewel bugs have four membranous wings underneath the scutellum in contrast to two in beetles. The scutellum in jewel bugs also does not have a division in the middle and thus does not 'split open' when they take flight like in beetles. The heads of jewel bugs are triangular and the antennae have three to five segments.[8] Like all heteropterans, jewel bugs are characterized by a segmented beak-like mouthpart During feeding, jewel bugs inject proteolytic enzymes in their saliva into plants, digesting plant matter into a liquid form which they then suck up. The tarsus has three segments (tarsomeres)Colors


Also known as Metallic shield bug All jewel bugs feed on plants (phytophagous). The eggs are laid in compact clusters. They may be round or barrel-shaped with a lid or a cap at the top (known as the operculum). They also contain a ring of small protuberances near the cap called micropylar processes. They permit the passage of sperm into the egg for fertilization and enable gaseous exchange from within the egg and the outside world for the embryos. The eggs are white or cream colored when freshly laid but can change color as the embryo maturesWhen hatching, the prolarva (the advanced embryo) exit the egg by opening the lid through peristaltic movements and with the help of a T-shaped internal structure in the egg (known as the egg burster). Like all hemipterans, jewel bugs undergo incomplete metamorphosis (hemimetaboly) and do not possess larval and pupal stages. Instead the adults develop from several stages (instars) of nymphs (usually five) through successive moltings (ecdysis). Nymphs resemble the adults except for size and the absence of wings. They can be of different coloration or patterns from adults. Some species are known to exhibit parental care of eggs and nymphs.

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1 Comment

Pradeep Kumar
Pradeep Kumar 8 years ago

Beautiful spotting and nice description. .

Spotted by

Dumaguete, Central Visayas, Philippines

Spotted on May 29, 2016
Submitted on May 29, 2016

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