Top 18 Most Common Insects in Hilo

Grapsus tenuicrustatus is a crab species from the Grapsidae family. The scientific name of the species was first validly published in 1783 by Herbst.

This species shows an evident sexual dimorphism. The strikingly black and yellow females are 5.1–6.4 cm (2–2.5 in) long, including legs, while the brown males reach only about 1.9 cm (0.75 in). In Hawaii they are referred to as Hawaiian garden spiders. In Hawaii, they are known to be quite communal (see picture), with multi-generational specimens living within close quarters, using the same anchor lines for separate webs. On Guam, where Argiope appensa is ubiquitous, it is frequently visited by Argyrodes argentatus, that steals food from the host. Locals there refer to them as banana spiders. Following the introduction of the brown tree snake and the subsequent extinction or near-extinction of many of the island's small birds, spider populations on Guam exploded in response to decreasing predation and competition. Nature writer David Quammen has called Argiope appensa "almost certainly one of the larger species" which were encountered in vast numbers during his research trip to Guam for the book The Song of the Dodo.

Females grow to about 6 - 10 mm long, while males reach a size of 3 - 5 mm. Females have six abdominal spines ending in distinct sharp points. Most have two large white spots on the upper surface of their abdomens, which are otherwise mottled with black, brown, and white patterns.

The asian Tiger Mosquito (Aedes albopictus) has recently (the 1970s) infested every corner of the world through the shipment of used tired, lucky bamboo (Dracaena sanderiana), and other similar products. The asian Tiger Mosquito is known to transmit many deadly diseases that include West Nile Virus.

The wingspan is 24–32 mm for males and 24–34 mm for females. In these small butterflies the males have a mainly blue violet upper face of the wings with the brown edges, while the females have only a small amount of blue colour in the centre of the wings (sexual dimorphism). Both sexes have a thin, long tail in the hindwings and two black spots in the anal angle. The underface of the wings is ocher and adorned with white markings and with a larger white submarginal streak. The underface of each hindwing shows a pair of small black eye-spots beside each tail, with an orange marginal spots at the anal angle.

The black Witch (Ascalapha odorata) is given this spooky name because its part in folklore being associated with misfortune or death. In the novel, The Silence of the Lambs, they were placed in the mouths of the victims of Buffalo Bill. They can be identified with darker colorings and undertones of purple and pink.

Western honey bee（Apis mellifera） is the most common species of honeybee in the world. Among the first domesticated insects, its cultural and economic impact on humanity has been vast and far-reaching, providing honey, wax and its services as a pollinator. Western honey bee faces challenges worldwide, such as colony collapse disorder, and populations are thought to be decreasing.

The pacific giant centipede (Scolopendra subspinipes) is often kept as a pet due to its beautiful appearance. It has a reddish-brown body, which is longer than most human hands. However, they shouldn't be handled because they can deliver a painful bite, which could cause serious swelling. Deaths from these bites are rare though.

Yellow fever mosquito is notorious for spreading many diseases including dengue, zika, and yellow fevers to name a few. Only the females bite and suck blood, which contributes to the production and maturation of her eggs that they prefer to lay in stagnant water. Researchers have tried to reduce their population by genetically modifying the males to reduce the lifespan of offspring.

The monarch butterfly (Danaus plexippus) is the most recognizable butterfly in North America. It is best known for its appearance, but should be better known for the fact that it has a 3000-mile migration that takes the butterfly 4 generations to complete. Their diet is also a natural deterrent for predators, as they eat milkweed, a poison that induces vomiting.