Top 19 Most Common Insects in Dhaka

Bactrocera dorsalis is a fly species from the family of the drill flies (Tephritidae). The scientific name of the species was first validly published in 1912 by Hendel.

The species is on the IUCN Red List as not endangered, year of assessment 2009.

Leucauge decorata, the decorative silver orb spider, is one of the long-jawed orb weaver spiders. A medium to large sized orb weaving spider, with a body length up to 12 mm long (female). Male to 6 mm. This species has a "point" to the end of the abdomen. Found in Africa, India, south east Asia, also to Australia.

Upperside of male and female is black. Forewings and hindwings with a discal broad transverse area from below vein 4 in forewing to vein 2 on hindwing, a moderately large spot in interspace 5, a minute preapical dot beyond in interspace 6 on forewing, and a subterminal row of spots with two or three spots beyond them on the tornal angle of the hindwing, pale yellow, sometimes with an ochraceous, sometimes with a greenish tinge. The discal area on the forewing nearly as broad in interspace 3 as on the dorsum, on the hindwing narrowing to an acute point on vein 2 at two-thirds of its length from base of wing. Tails touched with bluish grey. Underside with the discal transverse area and spot in interspace 5 as on the upperside; base and costal margin of the forewing to apex, and base and dorsal margin of the hindwing broadly lilacine brown, on forewing with two small black spots near base. Bordering the transverse discal area on the inner side, where it is margined with black lines, and above, is a broad chocolate carved band, continued more narrowly along the outer side of the discal area; beyond this on the forewing is a concave series of dusky black lunules, on the hindwing the band itself is traversed by a line of obscure pale lunules; finally on the hindwing there is a subterminal series of internally white-bordered black spots followed by an obscure ochraceous terminal line, and above the tornal angle a slender transverse black line from vein 1 to the dorsal margin. Wingspan 6 - 9 cm. Caterpillar is elongated, slug-shaped, dark green; head large, wide and surmounted by four divergent curved fleshy spinous processes; anal segment with two short naked terminal points; the segments with an oblique yellowish-white lateral stripe, most prominent on the 7th, 9th and 11th segments, and beneath these a lower series of small white spots. Pupa is thick, cylindrically oval; green streaked with white; dorsum and thorax convex; head broad, truncated, obtusely pointed in front.

Delias descombesi, the redspot Jezebel is a medium-sized butterfly of the family Pieridae, that is, the yellows and whites.

The giant Crab Spider is a large spider native to the tropics; the largest reported individual had a leg span of 30 cm. This cosmopolitan spider is highly valued in some areas, as it's able to catch cockroaches and other indoor pests. Reportedly, it hunts even scorpions and bats. This spider is venomous and sometimes bites humans, but it's considered harmless.

Jamides alecto is a butterfly from the Lycaenidae family. The scientific name of the species was first validly published in 1860 by Felder.

Catochrysops panormus, the silver forget-me-not, is a small butterfly found from India to the Philippines and south to Australia that belongs to the lycaenids or blues family. The species was first described by Cajetan Felder in 1860.

Opadometa fastigata, the pear-shaped leucauge, is a species of spiders in the family Tetragnathidae (long-jawed orb weavers). It is found in India to Philippines and Sulawesi. Members of the species have silvery or golden spots on the abdomen. They are elongated spiders with long legs and chelicerae. They are orb web weavers, weaving small orb webs with an open hub and few, wide-set radii and spirals. The webs have no signal line and no retreat. The web is a large horizontally-placed orb structure with a diameter of more than a metre. The entire web is often suspended by several long strands of silk attached to branches and leaves nearby. This species is separated from other Leucauge spiders by its pear-shaped abdomen and its unique fourth leg. In addition to the two rows of curved hairs (characteristic of Leucauge), this leg also has a thick brush of spines which are not present in most other species of Leucauge.

Wet-season brood. Male upperside: white, a greyish-blue shade at base of the wings and along the veins, due to the dark markings on the underside that show through. Forewing: veins black; apex and termen black, the inner margin of that colour extended in an irregular curve from middle of costa to base of terminal third of vein 4, thence continued obliquely outwards to the tornal angle; interspaces 6 and 9 with short narrow greyish-white streaks of the ground colour that stretch into the black apical area but do not reach the margin; a short black subterminal bar between veins 3 and 4 and another, less clearly defined, between veins 1 and 2. Hindwing: veins 4 to 7 with outwardly dilated broad black edgings that coalesce sometimes and form an anterior, irregular, black, terminal margin to the wing. Underside, forewing: white, the veins broadly margined on both sides by dusky black; costal margin broadly and apex suffused with yellow; subterminal black bars between veins 1 and 2, and 3, and 4 as on the upperside but less clearly defined. Hindwing entirely suffused with yellow, the veins diffusely bordered with black; a more or less incomplete, subterminal series of dusky spots in interspaces 1 to 6; more often than not the spot in 5 entirely absent; a conspicuous chrome-yellow spot on the precostal area. Antennae black, obscurely speckled with white; head and thorax bluish grey; abdomen dusky black; beneath: the palpi and abdomen white, the thorax yellow. Female similar to the male but very much darker. Upperside: veins more broadly bordered with black; in many specimens only the following portions of the white ground colour are apparent. Forewing: a broad streak in cell and beyond it a discal series of streaks in interspaces 1 to 6, 9, and 10; the streaks in interspaces 1 and 3 very broadly interrupted by the transverse black bars; that in 6 more or less obsolescent. Hindwing: a broad streak in cell, a discal series of streaks in interspaces 2 to 7, and a posterior more or less obsolescent subterminal series of greyish-white double spots. Underside similar to that of the male only the veins much more broadly margined with diffuse black scaling. Antennae, head, thorax and abdomen as in the male. Dry-season brood. These differ from the wet-season brood as follows: male upperside, forewing: the apical and terminal black areas much restricted; veins concolorous; black subterminal bare less clearly defined; the lower one often obsolete. Hindwing: the black markings on the termen represented by short triangular irrorations (speckles) of black scales at the apices chiefly of the anterior veins. Underside: as in the wet-season, but the yellow much paler and somewhat ochraceous in tint. Female differs less from the wet-season female, but the black markings on both the upper and underside are narrower and less pronounced, and on the latter the yellow suffusion is paler and ochraceous in tint.