Top 20 Most Common Insects in Ho Chi Minh City

Wet-season form: Upperside greyish brown. Forewing with the usual comparatively large, bi-pupilled, yellow-ringed, black preapical ocellus. Hindwing usually with two, sometimes with three, very rarely without any, smaller similar uni-pupilled postdiscal ocelli. Underside greyish white, not very densely covered with transverse short brown striae. Forewing with the preapical ocellus as on the upperside, obscure discal and subterminal dull brown transverse fasciae and a narrow brown ring round the ocellus diffusely produced posteriorly. Hindwing with one apical and typically three postdiscal posterior ocelli placed in a curve; traces of transverse brown discal and subterminal fasciae in most specimens. Antenna, head, thorax and abdomen greyish brown, the abdomen paler beneath. Male without secondary sex-mark. Dry-season form: Similar, somewhat paler on both upper and under sides; the discal and subterminal transverse fasciae more pronounced; the ocelli on the underside of the hindwing minute or absent. Adults have a wingspan of 4 - 4.5 cm.

Male upperside black with the following white streaks and spots. Forewing cell with a small spot at base followed by three obliquely transverse streaks in middle, none extended to either the subcostal or median veins, and two spots near apex; single slender narrow streaks in interspaces la and 2, and two streaks in interspace 1; above these a spot at base followed by a streak in each of the interspaces 3, 4, 6 and 8, an outer spot only in interspace 5, and a basal spot in interspace 7; finally, a complete series of small subterminal spots. Hindwing: a streak in cell with a spot above its outer apex; a streak followed by a spot in each of the interspaces 1, 6 and 7; three elongate spots in interspaces 2 and 3 and two in interspaces 4 and 5; finally, a series of four slender subterminal lunules in interspaces 2 to 5. Underside similar, with similar but slightly broader markings. Female similar, ground colour duller, more fuliginous black; markings similar, on the forewing slightly broader, on the hindwing slightly narrower, than in the male.

Female black-and-white spiny spider are 6 - 9 mm wide and possess a hard, shiny abdomen armed with six black conical spines. The upper surface of the abdomen is white to yellowish with variable black or dark brown markings and sigilla. Males are much smaller at 3 - 4 mm and in place of spines have small bumps on their abdomens.

Physocyclus globosus, sometimes known as the short-bodied cellar spider is a species of spider belonging to the family Pholcidae. This is a cosmopolitan species, found in caves and buildings throughout the warmer parts of the world.

Spotted-wing drosophila is a pest insect that causes significant damage to fruit crops like grapes, strawberries, and cherries (hence the common name). It lays eggs in the fruit, contaminating them and introducing bacteria. This fast-breeding, short-lived pest can produce three generations during a single fruit season.

The larvae are black, with two rows of dorsal white spots. Head with a pair of branched spines; rest of the segments with a dorsal and a lateral row of blue branched spines on each side. The pupae are yellowish with numerous black spots; constricted in the middle; head produced into two points. Male's and female's underside yellowish brown, paling anteriorly to rich golden yellow on the forewing, shading anteriorly into dusky brown on the hindwing. Forewing: the apical half black, following a line from vein 12 opposite the discocellulars, passing through apex of cell, obliquely across middle of interspace 3 and curving down to tornus; a black spot near apex of cell coalescing with the inner margin of 1he black colour; a short, very oblique, broad golden-yellow band, broader in the female than in the male, from middle of costal margin to interspace 5; a spot beyond in line with it in interspace 4; two, sometimes three, minute, preapical white specks; the cilia fulvous (tawny), touched with white, anteriorly. Hindwing uniform; the costal margin broadly as noted above, a subterminal narrow band and narrower terminal line posteriorly, dusky black; a postdiscal black spot in interspaces 2 and 5 respectively; the cilia fulvous. The ground colour varies from reddish to dark greenish brown with irrorations (speckles) of greyish and black scales; apex of the forewing and the terminal margin posteriorly of the hindwing more or less lilacine; forewings and hindwings crossed by a dark narrow discal fascia, generally bordered on the inner side by a greyish line; this fascia bent inwards at right angles above vein 6 of the forewing and in most specimens, bordered internally by a diffuse pale patch and externally by an oblique whitish mark, beyond which is a subcostal white spot, followed by a transverse sinuous postdiscal series of obscure ocelli crossing both wings, each ocellus centred by a minute dot, white on the fore, black on the hindwing. In the male there are generally, but not invariably, a number of whitish spots on the basal areas of both wings. Antennae blackish brown, ochraceous at apex; head, thorax and abdomen dark fulvous brown; beneath, the palpi white, the thorax and abdomen pale brown. Wingspan is about 8 - 9 cm.

Its wingspan is about 84–104 mm. Head and thorax reddish chestnut in colour, where the third joint of palpi black. Abdomen crimson. Forewings reddish chestnut, slightly irrorated with dark scales. There are traces of a sinuous antemedial line with three specks on it. Reniform greyish, where the lower part more or less completely filled in with black. A curved postmedial series of white specks with an indistinct band beyond it angled at vein 6 and met by a dark streak from the apex. A marginal series of specks present. Hindwings crimson with black sub-marginal medial patch. Larva ophiusine-shaped with an apple-greenish body and finely lined longitudinally with purple-centered double white lines. The dorsolateral pair of conical tubercles are yellowish patched with red. The larvae feed on Careya, Barringtonia and Planchonia species.

The scientific name Rhyothemis phyllis was first validly published in 1776 by Sulzer.

Its wingspan ranges from 26 to 45 mm. Body is greyish brown. Forewings with a large black patch occupying the whole wing except the basal, costal and outer area. Its outer edge waved ad joined by an oblique streak from the apex. Antemedial and postmedial lines curved inwards below the costa with whitish bands outside them on the black patch. The outer part of the postmedial band pale fulvous colored. Hindwings fuscous, with medial pale band. Cilia with white apex and anal angle. Larva is an elongated semi-looper. Tubercles absent. Head is pale ochreous with black spots. Body with longitudinal red lines dorsally and dorso-laterally.

The cobalt blue tarantula is a medium-sized tarantula with a leg span around 13 cm (5 in). It is noted for its iridescent blue legs and light gray prosoma and opisthosoma, the latter of which may contain darker gray chevrons. Males and females look the same until the ultimate (final) molt of the males. At this point, the male exhibits sexual dimorphism in the form of a light tan or bronze coloration and legginess. Additionally, males gain a palpal bulb on the pedipalps and tibial apophyses (mating hooks). The female eventually becomes larger than the male and lives years longer. The cobalt blue tarantula is a fossorial species and spends nearly all of its time in deep burrows of its own construction.