Top 17 Most Common Insects in Dumalag

Despite its name, american cockroach (Periplaneta americana) is not native to the Americas but rather to Africa and the Middle East, from which it arrived as a result of human commercial patterns. Notably quick and rather resilient, this species is capable of limb regeneration. It requires a certain level of moisture to thrive, and it will avoid drier areas unless it has access to the required level of water.

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.

Ricania speculum can reach a length of about 8 mm, with a wingspan of about 1.5 cm. These planthoppers have dark brown wings with central wavy horizontal bands and irregular transparent patches of different sizes. The precostal area of the forewings shows dense transverse veinlets and the costal margin is distinctly convex near the base. In males the tip of the abdomen is pointed, while in females is rounded. The final instar nymphs are white with dark brown markings and waxy secretions on the abdomen.

Dardanus pedunculatus usually attain a maximum size of 10 centimetres (4 in). The carapace is mottled in tan and cream, while the eyestalks are white with red bands. The sexes are similar. The left claw is much larger than the right claw.

Male: upperside umber brown. Forewing with the costal margin narrowly fulvous (reddish brown) near apex, crossing towards the termen, forming an obscure preapical band joining a subterminal lunular band of the same colour. Hindwing uniform, with a subterminal band as in the forewing but not lunular, straight. Underside pale brown, with the following transverse pale lilac-white bands crossing both forewing and hindwing: basal, subbasal, discal, postdiscal, broad subterminal and terminal; the subbasal and discal of equal width, meeting above the tornal angle in V-shape, the space between the two bands with, on the forewing, two shorter similar bands crossing the cell, on the hindwing a single similar band from costa to median vein; subterminal band on hindwing bent upwards above tornal area and continued halfway up the dorsal margin, the broadly-produced tornus with a dark brown spot; finally a large ochraceous ocellus in interspace 2, and a smaller similar one in interspace 6. Antennae reddish; head, thorax and abdomen umber brown. Secondary sex-mark a glandular fold in membrane of wing shaded by tufts of long hair along vein 1 on upperside of hindwing, and preapically on the abdomen with tufts of stiff long hairs. Female: Upper and undersides as in the male but paler; on the upperside the fulvous along the costal margin widens into a preapical patch, and generally the bands on the underside show through and appear above as pale fulvous bands.Wingspan: 11 - 12 cm .Eggs: The freshly laid eggs are creamy white with a small black spot in the centre and a black circular ring. The eggs are laid in a row. At Thenmala, the observer saw two rows, the first having 15 eggs and the second 3 eggs. Prior to hatching, the colour of the egg changes to black. Larvae: The first instar larvae are cylindrical, measuring 0.6 - 0.8 mm in length. The second instar larvae are pale greenish yellow measuring 0.8 - 1.2 mm in length. The third instar larvae are morphologically very similar to the previous instar, but are longer ( 3 - 4 cm ) and stouter. The fourth instar larvae are stouter and longer measuring 4.5 - 5 cm . During the fifth instar, the larvae become more brownish than greyish and measure 7 - 8 cm in length. Larvae of the palm king are voracious feeders. Most of the time, they remain on the underside of the leaf, eating from the tip of the leaf working towards the base. With regard to coloration, the fifth instars show marked difference in their ground colour: some being more brownish and some more greyish. Pupa: The process of pupation takes about half a day and resulted in a greenish spindle-shaped pupa, well-camouflaged among the pointed leaves of the host plant. Initially, they are semi-transparent but later they become more opaque. The pupa has veins and lines similar to that of the leaves of the host plant, all veins ending at the pointed lower end of the pupa. The pupa becomes transparent on the eve of hatching, with the wings and head clearly visible.

The female gray wall jumper lays her eggs in cracks or other hidden areas. The young and mature spiders feed on flies, making them useful residents in a household. They do not make webs, but carefully hunt and jump on their prey.

The six-spotted zigzag ladybird beetle is a common visitor to agricultural fields in India where it is considered a beneficial insect. It preys on several insects that reduce crop yield and is a more cost-effective and environmentally friendly method of pest control. The insect hibernates in cold temperatures, only appearing from spring through fall.

The wingspan is 6 - 8 cm. Head, thorax and abdomen are purplish grey, which differs from Theretra nessus. Vertex of head and a dorso-lateral stripe to thorax and abdomen is green. Forewings are purplish grey with a green oblique central area from below apex to inner margin with some indistinct lines on it. There is an irregular dark outer area with some yellow inside it. Hindwings with anal patch and submarginal band are pointed.Larva are greenish with a dark dorsal line, and a subdorsal pale line on thoracic somites. The fourth somite has a large ocellus, which is white ringed with brown and centered with blue and green. The ocelli on the fifth to tenth somites are bluish with yellow centers. Lateral area is greenish and horn is yellowish.

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 scientific name of the species was first validly published in 1782 by Caspar Stoll.