Skip to main content

Walang batik (Valanga nigricornis insularis)

Walang batik or batik valanga (Valanga nigricornis insularis) is a grasshopper subspecies in Acrididae, living arborial in bushes and trees in open habitats, very large sexual dimorphism with 45-55 mm long males and 15-75 mm females, pale green nymphs with markings dark sign.

V. nigricornis insularis live in large groups to colonize the area, adult females are yellowish brown, yellowish or green with bluish-black markings and the hind wings will look rose red when flying.

Dlium Walang batik (Valanga nigricornis insularis)

Males have black fake wings, black-brown heads, black eyes, black antennae, chest and abdomen yellow with black features, reddish-brown legs with black features, brown underside, brown upper legs and black underside.

Walang batik has one generation every year with four eggs laid on moist soil in the clearing of the forest. The eggs will remain inactive throughout the dry season and take 6-8 months to hatch before the rainy season.

The hatching eggs produce nymphs for 6-7 instar stages before becoming adults which are usually in January-February. Nymphs and adults are diurnal and like to bask in the sun to eat leaves.



Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Hexapoda
Class: Insecta
Subclass: Pterygota
Order: Orthoptera
Suborder: Caelifera
Infraorder: Acrididea
Superfamily: Acridoidea
Family: Acrididae
Subfamily: Cyrtacanthacridinae
Tribe: Cyrtacanthacridini
Genus: Valanga
Species: Valanga nigricornis
Subspecies: Valanga nigricornis ssp. insularis

Popular Posts

Yellow garden spider (Argiope appensa)

Yellow garden spider ( Argiope appensa ) is a species of spider in Araneidae that lives on the coast to forests on islands in the western Pacific Ocean. Black and yellow females are striking and have a length of 5.1-6.4 cm including long legs, while males are brown and have a length of about 1.9 cm. A. appensa lives on cliffs in the hills at 600 m above sea level in Kewu plain to rice fields in the lowlands. They make nests at a height of 1.5 meters from the ground between teak ( Tectona grandis ), sonokeling ( Dalbergia latifolia ), sonosiso ( Dalbergia sissoo ), crown flower ( Calotropis gigantea ) and various grasses. Yellow garden spiders grow in large sizes, but are not toxic to humans. Advanced builds ball-shaped nets and most of them make stabilizers which are zigzag-shaped lines in nets made of thicker bands. This species spends more time in stationary and sits in the middle of the net with its head down to wait for insects to be entangled in fine silk thread. Unli...

Skyflower (Duranta erecta)

Sinyo nakal or skyflower ( Duranta erecta ) is plant species in Verbenaceae, a broad shrub or small tree, up to 6 m high, stems growing upright or horizontally with broad clumps, many branches, bark light brown, old tree has axillary spines and grows to form dense colonies. D. erecta has bright green leaves, elliptical to ovoid, pointed or rounded ends, sitting opposite, 7.5 cm long, 3.5 cm wide, a main vein in the middle with several small lateral veins, petiole long 1.5 cm. Flowers are light blue or lavender or white, appear in tight clusters as on terminal stems and axils, often curled or pendulous, blooms in summer. The fruit is a berry having a stalk, small round, yellow or orange or white in color, up to 11 mm in diameter, an eye green in front and containing several seeds. Skyflower grows in dry or humid areas and lots of sun, rocky or sandy beaches, forests, farmland and disturbed places. Plants will grow at a rate of up to half a meter per year. Kingdom: Plantae Phylum:...

Big-leaved acacia (Acacia mangium)

Big-leaved acacia ( Acacia mangium ) is a species of woody plants in the Acacieae, long oval leaves, growing up to 30 m and straight stems, except in less favorable places will grow only 7-10 m, have hardwood, rough, longitudinal grooved and dark to light brown. A. mangium has shoots with compound leaves consisting of many minor leaves and after growing a few weeks does not produce any more real leaves but the main axis of the petiole of each compound leaves widens and turns into known pohyllocladus or pseudo leaves. Big-leaved acacia has about 142,000 seeds/kg. Long pods form circular threads and are black or brown when ripe. Dry pods will open to expose small black seeds. Trees bind nitrogen to the soil and are a popular species for agroforestry projects. This plant is weather resistant, although it requires special care if it is planted as a garden plant where the leaves are falling a lot. These plants include legumes that grow quickly by increasing height 4 m per year near ...