| Holotrichia disparilis | |
|---|---|
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Coleoptera |
| Family: | Scarabaeidae |
| Genus: | Holotrichia |
| Species: | H. disparilis |
| Binomial name | |
| Holotrichia disparilis Arrow, 1916 | |
Holotrichia disparilis is a species of chafer found in Sri Lanka. [1]
It is a major pest of Camellia sinensis particularly in nursery and seedling stages where they mainly attack roots. Disease symptoms are yellowed or dead leaves, reduced root system and finally dieback of the whole plant. White grubs mainly affect young tea plants. During dry weather, roots are infested with large number of grubs and leave calloused stumps. [2] [3] They also feeds on the bark at soil level which can be seen as ring-barking of the stem. In Sri Lanka, damage occurs mainly during June to August or from November to December in north-eastern and south-western monsoonal zones. About 80-90% of grubs can be collected by hand picking method to control the pest attack. [4]
The Japanese beetle is a species of scarab beetle. The adult measures 15 mm (0.6 in) in length and 10 mm (0.4 in) in width, has iridescent copper-colored elytra, and a green thorax and head. It is not very destructive in Japan, but in North America and some regions of Europe, it is a noted pest to roughly 300 species of plants, including rose bushes, grapes, hops, canna, crape myrtles, birch trees, linden trees, and others.
The Oriental beetle is a species of shining leaf chafer in the family Scarabaeidae. It is a beetle about 0.7 - 1.1 cm long, with mottled, metallic brown- and black-colored elytra and a similarly colored thorax and head during the adult stage. It is sometimes confused with the larger and more colorful Japanese beetle. During the larval stage, the Oriental beetle can be identified by the parallel line raster pattern.
Dermolepida albohirtum, the cane beetle, is a native Australian beetle and a pest of sugarcane. Adult beetles eat the leaves of sugarcane, but greater damage is done by their larvae hatching underground and eating the roots, which either kills or stunts the growth of the plant. The beetles can also be found in the Philippines and are known there by the local name salagubang.
Macrodactylus subspinosus is a North American beetle of the family Scarabaeidae. The members of its genus are known as "rose chafers", not to be confused with the European rose chafer, Cetonia aurata. M. subspinosus occurs from Eastern Canada to Colorado and is considered a pest of many crops and flowers. It is given its common name of rose chafer because it eats the leaves of roses, although it also feeds on many other plants.
Trichiotinus piger, the hairy flower chafer or bee-like flower scarab, is a species of beetle in the family Scarabaeidae.
The European chafer is a beetle of the family Scarabaeidae. Formerly found only in continental Europe, this invasive species is now found at temperate latitudes in North America. The large, white grubs of A. majale feed on the roots of most cool-latitude grasses, both wild and cultivated. This has made the European chafer an enemy of lawns.
Holotrichia is a genus of beetle in the family Scarabaeidae, which are well known as "chafer beetles" or "white-grubs" for their white larvae that are found under the soil where they feed on the roots of plants.
Pyronota festiva, commonly known as mānuka beetle or mānuka chafer, is a member of the genus Pyronota of the beetle family Scarabaeidae. It is a scarab beetle endemic to New Zealand, and is commonly found in mānuka trees, hence the beetle's name. In some areas it is considered a pasture pest.
Cyclocephala lurida, the southern masked chafer, is a species of beetle in the family Scarabaeidae which is native to the southeastern United States. It is a brown beetle with a black head, with an adult length of 10 to 14 mm. The adult beetles cause no harm, but the eggs are laid underground and the developing larvae feed on grass roots and can kill turf under dry conditions.
Melolonthini is a tribe of scarab beetles in the family Scarabaeidae. There are over 250 genera in Melolonthini, occurring worldwide; there are over 300 species in North America alone, and more than 3000 worldwide.
Adoretus versutus, commonly known as rose beetle, is a species of shining leaf chafer found in Afro-Oriental tropics.
Apogonia blanchardi, is a species of dung beetle found in India and Sri Lanka.
Apogonia rauca is a species of dung beetle found in India and Sri Lanka.
Holotrichia rufoflava is a species of dung beetle found in South India and Sri Lanka.
Holotrichia serrata, commonly known as the sugarcane white grub, or cockchafer grub, is a species of dung beetle found in India, Bangladesh, and Sri Lanka.
Leucopholis pinguis is a species of scarab beetle found in Sri Lanka.
Schizonycha ruficollis, is a species of dung beetle found in India and Sri Lanka.
Phyllognathus dionysius, is a species of dung beetle found in India, Sri Lanka, Pakistan and Nepal.
Glycyphana horsfieldi, is a species of flower chafer found in India, Sri Lanka, Malaysia, Thailand, Nepal, and Vietnam.
Xylotrupes meridionalis, commonly known as forked horns rhinoceros beetle, is a species of rhinoceros beetle found in India and Sri Lanka.