Acrocercops panacitorsens
Encyclopedia
Acrocercops panacitorsens is a moth
of the Gracillariidae
family. It is known from New Zealand
.
The wingspan
is about 9 mm. There is a separate variety of this species on the North Island. This variety is slightly smaller, with a wingspan of about 8 mm.
The larva
e feed on Nothopanax arboreum, Nothopanax sinclairii and Panax species. They mine
the leaves of their host plant. The mine is entirely on the under-surface of the leaf. Throughout its whole course it is a simple gallery, and very tortuous in its direction. The chief direction is in the long axis of the leaf, and the outer portions of the leaf are more mined than the centre. The gallery twists and turns, and in its course follows so close against the earlier portions that the partition between them is broken down, and finally the entire mine appears to form a huge blotch occupying about one half the leaf-surface. Though thus closely following its former track, it rarely crosses it except under direct need. The midrib forms a barrier, except in its upper and thinner part, where it is invariably crossed. The colour in the early stages of the mine is white with a fine brown central line occupied by the frass
. The remainder of the mine is a shade paler green than the rest of the leaf.
Moth
A moth is an insect closely related to the butterfly, both being of the order Lepidoptera. Moths form the majority of this order; there are thought to be 150,000 to 250,000 different species of moth , with thousands of species yet to be described...
of the Gracillariidae
Gracillariidae
Gracillariidae is an important family of insects in the order Lepidoptera and the principal family of leaf miners that includes several economic, horticultural or recently invasive pest species such as the horse-chestnut leaf miner, Cameraria ohridella....
family. It is known from New Zealand
New Zealand
New Zealand is an island country in the south-western Pacific Ocean comprising two main landmasses and numerous smaller islands. The country is situated some east of Australia across the Tasman Sea, and roughly south of the Pacific island nations of New Caledonia, Fiji, and Tonga...
.
The wingspan
Wingspan
The wingspan of an airplane or a bird, is the distance from one wingtip to the other wingtip. For example, the Boeing 777 has a wingspan of about ; and a Wandering Albatross caught in 1965 had a wingspan of , the official record for a living bird.The term wingspan, more technically extent, is...
is about 9 mm. There is a separate variety of this species on the North Island. This variety is slightly smaller, with a wingspan of about 8 mm.
The larva
Larva
A larva is a distinct juvenile form many animals undergo before metamorphosis into adults. Animals with indirect development such as insects, amphibians, or cnidarians typically have a larval phase of their life cycle...
e feed on Nothopanax arboreum, Nothopanax sinclairii and Panax species. They mine
Leaf miner
Leaf miner is a term used to describe the larvae of many different species of insect which live in and eat the leaf tissue of plants. The vast majority of leaf-mining insects are moths , sawflies and flies , though some beetles and wasps also exhibit this behavior.Like Woodboring beetles, leaf...
the leaves of their host plant. The mine is entirely on the under-surface of the leaf. Throughout its whole course it is a simple gallery, and very tortuous in its direction. The chief direction is in the long axis of the leaf, and the outer portions of the leaf are more mined than the centre. The gallery twists and turns, and in its course follows so close against the earlier portions that the partition between them is broken down, and finally the entire mine appears to form a huge blotch occupying about one half the leaf-surface. Though thus closely following its former track, it rarely crosses it except under direct need. The midrib forms a barrier, except in its upper and thinner part, where it is invariably crossed. The colour in the early stages of the mine is white with a fine brown central line occupied by the frass
Frass
Frass is the fine powdery material phytophagous insects pass as waste after digesting plant parts. It causes plants to excrete chitinase due to high chitin levels, it is a natural bloom stimulant, and has high nutrient levels. Frass is known to have abundant amoeba, beneficial bacteria, and fungi...
. The remainder of the mine is a shade paler green than the rest of the leaf.