Jeju Gotjawal

Archive for December, 2010

Paraplesius unicolor Scott 막대허리노린재

by on Dec.18, 2010, under insects

Form: The length of the body is 12~14mm. The color is green and light yellowish brown. The black spots are scattered. The body is thin and long. As the length of the head and front chest and back and stomach is identical, their body shape is bar. The bottom of the body is yellowish brown and the center of the front is black. The legs are dark color and thin and long.

Other characters: They live in Korea and Japan. In “Dongbaekdongsan” of Gotzawal, you can see them lie on the broad leaves.

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Quercus gilva Blume(Red bark Oak) 개가시나무

by on Dec.18, 2010, under trees

Form : Evergreen broad-leaved arboreous tree

Characteristic :

 The leaf has upside down spear shape which is oppose to blume and the length is 5~12cm. The width is 2~3.5cm. It  has sharp sawtooth at upperleaf. And front of the leaf has no fur, hack of the leaf has yellowish brown fur closely covered. A nut which has fur and ripen on november is wide oval or egg shape oval, the length is 14~18mm. This monoecism flowers blossom on April. The trunk`s height is 20m and the bark of a tree has dark brown color, it peel off a little. Small branch covers with yellowish brown fur. The place of origin is Korea, China, Japan and Taiwan.

Where you can see this species at Dongbaekdongsan  :

It is rare plants as second extinct crisis plants. It is obsereved at a restricted area in Dongbaekdongsan. When we walk through a path up a mountain, we can see that an information signboard is set up. Leaf is pointed vertically and has sawtooth at the edge. There is yellowish brown star shape fur tightly.

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Physopelta gutta (Burmeister) 귤큰별노린재

by on Dec.18, 2010, under insects

Form: There is yellow stripe pattern on the head, chest and stomach. The imago’s body is long and thin. The wings are also long and thin and the edge of them is sharp and transparent. The nerves are thin. The compound eyes are dividied into two by a groove.

Other characters: In day, they usually act in the forests and in night, they flock together around the light.

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Atractomorpha lata (Motschulsky) 섬서구메뚜기

by on Dec.18, 2010, under insects

Form: The length of the body is 28~42mm. The body is small and light green. The females are much bigger than their counterparts. The head’s shape is a circular cone. The bottom of the back wing is light yellow.

Other characters: You can see them at the grassland or the rice field. As they eat many plants, especially petals, they are treated as a pest. The male, who is smaller than the female, climb the female’s back and they do mating for a long time. The imago appears in June ~ November. They live in Korea, Japan and China.

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Blattella nipponica Asahina 산바퀴

by on Dec.18, 2010, under insects

Form: They are 11~14mm. The color is wholly light brown. They are similar to cockroach but the stripe on their front chest is more thick and dark. 

Other characters: They usually live in the bottom of forests or fallen leaves. You can see them From June to October. They go through winter as a larva. In winter,  you can see the larvas when you raise leaves on the ground. They experience incomplete matamorphosis. They are wild animals so they  don’t come in home. In Dongbaekdongsan(Gotzawal in Jeju), they can be  seen anywhere(easily), especially in non-moist leaves.

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Sympetrum infuscatum (Selys) 깃동잠자리

by on Dec.18, 2010, under insects

Form: The length of the stomach is 25~32mm and that of the back wings is  28~37mm. The male is bigger than the female. The female’s pattern on  the edge of the back wings is more darker than that of the male. Both  have two black stripes, one is on the chest and the other is on the  stomach. 

Other characters: The imago appears from July to October and they inhabit hill land or  near the ponds. In autumn, they go down to waterside for distracted.  They live in Korea, Japan and China. In Dongbaekdongsan(Gotzawal in  Jeju), you can see them around the wetland “Meonmulkkak”.

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Orthetrum triangulare melania (Selys) 큰밀잠자리

by on Dec.18, 2010, under insects

Form: The length of the stomach is 34~36mm, and that of the back wings is 38~40mm. The color of the male’s body is white gray and the  counterpart’s is yellow brown. The female have a black stripe on her body. The front wings are more bigger that the back wings. This dragonflies are  more bigger and nimble than Orthatrum albistylum.

 Other characters: Orthetrum triangulare melania is also called “dragon dragonfly”. The  imago appears from May to October and they inhabit fields, wetland in  deep mountain and so on. In Dongbaekdongsan(Gotzawal in Jeju),  you  can see them aroung the wetland “Meonmulkkak”.

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Quercus acuta Thumb.(Japanese Red Oak) 붉가시나무

by on Dec.18, 2010, under trees

Form : Evergreen broad-leaved arboreous tree

Characteristic

Leaves are crossed out, long oval shape oval shape or long egg  shape. It’s length is 7~13cm, the edge is round and smooth but some has a sawtooth. The surface is lustrous dark green and the back is yellow green. When is was young, it is covered with brown far but since it grows up it disappear. The fruit is hemisphere and oval nut is 2cm, taste bitter, ripen on October. Both male and female flowers bloom at one stump. The trunk is thick, grows straight and also has lots of branch s and dense leaves. Woods are ruddy and hard. The bark of a tree is dark brown and is peels a little. The place of origin is Korea.

Where you can see this species at Dongbaekdongsan  :

It mainly grows up over 400m. We can barely see young this tree at near walk enterance. Leave’s surface is lustrous dark green. Different from other thorny plant in Dongbaekdongsan.  Sometimes, leaves hace sawtooth, but most are smooth

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Indolestes gracilis peregrinus 가는실잠자리

by on Dec.18, 2010, under insects

Form: They are 28~32mm sized. They go through the season ‘winter’ in brown, but in spring when they prepare mating they become blue. In other  words, they have a protective coloration in winter and a nuptial coloration  in spring.

Other characters: Most of them live in forests. They appear from April to November. They  act as an imago like “Sympecma paedisca (Brauer)”, and they experience  “incomplete metamorphosis“. In Dongbaekdongsan(Gotzawal in Jeju), you  can see them at the wetland “Meonmulkak”‘s surface. Damselflies  including this dragonfly tend to hunt near water, so as soon as you arrive  in  Meonmulkak, you can see them immediately.

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Phaneroptera nigroantennata Brunner 검은다리실베짱이

by on Dec.18, 2010, under insects

 Form: The body color is dark green and there are black spots on the back. The back side of the stomach is light blue. The ovipositor is green and the egde is light brown.

Other characters: They only live in mountains. They fly between tall plants. They are diurnal. In Southern part of the Korea, you can see one or two generation of them a year and in counterpart, you can see only one generation a year.

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