Method for identification of rose trifoliate bees

The Arge geei Rohwer is a Hymenoptera, a leaf bee, and a three-leaf bee. Adults laid eggs on rose stems, resulting in the stems dry and broken, the mortality rate of 70% to 85%; larvae chewing leaves, light caused by missing teeth, in severe cases, all the leaves to eat light, leaving only the leaves of the main veins and petioles As a result, the production of flowers has been greatly reduced, and serious plots have caused the loss of production.

Adults: Female adults are 7.9 to 8.7 mm in length, 16.1 to 16.8 mm in wingspan, 6.3 to 7.1 mm in males, and 12.8 to 14.1 mm in wingspan. The head, chest and feet are black with an indistinct metallic luster. The abdomen is orange and the abdomen back part is black. Antennae black, stick-like, 2.8?3.1mm long, a total of 3 quarters, the third quarter is the longest, about 8 times the first and second quarters, and gradually thickened toward the end, the male is longer than the chest in the third quarter, the abdomen to No bolder. The compound eye is black and the lower lip is 5 knots. The veins, wings are black, and the wings are round.

Eggs: Long elliptic, long diameter 1.1 to 1.4 mm, short diameter 0.4 to 0.6 mm. It is milky white at the time of first birth, gradually yellowish afterwards, and grayish black and shiny when it hatches. Larvae: When hatched, the body is milky white. After the second instar, the body color changes to green, and the head shell is black. After the fourth instar, the body color changes from green to yellow. The mature larvae are green in the chest, and the belly is orange and yellow gradually deepens from the abdomen. Larvae There are three pairs of thoracodorsa and seven pairs of gastropods. The sixty-seventh group is degenerate into neoplastic form for underdevelopment. The mature larvae have a body length of 13.1 to 16.8 mm.

蛹 蛹 蛹 蛹 蛹 蛹 蛹 蛹 蛹 蛹 蛹 蛹 蛹 蛹 蛹 蛹 蛹 蛹 蛹 蛹 蛹 蛹 蛹 蛹 蛹 蛹 outside 蛹 茧 蛹 蛹 蛹 蛹 蛹The ellipse has a long oval shape. It is white at first and then becomes yellowish-yellow. It is divided into two layers, inner and outer, and the outer layer is made of silk and the inner layer is made of thin silk. The long diameter is 9.8 to 11.8mm and the short diameter is 5.5 to 6.4mm. Naked light yellow. Females were 7.9 to 8.8 mm in length and 5.9 to 7.5 mm in length. The compound eye, head, and chest in turn changed to light gray, gray black, and black.