 刺桐姬小蜂 刺桐姬小蜂 刺桐姬小蜂 刺桐姬小蜂 刺桐姬小蜂
Erythrina wasp present mainly in Mauritius, Reunion, Hawaii, Singapore and Taiwan and other countries and regions, discovered in southern Taiwan in 2003, has spread throughout the island, resulting in Tainan and Taitung areas large coral death.
Erythrina wasp in 2004 naming the new species of pest, new record in China mainland, Taiwan is considered in China is the second major fire ants after another alien species. For expert analysis, Erythrina wasp occurring in China at least 2-3 years. Planted in recent years in new plants and cause serious harm occurred, mainly in urban and suburban.
Erythrina species cultivated in China has a long history of excellent native trees in China and important medicinal plants. In recent years, some provinces of Guangdong, introduced from abroad a large number of coral that can flowering plants for landscaping. The survey found that the main hazards Erythrina wasp introduced plants.
Taxonomic status: Erythrina wasp wasp families are eulophidae, Nie wasp subfamily tetrastichinae, hip wasp genus quadrastichus.
Host: It is reported that only harm Erythrina Erythrina wasp species, such as coral erythrinaindica, variegated coral e.variegata, gold veins Erythrina e.variegata var.orientalis, coral coral e.coralloides, comb spines Tong e.cristagalli, e.fusca, e.sandwicensis. According to preliminary investigations, the variegated plant in Shenzhen City, coral, coral comb, Aralia pulse coral and gold flowers e.corallodendron other four coral species found on the pest.
Hazard symptoms: severe damage coral coral wasp species, resulting in leaves, twigs, etc. deformity, swelling, necrosis, galls, caused by severe plant a large number of leaves, plant death.
Morphology, compared with male adult female adult is a large, body length 1.45-1.60mm, dark brown with yellow spots between. Monocular 3, red, slightly triangular arrangement. Compound eyes brown, nearly round. Antennae light brown, scape cylindrical, high over his head; pedicel about 1.3-1.6 times as wide; circular section 1: cable section 3, sections of equal size, side view root length of each section with a 1-2 Cable section with similar sensory, sensory and each phase to the next cable section: Section 3 bars over cable diameter, cable length and section of 2,3 and equal length and width of a considerable section of 1 bar, the first 2 rods wide cross-section, 3 section rod contraction into a conical shape, with a papillary sudden end. Pronotum dark brown, with 3-5 short _set_ae root, in the middle with a concave light yellow horizontal bands. Scutellum brown, with 2 pairs of _set_ae, a small number 3 on the middle two yellow vertical lines. Colorless, transparent wings, wing surface cilia dark brown, veins brown, sub-base to the middle of a front with a bristle, wing room without _set_ae, posterior margin almost pulse degradation, leading edge network: mole vein: posterior vein: 3.9 -4.1:2.8-3.1:0.1-0.3. Section on the back of the abdomen pale yellow, light yellow stain from both sides of the oblique section II, the center line, beyond the fourth quarter. Before and after the foot-based section of yellow, white, shallow section of the base foot, femur brown.
Adult male body length 1.0-1.15mm, head and antennae light yellow white, with three red monocular head, slightly triangular arrangement. Compound eyes brown, nearly round. Antennal scape cylindrical, high over his head; pedicel about 1.5 times as wide; cable section 4, section 1, less than the other sections, no whorled _set_ae; rod section 3, compared with cable diameter, length and Cable section of 2,3 and equal length and width of 1 bar section equivalent to 2 rods wide cross-section, 3 section rod contraction into a conical shape, with a papillary sudden end. Pronotum with yellowish white central spots. Scutellum light yellow, light yellow white middle two vertical lines. Upper abdomen pale yellow, the back of the first two yellow white. All yellow-white feet,
Biology: According to the current study, insect reproductive ability, mating will soon be adult emergence, females lay eggs before the host with the ovipositor puncture skin, the eggs produced in the host leaves, petioles, twigs or bud epidermis, the larvae feeding on leaf tissue after hatching, leaves most of the gall larvae were only a small number of gall larvae within 2: stems, petioles, and the number of new branches within the organization up to five larvae above. Larvae complete development in the gall and pupate therein, the adult emergence hole from climbing out. Insect life cycle is short, a generation or so about 1 month, 1 year can occur in multiple generations, generations overlap severely. |
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