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To clarify the types, distribution, and morphological characteristics of peripheral sensilla in female oriental fruit fly Bactrocera dorsalis, scanning electron microscopy was used to examine sensilla on the antennae (funiculus), maxillary palps, proboscis, legs, wings, and ovipositor. The results revealed that five types of sensilla were mainly distributed across six organs: microtrichia, sensilla trichoid, sensilla basiconica, sensilla coeloconica, and sensilla chaetica. Microtrichia were distributed on the antennae, maxillary palps, proboscis, legs, and wings. Notably, three subtypes (I-III) were observed on the legs, and those on the wings were longer than those on the antennae, maxillary palps, and proboscis. Sensilla trichoid were distributed on the antennae, proboscis, and ovipositor, with distinct morphological differences between those on the antennae and those on the other two organs. Sensilla basiconica were found on the antennae, maxillary palps, and proboscis. Two subtypes (I and II) were present on the antennae and three subtypes (I-III) on the proboscis. Pores were observed on the surface of sensilla basiconica on the antennae and maxillary palps, but not on the proboscis. Sensilla coeloconica were located on the antennae and ovipositor, with two subtypes (I and II) on the ovipositor, among which subtype I exhibited a symmetrical distribution. Sensilla chaetica were distributed on the maxillary palps, proboscis, legs, wings, and ovipositor, displaying similar morphology across organs, with three subtypes (I-III) identified on the legs. These results indicate that sensilla on different external organs of B. dorsalis differ in their distribution, type, and morphology, suggesting that these sensilla may perform distinct biological functions.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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