Metadon spuribifasciatus ( Huo, Ren et Zheng, 2007 )

Tian, Jing, Huo, Ke-Ke, Zhang, Chun-Tian & Ren, Bing-Zhong, 2019, Microdon dentigiganteum sp. nov. and other Microdontinae species (Diptera: Syrphidae) from Northeast China, Zootaxa 4712 (1), pp. 65-76 : 67-70

Metadon spuribifasciatus ( Huo, Ren et Zheng, 2007)

( Fig. 7A )

Microdon spuribifasciatus Huo, Ren et Zheng, 2007 . Fanua of Syrphidae from Mt. Qinling-Bashan in China (Insecta: Diptera ): 403.

Diagnosis. Lateral oral margins not produced. Scutum entirely short yellow pilose. Scutellum roughly semicircular, with very small calcars. Propleuron with microtrichia. Abdomen narrow, less than 1.5 times the width of the thorax. Lateral margins of the abdomen are markedly thickened except at the junction of terga II and III. Length ratio of terga III–IV about 1: 1.

Examined material: 1♀, Lushuihe, 760 m, Fusong , Jilin province, 8.vii.2017, leg. J. Tian (NENU) .

Remarks. This species was established by Huo et al. (2007) and originally placed in the genus Microdon . Reemer & Ståhls (2013a) transferred some species, including M. spuribifasciatus , from genus Microdon to Metadon based on characters of the mesopleuron and male genitalia. We found the external characters of this species were in accordance with those of the genus Metadon , including the katepimeron with wrinkled texture, katatergum with oblique rows of microtrichia, elongated abdomen, and the anepisternum pilose except for its ventral half. According to Reemer & Ståhls (2013a), in Metadon the anepisternum is usually entirely pilose or with a small bare part ventrally, except in M. bifasciatus Matsumura , the sibling species of M. spuribifasciatus , in which the anepisternum is bare on the entire ventral half.

Figures

FIGURE 7. Habitus of adult Microdontinae from Northeast China, dorsal view. (A) Metadon spuribifasciatus, female; (B) Microdon analis, male; (C) Microdon auricomus, female; (D) Microdon ignotus, male; (E) Microdon oitanus, male. Scale bar: 5mm.