Micropsectra joganplumosa Sasa et Okazawa, 1991

Giłka, Wojciech & Gadawski, Piotr, 2022, Tanytarsini (Diptera: Chironomidae) collected during Polish expeditions to North Korea, Zootaxa 5214 (2), pp. 151-175 : 154

Micropsectra joganplumosa Sasa et Okazawa, 1991

Micropsectra joganplumosa Sasa et Okazawa, 1991: 55 (male, fig. 1.1a–j; Japan).

Micropsectra tusimalemea Sasa et Suzuki, 1999: 17 (male, fig. 18a–g; Japan), syn. nov.

Micropsectra tusimamenea Sasa et Suzuki, 1999: 18 (male, fig. 19a–g; Japan), syn. nov.

Micropsectra tusimaquerea Sasa et Suzuki, 1999: 21 (male, fig. 23a–g; Japan), syn. nov.

( Fig. 3A–D )

Material examined. Myohyang-san, 22–25 June 1981, 1 male, leg. W. Krzemiński.

Remarks. As in the previous species, males of Micropsectra joganplumosa are variable in the body colouration and main metric characters that probably resulted in description of the species under a series of names, i.e. Micropsectra tusimalemea , M. tusimamenea and M. tusimaquerea . The specimens analyzed ( Sasa & Suzuki 1999) were originally found as belonging to the species closely related to each other and/or to several further Micropsectra described in the same paper. However, the slight differences (scutum colouration, AR values, and length of digitus) are here defined as intraspecific variations. In fact, the drawings presented in original descriptions for all these names do not reflect shapes of the most important diagnostic structures, especially when compared with photographs of their type specimens (cf. Sasa & Okazawa 1991, fig. 1.1a–j + NMNS 217:029 and Sasa & Suzuki 1999, figs 18, 19 and 23 + NMNS 372:016, 372:018, 354:069). Some drawings presented under these names indicate a similar or identical shape of the same hypopygial structures (median and inferior volsellae); on the other hand, the same structure (anal point) nearly identical on photographs differs distinctly on the drawings. In case of such inconsistency, we assume that at least part of the drawings may have been mistakenly assigned to a specimen/name, thus the comparison of the diagnostic structures can only be based on photographs of the designated types. Despite of deformations of the holotypes on slides (hypopygia) some crucial characters indicate that they are conspecific. The characters best defining the species are: the shape of the anal point ( Fig. 3A, B ), the digitus and superior volsella, typical of the Micropsectra notescens species group ( Fig. 3A, C ), and the median volsella in shape of a hockey stick bearing numerous spoon-shaped lamellae ( Fig. 3D ). The species is known from the west of Japan: Toyama Prefecture in Honshu (as M. joganplumosa ) and Tsushima Island, where specimens were collected at one locality, in the same time, using the same method (as M. tusimalemea , M. tusimamenea and M. tusimaquerea ). Now Micropsectra joganplumosa is also recorded from central part of North Korea.

Figures

FIGURE 3. Micropsectra joganplumosa Sasa et Okazawa, 1991, male. A: hypopygium, B: anal point, C: superior volsella and digitus, D: median volsella (B–D magnified × 2 relative to A).