Behningia nujiangensis Zhou & Bisset, 2019

Kwanboon, Sedtawut, Sartori, Michel & Boonsoong, Boonsatien, 2021, Behningiidae and Potamanthidae (Insecta, Ephemeroptera) in Thailand, ZooKeys 1067, pp. 57-82 : 57

publication ID	https://dx.doi.org/10.3897/zookeys.1067.72779
publication LSID	lsid:zoobank.org:pub:8DB9C8FE-9DF7-438D-92BA-4B40E81F5DE1
persistent identifier	https://treatment.plazi.org/id/2700A301-A420-5238-BE15-10DB500371F4
treatment provided by	ZooKeys by Pensoft
scientific name	Behningia nujiangensis Zhou & Bisset, 2019
status

Treatment

Figures 1A View Figure 1 , 2 View Figure 2 , 3 View Figure 3 , 4 View Figure 4 , 9 View Figure 9

Materials examined.

2 mature larvae, Thailand, Chiang Mai province, Mae Tang district, Tard Luang Waterfall , 19°01'27.5"N, 98°51'17.1"E, 18.IX.2011, P. Sritipsak leg. deposited in ZMKU GoogleMaps .

Diagnosis.

The larvae of Behningia nujiangensis Zhou & Bisset, 2019 can be separated from those of other Behningia species based on the following characteristics: i) labrum shallowly emarginate at anteromedian margin (Fig. 2A View Figure 2 ), ii) molar areas of mandible with a small apical spine (Fig. 2B View Figure 2 ), iii) galea-lacinia of maxilla elongated and slender (Fig. 2C View Figure 2 ), iv) labial palp 3-segmented, segment II as long as segment III (Fig. 2D View Figure 2 ), v) tarsus of forelegs about 40% the length of tibia (Fig. 3A, B View Figure 3 ), vi) middle and hind legs with coxa as long as femur (Fig. 3C, D View Figure 3 ).

Egg (dissected from mature larva). Length 1.62-1.73 mm, width 1.09-1.26 mm (n = 13); oval (Fig. 4A View Figure 4 ); with massive amounts of fibrous adhesive material localised at the polar and equatorial regions of the egg (Fig. 4B View Figure 4 ); chorion densely and finely punctutated, with a weakly developed pentagonal reticulation, circular in shape and convex in the middle (Fig. 4C View Figure 4 ); funnelform micropyle in the centre of circular accumulations of adhesive material only at the equatorial zone (Fig. 4D View Figure 4 ).

Distribution.

Chiang Mai province.

Remark.

The larvae of B. nujiangensis were originally described by Zhou et al. (2019) and collected from China (Nujiang river, Yunnan province, upper Salween river). In Thailand, the samples were collected from the Tard Luang waterfall (fine sandy habitat) in 2011, and specimens were deposited but only identified to the genus level (Dr. Akekawat Vitheepradit, Department of Entomology, Kasetsart University). In this study, we re-examined and identified the specimens. We attempted to collect specimens from the same microhabitat near the Tard Luang waterfall; however, unfortunately, no specimens were found.

Genus Protobehningia Tshernova & Bajkova, 1960