Behningia nujiangensis Zhou & Bisset, 2019
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publication ID |
https://doi.org/ 10.11646/zootaxa.4671.3.7 |
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publication LSID |
lsid:zoobank.org:pub:EED176F4-BDA3-4053-A36C-8A76D3C4C186 |
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persistent identifier |
https://treatment.plazi.org/id/FC1487F1-FFD2-FF9C-19F2-FA70FDF41F19 |
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treatment provided by |
Plazi |
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scientific name |
Behningia nujiangensis Zhou & Bisset |
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sp. nov. |
Behningia nujiangensis Zhou & Bisset , sp. nov.
( Figs 1 View FIGURE 1 a–h, 2a–k, 3 and 4)
Description. Nymph ( Fig. 1a View FIGURE 1 ). Body length of final instar 22.3 mm; caudal filaments 8.7 mm. General live coloration Tuscan yellow dorsally, pale peach ventrally ( Fig. 3 View FIGURE 3 ). Mouthparts heavily setaceous. Anteromedian margin of labrum shallowly emarginate, extending about 50% of labral width ( Figs. 1b View FIGURE 1 and 2a View FIGURE 2 ). Incisors of mandible greatly reduced except for outer denticle on outer incisor; molar area with short apical spine and heavy setae ( Figs 1c View FIGURE 1 and 2b View FIGURE 2 ). Maxillary palp tri-segmented; galea-lacinia elongated and apically acute ( Figs 1d View FIGURE 1 and 2c View FIGURE 2 ). Labium ( Figs 1e View FIGURE 1 , 2d and 2e View FIGURE 2 ) expanded; glossae fused; paraglossae as wide as long; labial palp tri-segmented; labial palp I expanded, with greatest width at 45% of length; palp II 50 % length of palp I and 80% length of palp III. Prothoracic leg palp-like, with tarsus 35% length of tibia ( Figs. 1f View FIGURE 1 and 2i View FIGURE 2 ). Mesothoracic leg as in Figs 1g View FIGURE 1 and 2j View FIGURE 2 . Metathoracic leg: femur 1.5 times longer than wide; coxa as long as femur; tibia very short, as long as wide; tarsus 1.6 times longer than femur ( Figs 1h View FIGURE 1 and 2k View FIGURE 2 ). Veins of the forewing pad form geminate pairs ( Fig. 2f View FIGURE 2 ). Abdomen with long and heavy setae laterally, setae orange near bases and white near edges; sterna pale with brownish to golden setae on anterior margin of sterna I to IX, posterior-most abdominal setae brownish, sparser and shorter. Gills white, on segments I–VII; gills on segment I single, more than 2 times as long as gills on segments II–VII ( Figs 2g and 2h View FIGURE 2 ). Caudal filaments pale yellow; setae pale.
Material examined. Holotype: 1 late instar nymph, China, Yunnan Province, Lisaw Autonomous Prefecture of Nujiang, Shiyueliang County ( Figs. 5a and 5b View FIGURE 5 ). A right-bank sandy bar on the main channel of the Nujiang River , 27.2612°N, 98.8810°E, 1,086 m a.s.l. Collected on February 13, 2019 GoogleMaps . Paratypes: 10 late instar nymphs, same data as holotype. Other materials: 6 late instar nymphs, 16 middle instar nymphs and 19 early instar nymphs. Collections are deposited in the Kunming Natural History Museum of Zoology , Kunming, Yunnan Province, China (holotype, KIZ0107183 View Materials ; paratypes, KIZ0107184 View Materials – KIZ0107188 View Materials ), in the Insect Museum of the China Agriculture University, Beijing, China (paratypes: CAU-EPH-00001–CAU-EPH-00005), and in the State Key Laboratory of Hydroscience and Engineering, Beijing, China (other materials: LHE-001–LHE-041). Details of collection locality and date are provided in the Supporting Material Table S 1 .
Etymology. The specific epithet refers to the Nujiang River in southwestern China (upper reach of the Salween River), where this species was discovered.
Habitat conditions. Collection locality habitat is depicted in Figure 5c View FIGURE 5 . The sand bar where the type specimens were collected is located in a backwater area, with the marginal water flowing toward the bar recorded at 0.28 m · s- 1 almost perpendicular to the direction of the main stream flow. Water at site: depth to approximately 0.60 m; pH = 6.86; dissolved oxygen content = 10.48 mg · L-1; electrical conductivity = 330 μS· cm-1. The bar is covered with a uniform layer of sand (median particulate diameter D 50 = 0.3 mm). The specimens were collected by shoveling sand samples into a hand net, thus straining the sand to a depth of roughly 5–10 cm. The individual density was estimated to be more than 5 individuals· m-2 along the sediment surface. Other invertebrates collected in the samples with B. nujiangensis were dipteran larvae, including species belonging to the genera Hexatoma (Tipulidae) and Polypedilum , Pagastia and Orthocladius (Chironomidae) .Additionally, other shovel samples from the holotype site contained specimens of the hemipteran Aphelocheirus sp. ( Aphelocheiridae ) which were the most abundant aquatic insects observed, a Davidius sp. larvae ( Odonata : Gomphidae ), and a few specimens of other non-behningid mayflies ( Baetis sp., Ephemera sp.). Notably, neither Aphelocheirus sp. nor the others mentioned were ever collected in the same shovel sample with a behningiid.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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