Wankeliella intermedia Potapov & Stebaeva 1997
- Dataset
- New species and records of Tullbergiidae (Collembola, Poduromorpha) from Xinjiang province, Northwest China
- Rank
- SPECIES
Classification
- kingdom
- Animalia
- phylum
- Arthropoda
- class
- Collembola
- order
- Poduromorpha
- family
- Tullbergiidae
- genus
- Wankeliella
- species
- Wankeliella intermedia
description
Description of Chinese materials. Adult body 0.51 mm long on average (0.47 – 0.55 mm, n = 4). Dorsal setae well differentiated into micro- and macrosetae (Figs 25 – 29). Granulations on body coarse. Pso formula as 11 / 022 / 11111 from head to abdomen, 6 – 8 μm in diameter, type I (Figs 23, 25 – 29). Th. II and III each with two pairs of pso, subdorsal one between setae p 3 / p 4, close to p 3, lateral one posterior to seta m 5 (Figs 25 – 26); pso on Abd. I – IV posterior to seta p 3 (Figs 27 – 29), on Abd. V between the borders of Abd. V and VI. Cephalic seta a 0 and sd 5 as mesosetae, 6 – 8 μm, c 1 absent, oc 2 as macroseta, 11 – 14 μm (Fig. 20). Postantennal organ 15 – 16 μm long and 5 – 6 μm wide, composed by 6 or 7 parallel lying vesicles in two rows (Figs 21 – 22). Labrum with 4 / 5 / 4 setae. Labium with 5 papilla, 6 apical guard setae, 6 proximal setae, 4 basomedian setae, and 5 basolateral setae (Fig. 24). Antenna (70 – 75 μm) shorter than head (80 – 85 μm) (Fig. 21). Antennal segment IV with four thickened sensilla a – d; sensilla a, c, d curved toward inside, b long, e slender. Small microsensillum, subapical organite and one apical vesicle present. Antennal organ III consists of two small sensory rods concealed behind one large papilla and two thick sensory clubs bent toward each other (Fig. 21), with four guard setae; one large ventral sensory club present. Legs short, without clavate tibiotarsal hairs (Fig. 31). Coxa, trochanter, femur and tibiotarsus with 3 / 7 / 7; 5 / 5 / 4; 9 / 9 / 9; 11 / 11 / 11 setae on Leg I, II and III respectively. Claw 10 μm long (Fig. 31), with minute empodial appendage (3 – 4 μm). Anal lobes with seta 12 ' and l 3 ' present (Fig. 30). Anal spines short, 7 – 8 μm long. Adult chaetotaxy given in Figs 25 – 29 and Table 3. Microsensilla present on Th. II – III, lateral sensilla 19 – 22 μm long (Fig. 26). Th. II and III each with 6 m-setae, m 3 absent (Figs 25 – 26). Thorax with 0, 2, 2 ventral setae. Abd. I – III with 2 + 2 axial setae each, Abd. I with m 4, Abd. II – III with setae m 3 and m 4 present (Figs 27 – 28). Abd. IV with setae m 4 and px present, p 1 as macrosetae (15 – 16 μm), p 2 as microseta (10 μm), p 4 as microseta (Fig. 29). Abdominal segment V (Fig. 29) with sensillum p 3 spindle-like, 10 – 11 μm in length; seta a 4 (20 μm) and p 2 (18 – 22 μm) as macroseta. Crescentic ridges on abdominal segment VI present. Ventral tube with 4 + 4 apical setae and 2 + 2 basal setae (Fig. 31). Abd. II, III and IV with 20, 24, and 27 ventral setae respectively. Female genital plate with 5 + 5 pregenital setae, 5 circumgenital setae, one pair of eugenital setae and 2 pairs of post-genital setae.
description
Figures 20 – 31, Table 3
diagnosis
Diagnosis. Postantennal organ composed by 6 or 7 parallel lying vesicles; Pseudocelli as type I with formula as 11 / 022 / 11111, Th. II and III each with two pairs of pseudocelli; Th. II and III each with 6 m-setae (m 3 absent); seta px on Abd. IV present; on Abd. V, setae a 1 – 3 as microsetae, a 4 as macroseta, sensillum p 3 spindle shaped.
discussion
Remarks. Wankeliella intermedia was originally described from Tuva of Russia, and recorded in North Norway and North Siberia later. The morphology of Chinese specimens is nearly the same as types. As noted by the author in the original description, the PAO of this species is not in the typical shape compared with other congeners. As a consequence, it was placed in the genus Wankeliella temporarily.
distribution
Distribution. China (Xinjiang), Russia (Tuva, North Siberia), Norway.
materials_examined
Material examined. 3 females (slide Nos. XJ- 2016005, XJ- 2016006 - 1, XJ- 2016006 - 2), 1 male (slide No. XJ- 2016007), Northwest China, Xinjiang Province, Aletai City, Buerjin County, Hemu village, 48 ° 33 ’ N 87 ° 25 ’ E, elev. 1150 m, soil samples from broad-leaf forest, 20 - VIII- 2016, C. W. Huang coll.