taxonID	type	description	language	source
03FB2749FFA46636B08F6637FE32FAA5.taxon	description	Figs 1 – 18, Tab. 1 and 3	en	Jiang, Jigang, Yin, Wenying (2010): Two new Hypogastrura species (Hypogastruridae, Collembola) from China. Zootaxa 2542 (1): 48-60, DOI: 10.11646/zootaxa.2542.1.4, URL: https://biotaxa.org/Zootaxa/article/view/zootaxa.2542.1.4
03FB2749FFA46636B08F6637FE32FAA5.taxon	materials_examined	Type material. Holotype male, China, Hubei Province, Xianfeng County, Laoliba Village. 1000 m alt. 23. ix. 1997, collector unknown, mounted on slide. Paratypes, three females (subadult, mounted on slides) and one specimen in alcohol, the same data as holotype. All types deposited in Institute of Plant Physiology & Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences.	en	Jiang, Jigang, Yin, Wenying (2010): Two new Hypogastrura species (Hypogastruridae, Collembola) from China. Zootaxa 2542 (1): 48-60, DOI: 10.11646/zootaxa.2542.1.4, URL: https://biotaxa.org/Zootaxa/article/view/zootaxa.2542.1.4
03FB2749FFA46636B08F6637FE32FAA5.taxon	description	Description. Body length 1.4 – 1.6 mm. Body color in alcohol grey. Integumentary granules fine and uniform. 8 – 10 granules between setae p 1 on Abd. V. Dorsal chaetotaxy of head, thorax and abdomen as in Figs 1, 3 and 4. Ventral cephalic chaetotaxy (after Fjellberg, 1999) with 6 proximal, 4 basomedian, 5 basolateral, and 3 postlabial setae (Fig. 10). Th. I with 3 + 3 setae. Th. II with m 2 and m 6. Th. III without m 2 and with m 6. Sternal setae absent. Abd. IV plurichaetotic, ratio p 5 (s): p 6 as 1.7 – 1.9: 1. Ant. I with 7 setae, without p seta. Ant. II with 13 setae. Ant. III with microsensillum (ms) on ventral side, Ant. III organ with 2 short rods in separate foveae and 2 guard sensilla. Ant. IV with simple subapical bulb and 8 – 10 (mostly nine, three outer and six inner) dorsolateral sensilla, microsensillum (ms), i seta and subapical organite (os), ventral file with 30 – 55 short and pointed setae (Figs 7 – 9). Eyes 8 + 8 (Figs 1 – 2). Postantennal organ with 4 lobes, subequal in diameter (about 0.85 – 0.95) to nearest eye, accessory tubercle absent (Fig. 2). Labrum without papillae on distal margin, setal formula as 4 / 5, 5, 4, setae in anterior row considerably longer than other setae (Fig. 12). Labial palp with 5 papillae (A – E) (after Fjellberg, 1998 / 99), guard setae a 1, b 1 – 4, d 2 – 4, e 1 – 6 present; lateral process developed (Fig. 15). Maxilla with lamellae 1, 2, 4 and 5 distinctly longer than maxillary teeth, lamella 1 with denticles on inner side and knobbed denticles on the middle part of outer side; lamella 2 with long marginal filaments and no denticles, lamella 3 distinctly shorter than maxillary teeth, with short marginal filaments; lamella 4 with denticles on inner side and knobbed denticles on outer side, dorsally with marginal filaments; lamella 5 with small marginal denticles on basal half of inner side, with marginal filaments on ventral side and on apical half of dorsal side; lamella 6 shorter than maxillary teeth, without denticles and filaments (Figs 13 – 14). Maxillary outer lobe with one sublobal hair (Fig. 5). Unguis with 1 inner tooth at 1 / 2 distance of its inner edge and 2 pairs of lateral teeth. Unguiculus with broad basal lamella, tip of apical filament reaching 1 / 2 distance of inner edge of unguis. Tibiotarsus without distinctly differentiated tenent hair, foot complex of hind leg shown in Fig. 18. Number of setae on each segment of legs as in Table 1. Ventral tube short, with 4 + 4 lateral setae (Fig. 16). Tenaculum with 4 + 4 teeth (Fig. 17). Manubrium with 9 – 10 (mostly 9) posterior setae on each side (Fig. 6). Dens with 6 posterior setae. Mucro distinctly carinated, with small apical outer lamellae, without inner lamellae, apex up-turned (Fig. 6). Ratio dens: mucro as 2.8 (2.5 – 3.0): 1. Anal lobes with 12 – 19 setae. Two anal spines on Abd. VI short and curved, subequal to their basal papillae (Figs 4 and 11).	en	Jiang, Jigang, Yin, Wenying (2010): Two new Hypogastrura species (Hypogastruridae, Collembola) from China. Zootaxa 2542 (1): 48-60, DOI: 10.11646/zootaxa.2542.1.4, URL: https://biotaxa.org/Zootaxa/article/view/zootaxa.2542.1.4
03FB2749FFA46636B08F6637FE32FAA5.taxon	biology_ecology	Ecology. Found in soil under decaying leaves.	en	Jiang, Jigang, Yin, Wenying (2010): Two new Hypogastrura species (Hypogastruridae, Collembola) from China. Zootaxa 2542 (1): 48-60, DOI: 10.11646/zootaxa.2542.1.4, URL: https://biotaxa.org/Zootaxa/article/view/zootaxa.2542.1.4
03FB2749FFA46636B08F6637FE32FAA5.taxon	etymology	Etymology. The name refers to having six dental setae.	en	Jiang, Jigang, Yin, Wenying (2010): Two new Hypogastrura species (Hypogastruridae, Collembola) from China. Zootaxa 2542 (1): 48-60, DOI: 10.11646/zootaxa.2542.1.4, URL: https://biotaxa.org/Zootaxa/article/view/zootaxa.2542.1.4
03FB2749FFA46636B08F6637FE32FAA5.taxon	discussion	Remarks. Though the new species H. hexasetata has no differentiated tenent hair on tibiotarsus, it possesses most characters of the trybomi group. The new species is very close to H. hargrovei Skarży ṅski, 2007. They share highly modified mouthparts, postantennal organ slightly smaller than neighboring eyes, maxillary outer lobe with only one sublobal hair and dens with 6. The new species can be discriminated from the latter as follows: head ventrally with 3 + 3 axial setae, Ant. IV with a strong ventral file (30 – 55 setae), Th. II with m 2 setae, tibiotarsus without differentiated tenent hair. In H. hargrovei, head ventrally has 2 + 2 axial setae, Ant. IV has a weak ventrally file (about 10 setae), Th. II has not m 2 setae, tibiotarsus with differentiated tenent hair. The new species is also close to H. maxillosa Babenko, 1994. They share maxillary lamellae 1, 2, 4, 5 prominently longer than maxillary teeth, unguis with an inner tooth and 2 pairs of lateral teeth, mucro with outer lamella. H. hexasetata sp. nov. can be separated from the latter by tibiotarsi I – III having not differentiated tenent hairs, 6 setae on dens, m 2 seta on Th. II present, Ant. IV usually having 9 dorsal sensilla. In H. maxillosa, tibiotarsi I – III each has one differentiated pointed tenent hair, 7 setae on dens, no m 2 setae on Th. II, Ant. IV dorsally with eight sensilla. The new species differs from other members of the trybomi group by having highly modified mouthparts and by having only 1 sublobal hair on the maxillary outer lobe. Though the information of mouthparts of H. ireneae and H. maynardi is unavailable, H. hexasetata sp. nov. is easy to be distinguished due to small postantennal organ (slightly smaller than nearest eye), while H. ireneae and H. maynardi have large ones (about twice as large as nearest eye) (Skarży ṅski, 2007). The new species is also similar to H. coprophila Stach, 1960 from Afghanistan in having body setae hardly differentiated, tibiotarsi without differentiated tenent hairs, mucro with outer lamella. It differs from H. coprophila by having 6 setae on dens, 8 – 10 sensilla on Ant. IV and 2 pairs of lateral teeth on unguis (versus seven setae on dens, 5 sensilla on Ant. IV and no lateral tooth on unguis in H. coprophila). For difference from other species of the group see the key and Table 3.	en	Jiang, Jigang, Yin, Wenying (2010): Two new Hypogastrura species (Hypogastruridae, Collembola) from China. Zootaxa 2542 (1): 48-60, DOI: 10.11646/zootaxa.2542.1.4, URL: https://biotaxa.org/Zootaxa/article/view/zootaxa.2542.1.4
03FB2749FFA06635B08F6793FF51F812.taxon	description	Figs 19 – 36, Tab. 2 and 3	en	Jiang, Jigang, Yin, Wenying (2010): Two new Hypogastrura species (Hypogastruridae, Collembola) from China. Zootaxa 2542 (1): 48-60, DOI: 10.11646/zootaxa.2542.1.4, URL: https://biotaxa.org/Zootaxa/article/view/zootaxa.2542.1.4
03FB2749FFA06635B08F6793FF51F812.taxon	materials_examined	Type material. Holotype male, China, Jiangsu Province, Suzhou City, Huqiu Mountain. 30 m alt. 31. viii. 1998, Lijun Zhao coll. Paratypes, 3 females and 1 male, same data as the holotype. All types mounted on slide and deposited in Institute of Plant Physiology & Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences.	en	Jiang, Jigang, Yin, Wenying (2010): Two new Hypogastrura species (Hypogastruridae, Collembola) from China. Zootaxa 2542 (1): 48-60, DOI: 10.11646/zootaxa.2542.1.4, URL: https://biotaxa.org/Zootaxa/article/view/zootaxa.2542.1.4
03FB2749FFA06635B08F6793FF51F812.taxon	description	Description. Body length up to 1.6 mm. Body color in alcohol blackish grey. Integumentary granules fine and uniform. Dorsum of Abd. V with 10 – 12 granules between setae p 1. Dorsal chaetotaxy of head, thorax and abdomen as in Figs 19 – 21. Body setae weakly differentiated. Ventral cephalic chaetotaxy (after Fjellberg, 1998 / 99) with 6 proximal, 4 basomedian, 5 basolateral, and 2 postlabial setae (Fig. 28). Th. I with 3 + 3 setae. Th. II setae m 2 and m 6 present. Th. III with m 6 present and m 2 absent. No setae on thoracic sternum. Abd. I – III respectively with three rows of setae, m 1 always absent, m 5 usually absent. Abd. IV polychaetotic, without a 5 and m 2. Abd. V with sensillum p 3, an additional seta a 0 always present on the body axis between a 1 setae (Fig. 21). Ant. I with 7 setae and without p seta. Ant. II with 13 setae. Ant. III with microsensillum (ms) on ventral side, Ant. III organ with 2 short rods in separate foveae and 2 guard sensilla. Ant. IV with simple subapical bulb and 10 (4 outer and 6 inner) dorsolateral sensilla, i seta, microsensillum (ms) and subapical organite (os) (Figs 24 – 25), ventral file with 10 – 15 short and pointed setae. Eyes 8 + 8. Postantennal organ with 4 lobes, diameter about 0.9 – 1.2 times as large as nearest eye, accessory tubercle absent (Figs 22 – 23). Labral setae 4 / 5, 5, 4 (Fig. 26). Labial palp with only 4 papillae (A, B, D, E), papilla C absent, guard setae a 1, b 1 – 4, d 2 – 4, e 1 – 6 present, lateral process small (Fig. 29). Mandible with basal molar plate, right mandible with 5 apical teeth (Fig. 30), left mandible with 4 apical teeth. Maxilla lamella 1 with denticles on inner side, without filaments; lamellae 2 and 3 with long marginal filaments and no denticles; lamellae 4 and 5 with denticles on inner side, lamella 4 with dorsal marginal filaments, lamella 5 with dorsal and ventral marginal filaments; lamella 6 with fine denticles; lamellae 1, 2, 4, 5, 6 extending beyond maxillary teeth, only lamella 3 shorter than maxillary teeth (Fig. 27). Maxillary outer lobe with 1 sublobal hair (Fig. 31). Unguis developed, with 1 inner tooth at 1 / 2 distance and without lateral teeth. Unguiculus with broad basal lamella, tip of apical filament reaching 2 / 3 distance of inner edge of unguis. Tibiotarsus with 1 differentiated pointed tenent hair, foot complex of hind leg shown in Fig. 36. Number of setae on each segment of legs as in Table 2. Ventral tube with 4 + 4 setae. Tenaculum with 4 + 4 teeth (Fig. 33). Manubrium with 10 posterior setae on each side (Fig. 35). Dens with 7 posterior setae. Mucro slightly curved, without inner and outer lamellae, with distinct carina (Figs 34 – 35). Ratio of dens: mucro as 1.5 (1.3 – 1.8): 1; Male genital plate shown in Fig. 32. Two anal spines on Abd. VI slim and curved, longer than basal papillae, ratio of their lengths as 1.8: 1 (Fig. 21).	en	Jiang, Jigang, Yin, Wenying (2010): Two new Hypogastrura species (Hypogastruridae, Collembola) from China. Zootaxa 2542 (1): 48-60, DOI: 10.11646/zootaxa.2542.1.4, URL: https://biotaxa.org/Zootaxa/article/view/zootaxa.2542.1.4
03FB2749FFA06635B08F6793FF51F812.taxon	biology_ecology	Ecology. Found in soil under tiles and leaves.	en	Jiang, Jigang, Yin, Wenying (2010): Two new Hypogastrura species (Hypogastruridae, Collembola) from China. Zootaxa 2542 (1): 48-60, DOI: 10.11646/zootaxa.2542.1.4, URL: https://biotaxa.org/Zootaxa/article/view/zootaxa.2542.1.4
03FB2749FFA06635B08F6793FF51F812.taxon	etymology	Etymology. The name refers to the seven setae on dens.	en	Jiang, Jigang, Yin, Wenying (2010): Two new Hypogastrura species (Hypogastruridae, Collembola) from China. Zootaxa 2542 (1): 48-60, DOI: 10.11646/zootaxa.2542.1.4, URL: https://biotaxa.org/Zootaxa/article/view/zootaxa.2542.1.4
03FB2749FFA06635B08F6793FF51F812.taxon	discussion	Remarks. Hypogastrura heptasetata sp. nov. belongs to trybomi group. It is characterized by highly modified mouthparts and by having a seta a 0 on Abd. V. It is close to H. hargrovei Skarży ṅski, 2007 from USA in having highly modified maxilla, 2 + 2 axial postlabial setae, only 1 sublobal hair on maxillary outer lobe, labial palp with papilla C absent, and 1 pointed tenent hair on tibiotarsus. H. heptasetata sp. nov. differs from H. hargrovei in having Th. II seta m 2, 7 setae on dens and 10 sensilla on Ant. IV, while H. hargrovei lacks setae m 2 on Th. II, has 6 setae on dens and 6 sensilla on Ant. IV. H. heptasetata sp. nov. is also similar to H. hexasetata sp. nov. from Hubei Province (China) and H. maxillosa from Siberia (Russia) in sharing strongly modified maxilla, and weakly differentiated body setae. H. heptasetata sp. nov. differs from H. hexasetata sp. nov. by having a differentiated tenent hair on tibiotarsus, 7 dorsal setae on dens, unguis without lateral teeth, papilla C of labial palp absent, 2 axial ventral setae on head. While in H. hexasetata sp. nov., tibiotarsus has no differentiated tenent hair, 6 dorsal setae on dens, 2 pairs of lateral teeth on unguis, papilla C of labial palp present, head with 3 axial postlabial setae. Moreover, H. heptasetata sp. nov. can be distinguished from H. maxillosa by having Th. II setae m 2, unguis without lateral teeth, papilla C of labial palp absent and lamella 6 of maxilla longer than maxillary teeth. In H. maxillosa, Th. II is lacks m 2, the unguis have lateral teeth, labial palp papilla C is present and lamella 6 of maxilla is shorter than maxillary teeth. H. heptasetata sp. nov. differs from H. ireneae and H. maynardi in having small postantennal organ (H. ireneae and H. maynardi have postantennal organ about twice as large as nearest eye). In Table 3, a summary of diagnostic characters separating H. heptasetata sp. nov. from other related species of the trybomi group is given.	en	Jiang, Jigang, Yin, Wenying (2010): Two new Hypogastrura species (Hypogastruridae, Collembola) from China. Zootaxa 2542 (1): 48-60, DOI: 10.11646/zootaxa.2542.1.4, URL: https://biotaxa.org/Zootaxa/article/view/zootaxa.2542.1.4
