Homidia wanensis, Pan & Ma, 2021

Pan, Zhi-Xiang & Ma, Yi-Tong, 2021, Two new species of Homidia (Collembola: Entomobryidae) from Eastern China, Zootaxa 4995 (1), pp. 179-194 : 187-190

publication ID	https://doi.org/ 10.11646/zootaxa.4995.1.11
publication LSID	lsid:zoobank.org:pub:8880CC3F-FC50-4CF9-86F0-4448B2C675BD
persistent identifier	https://treatment.plazi.org/id/564EC031-2523-FFBA-E7CE-9DA4FE32FE44
treatment provided by	Plazi
scientific name	Homidia wanensis
status	sp. nov.

Treatment

Homidia wanensis View in CoL sp. nov.

Figs 31−58 View FIGURES 31−32 View FIGURES 33−40 View FIGURE 41 View FIGURES 42−43 View FIGURES 44−50 View FIGURES 51−52 View FIGURES 53−58 , Table 2

Types. Holotype: adult female on slide, China, Anhui Province, Huangshan City, Huangshan District, Tangkou Town , Outside of Ticket office of Jade Valley , 30°06′55″N, 118°13′04″E, altitude 393 m, 18, July, 2018, collection number: 1188, by Yitong MA with entomological aspirator GoogleMaps . Paratypes: One adult female on slide, same data as holotype GoogleMaps ; two adult females on slides, China, Anhui Province, Huangshan City, Huangshan District, Tangkou Town , Monkey Valley , 30°03′56″N, 118°9′24″E, altitude 477 m, 20, July, 2018, collection number: 1189, by Yitong MA with entomological aspirator. All deposited in NTU GoogleMaps .

Description. Body length up to 2.00 mm, holotype 1.85 mm. Colour pattern as in Figs 31–32 View FIGURES 31−32 : back ground colour pale white; distal part of Ant. I, Ant. II−IV blackish violet; eye patches dark blue; blue pigment scattered on tibiotarsi and lateral part of Abd. IV; Abd. IV with a narrow irregular transverse band posteriorly.

Antenna 3.27−3.43 times length of cephalic diagonal, 0.60−0.62 times body length; antennal segment ratio I: II: III: IV = 1: 1.41−1.87: 1.17−1.40: 2.17−2.60. Apical bulb of Ant. IV bilobed ( Fig. 33 View FIGURES 33−40 ). Sensory organ of Ant. III as 2 long and 1 short rods ( Fig. 34 View FIGURES 33−40 ). Sensory organ of Ant. II as 2 rods ( Fig. 35 View FIGURES 33−40 ). Ant. I with 3 dorsal and 4 ventral basal smooth spiny chaetae ( Fig. 36 View FIGURES 33−40 ). Eyes 8 + 8, G and H smaller than others, interocular chaetae with mes p, r, and t. Dorsal cephalic chaetotaxy with 4 antennal (An), 5 median (an additional mac between M 2 and M 3) and 8 sutural (S) mac ( Fig. 37 View FIGURES 33−40 ). Prelabral and labral chaetae as 4/5, 5, 4, all smooth, labral papillae absent ( Fig. 38 View FIGURES 33−40 ). Basal chaeta of maxillary outer lobe thin, subequal to apical one; sublobal plate with 3 smooth chaeta-like processes ( Fig. 39 View FIGURES 33−40 ). Lateral process (l.p.) of labial papilla E differentiated, as thick as normal chaeta, with tip not reaching apex of papilla E ( Fig. 40 View FIGURES 33−40 ). Chaetal formula of labial base as MReL1L2, chaetae M, R, L1 and L2 ciliate, L1 sometimes smooth, R rarely absent, R/M as 0.41−0.50; some post-labial chaetae slightly expanded leaflike ( Figs 41−43 View FIGURE 41 View FIGURES 42−43 ).

Th. II ( Fig. 44 View FIGURES 44−50 ) with 4 medio-medial (m1, m2, m2i, m2i2), 3 medio-sublateral (m4, m4i, m4p), 37−38 posterior mac. Th. III with 53−54 mac and 2 se. Pseudopores on coxa I−III as 2, 4, 1, respectively; coxal macrochaetal for- mula as 3/4+1, 3/4+2 ( Figs 45−47 View FIGURES 44−50 ). Trochanteral organ ( Fig. 48 View FIGURES 44−50 ) with 53 smooth spiny chaetae. Tenent hair capitate and shorter than inner edge of unguis in length. Unguis ( Fig. 49 View FIGURES 44−50 ) with 4 inner teeth, basal pair located 0.40−0.41 distance from base of inner edge of unguis, distal unpaired teeth inserted at 0.65−0.67 and 0.85−0.86 distance from base, respectively. Unguiculus lanceolate, outer edge slightly serrate.

Range of Abd. IV length as 7.13−10.00 times dorsal axial length of Abd. III. Chaetotaxy Abd. I−III as in Fig. 50 View FIGURES 44−50 . Abd. I with 11 (a1, a1a, a2, a3, a5, m2−4, m2i, m4i, m4p), ms antero-external to sens. Abd. II with 6 (a2, a3, m3, m3e, m3ea, m3ep) central, 1 (m5) lateral mac and 2 se. Abd. III with 2 (a2, m3) central and 4 (am6, pm6, m7a, p6) lateral mac, 1ms and 2 se. Abd. IV ( Fig. 51 View FIGURES 51−52 ) with about 75 elongate and 2 normal se, anteriorly with 12−13 mac arranged in irregular transverse row, posteriorly with 7−9 (A4−6, B4−6, Ae7 always present, Ae6 and an un- known mac sometimes present) central mac, laterally with 21−29 mac. Abd. V ( Fig. 52 View FIGURES 51−52 ) with 3 se and middle se postero-external to m3. Anterior face of ventral tube with 27−40 ciliate chaetae, 3+3 of them as mac, line connect- ing proximal (Pr) and external-distal (Ed) mac oblique to median furrow ( Fig. 53 View FIGURES 53−58 ); posterior face with 5 or 7 distal smooth and numerous ciliate chaetae; lateral flap not seen wholly ( Fig. 54 View FIGURES 53−58 ). Manubrial plaque dorsally with 14−17 ciliate chaetae and 3 pseudopores ( Fig. 55 View FIGURES 53−58 ); ventrally with 61−62 ciliate chaetae on each side ( Fig. 56 View FIGURES 53−58 ). Dens with 83 smooth inner spines, basal chaetae not clearly seen ( Fig. 57 View FIGURES 53−58 ). Mucro bidentate with subapical tooth larger than apical one; tip of basal spine slightly exceeding apex of subapical tooth; distal smooth section of dens shorter than mucro in length ( Fig. 58 View FIGURES 53−58 ).

Ecology. Found in rotten leaves, mainly composed of Camellia japonica .

Etymology. Named after its locality: Anhui Province, which is abbreviated as Wan.

Remarks. The new species can be easily distinguished from H. hangzhouensis sp. nov. by having reduced blue pigment on body, in combination with having some posterior labial chaetae slightly expanded and leaflike. Among all known species of the genus, only six species have leaflike labial or post-labial chaetae: H. apigmenta Shi, Pan and Zhang, 2010 , H. latifolia Chen and Li, 1999 , H. polyseta Chen, 1998 , H. qimenensis Yi and Chen, 1999 , H. triangulimacula Pan and Shi, 2015 , H. ziguiensis Jia, Chen and Christiansen, 2003 . The new species is most similar to H. apigmenta and H. triangulimacula in colour pattern, but can be discriminated from the latter two species by labial chaetae and other characters. It is also similar to H. phjongjangica Szeptycki, 1973 in colour pattern, smooth chaeta e on labial base and posterior macrochaetae on Abd. IV, but macrochaetae on Abd. I and post-labial chaetae are different ( Table 2).