Homidia maijiensis, Zhou & Ma, 2022

Zhou, Rong & Ma, Yitong, 2022, Three new species of Entomobryinae (Collembola, Entomobryidae) from Gansu China, Zootaxa 5155 (3), pp. 371-392 : 381-388

publication ID	https://doi.org/ 10.11646/zootaxa.5155.3.4
publication LSID	lsid:zoobank.org:pub:08B0B707-3DE5-4320-A215-55E8B2F05829
DOI	https://doi.org/10.5281/zenodo.6795371
persistent identifier	https://treatment.plazi.org/id/03E887D0-FFCF-FFAA-1593-F8CCD327F90E
treatment provided by	Plazi
scientific name	Homidia maijiensis
status	sp. nov.

Treatment

Homidia maijiensis View in CoL sp. nov.

Figs 60−85 View FIGURES 60−61 View FIGURES 62−70 View FIGURES 71−77 View FIGURES 78−80 View FIGURES 81−85 , Table 3 View TABLE 3

Types. Holotype: adult female on slide, China, Gansu Province, Tianshui City, Maiji District, Xiaolongshan National Forest Park , Taohuagou Scenic Spot , 34°18′52″N, 106°34′17″E, altitude 1,208 m, 17, June, 2019, collection number: 1213, by Yitong MA with entomological aspirator GoogleMaps . Paratypes: Three adult females on slides, same data as holotype. All deposited in NTU.

Description. Body length up to 2.20 mm. Ground colour pale yellowgreen in ethanol. Eye patches dark blue. Distal part of Ant. III, Ant. IV and tibiotarsi blue pigmented. Coxae and lateral part of Abd. IV with scattered pigment. Posterior part of Abd. IV and V with an irregular transverse stripes, respectively ( Figs 60−61 View FIGURES 60−61 ).

Antenna 0.67−0.68 times body length; antennal segment ratio as I: II: III: IV = 1: 1.41−1.75: 1.18−1.83: 1.82−2.92. Apical bulb of Ant. IV bilobed ( Fig. 62 View FIGURES 62−70 ). Distal part of Ant. III with three rods ( Fig. 63 View FIGURES 62−70 ). Distal part of Ant. II with two rods ( Fig. 64 View FIGURES 62−70 ). Ant. I with three dorsal, four ventral basal smooth spiny chaetae ( Fig. 65 View FIGURES 62−70 ). Eyes 8+8, G and H smaller than others, interocular chaetae as p, s, t mes. Dorsal cephalic chaetotaxy with four antennal (An), five median (an additional mac between M2 and M3) and eight sutural (S) mac ( Fig. 66 View FIGURES 62−70 ). Prelabral and labral chaetae as 4/5, 5, 4, prelabral chaetae ciliate, other smooth, four labral papillae with one minute denticle each ( Fig. 67 View FIGURES 62−70 ). Lateral process (l.p.) of labial papilla E differentiated, as thick as normal chaeta with tip not reaching apex of papilla E ( Fig. 68 View FIGURES 62−70 ). Chaetal formula of labial base as MREL1L2, all ciliate, E rarely smooth, R/M as 0.55−0.73 ( Fig. 69 View FIGURES 62−70 ). Subapical chaeta of maxillary outer lobe thin, subequal to apical one; three smooth hairs on sublobal plate ( Fig. 70 View FIGURES 62−70 ).

Th. II with four (m1, m2, m2i, m2i2) mac on T1 area, five (a5, m4, m4i, m4p, m5) mac on T2 area, 29−35 posterior mac, one ms and two se. Th. III with 40−43 mac and two se ( Fig. 71 View FIGURES 71−77 ). Pseudopores on coxa I−III as 1, 2−4, 1, respectively; coxal macrochaetal formula as 3/4+1, 3/4+2 ( Figs 72−74 View FIGURES 71−77 ). Trochanteral organ with 49−66 smooth spiny chaetae ( Fig. 75 View FIGURES 71−77 ). Tenent hair thick with its tip clavate, almost equal to than inner edge of unguis in length. Unguis with four inner teeth, basal pair located 0.47−0.51 distance from base of inner edge of unguis, distal unpaired two respectively at 0.70−0.72 and 0.84−0.85 distance from base. Unguiculus lanceolate, outer edge slightly serrate ( Fig. 76 View FIGURES 71−77 ).

Abd. IV 5.38−6.10 times Abd. III in dorsal axial length. Abd. I with 11 (a1, a1a, a2, a3, a5, m2−4, m2i, m4i, m4p), ms antero-external to se. Abd. II with two (a2, a3) mac on A1 area, four (m3, m3e, m3ea, m3ep) mac on A2 area, one (m5) lateral mac and two se. Abd. III with one (a2) mac on A4 area, one (m3) mac on A5 area and four (am6, pm6, m7a, p6) lateral mac, one ms and two se ( Fig. 77 View FIGURES 71−77 ). Abd. IV anterior with 6−9 mac arranged in irregular transverse row, posterior with 6−7 (A5−6, B5−6, Ae7, Ae5pp) central mac, lateral with 19−21 mac ( Fig. 78 View FIGURES 78−80 ). Abd. V with three se ( Fig. 79 View FIGURES 78−80 ). Anterior face of ventral tube with 35−36 ciliate chaetae, line connecting proximal (Pr) and external-distal (Ed) mac oblique to median furrow ( Fig. 80 View FIGURES 78−80 ); posterior face with four distal smooth and numerous ciliate chaetae ( Fig. 81 View FIGURES 81−85 ); lateral flap not seen wholly. Manubrial plate dorsally with 9−13 ciliate chaetae and three pseudopores ( Fig. 82 View FIGURES 81−85 ); ventrally with 38 ciliate chaetae on each side ( Fig. 83 View FIGURES 81−85 ). Dens with 58−80 smooth inner spines ( Fig. 84 View FIGURES 81−85 ). Mucro bidentate with subapical tooth larger than apical one; tip of basal spine slightly exceeding apex of subapical tooth; distal smooth of dens shorter than mucro in length ( Fig. 85 View FIGURES 81−85 ).

Ecology. Found in rotten leaf, mainly composed of Pinus tabuliformis, Betula Platyphylla and Quercus variabilis .

Etymology. Named after its locality: Maiji District.

Remarks. The new species is characterised for its yellowgreen ground colour, labial base chaetae and dental spines. It is similar to H. bilineata Lee & Park, 1984 , H. phjongjangica Szeptycki, 1973 and H. rosannae Jordana & Baquero, 2010 in colour pattern, but there are some differences between them, such as, labial base chaetae, macrochaetae on Abd. I and dental spines. It is also similar to H. apigmenta Shi, Pan & Zhang, 2010 , H. similis Szeptycki, 1973 , H. subcingula Denis, 1948 , and H. unichaeta Pan, Shi & Zhang, 2010 in macrochaetotaxy of Abd. II−IV, but can be separated from them by labral papillae, inner teeth on unguis, macrochaetotaxy on Abd. IV and other characters ( Table 3 View TABLE 3 ).