Homidia maijiensis Zhou & Ma 2022, sp. nov.
Creators: name: Zhou, Rong
name: Ma, Yitong
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Collembola
Entomobryomorpha
Entomobryidae
Homidia
Homidia maijiensis

description: Homidia maijiensis sp. nov.
Figs 60−85, 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. 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).
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). Distal part of Ant. III with three rods (Fig. 63). Distal part of Ant. II with two rods (Fig. 64). Ant. I with three dorsal, four ventral basal smooth spiny chaetae (Fig. 65). 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). Prelabral and labral chaetae as 4/5, 5, 4, prelabral chaetae ciliate, other smooth, four labral papillae with one minute denticle each (Fig. 67). Lateral process (l.p.) of labial papilla E differentiated, as thick as normal chaeta with tip not reaching apex of papilla E (Fig. 68). Chaetal formula of labial base as MREL1L2, all ciliate, E rarely smooth, R/M as 0.55−0.73 (Fig. 69). Subapical chaeta of maxillary outer lobe thin, subequal to apical one; three smooth hairs on sublobal plate (Fig. 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). Pseudopores on coxa I−III as 1, 2−4, 1, respectively; coxal macrochaetal formula as 3/4+1, 3/4+2 (Figs 72−74). Trochanteral organ with 49−66 smooth spiny chaetae (Fig. 75). 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).
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). 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). Abd. V with three se (Fig. 79). 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); posterior face with four distal smooth and numerous ciliate chaetae (Fig. 81); lateral flap not seen wholly. Manubrial plate dorsally with 9−13 ciliate chaetae and three pseudopores (Fig. 82); ventrally with 38 ciliate chaetae on each side (Fig. 83). Dens with 58−80 smooth inner spines (Fig. 84). 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).
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).
description: Published as part of Zhou, Rong & Ma, Yitong, 2022, Three new species of Entomobryinae (Collembola, Entomobryidae) from Gansu China, pp. 371-392 in Zootaxa 5155 (3) on pages 381-388, DOI: 10.11646/zootaxa.5155.3.4, http://zenodo.org/record/6795339