Homidia hangzhouensis Pan &amp; Ma 2021, sp. nov.
Creators: name: Pan, Zhi-Xiang
name: Ma, Yi-Tong
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Collembola
Entomobryomorpha
Entomobryidae
Homidia
Homidia hangzhouensis

description: <i>Homidia hangzhouensis</i> sp. nov. Figs 2 −30, Table 1 <b>Types.</b> Holotype: adult female on slide, China, Zhejiang Province, Hangzhou City, Xiaoshan District, Xianghu Yuewangling, 30°09′20″N, 120°13′35″E, altitude 47 m, 17 July 2018, collection number: 1186, by Yitong MA with entomological aspirator. Paratypes: Five adult females on slides, same data as holotype. All deposited in NTU. <b>Description.</b> Body length up to 2.11 mm, holotype 2.11 mm. Colour pattern as in Fig. 2: back ground colour pale yellow; Ant. III and distal part of IV blue; eye patches dark blue; central part of Th. III, coxae, and hind femora with scattered blue pigment; Abd. IV and V with two and one irregular transverse bands, respectively. Antenna 2.11−2.60 times length of cephalic diagonal, 0.42−0.47 times body length; antennal segment ratio I: II: III: IV = 1: 1.50−1.56: 1.33−1.44: 2.56−3.33. Apical bulb of Ant. IV bilobed (Fig. 3). Sensory organ of Ant. III as 2 long and 1 short rods (Fig. 4). Sensory organ of Ant. II as 2 rods (Fig. 5). Ant. I with 3 dorsal and 4 ventral basal smooth spiny chaetae (Fig. 6). Eyes 8 + 8 (Fig. 8), G and H smaller than others, interocular chaetae with mes p, r, and t. Dorsal cephalic chaetotaxy (Fig. 7) with 4 antennal (An), 5 median (an additional mac between M2 and M3, the homology unclear) and 8 sutural (S) mac. Prelabral and labral chaetae as 4/5, 5, 4, all smooth, labral papillae absent (Figs 9−10). Basal chaeta of maxillary outer lobe thin, subequal to apical one; sublobal plate with 3 smooth chaeta-like processes (Fig. 11). Lateral process (l.p.) of labial papilla E differentiated, as thick as normal chaeta, with tip almost reaching apex of papilla E (Fig. 12). Chaetal formula of labial base as MRel1L2, chaetae e and smooth, others ciliate, R/M as 0.44−0.51 (Fig. 13). Th. II (Fig. 14) with 4 medio-medial (m1, m2, m2i, m2i2), 3 medio-sublateral (m4, m4i, m4p), 30−33 posterior mac, 1 ms and 2 se (ms antero-external to se). Th. III with 36 mac and 2 se. Pseudopores on coxa I−III (Figs 15−17) as 2, 4, 1, respectively; coxal macrochaetal formula as 3/4+1, 3/4+2. Trochanteral organ (Fig. 18) with 39−46 smooth spiny chaetae. Tenent hair capitate and shorter than inner edge of unguis. Unguis (Fig. 19) with 4 inner teeth, basal pair located 0.42−0.48 distance from base of inner edge of unguis, distal unpaired teeth inserted at 0.64−0.70 and 0.84−0.91 distance from base, respectively. Unguiculus (Figs 19−20) lanceolate, outer edge slightly serrate. Range of Abd. IV length as 7.60−10.51 times dorsal axial length of Abd. III. Chaetotaxy Abd. I-III as in Fig. 21. Abd. I with 8−10 (a1, a2, a3, a5, m2−4, m2i, m4i, m4p; a1 and a5 sometimes absent), ms antero-internal to se. Abd. II with 6 (a2, a3, m3, m3e, m3ea, m3ep) central, 1 (m5) lateral mac and 2 se. Abd. III with 1−2 (a2, m3, a2 sometimes absent) central and 4 (am6, pm6, m7a, p6) lateral mac, 1ms and 2 se. Abd. IV (Fig. 22) with about 68 elongate and 2 normal se; anteriorly with 7−10 mac arranged in irregular transverse row, posteriorly with 7−9 (A4−6, B4−6, Ae7, Ae6 and an unknown mac sometimes present) central mac, laterally with 14−20 mac. Abd. V (Fig. 23) with 3 se and middle se postero-external to m3. Anterior face of ventral tube with 22−23 ciliate chaetae, 3+3 of them as mac, line connecting proximal (Pr) and external-distal (Ed) mac oblique to median furrow (Fig. 24); posterior face with 5 distal smooth and numerous ciliate chaetae; lateral flap with 6 smooth and 8−9 ciliate chaetae (Fig. 25). Manubrial plaque dorsally with 9−14 ciliate chaetae and 2−3 pseudopores (Fig. 26); ventrally with 24−35 ciliate chaetae on each side (Fig. 27). Dens with 24−34 smooth inner spines; basal chaetae (bs1 and bs2) spiniform, bs1 shorter than bs2 (Fig. 28). 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 (Figs 29 –30). <b>Ecology.</b> Found in rotten leaves, mainly composed of <i>Mallotus apelta</i> and <i>Rhus chinensis</i>. <b>Etymology.</b> Named after its locality: Hangzhou City. <b>Remarks.</b> The new species is characterised by smooth chaetae e and l1 on labial base, two irregular transverse stripes on Abd. IV, absence of blue pigment on Ant. I−II, Abd. I−II and presence on Ant. III−IV. It is similar to the Chinese species <i>H. xianjuensis</i> Wu and Pan, 2016 in having smooth labial chaetae e and l1, colour pattern on antennae and Abd. IV, but there are great differences between them, such as, colour pattern on head and Abd. II−III, and number of mac on posterior part of Abd. IV. It is also similar to <i>H. formosana</i> Uchida, 1943 and <i>H. hexaseta</i> Pan, Shi and Zhang, 2011 in smooth chaetae e and l1 on labial base and absence of pigment on thorax but can be distinguished from the latter two species by the colour pattern on Abd. IV and other characters (Table 1).
description: Published as part of <i>Pan, Zhi-Xiang &amp; Ma, Yi-Tong, 2021, Two new species of Homidia (Collembola: Entomobryidae) from Eastern China, pp. 179-194 in Zootaxa 4995 (1)</i> on pages 180-182, DOI: 10.11646/zootaxa.4995.1.11, http://zenodo.org/record/5043515
description: {"references": ["Wu, J. &amp; Pan, Z. X. (2016) One new species of the genus Homidia (Collembola: Entomobryidae) from Zhejiang Province, with a description of the second instar larvar. Entomotaxonomia, 38 (2), 99 - 106. https: // doi. org / 10.11680 / entomotax. 2016014", "Uchida, H. (1943) On some Collembola-Arthropleona from Nippon. Bulletin of the National Science Museum, Tokyo, 8, 1 - 20.", "Pan, Z. X., Shi, S. D. &amp; Zhang, F. (2011) A new species of Homidia (Collembola: Entomobryidae) from Wenzhou, with a key to the Homidia species from Zhejiang Province. Entomotaxonomia, 33 (3), 161 - 167."]}