Pogonognathellus mai Wang & Yu & Zhang 2013, sp. nov.
Creators: name: Wang, Tianle
name: Yu, Daoyuan
name: Zhang, Feng
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Collembola
Entomobryomorpha
Tomoceridae
Pogonognathellus
Pogonognathellus mai

description: Pogonognathellus mai sp. nov.
(Figures 1B, 5, 6, 7)
Description
Body length. Up to 3.4 mm.
Body colour. Scales brown. Ground colour yellow. Ant. III and IV light brown, darker at tips. Eye patches black and pigment expanding to encircling antennal bases. Venter of Th. I and base of front legs dark blue. Base of mid and hind legs diffusely pigmented (Figure 1B).
Head. Antennae short, about half the length of body, antennal length ratio as I: II: III: IV = 1.0: 1.7: 6.5–7.3: 1.3. Ommatidia 6 + 6. Labral setae four / five, five, four, distal four thicker, four marginal papillae with rather blunt tips, lateral two slightly stronger than medial ones (Figure 5A). Molar plates distally with tapered tooth on the left one and hollow on the right one (Figure 5B). Maxillary beard-like appendix not distinct (Figure 5C).
Dorsal chaetatoxy. Macrochaetotaxy as in Figures 5D and 6A. Dorsal head with two, four anterior and two posterior macrochaetae, and 4 + 4 posterior marginal setae (Figure 5D). Tergal macrochaetae with, but bothriotricha without, guard microchaeta. Anterior macrochaeta on Abd. IV absent (Figure 6A).
Legs. Trochanteral organ reduced to one, one slender spiny setae. Tibiotarsal blunt setae as zero, zero, two (Figure 6B). Tenent hair shorter than inner side of unguis, apically spathulate. Unguis curved, with four, four, four inner teeth, pseudonychia well developed. Unguiculus with one inner tooth (Figure 6C).
Abdominal appendages. Ventral tube covered by scales and setae both anteriorly and posteriorly, each side of anterior face with about 30 setae, three of which larger than others (Figure 7A). Tenaculum with 4 + 4 teeth and corpus with one seta longer than rami (Figure 7B). Furcula ratio as 5.4: 5.6–6.5: 1.0. Manubrium scaled both dorsally and ventrally, each lateral row with 12 strong setae. Inner basal scales of dentes pointed and smooth. Dental spine formula as II / 5–6, II. Spines all simple, with irregular longitudinal streaks, basal two pairs slender and a bit longer than terminal ones (Figure 7C). Mucro stout, basal two teeth close to each other, inner basal tooth located about one-seventh length of mucro from base, apical tooth slightly smaller than subapical tooth, dorsal lamella with five–seven intermittent teeth (Figure 7D).
Types
Female holotype and female paratype on slides and three in alcohol in NJU. Location: Erdaobaihe Town, Antu County, Yanbian Korean Autonomous Prefecture, Jilin Province, China. In forest litter. Collector: CHEN Jianxiu, MA Yitong and YU Daoyuan.
Etymology
Named after Mr MA. Yitong who helped to collect type specimens.
Remarks
Pogononathellus mai sp. nov. is most similar to Japanese species P. beckeri in dental spines and stout mucronal shape, but the absence of distinct beard-like appendix, the different colour pattern, one seta on corpus of tenaculum and four, four, four ungual teeth indicate that they are different. It is also similar to P. heterochros sp. nov., but is significantly different from it in its smaller body size, relatively shorter antennae, shapes of unguis and mucro, and distinct colour pattern.
description: Published as part of Wang, Tianle, Yu, Daoyuan & Zhang, Feng, 2013, Two new species of Pogonognathellus (Collembola: Tomoceridae) from China, with a discussion of East Asian species, pp. 1243-1255 in Journal of Natural History (J. Nat. Hist.) (J. Nat. Hist.) 47 (17 - 18) on pages 1249-1253, DOI: 10.1080/00222933.2012.752541, http://zenodo.org/record/4631135