Pogonognathellus mai, Wang & Yu & Zhang, 2013

Wang, Tianle, Yu, Daoyuan & Zhang, Feng, 2013, Two new species of Pogonognathellus (Collembola: Tomoceridae) from China, with a discussion of East Asian species, Journal of Natural History (J. Nat. Hist.) 47 (17 - 18), pp. 1243-1255 : 1249-1253

publication ID	https://doi.org/ 10.1080/00222933.2012.752541
DOI	https://doi.org/10.5281/zenodo.4814950
persistent identifier	https://treatment.plazi.org/id/2B568781-A674-4C51-E576-FDDDFCBC383F
treatment provided by	Carolina
scientific name	Pogonognathellus mai
status	sp. nov.

Treatment

Pogonognathellus mai View in CoL sp. nov.

( Figures 1B View Figure 1 , 5 View Figure 5 , 6 View Figure 6 , 7 View Figure 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 View Figure 1 ).

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 View Figure 5 ). Molar plates distally with tapered tooth on the left one and hollow on the right one ( Figure 5B View Figure 5 ). Maxillary beard-like appendix not distinct ( Figure 5C View Figure 5 ).

Dorsal chaetatoxy. Macrochaetotaxy as in Figures 5D View Figure 5 and 6A View Figure 6 . Dorsal head with two, four anterior and two posterior macrochaetae, and 4 + 4 posterior marginal setae ( Figure 5D View Figure 5 ). Tergal macrochaetae with, but bothriotricha without, guard microchaeta. Anterior macrochaeta on Abd. IV absent ( Figure 6A View Figure 6 ).

Legs. Trochanteral organ reduced to one, one slender spiny setae. Tibiotarsal blunt setae as zero, zero, two ( Figure 6B View Figure 6 ). 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 View Figure 6 ).

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 View Figure 7 ). Tenaculum with 4 + 4 teeth and corpus with one seta longer than rami ( Figure 7B View Figure 7 ). 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 View Figure 7 ). 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 View Figure 7 ).

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.