taxonID	type	description	language	source
BD43911EC4A25E1EB3E34E88807716E8.taxon	description	Description. Mature females (i. e. from the third instar onwards; measurements and statistics in Table 2). Body cylindrical, orange with minute red eyes present in live specimens; colours disappearing soon after mounting in Hoyer's medium. Echiniscus - type cephalic papillae (secondary clavae) and (primary) clavae; cirri growing out from bulbous cirrophores (Figure 1 A). The body appendage configuration is A-C-D-Dd-E, with all trunk appendages formed as spines or spicules. All usual trunk appendages always symmetrical and smooth. Spine Cd rudimentarily developed in two females (one with an asymmetrical spicule [2 µm], the other normally formed [8 µm]). Dorsal plates with the mixed type of sculpturing, with an evident layer of endocuticular pillars visible as black dots under PCM, and an upper layer of greyish epicuticular matrix forming the ornamented pattern together with pseudopores, enhanced as dark belts on the anterior portions of the paired segmental plates (Fig. 1 A). Generally, the epicuticular sculpture is poorly developed and gives way to large pillars, especially on the cephalic and scapular plates, and also on the central portion of the median plate I and centroposterior portions of segmental plates. The cephalic plate is relatively large whereas the cervical (neck) plate is barely demarcated from the scapular plate, formed only as thin grey belt without pillars. The scapular plate large, with additional lateral sutures separating narrow rectangular lateral portions with poorly developed pillars. Paired segmental plates divided into a smaller, much narrower anterior and a dominant posterior part by a smooth, wide transverse stripe (Fig. 1 A). The caudal (terminal) plate with short incisions and fully developed epicuticular layer. Median plate I unipartite, whereas median plate II divided into weakly defined parts, with a wide rhomboidal smooth space between them (Fig. 1 A). Median plate III small but with a well-developed epicuticular layer. Ventral cuticle with minute endocuticular pillars distributed throughout the whole venter, and a pair of oval subcephalic (Fig. 1 C) and trapezoid genital plates. Sexpartite gonopore placed between genital plates, and a trilobed anus between legs IV. Pedal plates I-III absent, pedal plate IV developed as a dark matrix without pillars, bearing a typical dentate collar (Figure 1 A). Distinct pulvini on all legs (Fig. 1 A). A small spine on leg I (Fig. 1 E) and a papilla on leg IV present. Claws IV slightly higher than claws I-III (Table 2). External claws on all legs smooth (Figure 1 E). Internal claws with large spurs positioned at circa 1 / 3 of the claw height and bent downwards. Buccal apparatus short, with a rigid, stout tube and a spherical pharynx. Stylet supports absent. Mature males and sexually dimorphic traits (i. e. from the third instar onwards; measurements and statistics in Tables 3, 4). Generally resembling females, but a closer observation reveals two qualitative differences (body appendage configuration and dorsal plate sculpturing) and numerous morphometric dissimilarities between males and females (all summarised in Table 4). Densely punctuated areas in the central leg portions present (Fig. 2 A). Male genital plates are always clearly visible (of identical shape as female plates), and dark densely arranged pillars are present in the entire genital zone, extending between the plates (Fig. 1 D). Juveniles (i. e. the second instar, measurements and statistics in Table 5). Clearly smaller than adult females and males, with the body appendage configuration A-C-D-Dd-E. Endocuticular pillars well developed in all plates, the largest pillars present in the posterior portion of the scapular plate and in the central part of the caudal (terminal) plate. Epicuticular ornamented pattern absent, although lighter and darker parts of the scapular plate can be distinguished under PCM (Fig. 1 B), constituting presumably the developing epicuticular layer. Larvae. Unknown. Eggs. Up to two round, yellow eggs per exuvia were found. Genetic markers and phylogenetic position. The 18 S rRNA, 28 S rRNA and ITS- 2 were characterised by single haplotypes (GenBank accession numbers: MT 106621, MT 106620, MT 106622, respectively), but three haplotypes were detected in the case of ITS- 1 (MT 106623 - 5), and five in COI (MT 106223 - 7). All three DNA-based phylogenetic reconstructions revealed E. masculinus sp. nov. as the sister species to the clade E. lineatus + E. virginicus with a maximum support (Fig. 4). The divergence between the new species and the other two congeners was notably larger in COI compared to the ITS markers (compare Fig. 4 A and 4 B, C). The differences are congruent with the p - distances (see SM. 2).	en	Gasiorek, Piotr, Voncina, Katarzyna, Michalczyk, Lukasz (2020): An overview of the sexual dimorphism in Echiniscus (Heterotardigrada, Echiniscoidea), with the description of Echiniscus masculinus sp. nov. (the virginicus complex) from Borneo. Zoosystematics and Evolution 96 (1): 103-113, DOI: http://dx.doi.org/10.3897/zse.96.49989, URL: http://dx.doi.org/10.3897/zse.96.49989
BD43911EC4A25E1EB3E34E88807716E8.taxon	etymology	Etymology. From Latin Echiniscus masculinus = male (an adjective in the nominative singular). The name underlines the presence of males in the new species, in contrast to closely related parthenogenetic E. lineatus and E. virginicus.	en	Gasiorek, Piotr, Voncina, Katarzyna, Michalczyk, Lukasz (2020): An overview of the sexual dimorphism in Echiniscus (Heterotardigrada, Echiniscoidea), with the description of Echiniscus masculinus sp. nov. (the virginicus complex) from Borneo. Zoosystematics and Evolution 96 (1): 103-113, DOI: http://dx.doi.org/10.3897/zse.96.49989, URL: http://dx.doi.org/10.3897/zse.96.49989
