Pseudophanias spinicornis Inoue &amp; Nomura 2021, sp. nov.
Creators: name: Inoue, Shota
name: Nomura, Shûhei
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Staphylinidae
Pseudophanias
Pseudophanias spinicornis

description: <i>Pseudophanias spinicornis</i> sp. nov. (Figs 1–3) <b>Type material.</b> <b>HOLOTYPE:</b> ♂, " Tanintharyi Nature Reserve / (by sifting leaf litter, D4, ca. / 100m), Tanintharyi Region / [S MYANMAR] / N14°44′22″ E98°11′42″ / 16.xi.2018, S. Nomura leg. // FAUNA MYANMARICA / Staphylinidae, Pselaphinae / <i>Pseudophanias</i> sp. 1 / S. Nomura det., 2019 // HOLOTYPE (red) / ♂, <i>Pseudophanias spinicornis</i> / des. Inoue &amp; Nomura, 2021 " <b>PARATYPES:</b> 2♀♀, same data as holotype. Each paratype is pinned with the following label: " PARATYPE (yellow) / ♀, <i>Pseudophanias spinicornis</i> / des. Inoue &amp; Nomura, 2021 ". <b>Diagnosis.</b> The new species is readily distinguished from the other members of <i>Pseudophanias</i> by a combination of the following characteristics: antennomeres 7 and 10 ventrally spinose in male; pronotum densely and coarsely punctate, with small conical spine anterior to median fovea; mesotibiae and metatibiae modified in male; tergite IV with pair of short discal carinae; aedeagus asymmetrical; median lobe strongly curved in lateral view, membranous laterally, narrowed posteriorly, then broadened apically. <b>Description</b>. Male (Figs 1A and 2A, B). Body length 2.42 mm. Dorsal surface densely covered with moderately long setae. Head (HL/HW 0.94) slightly wider than long, densely and coarsely punctate; frons moderately short, with frontal rostrum about 3/4 as wide as HW, with longitudinal, shallow sulcus at middle including a glabrous fovea; vertex with pair of fovea; eyes prominent, moderately large; occipital margin in lateral view weakly concave, with dense tufts of setae; U-shaped setose sulci moderately broad, weakly connecting to eyes. Antennae elongate (Fig. 2C), length 1.31 mm; antennomeres 1 about as long as 2–3 combined; antennomeres 2–5 moniliform, successively widened towards apices; antennomeres 6–11 modified to form weak clasping in lateral view; antennomeres 6 enlarged, about as long as 1, spinose ventrally at apico-lateral; antennomeres 7–11 successively widened towards apices; antennomeres 7–10 each transverse, flattened on ventral surface; antennomeres 10 spinose ventrally at apico-lateral; antennomeres 11 largest, sub-oval. Maxillary palpi symmetrical; palpomeres 1 minute; palpomeres 2 elongate, narrowed in basal halves; palpomeres 3 small, widest at apices; palpomeres 4 fusiform. Pronotum (PL/PW 1.16) longer than wide, widest at anterior one-third, densely and coarsely punctate, with a median and pair of lateral foveae, with a small conical spine just anterior to median fovea. Elytra (EL/EW 0.69) much wider than long, nearly trapezoidal; each elytron with two basal foveae; discal stria distinct, extending to posterior third. Mesoventrite (Fig. 2D) with median setose area wide; setose area about 1/3 as wide as mesoventral width; lateral mesoventral foveae setose; metaventrite finely punctate, convex, but area just above metaventral apex impressed; that impression nearly trapezoidal, half as long as metaventral length, occupying 1/3 metaventral width; anterior margin of that impression demarcated from other part of metaventrite. Legs with each femora broadest near middle; protibiae straight; mesotibiae (Fig. 2E) arcuate at apical 1/4, widened apically; apical part flattened posteriorly, with tufts of thick setae at apices; metatibiae (Fig. 2F) slightly arcuate at apical 1/3, broadly covered with thin, long setae; each tarsi (Fig. 2G) with tarsomeres 2 two-thirds as long as tarsomeres 3; tarsal claws each asymmetrical in size; posterior claws thin, short. Abdomen (AL/AW 0.80) wider than long; tergite IV longest, twice as long as tergite V, with pair of short longitudinal discal carina; tergite VIII and sternite VIII as in Fig. 3F, G. Aedeagus (Fig. 3A–E) 0.50 mm in length, well-sclerotized, asymmetrical; median lobe nearly tubular, strongly curved in lateral view, membranous laterally, strongly narrowed posteriorly, then broadened apically, curved laterally; parameres moderately short, asymmetrical, with four setae at apices; endophallus indistinct. Female (Fig. 1B). General appearance similar to male; antennae unmodified, successively widened towards apices, length 1.18–1.20 mm; antennomeres 6 quadrate, slightly longer than 5 and 7; mesotibiae arcuate at apical 1/4; its width throughout equal; apical part simple; metatibiae simple, covered with slightly shorter and sparser setae than that of male; metaventrite simple, lacking impression. Measurements. Male (N = 1). BL 2.42 mm; HL 0.50 mm; HW 0.53 mm; PL 0.51 mm; PW 0.44 mm; EL 0.66 mm; EW 0.95 mm; AL 0.75 mm; AW 0.94 mm. Female (N = 2). BL 2.24–2.26 mm; HL 0.46–0.48 mm; HW 0.48– 0.49 mm (HL/HW 0.95–0.97); PL 0.48–0.51 mm; PW 0.50–0.52 mm (PL/PW 0.96–0.98); EL 0.60–0.63 mm; EW 0.95–0.96 mm (EL/EW 0.625–0.66); AL 0.65–0.96 mm; AW 0.96–0.98 mm (AL/AW 0.66–0.72). <b>Distribution.</b> Myanmar (Tanintharyi Region). <b>Etymology.</b> The new specific epithet <i>spinicornis</i> is a Latin adjective, composed of <i>spina</i> (= spine) and <i>cornu</i> (= horn), referring to the spinose antenna of the male. <b>Remarks.</b> The new species can be distinguished from <i>Pseudophanias tanintharyiensi</i> s <b>sp. nov.</b> by the following characteristics: U-shaped setose sulci connecting to eyes (separate from eyes in <i>P. tanintharyiensis</i>); antennomeres 7 and 10 ventrally spinose in male; pronotum densely and coarsely punctate, with a small conical spine; mesoventrite with lateral mesoventral fovea setose (glabrous in <i>P. tanintharyiensis</i>); mesotibiae with apical part flattened posteriorly in male; metatibiae broadly covered with thin, long setae in male (each metatibiae with slight laminate plate in the male of <i>P. tanintharyiensis</i>); tergite IV with discal carinae present (lacking in <i>P. tanintharyiensis</i>).
description: Published as part of <i>Inoue, Shota &amp; Nomura, Shûhei, 2021, Two new species of Pseudophanias Raffray from Myanmar (Coleoptera Staphylinidae: Pselaphinae), pp. 591-599 in Zootaxa 4996 (3)</i> on pages 592-595, DOI: 10.11646/zootaxa.4996.3.11, http://zenodo.org/record/5074540
description: {"references": ["Nomura, S. &amp; Aung, M. M. (2021) Inventory studies on the subfamily Pselaphinae (Coleoptera, Staphylinidae) of Myanmar Part 3: A list of collected species in Tanintharyi region in November 2018. Bulletin of the National Museum of Nature and Science, Series A, 47 (1), 19 - 29."]}