identifier	taxonID	type	CVterm	format	language	title	description	additionalInformationURL	UsageTerms	rights	Owner	contributor	creator	bibliographicCitation
833FF45EFFD2663AFF3CFC4EFEB93987.text	833FF45EFFD2663AFF3CFC4EFEB93987.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Chenzhilinus Yin & Zhou 2026	<div><p>Chenzhilinus Yin &amp; Zhou, stat. nov.</p><p>Euconnus (Chenzhilinus) Yin &amp; Zhou, 2024: 583 . Type species: Euconnus (Chenzhilinus) huapingensis Yin &amp; Zhou; by original designation.</p><p>Revised diagnosis. Habitus Euconnus -like. Body with distinct constrictions between head and pronotum, and between pronotum and elytra; thick bristles present on vertex, tempora, genae, anterolateral, lateral, and lateroventral areas of pronotum, and mesanepisternum of thorax. Head in lateral view subrectangular, with suboval frontovertexal region; eyes anteriorly positioned, closer to antennal insertions than to occipital constriction; antennal insertions medially separated by distance subequal to scape width; fronto-clypeal groove absent; posterior margin of vertex not bulging posterodorsally, evenly convex medially; submental region laterally with pairs of posteriorly converging hypostomal carinae (= “hypostomal suture”) and hypostomal ridges, intercarinal area subtriangular; hypostomal ridges extending posteriorly, ending before level of posterior tentorial pits, each dividing gena into setose lateral portion and asetose inner portion; occipital constriction slightly broader than half head-width; neck region broadening posteriorly; mandibles slender, each with small subapical tooth; maxillary palpomere 3 not enlarged (i. e., not conspicuously broader than scape); labrum with anterior row of peg-like sensilla; antennal club tetramerous or pentamerous, with subquadrate antennomeres 7 (or 8) to 10 and subconical antennomere 11. Pronotum subrounded, broadest near middle; typically with two pairs of antebasal pits, variably absent or weakly developed; sublateralbasal carinae short if present. Prosternum with precoxal region much shorter than procoxal rests; procoxal cavities medially separated by thin longitudinal carina; notosternal sutures complete; hypomeral ridges sharply delineating inner and outer regions of each hypomeron. Elytra elongate-oval; each elytron with two deep, asetose basal pits; scutellar shield partially exposed between elytral bases. Mesoventral intercoxal process broad, keel-like, greatly raised, extending from middle of mesoventral procoxal rests to beyond level of posterior margins of mesocoxae, posteriorly fused with metaventrite. Metaventral intercoxal process narrowly separating metacoxae, with medial round notch. Aedeagus stout; median lobe and internal sac (endophallic) armature symmetric; parameres markedly short, sometimes scarcely visible. Male secondary sexual characters present on antennal clubs and sternites 1 (III), 2 (IV).</p><p>Comparative notes. Although exhibiting an Euconnus -like habitus, the genus can be unambiguously distinguished and tentatively placed within an informal working group of Stenichnini whose members are characterized by the possession of a pair of hypostomal sutures (= “hypostomal carinae” in this paper) demarcating a subrectangular submental region. Specifically, Chenzhilinus differs from all known subgenera of Euconnus by the presence of these posteriorly converging hypostomal carinae and ridges, a character state universally absent in the Euconnus complex. Furthermore, while the tetramerous or pentamerous antennal clubs might superficially resemble some Euconnus species, the combination of the submental structure, the presence of distinct tubercles on male sternites III and IV, and the markedly shortened, symmetric parameres of the aedeagus serves to isolate this lineage as a distinct genus. Following the most recent key to world stenichnine genera published in Jałoszyński (2025a), Chenzhilinus keys to couplet 49; the key requires the following minor modification to accommodate the genus:</p><p>49 Antennae with sharply delimited dimerous clubs..................... Nogunius Jałoszyński (China: Taiwan; Japan)</p><p>- Antennae gradually broadened apically, or with distinct clubs composed of no less than three apical antennomeres....49’</p><p>49’ Antennae with tetramerous or pentamerous clubs (Yin &amp; Zhou 2024: figs 1, 2D; Figs 1A, B, 2A); antennomeres 8–10 transversely subquadrate............................... Chenzhilinus Yin &amp; Zhou (China: Guangxi, Chongqing)</p><p>- Antennae gradually broadened or with trimerous clubs; antennomeres 8–10 not as distinctly subquadrate as above.... 50</p><p>Chenzhilinus currently comprises two Chinese species distributed in Guangxi and Chongqing. These taxa together form an apparent monophyletic lineage united by a shared morphology of the antennal club, the presence of paired tubercles on the lateral margins of male sternites 1 (III) and 2 (IV), and a rather conservative configuration of the aedeagus.</p></div>	https://treatment.plazi.org/id/833FF45EFFD2663AFF3CFC4EFEB93987	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		MagnoliaPress via Plazi	Yin, Zi-Wei;Zhou, De-Yao	Yin, Zi-Wei, Zhou, De-Yao (2026): Revised status, additional records, and a second species of the genus Chenzhilinus Yin & Zhou, 2024, stat. nov. (Coleoptera: Staphylinidae: Scydmaeninae). Zootaxa 5757 (3): 271-278, DOI: 10.11646/zootaxa.5757.3.4, URL: https://doi.org/10.11646/zootaxa.5757.3.4
833FF45EFFD1663BFF3CFCC0FCBF3D76.text	833FF45EFFD1663BFF3CFCC0FCBF3D76.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Chenzhilinus huapingensis (Yin & Zhou 2024) Yin & Zhou 2026	<div><p>Chenzhilinus huapingensis (Yin &amp; Zhou), comb. nov.</p><p>(Figs 1, 3)</p><p>Euconnus (Chenzhilinus) huapingensis Yin &amp; Zhou, 2024: 587 . Type locality: “ China: Guangxi, Guilin City, Lingui District, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=109.927925&amp;materialsCitation.latitude=25.562485" title="Search Plazi for locations around (long 109.927925/lat 25.562485)">Anjiangping</a>, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=109.927925&amp;materialsCitation.latitude=25.562485" title="Search Plazi for locations around (long 109.927925/lat 25.562485)">Xiaoguangfuding</a>, 25°33'44.95"N, 109°55'40.55"E, 1792 m.”</p><p>Material examined (11 exx.). Holotype: ♂, ‘ China: Guangxi, Guilin City, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=109.82278&amp;materialsCitation.latitude=31.515278" title="Search Plazi for locations around (long 109.82278/lat 31.515278)">Lingui District</a>, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=109.82278&amp;materialsCitation.latitude=31.515278" title="Search Plazi for locations around (long 109.82278/lat 31.515278)">Anjiangping</a>, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=109.82278&amp;materialsCitation.latitude=31.515278" title="Search Plazi for locations around (long 109.82278/lat 31.515278)">Xiaoguangfuding</a>, 25°33'44.95"N, 109°55'40.55"E, 1792 m, 27.v.2023, Peng, Zhou &amp; Duan leg., ḞƱ临ŨṘū 坪小Ḟēũḃ中= ’; paratype: 1 ♂, same collecting data as for holotype; 4 ♂♂, 2 ♀♀, ‘ China: Chongqing, Wuxi County, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=109.82278&amp;materialsCitation.latitude=31.515278" title="Search Plazi for locations around (long 109.82278/lat 31.515278)">Yintiaoling N. R.</a>, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=109.82278&amp;materialsCitation.latitude=31.515278" title="Search Plazi for locations around (long 109.82278/lat 31.515278)">Hongqi Stn.</a>, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=109.82278&amp;materialsCitation.latitude=31.515278" title="Search Plazi for locations around (long 109.82278/lat 31.515278)">Shuangtong Reservoir</a>, 31°31'28"N, 109°49'32"E, 1261 m, 09.v.2025, Gao, He, Huang &amp; Wan leg., Dzĩ巫Ī县ẹêẆ保ae区údz双OiAEÂ ’; 2 ♂♂, ‘ China: Chongqing, Wuxi County, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=109.82278&amp;materialsCitation.latitude=31.515278" title="Search Plazi for locations around (long 109.82278/lat 31.515278)">Yintiaoling N. R.</a>, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=109.82278&amp;materialsCitation.latitude=31.515278" title="Search Plazi for locations around (long 109.82278/lat 31.515278)">Luomadian</a>, 31°33'0"N, 109°50'39"E, 1635 m, 12.v.25, Gao, He, Huang &amp; Wan leg., Dzĩ巫 Ī县ẹêẆ保ae区ḆḶâ ’; 1 ♀, ‘ China: Chongqing, Wuxi County, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=109.82278&amp;materialsCitation.latitude=31.515278" title="Search Plazi for locations around (long 109.82278/lat 31.515278)">Yintiaoling N. R.</a>, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=109.82278&amp;materialsCitation.latitude=31.515278" title="Search Plazi for locations around (long 109.82278/lat 31.515278)">Hongqi</a>, <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=109.82278&amp;materialsCitation.latitude=31.515278" title="Search Plazi for locations around (long 109.82278/lat 31.515278)">Qinglongtan</a>, 31°30'55"N, 109°49'22"E, 1243 m, 09.v.25, Gao, He, Huang &amp; Wan leg., Dzĩ巫Ī县ẹêẆ保ae区údzûẍ Ã ’.</p><p>Revised diagnosis. Male. Body length approximately 1.9–2.2 mm. Head and pronotum with distinct, coarse punctation, that of elytra much finer. Antenna approximately 1.0– 1.1 mm long, with tetramerous club composed of swollen apical four antennomeres; antennomeres 3–5 of similar width; 6, 7 slightly larger and broader than 3–5; 8–10 each subquadrate, gradually shorter; 11 roundly conical, truncate at base. Elytra suboval; ratio of length/ width 1.32–1.38. Sternites 1 (III) and 2 (IV) each with pair of elongate-oval projections on posterolateral margins. Aedeagus generally stout, 0.20–0.22 mm long; dorsal wall with two admesal setae at apex; endophallic armature composed of subtrapezoidal, transverse sclerite in apical part, and suboval sclerite in middle to posterior part; parameres short, barely noticeable, each with one fine seta at apex. Female. Habitus in general similar to male; antennal clubs distinctly shorter; antennomere 8 moderately, antennomeres 9 and 10 greatly transverse. Spermatheca 0.17 mm long; with broad ductus spermathecae.</p><p>Emended and supplementary description. Male. Aedeagus stout, with short, symmetric parameres (Fig. 1C; pm) each bearing one fine apical seta. Female. Habitus similar to male in general. Antennal club (Fig. 1B) relatively shorter, less distinct than male (Fig. 1A); antennomeres 7–10 each more strongly transverse. Spermatheca (Fig. 1D, E) small, thick-walled, in axial view symmetrically suboval, in lateral view elongate and slightly irregular; ductus spermathecae (Fig. 1D; ds) broad.</p><p>Measurements for the Chongqing population (in millimeters, female in parentheses): body length 1.94–2.13 (1.99–2.10); length/width of head 0.42–0.48/0.39–0.43 (0.44–0.52/0.39–0.43), pronotum 0.48–0.52/0.47–0.49 (0.49–0.52/0.49), elytra 1.04–1.13/0.76–0.85 (1.06/0.77–0.85); length of antenna 1.01–1.07 (0.90–1.07), antennal club 0.55–0.60 (0.46–0.60); length of aedeagus 0.20, spermatheca including ductus spermathecae 0.17.</p><p>Distribution. China: Guangxi, Chongqing (Fig. 3). New provincial record for Chongqing.</p><p>Remarks. The aedeagus of the type species was originally described as “devoid of parameres” or “lacking parameres.” This putative diagnostic character state was based on an examination of the two available male type specimens, in which “no traces of parameres were found.” However, re-examination of the holotype, augmented by newly collected material for the present study, revealed the presence of parameres. These structures were previously overlooked owing to their extreme inconspicuousness. The updated diagnosis for Chenzhilinus is corrected to reflect this finding, describing the parameres as “markedly short.” The revised description is illustrated by including a drawing of the aedeagus that clearly labels the short paramere (Fig. 1C; pm), and is supplemented with morphological details of the spermatheca based on females from Chongqing.</p></div>	https://treatment.plazi.org/id/833FF45EFFD1663BFF3CFCC0FCBF3D76	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		MagnoliaPress via Plazi	Yin, Zi-Wei;Zhou, De-Yao	Yin, Zi-Wei, Zhou, De-Yao (2026): Revised status, additional records, and a second species of the genus Chenzhilinus Yin & Zhou, 2024, stat. nov. (Coleoptera: Staphylinidae: Scydmaeninae). Zootaxa 5757 (3): 271-278, DOI: 10.11646/zootaxa.5757.3.4, URL: https://doi.org/10.11646/zootaxa.5757.3.4
833FF45EFFD0663DFF3CF96EFABF3D65.text	833FF45EFFD0663DFF3CF96EFABF3D65.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Chenzhilinus yintiaolingensis Yin & Zhou 2026	<div><p>Chenzhilinus yintiaolingensis Yin &amp; Zhou, sp. nov.</p><p>(Figs 2, 3)</p><p>Type material ( 1 ex.). HOLOTYPE: CHINA: ♂: ‘ China: Chongqing, Wuxi County, Yintiaoling N. R., <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=109.84417&amp;materialsCitation.latitude=31.55" title="Search Plazi for locations around (long 109.84417/lat 31.55)">Luomadian</a>, 31°33'0"N, 109°50'39"E, 1635 m, 12.v.25, Gao, He, Huang &amp; Wan leg., Dzĩ 巫Ī县ẹêẆ保ae区ḆḶâ ’ (SNUC).</p><p>Diagnosis. Male. Body length approximately 2.1 mm. Head and pronotum with distinct, coarse punctation, that of elytra much finer. Antenna approximately 1.1 mm long, with pentamerous club composed of swollen apical five antennomeres; antennomeres 3–7 gradually larger and broader; 8–10 each subquadrate, gradually shorter; 11 roundly conical, truncate at base. Elytra suboval; ratio of length/width 1.30. Sternites 1 (III) and 2 (IV) each with pair of elongate-oval projections on posterolateral margins. Aedeagus generally stout, 0.19 mm long; dorsal wall with two admesal setae at apex; endophallic armature composed of subtrapezoidal, transverse sclerite in apical part, and shield-shaped sclerite in posterior part; parameres short, weakly sclerotized, each with single seta at apex. Female. Unknown.</p><p>Description. Male. Body (Fig. 2A) moderately slender and dorso-ventrally weakly convex, length (combined length of head, pronotum and elytra) 2.11 mm; coloration uniformly red brown, mouthparts and tarsi paler. Head elongate suboval, broadest across eyes, length from anterior margin of clypeus to posterior margin of vertex 0.47 mm, width across eyes 0.42 mm; supraantennal tubercles barely raised; eyes moderately convex laterally; tempora in dorsal view approximately 1.5× as long as eyes. Vertex and frons conspicuously punctate throughout; setae long, dense and suberect; temporal margins with much longer and denser bristles. Submental area clearly with two pairs of hypostomal carinae and ridges (Fig. 2B; hc, hr). Antenna 1.11 mm long; club 0.64 mm long, formed by apical five distinctly swollen antennomeres (Fig. 2C; a 7–11), occupying approximately 3/5 length of antenna; antennomere 1 broad and subquadrate; 2 slightly elongate, weakly broadening from base to apex; 3–6 gradually larger and broader; 7 subconical; 8–10 subquadrate, gradually shorter; 11 roundly conical, approximately 1.4× as long as 10, truncate at base.</p><p>Pronotum in dorsal view roundly bell-shaped, broadest approximately at middle, length along midline 0.55 mm, maximum width 0.51 mm; anterior margin weakly curved, sides moderately rounded, convergent from broadest point anteriorly and weakly narrowing toward base, posterior corners small and obtuse, posterior margin much broader than anterior margin, slightly convex at middle; pronotal base with pair of basolateral pits (obscured by setae) and short carinae posterior to pits. Punctures of pronotal disc conspicuous and becoming slightly finer on posterior margin; setae similar to those of head, suberect, disc with sparse and margins with dense bristles.</p><p>Elytra together elongate suboval and flattened dorsally, broadest at approximately basal 2/5, length along suture 1.09 mm, maximum width 0.84 mm, ratio of length/width 1.30; base consisting of two pairs of large round pits; humeral calli greatly projecting; elytral apices separately rounded. Punctures on elytral disc finer than those of head and pronotum; setae moderately long and dense, suberect.</p><p>Legs moderately long and slender, unmodified; preapical portion of mesotibia (Fig. 2D) with tufts of golden setae; metacoxa lobed at coxal-trochanteral articulation.</p><p>Sternites 1 (III) and 2 (IV) each with pair of elongate, disc-like tubercles (Fig. 2E; lst) on lateral margins.</p><p>Aedeagus (Fig. 2F–I) rather stout, dorso-ventrally symmetric, length 0.19 mm, walls membranous; median lobe in dorsal view with apical plate broadly and abruptly narrowed at middle and protruding for short distance, apical margin emarginate at middle and with two admesal setae, preapical region in lateral view slightly projecting, hook-like; ventral plate indistinctly demarcated from dorsal plate by arched suture; parameres short and weakly membranous, each with one seta at apex; endophallus composed of one irregular, transverse sclerite and one shield-shaped sclerite in middle and posterior part.</p><p>Female. Unknown.</p><p>Sexual dimorphism. The female presumably differs from the male (as in the type species) by having less strongly modified antennal clubs and lacking lateral projections on the abdominal sternites. This hypothesis can be verified only by examination of female specimens in the future.</p><p>Comparative notes. The two species included in this genus resemble each other in both external morphology and shape of the aedeagus. They can be best separated by the different form of the male antennal clubs (see the key below).</p><p>Distribution. Southwestern China: Chongqing (Fig. 3). This species has a sympatric distribution with C. huapingensis at the Yintiaoling Nature Reserve in Chongqing.</p><p>Etymology. The specific epithet is derived from the type locality, Yintiaoling National Nature Reserve.</p></div>	https://treatment.plazi.org/id/833FF45EFFD0663DFF3CF96EFABF3D65	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		MagnoliaPress via Plazi	Yin, Zi-Wei;Zhou, De-Yao	Yin, Zi-Wei, Zhou, De-Yao (2026): Revised status, additional records, and a second species of the genus Chenzhilinus Yin & Zhou, 2024, stat. nov. (Coleoptera: Staphylinidae: Scydmaeninae). Zootaxa 5757 (3): 271-278, DOI: 10.11646/zootaxa.5757.3.4, URL: https://doi.org/10.11646/zootaxa.5757.3.4
833FF45EFFD5663EFF3CFACBFA683EB2.text	833FF45EFFD5663EFF3CFACBFA683EB2.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Chenzhilinus Yin & Zhou 2026	<div><p>Key to Chenzhilinus males</p><p>1 Antennal club tetramerous (composed of four antennomeres), antennomeres 3–5 similar in width, 6–7 similar in width and slightly wider than 3–5 (Yin &amp; Zhou 2024: fig. 1A; Fig. 1A) (SW China: Guangxi, Chongqing)............................................................................................. C. huapingensis (Yin &amp; Zhou)</p><p>- Antennal club pentamerous (composed of five antennomeres), antennomeres 3–7 gradually increasing in size and width (Fig. 2A, C) (SW China: Chongqing).................................. C. yintiaolingensis Yin &amp; Zhou, sp. nov.</p></div>	https://treatment.plazi.org/id/833FF45EFFD5663EFF3CFACBFA683EB2	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		MagnoliaPress via Plazi	Yin, Zi-Wei;Zhou, De-Yao	Yin, Zi-Wei, Zhou, De-Yao (2026): Revised status, additional records, and a second species of the genus Chenzhilinus Yin & Zhou, 2024, stat. nov. (Coleoptera: Staphylinidae: Scydmaeninae). Zootaxa 5757 (3): 271-278, DOI: 10.11646/zootaxa.5757.3.4, URL: https://doi.org/10.11646/zootaxa.5757.3.4
