Research Article |
Corresponding author: Runzhi Zhang ( zhangrz@ioz.ac.cn ) Academic editor: Miguel Alonso-Zarazaga
© 2019 Li Ren, Roman Borovec, Runzhi Zhang.
This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Citation:
Ren L, Borovec R, Zhang R (2019) On the genus Pseudocneorhinus (Coleoptera, Curculionidae, Entiminae), with descriptions of five new species from China. ZooKeys 853: 57-86. https://doi.org/10.3897/zookeys.853.33311
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Species of the genus Pseudocneorhinus occurring in or near China are reviewed, with description of five new species, Pseudocneorhinus angustus sp. nov., P. glaber sp. nov., P. hlavaci sp. nov., P. obliquehumeralis sp. nov., and P. setosicallus sp. nov. from the provinces of Beijing, Gansu, Shaanxi, Sichuan, and Zhejiang. They are illustrated and compared with similar species, and a key is provided to all presently known species of the genus. Lectotypes of the following species are designated: Callirhopalus subcallosus Voss, 1956 [current name Pseudocneorhinus subcallosus (Voss, 1956)] and P. squamosus Marshall, 1934. Pseudocneorhinus squameus Morimoto, 2015 is confirmed for the fauna of China.
New taxa, parthenogenetic, taxonomy, Trachyphloeini, weevil
The genus Pseudocneorhinus Roelofs, 1873 has been transferred between tribes several times. The genus was originally placed in Leptopsides Lacordaire, 1863 (
Together with the species newly described herein, the genus increases to 19 species known from the same area, with Pseudocneorhinus bifasciatus Roelofs, 1880 having been introduced into the USA (
The genus was recently redescribed by
Body length was measured in profile from the anterior margin of the eyes to the apex of the elytra, excluding the rostrum. All other measurements were taken in dorsal view: rostral length between anterior margins of eyes and anterior margin of epistome, rostral width as maximum width, pronotal and elytral length along midline, and their widths as maximum extension across. Dissected female genitalia were embedded in Solakryl BMX. Dried male genitalia were glued on the same mounting card as the insect. The terminology for rostrum and terminalia follows
Photos of adults were taken with a Canon EOS 7D digital camera with an MP-E 65 mm macro lens and combined using CombineZP software. All habitus photos were edited with Adobe Photoshop CS3. Line drawings were made using a camera Lucida mounted on a Rathenow microscope. Maps were prepared with Simplemappr (
Available types of species hitherto described were studied, and lectotypes were selected when necessary according to Article 74.7.3 of the Code of Zoological Nomenclature.
Acronyms for depositories of the material are as follows:
CGTS Christoph Germann collection, Rubigen, Switzerland;
GOVI Giuseppe Osella collection, Verona, Italy;
JSPC Jiří Skuhrovec collection, Praha, Czech Republic;
MKBC Michael Košťál collection, Brno, Czech Republic;
MMTI Massimo Meregalli collection, Torino, Italy;
PBSP Piotr Białooki, Sopot, Poland;
PKSC Petr Kresl collection, Spůle, Czech Republic;
RBSC Roman Borovec collection, Sloupno, Czech Republic;
SMTD Senckenberg Naturhistorische Sammlungen Dresden, Germany;
UMO University Museum, Oxford, United Kingdom;
Pseudocneorhinus Roelofs, 1873: 177 (original description).
Pseudocneorhinus:
Valley of Fubianhe river (China: Sichuan).
Holotype. CHINA – Sichuan Prov. ♂; valley of Fubianhe river; 2 Aug. 1893; Potanin leg.;
Body length: Holotype 3.41 mm, paratype 3.50 mm.
Body (Figs
Rostrum (Figs
Antennae slender with robust scape. Scape as long as funicle, weakly curved, regularly but distinctly enlarged apicad in apical half, at apex 1.4–1.6 × as wide as club. Funicle segment 1 as long as and slightly wider than segment 2, both conical; segment 1 twice as long as wide; segment 2 2.3–2.4 × as long as wide; segments 3 and 4 1.1–1.2 × as long as wide; segments 5 and 6 isodiametric; segment 7 1.1–1.2 × as wide as long; club 1.7–1.8 × as long as wide.
Pronotum (Figs
Elytra (Figs
Protibiae rounded at apex, with fringe of very short yellowish setae, mucronate. Inner side of all tibiae without teeth. Metatibial corbels squamose. Tarsi robust; segment 2 1.2–1.3 × as wide as long; segment 3 1.3–1.4 × as wide as long and 1.3–1.4 × as wide as segment 2; onychium 1.1–1.2 × as long as segment 3. Claws fused in basal half.
Penis (Fig.
Female genitalia unknown.
Unknown.
China: Sichuan (Fig.
The name is a Latin adjective meaning narrow and used to refer to the unusually slender elytra.
Pseudocneorhinus angustus is similar to P. hirsutus (Formánek, 1916) and P. squamosus Marshall, 1934 in having distinctly enlarged antennal scapes, squamose frons, only medially (between third intervals) sinuate elytral base and small body size. It is possible to distinguish it from both these species by raised setae confined to odd intervals (P. hirsutus and P. squamosus have setae on all intervals), rostrum 1.1 × longer than wide (P. hirsutus and P. squamosus have rostrum isodiametric), epifrons tapered apicad with straight sides (P. hirsutus and P. squamosus have epifrons parallel-sided, at base weakly concave), epistome with apices distinctly wider than anterior part of epifrons (P. hirsutus and P. squamosus have epistome with apices distinctly narrower than anterior part of epifrons) and elytra slender, interval 1 at declivity much wider than on the disc (P. hirsutus and P. squamosus have elytra wider with interval 1 equally wide along the whole length). Other similar species with raised setae only on odd intervals are P. alternans Marshall, 1934, P. setosicallus sp. nov. and P. subcallosus (Voss, 1956). P. angustus can be distinguished from all these three species by smaller body size, long and wide spatulate raised elytral setae and apically distinctly enlarged scapes (apex wider than club). Pseudocneorhinus angustus is most similar to P. setosicallus because of long erect setae on the elytra; they can be distinguished by the characters specified in the key below.
Anji County, Longwang Mountain (China: Zhejiang).
Holotype. CHINA – Zhejiang Prov. ♂; Anji, Longwangshan [安吉龙王山]; 450 m a.s.l.; 16 May 1996; H. Wu leg. [吴鸿];
Paratypes. CHINA – Zhejiang Prov. 2 ♂♂; same data as for holotype;
Body length: 4.63–5.19 mm, holotype 4.75 mm.
Body (Figs
Rostrum (Figs
Antennae slender, funicle 1.2 × as long as scape. Scape slender, gradually and regularly enlarged apicad, at apex as wide as club. Funicle segments 1 and 2 conical, long, funicle segment 1 slightly longer and wider than segment 2, the both 1.6–1.7 × as long as wide; segments 3 and 4 1.1 × as long as wide; segments 5 and 6 isodiametric; segment 7 1.1–1.2 × as long as wide.
Pronotum (Figs
Elytra (Figs
Protibiae rounded at apex, with fringe of short and fine yellowish setae, mucronate, inner margin with 3–4 very small black, almost indistinct teeth. Metatibiae not denticulate; metatibial corbels densely squamose. Tarsi short, segment 2 1.4–1.5 × as wide as long; segment 3 1.4–1.5× as wide as long and 1.4–1.5 × as wide as segment 2; onychium 0.7–0.8 × as long as segment 3. Claws solidly fused in basal half, almost parallel-sided in apical half.
Penis (Fig.
Female genitalia. Sternite VIII umbrella-shaped with short apodeme. Gonocoxites flat, subtriangular, with long apical styli, laterally prominent, armed with setae. Spermatheca (Fig.
Unknown.
China: Zhejiang (Fig.
The Latin name, meaning smooth and without setae, refers to body with barely visible, inconspicuous, short piliform semi-appressed setae.
Pseudocneorhinus glaber has inconspicuous elytral vestiture consisting of short, piliform setae that are semi-appressed and barely visible at apex and base in lateral view; all other species have elytra with conspicuous, moderate to very long setae of various widths and shapes, which are always more or less erect and well visible even in dorsal view. Pseudocneorhinus glaber resembles also species of the genus Rhinodontodes in having a long rostrum and medially constricted epifrons, but the epistome does not exceed the outline of the rostrum and the protibiae are straight.
Dongling Mountains, Xiaolongmen, Liu Lang Yu (China: Beijing).
Holotype. CHINA – Beijing ♀; Dongling Mountains, Xiaolongmen, Liu Lang Yu; 39°58.2'N, 115°25.8'E; 1400 m a.s.l.; 15 Jun. 2001; J. Cooter & P. Hlaváč leg.; Litter;
Paratypes. CHINA – Beijing 1 ♀; same data as for holotype;
Habitus of Pseudocneorhinus species 1, 2 Pseudocneorhinus angustus sp. nov., male, paratype, dorsal and lateral view 3, 4 P. glaber, sp. nov., male, holotype, dorsal and lateral view 5, 6 P. glaber sp. nov., female, paratype, dorsal and lateral view 7, 8 P. hlavaci sp. nov., female, holotype, dorsal and lateral view. Scale bars: 1 mm.
Body length: Holotype 5.25 mm, paratype 4.95–5.56 mm.
Body (Figs
Rostrum (Figs
Antennae slender. Scape as long as funicle, straight, weakly and regularly enlarged to apex, at apex only slightly wider than club. Funicle segment 1 as long as and only slightly wider than segment 2, both conical; segment 1 1.7–1.8 × as long as wide; segment 2 1.9–2.0 × as long as wide; segment 3 1.2 × as long as wide; segment 4 1.1 × as long as wide; segments 5 and 6 isodiametric; segment 7 1.1 × as wide as long; club 1.6–1.7 × as long as wide.
Pronotum (Figs
Elytra (Figs
Protibiae rounded at apex, with fringe of short and fine reddish setae, mucronate, on inner margin with 4–5 black, very small and indistinct teeth. Metatibiae with 1–3 black, very small and indistinct teeth in apical half; metatibial corbels squamose. Tarsi robust, segment 2 1.1–1.2 × as wide as long; segment 3 1.4–1.5 × as wide as long and 1.5–1.6 × as wide as segment 2; onychium equally long to 1.1 × as long as segment 3. Claws fused in basal half.
Male genitalia unknown.
Female genitalia. Sternite VIII umbrella-shaped with short apodeme. Gonocoxites flat, weakly sclerotised with short apical styli, armed with setae. Spermatheca (Fig.
The specimens were sifted from forest litter.
China: Beijing (Fig.
The newly described species is dedicated to the collector, our friend Peter Hlaváč (Prague, Czech Republic), well-known specialist of Staphylinidae (Pselaphinae, Scydmaeninae) and also Curculionidae.
Pseudocneorhinus hlavaci is most similar to P. sellatus Marshall, 1934 in terms of size, overall shape, regular intervals, and dorsal contour of rostrum (i.e., evenly enlarged apically, base not abruptly widened). It is easily distinguishable from it by elytral setae conspicuous and semierect, rostrum slightly longer than wide with straight sides in basal half and epifrons without longitudinal carina.
Xinglongshan b. Yuzhong, loc. Yangzhai (China: Gansu).
Holotype. CHINA – Gansu Prov. ♀; Xinglongshan b. Yuzhong, Yangzhai; 2500–3000 m a.s.l.; 22–26 Jul. 1993; Heinz leg.;
Paratype. CHINA – Shaanxi Prov. 1 ♀; Qing Ling Shan mts., road Baoji – Taibai vill., Pass 40 km S Baoji; 21–23 Jul. 1998; Z. Jindra leg.; RBSC.
Body length: holotype 5.31 mm, paratype 5.44 mm.
Body (Figs
Rostrum (Figs
Antennae slender; scape slender, weakly curved, regularly enlarged apicad, at apex same width as club. Funicle 1.2–1.3 × as long as scape; funicle segments 1 and 2 equally long, conical, segment 1 slightly wider than segment 2; segment 1 1.5–1.6 × as long as wide; segment 2 1.8–2.0 × as long as wide; segments 3 and 4 1.2–1.3 × as long as wide; segments 5 and 6 isodiametric, segment 7 1.1 × as wide as long.
Pronotum (Figs
Elytra (Figs
Protibiae moderately slender, with straight lateral margin, rounded at apex, with fringe of short and fine yellowish setae, mucronate and not denticulate. Metatibiae with four very small, almost indistinct denticles at apical half; metatibial corbels densely squamous with two, equally long mucros, curved inside. Tarsi slender; segment 2 1.1–1.2 × as wide as long; segment 3 1.3–1.4 × as wide as long and 1.5–1.6 × as wide as previous segment; onychium 1.1 × as long as segment 3. Claws solidly fused in basal half, weakly separate in apical half.
Male genitalia unknown.
Female genitalia. Sternite VIII umbrella-shaped with short apodeme. Gonocoxites flat, moderately slender with long apical styli with setae, prominent laterally. Spermatheca not examined.
Unknown.
China: Gansu, Shaanxi (Fig.
The Latin name, meaning with oblique shoulders, refers to obliquely subtruncate shoulders, angled to elytral base and sides.
Pseudocneorhinus obliquehumeralis is similar to P. alternans by the following characters: oval elytra with distinct shoulders, slender antennal scapes, and raised elytral setae on odd intervals only. It can be distinguished from P. alternans by angular rather than regularly oblique shoulders, subdistally distinctly enlarged intervals 3 and 5 each with low longitudinal prominence, and more elongate funicular segments 3 and 4.
Wanxian County, Wang’erbao Natural Reserve (China: Chongqing).
Holotype. CHINA – Chongqing ♂; Wanxian county, Wang’erbao [万县王二包]; 1200 m a.s.l.; 27 May 1994; Y.W. Zhang leg. [章有为];
Paratypes. CHINA – Chongqing 11 ♂♂; same data as for holotype;
Body length: 4.19–5.75 mm, holotype 5.38 mm.
Body (Figs
Rostrum (Figs
Antennae slender. Scapes slender, regularly enlarged in basal half, parallel-sided in apical half, at apex as wide as club. Funicle 1.2–1.3 × as long as scape; funicle segment 1 as long as and as wide as segment 2, each 1.8–1.9 × as long as wide; segments 3–6 1.1 × as long as wide; segment 7 isodiametric.
Pronotum (Figs
Elytra (Figs
Protibiae rounded at apex, with fringe of short and fine yellow-brownish setae, mucronate, not denticulate, with straight lateral margin. Metatibiae not denticulate; metatibial corbels densely squamose. Tarsi short, segment 2 1.2–1.3 × as wide as long; segment 3 1.5–1.6 × as wide as long and 1.5–1.6 × as wide as segment 2; onychium 0.8–0.9 × as long as segment 3. Claws solidly fused at basal half, almost parallel-sided at apical half.
Penis (Fig.
Female genitalia. Sternite VIII with plate umbrella-shaped and with short apodeme. Gonocoxites flat, moderately slender with long apical styli with setae, prominent laterally. Spermatheca (Fig.
Habitus of Pseudocneorhinus species 9, 10 P. obliquehumeralis sp. nov., female, paratype, dorsal and lateral view 11, 12 P. setosicallus sp. nov., male, holotype, dorsal and lateral view 13, 14 P. setosicallus sp. nov., female, paratype, dorsal and lateral view 15, 16 P. alternans, female, dorsal and lateral view. Scale bars: 1 mm.
Unknown.
China: Chongqing, Sichuan (Fig.
The Latin name, meaning with setae on prominence, refers to the conspicuous tuft of setae on prominence on the elytral declivity.
Pseudocneorhinus setosicallus is similar to P. alternans and P. subcallosus because of its large size and erect setae on odd intervals. From P. alternans, currently known only from females, this species is easily separated mainly by having ovoid elytra without shoulders, with the greatest width in the apical third, long erect elytral setae, conspicuous longitudinal subapical prominence on intervals 3 and 5 bearing very dense tufts of whitish and blackish setae and by slender pronotum. From P. subcallosus, a species with very similar body shape, P. setosicallus is distinguishable by its long, lanceolate erect elytral setae, clearly visible in dorsal as well as in lateral view, while P. subcallosus has elytral setae appressed, subspatulate, barely visible only in lateral view. The subapical tuft on interval 3 consists of at least 15 setae in P. setosicallus but at most 10 in P. subcallosus. As stated below in the key, P. setosicallus also has a longer rostrum and second funicular segment. From P. angustus, a generally smaller species with similar long, conspicuously erect elytral setae, P. setosicallus is distinguishable by shorter, in basal half enlarged rostrum, at mid-length more constricted epifrons, narrower pronotum and other characters given in the key.
Pseudocneorhinus adamsi
Roelofs, 1879: liii (original description);
Other material. CHINA; 1 ♀; S. Manchuria, Chikuanshan;
SOUTH KOREA; 25 ♂♂ ♀♀; Jinju, Witae, Sobae Mts.; 35°09.9'N, 127°49.4'E; 400 m a.s.l.; 16 May 2014; M. Košťál leg.; MKBC.
Pseudocneorhinus alternans
Marshall, 1934: 7 (original description);
The original description was based on material from “China: S. Kansu, 1 ♀, 26.vi.1930, 1 ♀, 4.x.30 (Dr. Hummel)”. There is one specimen lacking head with rostrum in Marshall’s collection (
Other material. CHINA – Beijing 1 ♀; Xiaolongmen forestry station, Nan’gou [小龙门林场南沟]; 1140 m a.s.l.; 25–28 Jun. 1999; X.D. Yu leg. [于晓东]; Larix forest, pitfall trap [落叶松林, 杯诱];
Pseudocneorhinus bifasciatus
Roelofs, 1880: 12 (original description);
This species was described from “Plusieurs individus, par M. Lewis, du Japon”. We have studied one female specimen, 5.06 mm long, deposited in Marshall’s collection (
Other material. CHINA – Fujian Prov. 1 ♀; Chong’an, Chengguan [崇安城关]; 240 m a.s.l.; 15 Jul. 1960; F.J. Pu leg. [蒲富基];
JAPAN; 5 spec.; G. Lewis leg.;
Rhinodontus hirsutus Formánek, 1916: 33 (original description).
Pseudocneorhinus hirsutus:
Other material. CHINA – Qinghai Prov. 3 ♀♀; TIBET, Kuku-Nor; 3200 m a.s.l.; 1898; Hauser leg.; GOVI.
Pseudocneorhinus longisetosus
Morimoto, 2015: 339 (original description);
Other material. RUSSIA; 8 ♀♀; Siberia or. mer., Primorje, Sichote – Alin Mts, Sokolči; 1–15 Jul.1990; S. Kadlec & J. Voříšek leg.; JSPC, RBSC; 19 ♀♀; Siberia or. Mer., Primorje, Ussuri res.; 20 Jul. 1990; S. Kadlec leg.; RBSC; 1 ♀; Siberia or. mer., Primorje, Komarovka flum, Kamenushka env., 300 m a.s.l.; May 1992; Voříšek leg.; RBSC; 1 ♀; Siberia or. mer., Kamenushka at Ussuriysk; 2 Aug.1992; J. Sawoniewicz leg.; RBSC; 1 ♀; Siberia or., Chechcir chrebet; 7 Jul.1977; Gottwald leg.; RBSC; 4 ♀♀; USSR, Chabarovsk; 7 Jul. 1981; Mejzlík leg.; RBSC; 1 ♀; Khabarovsk; 4 Jul.1977; Rataj leg.; MMTI.
Pseudocneorhinus minimus
Roelofs, 1879: liii (original description);
This species was described from an unspecified number of specimens from “Japon”. We have studied one probably female specimen, well preserved and 2.94 mm long, deposited in Marshall’s collection (
Other material. CHINA – Fujian Prov. 1 ♀; Fenanina env., NW slope of Yunwu Shan; 1200 m a.s.l.; 3 Jun. 2000; Z. Jindra leg.; PKSC.
JAPAN; 3 ♀♀; G. Lewis leg.;
Pseudocneorhinus obesus
Roelofs, 1873: 177 (original description);
This species was described from “Quelques individus. Nagasaki”. There is one well preserved, 5.25 mm long, probably female specimen in Marshall’s collection (
Other material. JAPAN; 2 ♀♀; G. Lewis leg.;
Pseudocneorhinus sellatus
Marshall, 1934: 8 (original description);
Other material. CHINA – Beijing; 2 ♀♀; Mentougou, Xiaolongmen [门头沟小龙门]; 39°57.6'N, 115°25.8'E; 1164–1210 m a.s.l.; 5 Jul. 2011; G.X. Qiao & J. Chen leg. [乔格侠, 陈军];
Pseudocneorhinus setosus
Roelofs, 1879: liii (original description);
This species was described from an unspecified number of specimens from “Japon”. We have studied one probably female specimen, well preserved and 4.88 mm long, deposited in Marshall’s collection (
Other material. CHINA – Fujian Prov. 1 ♀; Kuatun; Jun. 1946; Tschung Sen leg.; RBSC.
JAPAN; 1 ♀; Nagasaki;
Pseudocneorhinus squameus
Morimoto, 2015: 336 (original description);
Pseudocneorhinus squamous
(lapsus):
Other material. CHINA – Beijing; 1 ♀; Mentougou, Xiaolongmen [门头沟小龙门]; 39°57.6'N, 115°25.8'E; 1164–1210 m a.s.l.; 5 Jul. 2011; G.X. Qiao & J. Chen leg. [乔格侠, 陈军];
Pseudocneorhinus squamosus
Marshall, 1934: 6 (original description);
Cillirhopalus [sic] subcallosus Voss, 1956: 23 (original description).
Pseudocneorhinus subcallosus:
Spermatheca of Pseudocneorhinus species 37 Pseudocneorhinus glaber sp. nov. 38 P. hlavaci sp. nov. 39 P. setosicallus sp. nov. 40 P. adamsi 41 P. alternans 42 P. bifasciatus 43 P. hirsutus 44 P. longisetosus 45 P. minimus 46 P. obesus 47 P. sellatus 48 P. setosus 49 P. squameus 50 P. squamosus 51 P. subcallosus. Scale bar: 0.25 mm.
The following key separates the new species from all previously described ones. An asterisk (*) after the name means that species has not been studied by us and we know it only from the description.
1 | Metatibiae clearly denticulate on almost whole inner margin. Elytra with distinct longitudinal prominence distally at end of interval 2, visible mainly in lateral view | 2 |
– | Metatibiae not denticulate on inner margin, only in P. adamsi and P. longisetosus with 3–5 minute denticles in apical half on inner face. Interval 2 of elytra without longitudinal prominence | 4 |
2 | Elytra in females as long as wide, in males slightly wider than long. Some intervals with two irregular rows of suberect setae. Size: 4.5–6.4 mm. Japan | P. meshimanus Morimoto* |
– | Elytra in both sexes slightly longer than wide. Each interval with regular row of suberect setae | 3 |
3 | Space behind epistomal carina with round, iridescent scales. Elytra widest at anterior third. Size: 3.3–4.9 mm. China, Japan, Korea, Russia | P. bifasciatus Roelofs |
– | Space behind epistomal carina without round, iridescent scales. Elytra widest at middle. Size: 3.6–4.2 mm. Korea | P. soheuksandoensis Han & Yoon* |
4 | Dorsal part of body with inconspicuous, short, piliform, semiappressed greyish setae, hardly visible in lateral view, mainly at apical part of elytra (Figs |
P. glaber sp. nov. |
– | Dorsal part of body with conspicuous short to long, piliform to spatulate, semierect to erect setae, clearly visible also in dorsal view (Figs |
5 |
5 | Scape distinctly widened distally, at apex distinctly wider than club and as wide as diameter of eye in lateral view | 6 |
– | Scape moderately gradually widened distally, at apex as wide as or only slightly wider than club and conspicuously more slender than diameter of eye in lateral view | 7 |
6 | Raised elytral setae wide, subtriangular, truncate at apex. Rostrum at base abruptly enlarged. Funicle segment 3 1.1 × as long as wide; segments 4 and 5 isodiametric. Onychium equally long as tarsal segment 3. Size: 3.0–3.5 mm. China | P. squamosus Marshall |
– | Raised elytral setae slender, subspatulate, rounded at apex. Rostrum at base gradually enlarged. Funicle segments 3–5 wider than long. Onychium 1.2–1.3 × as long as tarsal segment 3. Size: 3.5–3.8 mm. China | P. hirsutus (Formánek) |
7 | Raised elytral setae only on odd intervals or those on odd intervals more conspicuous, longer and distinctly denser (Figs |
8 |
– | Raised elytral setae present equally on odd and even intervals (Figs |
12 |
8 | Elytra ovoid, widest in posterior third, shoulders not defined (Figs |
9 |
– | Elytra oval, sides sub-parallel, widest at midlength, with distinct shoulders (Figs |
11 |
9 | Elytral setae inconspicuous, appressed, hardly visible mainly in lateral view. Rostrum 1.1 × as wide as long. Funicle segment 2 more robust, 1.4–1.6 × as long as wide. Size: 5.1–5.6 mm. China | P. subcallosus (Voss) |
– | Elytral setae conspicuous, perpendicularly erect, clearly visible in dorsal and lateral view. Rostrum 1.1 × as long as wide. Funicle segment 2 thinner, at least 1.8 × as long as wide | 10 |
10 | Smaller, 3.4–3.5 mm. Erect elytral setae half as wide as interval, spatulate (Fig. |
P. angustus sp. nov. |
– | Larger, 4.2–5.8 mm. Erect elytral setae one fourth as wide as interval, lanceolate (Figs |
P. setosicallus sp. nov. |
11 | Shoulders regularly rounded (Fig. |
P. alternans Marshall |
– | Shoulders obliquely truncate (Fig. |
P. obliquehumeralis sp. nov. |
12 | Funicle segments 4 and 5 longer than wide | 13 |
– | Funicle segments 4 and 5 wider than long | 15 |
13 | Rostrum almost parallel-sided (Fig. |
P. obesus Marshall |
– | Rostrum with apex distinctly and regularly enlarged (Figs |
14 |
14 | Raised elytral setae inconspicuous, semiappressed, shorter than half width of interval (Fig. |
P. sellatus Marshall |
– | Raised elytral setae conspicuous, semierect, shorter than interval wide (Fig. |
P. hlavaci sp. nov. |
15 | Elytra widest at middle (Fig. |
P. minimus Roelofs |
– | Elytra widest behind middle (Fig. |
16 |
16 | Setae on elytra squamiform, obtuse or truncate at tip, absent or much less numerous on intervals 4 and 6. Spermatheca with cornu long and slender, laterally extending beyond level of nodulus (Fig. |
P. squameus Morimoto |
– | Setae on elytra much narrower, acuminate, present on all intervals. Spermatheca with cornu more robust, not extending beyond level of nodulus (Figs |
17 |
17 | Metatibiae not denticulate on inner face. Epistome accompanied by narrow glabrous area. Size: 3.3–5.8 mm. China, Japan, Korea, Russia | P. setosus Roelofs |
– | Metatibiae with 3–5 minute denticles in apical half on inner face. Epistome accompanied by wide glabrous area | 18 |
18 | Epistome shorter, almost rectangular posteriorly, posterior corners shortly and narrowly rounded. Spermatheca with ramus slightly larger than nodulus, placed next to it (Fig. |
P. adamsi Roelofs |
– | Epistome longer, sharply triangular posteriorly. Spermatheca with ramus distinctly smaller than nodulus, placed at its base (Fig. |
P. longisetosus Morimoto |
There are 16 species of Pseudocneorhinus recorded from China, accounting for 84% of the species presently known in the Palaearctic Region. All species inhabit elevations between 240 and 3200 m; most of them were found around 1000 m. Ten species are Chinese endemics, except P. alternans and P. sellatus with, apparently, highly restricted distributions. Only five species are widely distributed between China and eastwards into the Korean Peninsula, the Russian Far East and Japan. We recognize two main distributional ranges in China. One is a longitudinally wide corridor from Heilongjiang to Fujian provinces in the Northeast and the eastern coastal areas. The other is in the Southwest, mainly southern Kansu, southern Shaanxi, Chongqing, and Sichuan provinces. All new species described herein have been discovered in mountainous localities (Fig.
We want to thank here to all colleagues for loan of material used for this study: Maxwell Barclay (