Cryptopleurum minutum ( Fabricius, 1775 )

Jia, Fenglong & Zhang, Ruijuan, 2017, A review of the genus Cryptopleurum from China (Coleoptera: Hydrophilidae), Acta Entomologica Musei Nationalis Pragae (Acta. Ent. Mus. Natl. Pragae) 57 (2), pp. 577-592 : 578-581

publication ID

https://doi.org/ 10.1515/aemnp-2017-0090

publication LSID

lsid:zoobank.org:pub:36736AC4-7596-4659-9FEF-3E616CE43BBA

persistent identifier

https://treatment.plazi.org/id/0E6187DC-8173-2912-FED4-AD13FD22FD7B

treatment provided by

Marcus

scientific name

Cryptopleurum minutum ( Fabricius, 1775 )
status

 

Cryptopleurum minutum ( Fabricius, 1775)

( Figs 1‒8 View Figs 1–8 )

Sphaeridium minutum Fabricius, 1775: 68 . Cryptopleurum minutum: HANSEN (1999: 309) : catalogue, complete synonymy.

Type locality. Anglia [= Great Britain: England].

Material examined. CHINA: QINGHAI: 64 spec. ( SYSU):China, Qinghai, Huzhu County, Beishan Shiepan , 37º02′13ʺN, 102º15′26.27ʺE, 2912 m, 3.iv.2013, F.L. Jia, R.B.Angus & Y.Zhang lgt. (with English and Chinese labels). NEI MON- GOL: 1 male, 1 unsexed spec ( SYSU): Yitulihe, 50º38′24ʺN, 121º35′24ʺE, 13‒15.viii.2008, F.L. Jia lgt. (transcribed from Chinese). GANSU: 7 spec. ( NMPC): China: Gansu province, Lazikou valley, 2120‒2510 m, 34°09.9‒10.1′N 103°48.2‒51.9′E, 28.vi.2005, J. Hájek, D.Král & J.Růžička lgt GoogleMaps .; 5 spec. ( NMPC):China: Gansu province, Dagcanglhamo (=Langmusi), 3464‒3644 m, 23‒25.vi.2005, 34°04.6‒05.1′N 102°37.7‒38.1′ E, J. Hájek, D. Král & J. Růžička lgt. Published records. CHINA: NEI MONGOL: without specified locality ( FIKÁČEK et al. 2015a) .

Redescription. Length 1.6–2.3 mm. Dark brown or black with light subhumeral spots, seldom reddish with lateral and basal darkening, or uniformly reddish. Pronotum without microsculpture except on extreme lateral portion ( Fig. 4 View Figs 1–8 ), punctures on head, pronotum and elytra coarse and distinct. Scutellum with punctures. Fifth abdominal ventrite in female without tubercle. Elytra with interval eight low and narrower than neighbouring intervals, but series of punctures distinctly separated ( Fig. 5 View Figs 1–8 ); intervals almost flat basally, becoming convex both apically and laterally ( Figs 1, 3, 5 View Figs 1–8 ) but less distinctly than in C. coomani and C. sulcatum . Metaventrite with coarser and dense punctures. Aedeagus ( Figs 7, 8 View Figs 1–8 ) with parameres ca. 1.2× as long as phallobase; parameres gradually narrowed from base to basal third, then almost parallel to subapex, apex narrowly sharpened; median lobe broad, basal two thirds almost parallel, and then gradually narrowed apicad.

Differential diagnosis. This species is similar to C. subtile , but can be distinguished from the latter by the darker color, and the pronotum, elytra and metaventrite with coarser and more dense punctures. The head and metaventrite are without fine longitudinal microsculpture, and the pronotum only has very fine scale-like microsculpture extremely laterally.

Biology. Living in rotting organic material, such as rotting grass, excrements of mammals, also among various plant debris; in Europe also recorded from bird nests ( RYNDEVICH & LUNDYSHEV 2005).

Distribution. Widespread in Palaearctic Region except north Africa, introduced to the Nearctic ( SMETANA 1978, HANSEN 1999). In China only known from nothern parts (Gansu, Nei Mongol, Qinghai). New record for Gansu and Qinghai.

NMPC

National Museum Prague

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Hydrophilidae

Genus

Cryptopleurum

Loc

Cryptopleurum minutum ( Fabricius, 1775 )

Jia, Fenglong & Zhang, Ruijuan 2017
2017
Loc

Sphaeridium minutum

HANSEN M. 1999: )
FABRICIUS J. C. 1775: 68
1775