Leiodes irregularis Portevin, 1927

Hoshina, Hideto, 2012, Review of the tribes Sogdini and Leiodini from Japan and North Chishima Islands. Part II. Genera Hydnobius and Leiodes (Coleoptera: Leiodidae), Acta Entomologica Musei Nationalis Pragae (suppl. 1) 52, pp. 1-168 : 137-140

publication ID

https://doi.org/ 10.5281/zenodo.4272467

DOI

https://doi.org/10.5281/zenodo.10845703

persistent identifier

https://treatment.plazi.org/id/03E98224-328C-07E6-769E-4081FB9CA213

treatment provided by

Felipe

scientific name

Leiodes irregularis Portevin, 1927
status

 

32. Leiodes irregularis Portevin, 1927 View in CoL

Japanese name: Etorofu-ô-tamakinokomushi ( Figs. 6 View Fig , 93–95 View Fig View Fig View Fig , 109 View Figs )

Liodes suturalis Portevin, 1927: 75 View in CoL .

Liodes irregularis Portevin, 1927: 76 View in CoL ; HATCH (1929): 35; DAFFNER (1983): 87 (synonymized with Leiodes portevini View in CoL ); Perreau (2004): 196 (catalogue).

Liodes dichroa Portevin, 1927: 76 View in CoL ; HATCH (1929): 36; DAFFNER (1983): 87 (synonymized with Leiodes portevini View in CoL ).

Liodes Grouvellei Portevin, 1927: 76 View in CoL ; HATCH (1929): 36; DAFFNER (1983): 87 (synonymized with Leiodes portevini View in CoL ).

Liodes intermedia Portevin, 1927: 77 View in CoL ; HATCH (1929): 36; DAFFNER (1983): 87 (synonymized with Leiodes portevini View in CoL ).

Leiodes portevini Hatch, 1929: 35 View in CoL (substitute name for Liodes suturalis Portevin, 1927 View in CoL which became a homonym of Leiodes suturalis Stephens, 1832 View in CoL ); DAFFNER (1983): 86 (redescription).

Liodes elongate Portevin, 1943: 168 ; DAFFNER (1983): 87 (synonymized with Leiodes portevini View in CoL ).

Type locality. Japan, Hokkaido, Etorofu Is.

Type material. Not examined.

Additional material examined. JAPAN: HOKKAIDO: 1 ♀, Mt. Meakandake , 12.vii.1995, H. Hoshina leg. ; 1 ♀, Mts. Daisetsu, Mt. Kurodake , 2.viii.1987, N. Yasuda leg. ; 6 spec., Sapporo City, forests near Historical Museum of Hokkaido, 7.viii.2002, S. Hori leg.( FIT) ; 11 spec., 29.vi.2000, 6 spec., 19.vii.2000, 10 spec., same data as the former except for the date, 29.viii.2001 ; 1 spec., Ebetsu City, Nopporo Forest Park , x-xi.2005, T. Lackner leg. ( JCHE) ; 7 spec., Kotohira , 14–27.vii.1999, S. Hori leg. ( PT) ; 10 spec., Shirataki Village, Hirayama, 5.viii.1993, S. Hori leg. 5 spec., Rebun Town , Shiretoko , 18.vii.–1.viii.2001, S. Hori leg. ( FIT) ; 1 ♀, Rishiri Is., Mt. Rishiri , 2.ix.1991, N. Yasuda leg. HONSHU: 1 ♂, 1 ♀, Gunma Pref., Tsumagoi Village, Mt.Asashiki , 24.vii.1979, K. Itô leg. ( EUMJ) ; 1 ♀, Yamanashi Pref., Nirasaki City, Hôô-goya , 25.viii.1997, K. Hosoda leg. ; 1♂, same locality, 15.viii.2000. Specimens preserved in FUFJ when not stated otherwise .

Diagnosis. Coloration. Dorsum almost unicolor or bicolored, showing multiple color variations ( Figs. 93C, 93D, 93E, 93F, 93G View Fig ); head, pronotum, and scutellum brown, dark brown or blackish brown; elytra brown, often with dark brown or blackish brown stripes near elytral suture ( Figs. 93F, 93G View Fig ); antennomeres 1–6 and 8 brown; antennomeres 7, 9, 10, and basal 3/5 of antennomere 11 dark brown; apical 2/5 of antennomere 11 light brown.

Body 2.4–4.0 mm long, ca. 1.8× as long as wide ( Fig. 93A View Fig ). Head densely and minutely punctate, often bearing some large punctures ( Fig. 93A View Fig ); antennomeres 1–3 each longer than wide; antennomeres 4 about as long as wide; remaining antennomeres each wider than long; antennomere 11 oval ( Fig. 93H View Fig ). Pronotum simply and very feebly curved at posterior margin and densely and minutely punctate ( Fig. 93A View Fig ). Elytra not transversely strigose; each elytron with nine rows of punctures, bearing small number of large punctures and moderate number of very fine punctures between rows ( Fig. 93I View Fig ); row 9 invisible in dorsal view, subhumeral row as long as ca. 1/5 or 1/4 ( Fig. 93B View Fig ); rows composed of punctures larger than those of pronotum ( Fig. 93A View Fig ); sutural stria fine, reaching from apex to ca. apical half of the elytral length. Metathoracic wings fully developed. Mesoventrite without distinct excavation between median carina and transverse carina ( Fig. 93J View Fig ); median carina of mesoventrite low ( Fig. 93J View Fig ); metaventrite without sexual dimorphism. Legs indistinctly sexually dimorphic; protibiae gradually and very feebly widening from base towards apex ( Figs. 94F, 94G View Fig ); metafemur with a small dorsal projection posteroapically ( Figs. 94H, 94I View Fig ).

Male. Tarsomeres 2–4 of protarsi and mesotarsi feebly expanded ( Fig. 94A View Fig ); metatibiae very feebly curved inwards ( Figs. 94C, 94D View Fig ); abdominal sternite 8 weakly curved ( Fig. 95D View Fig ); aedeagus as shown in Figs. 95A, 95B View Fig ; inner sac as shown in Fig. 95C View Fig .

Female. Protarsi and mesotarsi slender ( Fig. 94B View Fig ); metatibiae almost straight ( Fig. 94E View Fig ); abdominal sternite 8 with spiculum ventrale at central point of anterior margin ( Fig. 95E View Fig ); coxites and stylus as shown in Fig. 95F View Fig .

Morphological variability. The present species is distributed in both Hokkaido and Honshu ( Fig. 109 View Figs ) and shows some regional morphological differences. One of the intraspecific variations is the dorsal color ( Figs. 93C, 93D, 93E, 93F, 93G View Fig ), and this difference does not correlate to regional populations. In contrast, the body size and male metatibiae have regional morphological differences. Most of the specimens collected from Hokkaido are less than 3 mm in length and the male metatibiae are very feebly curved inwardly ( Fig. 94 View Fig ). On the contrary, specimens from Honshu are more than 3.5 mm in length and the male metatibiae are weakly curved ( Fig. 94D View Fig ).

Differential diagnosis. Leiodes irregularis is similar to L. iwakirii sp. nov. in having a small body, but can be distinguished from the latter by the mesoventrite without a distinct excavation ( Fig. 93J View Fig ) and abdominal sternite 8 being weakly curved ( Fig. 95D View Fig ). In contrast, L. iwakirii sp. nov. has the mesoventrite with a distinct excavation ( Fig. 75E View Fig ) and abdominal sternite 8 strongly curved ( Fig. 76E View Fig ).

Distribution. Japan: Hokkaido, Rishiri Is., South Chishima Islands (Etorofu Is.), and Honshu (Gunma Prefecture and Yamanashi Prefecture). New to Hokkaido, Rishiri Is., and Honshu.

EUMJ

Japan, Matsuyama, Ehime University

EUMJ

Ehime University

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Leiodidae

Genus

Leiodes

Loc

Leiodes irregularis Portevin, 1927

Hoshina, Hideto 2012
2012
Loc

Liodes elongate

DAFFNER H. 1983: 87
PORTEVIN G. 1943: 168
1943
Loc

Leiodes portevini

DAFFNER H. 1983: 86
HATCH M. H. 1929: 35
1929
Loc

Liodes suturalis

PORTEVIN G. 1927: 75
1927
Loc

Liodes irregularis

PERREAU M. 2004: 196
DAFFNER H. 1983: 87
HATCH M. H. 1929: 35
PORTEVIN G. 1927: 76
1927
Loc

Liodes dichroa

DAFFNER H. 1983: 87
HATCH M. H. 1929: 36
PORTEVIN G. 1927: 76
1927
Loc

Liodes Grouvellei Portevin, 1927: 76

DAFFNER H. 1983: 87
HATCH M. H. 1929: 36
PORTEVIN G. 1927: 76
1927
Loc

Liodes intermedia

DAFFNER H. 1983: 87
HATCH M. H. 1929: 36
PORTEVIN G. 1927: 77
1927
GBIF Dataset (for parent article) Darwin Core Archive (for parent article) View in SIBiLS Plain XML RDF