Psammoecus incertior Blackburn, 1903

Karner, Michael, 2020, Taxonomic Studies on Australian Psammoecus Latreille (Coleoptera, Silvanidae, Brontinae), European Journal of Taxonomy 723, pp. 135-158: 140-142

publication ID

https://doi.org/10.5852/ejt.2020.723.1149

publication LSID

lsid:zoobank.org:pub:9EF35D01-815A-4DD0-8AC2-CC65E19B81B4

persistent identifier

http://treatment.plazi.org/id/038BAF3B-FF88-BA44-FDF2-FD5383D0FDE5

treatment provided by

Valdenar

scientific name

Psammoecus incertior Blackburn, 1903
status

 

Psammoecus incertior Blackburn, 1903  

Fig. 2 View Fig

Psammoecus incertior Blackburn, 1903: 154   .

Psammoecus incertior   – Hetschko 1930: 83.

Diagnosis

The following combination of character states distinguishes this species: body elongate-oval ( Fig. 2A View Fig ), length 2.86–3.30 mm; eyes large ( Fig. 2B View Fig ), unevenly rounded with distinctly stronger curvature posteriorly; temples very short; frontal of moderate length, diverging anteriorly, almost parallel posteriorly, reaching anterior ²⁄5 of eyes; antennae somewhat short ( Fig. 2D View Fig ), stout, antennomere 8 castaneous, antennomeres 9–10 piceous; antennomere 11 yellowish brown; punctation on vertex moderate ( Fig. 2B View Fig ), punctures strongly elongate, almost twice as long as eye facet diameter, microsculpture absent, pubescence moderate; pronotum widest at anterior third ( Fig. 2C View Fig ), lateral pronotal margins with six small but distinct teeth; teeth II, V, and VI somewhat larger than others, anterior denticles small, posterior denticles very small; pronotal punctation moderate, punctures distinctly widened, microsculpture absent, pubescence moderate, setae directed medially; elytra widest just in front of middle ( Fig. 2A View Fig ), with large brown medio-lateral maculae and small darkened area at posterior third of suture, striae as wide as interstices, pubescence moderate, microsculpture absent; male genitalia strongly sclerotised ( Fig. 2 View Fig E–H), median lobe slender, evenly narrowed towards apex, tip blunt in dorsal view; curved ventrally with sharp tip in lateral view; parameres short, wide, with short protrusion at postero-lateral margin, two long setae near protrusion and few short setae along inner margins.

Material examined

Holotype

AUSTRALIA • ♂; “ Type | H.T.” [round label with red border]; “Australia. | Blackburn Coll. | B.M.1910- 236.”; “ Psammoecus   | incertior Blackb.   ”; NHMUK.

 

Other material

AUSTRALIA – Queensland • 1 spec.; Cairns ; 16°55′ S, 145°46′ E; May1947; ANIC GoogleMaps   2 specs; Cassowary Coast Region, Palmerston National Park , 1 mi. E of Crawford’s Lookout; 17°36′ S, 145°48′ E; 6 Nov. 1966; Britton leg.; under bark; ANIC GoogleMaps   2 specs; Shire of Mareeba, Kuranda ; 16°49′ S, 145°38′ E; Oct. 1950; ANIC GoogleMaps   6 specs; same locality; 16°49′ S, 145°38′ E; Feb. 1950; ANIC GoogleMaps   3 specs; same locality; Feb. 1909; Bryant leg.; NHMUK GoogleMaps   1 spec.; same data as for preceding; MKF GoogleMaps   1 spec.; Shire of Mareeba, 6 km NE of Kuranda, Black Mt Road ; 16°46′ S, 145°40′ E; 21 May 1976; Britton leg.; MKF GoogleMaps   2 specs; Tablelands, 6.8 km W of Atherton, Russel River Crossing ; 17°26′ S, 145°54′ E; 11 Jun. 1992; Reid leg.; rainforest, beaten; ANIC GoogleMaps   1 spec.; Townsville Regional City, Magnetic Island ; 19°8′ S, 146°50′ E; Jul. 1921; Carter leg.; ANIC GoogleMaps   .

Distribution

Australia (Queensland).

Remarks

The colouration of this species is rather variable, but the general pattern remains constant. A very distinct character is the peculiar shape of the male parameres, which differs considerably from all other known species of Psammoecus   .

NHMUK

Natural History Museum, London

ANIC

Australian National Insect Collection

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Silvanidae

Genus

Psammoecus

Loc

Psammoecus incertior Blackburn, 1903

Karner, Michael 2020
2020
Loc

Psammoecus incertior

Hetschko A. 1930: 83
1930
Loc

Psammoecus incertior

Blackburn T. 1903: 154
1903