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

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Psammoecus incertior Blackburn, 1903


Psammoecus incertior Blackburn, 1903

Fig. 2 View Fig

Psammoecus incertior Blackburn, 1903: 154 .

Psammoecus incertior – Hetschko 1930: 83.


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


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 .


Australia (Queensland).


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 .


Natural History Museum, London


Australian National Insect Collection














Psammoecus incertior Blackburn, 1903

Karner, Michael 2020

Psammoecus incertior

Hetschko A. 1930: 83

Psammoecus incertior

Blackburn T. 1903: 154