Psammoecus obesus Grouvelle, 1919

Karner, Michael, 2020, Taxonomic Studies on Australian Psammoecus Latreille (Coleoptera, Silvanidae, Brontinae), European Journal of Taxonomy 723, pp. 135-158: 142-144

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-FF8A-BA4A-FDE4-FD9386BFFE09

treatment provided by

Valdenar

scientific name

Psammoecus obesus Grouvelle, 1919
status

 

Psammoecus obesus Grouvelle, 1919  

Fig. 3 View Fig

Psammoecus obesus Grouvelle, 1919: 11   .

Psammoecus obesus   – Hetschko 1930: 83.

Diagnosis

The following combination of character states distinguishes this species: body elongate-oval ( Fig. 3A View Fig ), length 3.08–3.29 mm; eyes large ( Fig. 3B View Fig ), irregularly rounded with stronger curvature posteriorly; temples distinct, short, strongly curved; frontal grooves distinct, diverging anteriorly, parallel near end; reaching anterior ²⁄5 of eyes; antennae stout ( Fig. 3D View Fig ), antennomere 8 slightly darkened, antennomeres 9–10 darkened, antennomere 11 bright yellowish-brown; punctation on vertex moderate, punctures distinctly elongate, as large as eye facet diameter; microsculpture on vertex absent, pubescence moderate; pronotum widest just in front of middle ( Fig. 3C View Fig ), lateral pronotal margins with five teeth; tooth I slightly and tooth V distinctly bigger than II–IV, distance between I and II wider than distances between other teeth, anterior and posterior denticles present, small; pronotal punctation dense, punctures as large as on vertex, distinctly widened, microsculpture absent, pubescence moderate, setae directed medially; elytra widest at middle ( Fig. 3A View Fig ), with transverse brown maculae behind middle, interstices distinctly wider than striae, pubescence moderate, microsculpture absent; male genitalia ( Fig. 3 View Fig E–H) strongly sclerotised, median lobe in dorsal view wide, narrowed abruptly near ostium, apical end well rounded, in lateral view also narrowed abruptly, with sharp apical end; parameres in ventral view very wide, inner margins, apex and apical third of lateral margins with distinct setae; in lateral view with very wide basis, narrowed abruptly towards apex with dorsal margin almost forming angle.

Material examined

Holotype

INDONESIA • ♀; Maluku, Seram; Pascoe leg.; “HOLO - | Type ” [round label with red border]; “Ceram” [blue, elliptic label]; “Pascoe | Coll. | 93–60”; “ Psammoecus   | obesus   | ty. Grouv” [Grouvelle’s hand]; “ HOLOTYPUS | Psammoecus   | obesus Grouv. 1919   | det. R.G. Booth 2013”; NHMUK.  

Other material

AUSTRALIA • 1 spec.; Queensland, Cairns ; 16°55′ S, 145°46′ E; 1942; Perkins leg.; NHMUK • 1 spec.; Queensland, Cassowary Coast Region , 10 km NE of Tully; Nov. 1994; C. Reid leg.; rainforest; ANIC   1 spec.; Queensland, Cassowary Coast Region, Cardstone ; 1–2 Dec. 1966; J.G. Brooks leg.; ANIC   1 spec.; Queensland, Shire of Cook, McIlwraith Range ; 500 m a.s.l.; 13°45′ S, 143°22′ E; 27 Jun.–12 Jul. 1989; T.A. Weir leg.; at light; ANIC GoogleMaps   1 spm; Queensland, Shire of Douglas, Daintree ; 29 Oct. 1966; E. Britton leg.; dead leaves, edge of rainforest; ANIC   1 spm; same data as for preceding; MKF   .

GoogleMaps  

INDONESIA • 2 specs; West Papua, Waigeo, Camp Nok ; 2500 ft a.s.l.; 0°12′ S, 130°50′ E; Apr. 1938; Cheesman leg.; NHMUK GoogleMaps   .

Distribution

The species has been found in Australia (Queensland) and Indonesia.

Remarks

Psammoecus obesus   is closely related to P. hirsutus Grouvelle, 1883   , P. decoratus Grouvelle, 1919   , and P. signatus Grouvelle, 1919   . It differs from all three by the shape of the male genitalia.

ANIC

Australia, Australian Capital Territory, Canberra City, CSIRO, Australian National Insect Collection

NHMUK

Natural History Museum, London

ANIC

Australian National Insect Collection

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Silvanidae

Genus

Psammoecus

Loc

Psammoecus obesus Grouvelle, 1919

Karner, Michael 2020
2020
Loc

Psammoecus obesus

Hetschko A. 1930: 83
1930
Loc

Psammoecus obesus

Grouvelle A. 1919: 11
1919