Pediomorphus planiusculus Chaudoir, 1878

Will, Kipling, 2019, Taxonomic Review of the Australian Genus Pediomorphus Chaudoir, 1878 (Coleoptera: Carabidae: Abacetini), The Coleopterists Bulletin 73 (3), pp. 629-645 : 631

Pediomorphus planiusculus Chaudoir, 1878

( Figs. 1 , 14, 15 , 20 , 21 )

Type Material. Six syntypes, MNHN ( Moore et al. 1987), not examined.

Type Locality. Melbourne , Victoria, Australia.

Material Examined. QUEENSLAND: 16 specimens - Townsville , i.1945: EMEC705203 - EMEC705217 , EMEC705229 ; 5.ii.1945, EMEC705218 , EMEC705201 ; 9.i.1945, EMEC705202 , B Malkin, [ USNM]. 2 specimens- Kowanyama, 11.vii.1990, Grimshaw and Waterhouse , [ QDAF]. Gayndah , EMEC705220 , [ MNHN]. North of Mareeba , ii.1958, Darlingtons , EMEC705221 , [ MCZ]. Rd to Broadwater @ Blackbull Ck , 17°54’28” S 141°08’45” E, 31.xii.2001, UV Light, K Will, EMEC705224 , [ EMEC] . NEW SOUTH WALES: 4km W Wee Waa, under plant debris in wet ditch, 27.xi.2010, 30°13’28” S 149°23’39” E, K Will, KWW848, EMEC705223 , [ EMEC]. East bank of Marthaguy Ck., opposite Quilbone Bore #2 track, 147°42’15” E 30°46’20” S, 24.xi-14.xii.1999, E. camaldulensis [Red River Gum] patch, Wilikie, Harris and Moulds, DRRP012/04 pitfall, k 175449, [ AMS] . NORTHERN TERRITORY: Between Roper Bar and Borroloola, Savannah Way , Limmen NP., 54 m, light, 135°05’41” E 14°58’13” S, 29.iv.2009, M. Langer [cWR] .

Distribution Range. In the east from southern Victoria to northern Queensland and northeastern Northern Territory ( Fig. 20 ).

Notes. Size ranges among the specimens examined are sbl = 4.9–8.4 mm, elytral width = 1.6–2.3 mm, and ocular ratio = 1.26–1.43. The appearance of the elytral infuscated area is typically like that in the individual in Fig. 1 ; however, it is extremely variable. The dark region can cover nearly the entire elytral disc and be very dark or quite indistinct. The darker region may be truncated and the basal third of the elytra is the ground color. In other specimens, the infuscation is nearly oval, restricted to the central region and only reaches the fourth interval. The first interval is frequently paler.

Figures

Figs. 1–2. Pediomorphus species, dorsal habitus. 1) P. planiusculus; 2) P. elongatus. Scale bars = 1 mm.

Figs. 14–18. Pediomorphus species. P. planiusculus: 14) Labial palp; 15) Base of right elytron. P. crenulatus: 16) Base of right elytron. P. macleayi: 17) Head, showing large antennomere 1. P. robustus: 18) Ventral view of head, arrow indicating subocular carina.

Fig. 20. Localities of Pediomorphus species based on material examined and type localities.

Figs. 21–32. Pediomorphus species, aedeagi, left lateral view (A) and ventral view of tip (B). 21) P. planiusculus; 22) P. elongatus; 23) P. macleayi; 24) P. ruficollis; 25) P. variabilis; 26) P. crenulatus; 27) P. minor; 28) P. semilaevis; 29) P. punctatus; 30) P. robustus; 31) P. storeyi; 32) P. obtusus.