1969] 
Ponomarenko — Cretaceous Insects 
307 
SC 
Figure 1. Elytron of Labradorocoleus carpenteri, gen. nov., sp. nov. 
Interpretation of venation based on Tshekardocoleidae. 
first fossil cupedid from that region. In structure, the elytron is 
similar to that of Omma and T etraphalerus (these two genera being 
indistinguishable on elytral structure). Modern Omma occurs in 
Australia, and T etraphalerus in South America, but numerous fossils 
of these beetles have been found in Mesozoic deposits of Europe 
and Asia (Ponomarenko, 1968). The other specimen (no. 87273) 
from Labrador is unquestionably representative of a new family. 
This elytron shows a number of primitive features and is related to 
the Lower Permian family Tshekardocoleidae (Rohdendorf, 1944; 
Ponomarenko, 1963, 1969; Kukalova, 1965, 1969) from Russia and 
Czechoslovakia. Among the thousands of Permian and Mesozoic 
beetles studied by the author, there are no other members of this 
new family or forms intermediate between it and the tshekardocoleids. 
Family Labrodorocoleidae, fam. nov. 
This family is based on a single genus, Labradorocoleus, gen. nov., 
known only from an elytron. Elytron very convex basally, flattened 
to the apex, which is rounded. Epipleural (costal) space very wide 
in the proximal half, with several rows of large rounded cells. Vena- 
tion of elytron cellulate, the principal and intermediate longitudinal 
veins being clearly distinguishable. Seven principal longitudinal veins 
present and parallel to the sutural margin. The nomenclature of 
these veins, based on a comparison with elytral venation of the 
tshekardocoleids, is shown in figure 1. A3 is very long; two rows 
of cells present between A3 and A4, one row of distinct cells between 
A4 and the sutural margin. 
This new family is related to the Tshekardocoleidae by having a 
wide epipleural margin with several rows of cells, two Rs veins, 
a long A3, two rows of cells between A3 and A4, and one row 
