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RECLASSIFICATION OF SUBFAMILY AGRYPNINAE 55 
(Candéze)) which possess well defined propleural tarsal grooves. The degree of 
development of these grooves is known to vary from one species to another. 
Similar grooves are found in the majority of species originally included in 
Diphyaulon (q.v.). 
Diphyaulon Arnett was proposed as a subgenus of Lepidotus [=Lacon in the 
present work] for species in which the pronotum has a pronounced median 
longitudinal furrow and ‘usually’ with well defined propleural tarsal grooves. 
These characteristics are of value at the specific level only and there is no justifica- 
tion for the retention of Diphyaulon, even as a subgenus. 
Aulacon Arnett. The three species attributed to this subgenus of Lepidotus 
[Lacon of the present work] do not differ from L. punctatus (Herbst) in any 
significant way. In my opinion, Arnett’s distinguishing characteristic, the absence 
of a pronounced median longitudinal furrow on the pronotum, is of no value at 
the generic, or even subgeneric, level. 
Zalepia Arnett was erected for those American species with shallow tarsal 
grooves on the propleurae and an irregular pronotal surface. These characters 
are very variable and of no value at the generic or subgeneric level. 
Kobulacon Chujo & Ohira. The type-species guadrinodatus Lewis possesses all 
the diagnostic features of Lacon. It differs from the type-species punctatus 
(Herbst) only by such very variable characters as the presence of tubercles on 
the pronotum and shallow propleural tarsal grooves. 
Lepidelater Smith was erected for a single species misticius Mignot. Despite 
the author’s comment that the genus resembles Lanelater, the type-species is a 
synonym of Lacon subcostata (Candéze). 
Arnettia Golbach. The genus is based on an error in the original description 
of the type-species. The second antennal segment is small, not large and triangular, 
like the third. 
Monocyrton Golbach. Only the presence of a posterior median tubercle on 
the pronotum distinguishes the members of this subgenus from L. punctatus 
(Herbst), the type-species of Lacon. Prothoracic tubercles, either singly or in 
pairs, occur in a large number of species and are of no value at the generic or even 
subgeneric level. 
Cornilacon Golbach. The subgenus is characterized by the antennal grooves 
which are deep anteriorly and shallow posteriorly. This character which occurs, 
developed to a greater or less degree, in many species throughout the world, is too 
variable to justify the retention of the subgenus. 
Latilacon Golbach. This South American subgenus was erected on the basis 
of the poorly defined propleural tarsal grooves and the presence of tubercles on 
the prothorax. The Japanese subgenus Kobulacon was based on the same variable 
characteristics. 
SEXUAL DIMORPHISM. Members of the genus do not show any marked sexual 
dimorphism. In some species, including the type-species, L. punctatus (Herbst), 
