74 ClaMi Be vione AWE KK 
Paralectotype: g, same locality as lectotype but dated Mai 1916 and without 
an identification label (MNHN, Paris). 
Lacon palliatus (Latreille) 
Elatey palliatus Latreille, 1809 : 230; pl. 16, fig. 3. 
Adeloceva chapuisiit Candéze, 1857 : 66; pl. 1, fig. 5. [Synonymized by Candéze, 1874 : 29.] 
Lacon (Monocyrion) palliata (Latreille); Golbach, 19696 : 157. 
The date of publication of Elater palliatus Latreille is usually recorded as 
1811: 145. This is the date on the title page of the re-issue of Humboldt and 
Bonpland’s Voyage ... etc. This work, and especially the 1809 edition, is 
very scarce and was probably unknown to many workers including Candéze 
(see below). 
The present location of the material collected by Humboldt and Bonpland is 
unknown to me. I consider it reasonable to assume that Latreille retained at 
least one specimen of the new species he described and that this specimen is now 
in the BMNH collection (see below). 
Elater palliatus Latreillee LECTOTYPE (present designation). MExIco: J, 
Dej. Mexico; Janson coll. 1903.130; Ad. chapuisii Cdze, Cand., Type; Agrypn. 
palliatus Dej. Cat. (e coll. Dejean) e mus. Latreille; Adelocera palliata Latr. (Elater 
palliatus Latr.) [locality and all determination labels in Janson’s handwriting] 
(BMNH). 
The published locality is “Trouvé parmi des gramineés pres de volcan de Jorillo, 
dans le Nouvelle Espagne’ [Mexico]. The specimen agrees well with the figure, 
especially as regards the markings on the elytra. The absence of Latreille’s 
determination label is probably due to Janson (see p. 276). 
Janson’s labels indicate that he believed this specimen to be the type of 4. 
chapuisit Candéze. This cannot be the case as the colour pattern on the elytra does 
not agree with Candéze’s figure. 
Adelocera chapuisu Candéze. The description is based on an unrecorded number 
of specimens from Mexico submitted by de la Ferté Sénectére. 
Type-material. There are no specimens in the BMNH determined by Candéze 
or from the de la Ferté Sénectére collections which agree with Candéze’s figure. 
?IRSNB, Brussels (see p. 271). 
Candéze lists Agrypnus palliatus De}. ed. 3. p. 99 as a Synonym of chapuisu, 
though Dejean (1833: 99) credits the species to Latreille and almost certainly had the 
type-material in his collection (see above and p. 277, Latreille collection). Candéze 
probably did not know of Latreille’s work in which palliatus was described. I believe 
that he based his synonymy on the following specimen: 3, Dej. Columbia [sic, 
Janson]; Adelocera palliata Latr. (Elater palliatus Latr); A. chappuisii Cdze, 
Agrypnus palliatus Dej. cat. (e coll Dejean) [both determination labels by Janson] 
in the BMNH. The markings of this specimen agree well with Candéze’s figure. 
The markings of the elytra vary considerably within the species and I believe that 
the synonymy is fully justified. 
