68 Ci Me FS von HAW ETS 
Lacon laoticus Fleutiaux 
Lacon laoticus Fleutiaux, 1927 : 68. 
LECTOTYPE (present designation). Laos: 3, Ht. Mekong, Ba ni Hona 25.3.20; 
Lacon laoticus Fleut., type [Fleut.] (MNHN, Paris). 
Lacon laticollis (Candéze) 
Elater pulverulentus Fabricius, 1801 : 228. [Junior primary homonym of Elater pulverulentus 
Panzer, 1795.| 
Adelocera laticollis Candéze, 1857: 59. Syn.n. 
Adelocera abervans Candéze, 1874 : 23. Syn. n. 
Aynettia abervvans (Candéze) Golbach, 1969b : 155. 
Lacon (Latilacon) laticollis (Candéze); Golbach, 19696 : 158. 
Elater pulverulentus Fabricius. LECTOTYPE (present designation). GUYANA: 
dg, small green label identifying Fabrician specimen (Zimsen, 1964: 12) Type 
[curatorial label]; Essequibo. Smidt. Mus. D. Sehestedt. Elater pulverulentus Fab. 
[mss. label replacing Fabricius’ label, see Zimsen, loc. cit.] (ZMU, Copenhagen). 
The published locality is ‘America meridionali. D. Smidt. Mus. D. de Sehestedt’. 
This species has not appeared in any catalogue or other work since Schoenherr 
(1817 : 280). 
Adelocera laticollis Candéze. Holotype. FRENCH GuIANA: 4, Laf. Cayenne; 
Janson coll. 1903 : 130; Adelocera laticollis Cdze, Cand., Type (e coll. de Laferté) 
[Janson]; nov. sp. Cayenne, Mus. Reiche (BMNH). 
The absence of Candéze’s determination label is probably due to Janson (see p. 276). 
Lacon laticollis (Candéze, 1857 : 59) is a junior secondary homonym of Lacon 
laticollis Candéze, 1857: 146 = Agrypnus laticollis (Candéze) (see p. 274) but as 
the two species are not congeneric the junior name does not require replacement 
(IRZN, Art. 59 (b)). 
Adelocera aberrans Candéze. LECTOTYPE (present designation). VENEZUELA: 
Q, Caracas; A. aberrans Cdz. type [Cand.]; Ex Musen A. Sallé 1897; Museum Paris, 
1952. Coll. R. Oberthur (NMHN, Paris). 
Candéze’s statement concerning the size of the second antennal segment is 
erroneous. It is not large and triangular like the third, but very small and 
moniliform. As the type material until recently stood unrecognised in the MNHN, 
Paris, it seems probable that Golbach based his interpretation of the species, for 
which he established the genus Arnettia, on Candéze’s misleading description and 
not on authentically identified material. 
Lacon lepidopterus (Panzer) comb. rev. 
Elater lepidoptera Panzer, 1801, part 76, no. 4. 
Lacon lepidoptera (Panzer) Fleutiaux, 1926 : 93. 
Adelocera lepidopteva (Panzer); Tscherepanov, 1957 : 189. 
The description is based upon material ‘Lectus semel Berolini [Berlin. EAST 

