Lachnaces Bates, 1872

Erwin, Terry L. & Zamorano, Laura S., 2014, A synopsis of the tribe Lachnophorini, with a new genus of Neotropical distribution and a revision of the Neotropical genus Asklepia Liebke, 1938 (Insecta, Coleoptera, Carabidae), ZooKeys 430, pp. 1-108 : 15

Lachnaces Bates, 1872 Dull downy-bellied beetles Figs 14 , 26

Lachnaces Bates, 1872:201

Type species.

Lachnaces sericeus Bates, 1872:202

Way of life.

Size range - 3.2 mm to 5.4 mm; these small beetles occur in Amazonian inundation forests of the Varzea and Igapó systems. Adults occur in very wet leaf litter and in rotten wood in swampy areas. One adult was found by insecticidal fogging of the suspended fronds of an Astrocaryum palm; no doubt it was seeking refuge from inundation.

Distribution.

Brazil, Perú.

Notes.

Currently, three described species are assigned to this genus: however, eight species are represented in the NMNH collection. A taxonomic revision of the group is needed.

References.

Ball and Hilchie (1983); Erwin (1991); Ball and Bousquet (2000).

Figures

Figure 11 - 14. 11 Euphorticus sp. (only Euphorticus pubescens (Dejean) is known from Mexico and this is not that species). Digital Photo-illustration. Habitus, dorsal aspect, based on specimen ADP 132558 from Tapilulu, Mexico 12 Guatemalteca virgen Erwin. Digital Photo-illustration. Habitus, dorsal aspect, based on specimen ADP 132546 from nr. La Virgen, Costa Rica 13 Homethes sp. Digital Photo-illustration. Habitus, dorsal aspect, based on specimen ADP 133797 from Australia 14 Lachnaces sp. (at present this genus has three described species, all from the upper Amazon Basin). Digital Photo-illustration. Habitus, dorsal aspect, based on specimen ADP 132578 from Tambopata Reserved Zone, Explorer's Inn, Peru.

Figures 23 - 28. Mouthparts of adults. 23 Eucaerus sp. Mouthparts, ventral aspect, based on specimen ADP 132552 from Pakitza, Peru 24 Euphorticus sp. Mouthparts, ventral aspect, based on specimen ADP 132558 from Tapilula, Mexico 25 Guatemalteca virgen Erwin. Mouthparts, ventral aspect, based on specimen ADP 132546 from nr. La Virgen, Costa Rica 26 Lachnaces sp. Mouthparts, ventral aspect, based on specimen ADP 132578 from Tambopata Reserved Zone, Explorer's Inn, Peru 27 Lachnophorus sp. Mouthparts, ventral aspect, based on specimen ADP 132570 from Pakitza, Peru 28 Pseudophorticus sp. Mouthparts, ventral aspect, based on specimen ADP 132538 from Pakitza, Peru. Legend: a 3 Antennomere 3; mt Mentum tooth; m Mentum; lp 3 Labial palpomere 3; mp 4 Maxillary palpomere 4.