Lutrochus Erichson
Creators: name: Maier, Crystal A.
name: Short, Andrew E. Z.
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Lutrochidae
Lutrochus

description: Key to Lutrochus Erichson species of Venezuela
1. Mesotibia with apical excavation for reception of tarsus (Figs. 25, 31)............................................ 2
- Mesotibia lacking apical excavation for reception of tarsus (Fig. 44)............................................. 7
2. Elytra explanate, epipleuron appearing broad in ventral aspect (Figs. 9, 10); reddish-brown in color; prosternum strongly deflexed ventrally in anterior half (Fig. 12); apical maxillary palpomere strongly triangular (Fig. 11)................................................................................................ Lutrochus acuminatus Grouvelle
- Elytra not explanate, epipleuron appearing narrow in ventral aspect (Figs. 15, 16, 21, 22); dark brown to black in color; prosternum very slightly or not deflexed ventrally in anterior half (Fig. 15); apical maxillary palpomere weakly triangular to discshaped (Figs. 33, 37)................................................................................... 3
3. Body size small, total length 2.5–4.5 mm ................................................................... 4
- Body size large, total length 4.6–5.5 mm ................................................................... 5
4. Apical maxillary palpomere rounded to disc-shaped (Fig. 37); apical metatarsomere setose (Fig. 38); length 2.5–3.2 mm ......................................................................................... L. maldonadoi n. sp.
- Apical maxillary palpomere triangular (Fig. 30); apical metatarsomere entirely glabrous (Fig. 32); length 3.0–4.0 mm............................................................................................... L.vestitus Sharp
5. Apical protarsomere entirely glabrous (Fig. 23)............................................... L. gustafsoni n. sp.
- Apical protarsomere at least partially pubescent(Figs. 18, 58)................................................... 6
6. Apical protarsomere with discrete pubescent patch in basal third, apical two-thirds glabrous (Fig. 18); body without metallic sheen dorsally (Fig. 14).................................................................. L. cauraensis n. sp.
- Apical protarsomere pubescent, although more sparse in apical half (Fig. 58); body with bluish-violet metallic sheen dorsally (Fig. 55)............................................................................... L. violaceus n. sp.
7. Metasternum with medial circular glabrous patch (Fig. 45); scutellum diamond-shaped (Fig. 46); elytron with seven rows of shallow punctures (Fig. 40); apical maxillary palpomere narrow (Fig. 43)......................... L. meridaensis n. sp.
- Metasternum without medial circular glabrous patch (Fig. 49); scutellum triangular (Fig. 52); elytral punctation dense, confused (Fig. 51); apical maxillary palpomere wide (Fig. 53)........................................ L. minutus n. sp.
description: Published as part of Maier, Crystal A. & Short, Andrew E. Z., 2013, A revision of the Lutrochidae (Coleoptera) of Venezuela, with description of six new species, pp. 285-307 in Zootaxa 3637 (3) on page 306, DOI: 10.11646/zootaxa.3637.3.3, http://zenodo.org/record/216877