Laricobius

Leschen, Richard A. B., 2011, World review of Laricobius (Coleoptera: Derodontidae), Zootaxa 2908, pp. 1-44 : 4

Key to the species of Laricobius

1. Lateral margins of prothorax explanate with lateral carina well developed (fig 10); anterior pronotal foveae visible in dorsal view................................................................................................ 2 Lateral margins of prothorax not strongly explanate with lateral carina reduced only to a bead (fig 12); anterior pronotal foveae visible only in lateral view............................................................................. 13 2.(1) Ocelli absent from head................................................................................. 3 Ocelli present on vertex of head......................................................................... 6 3.(2) Tibiae pale (see fig 8); orange color of elytra more vivid (fig 14); apex of medium lobe acute (fig 43).. L. naganoensis n. sp. Tibiae dark, about same color as the ventrites (fig 4); lighter color of elytra less vivid (figs 9, 16, 20); apex of medium lobe rounded to subacute (figs 39, 45, 49)...................................................................... 4 4.(3) Posterior pronotal tooth absent (fig 80)........................................ L. osakensis Montgomery & Shiyake Posterior pronotal tooth present (fig 14).................................................................... 5 5.(4) Median carina of basal piece present (fig 48); color of elytra mainly dark red-brown (fig 9); Taiwan.............................................................................................. L. taiwanensis Yu & Montgomery Median carina of basal piece absent (fig 39); color of elytra light red-brown to light tan (fig 20); China...................................................................................... L. kangdingensis Zilahi-Balogh & Jelínek 6.(2) Head darker than pronotum ( Fig 3 ); color of hypomera and proventrite dissimilar.................................. 7 Head the same color as pronotum (fig 5); color of hypomera and proventrite the same............................... 9 7.(6) Anterior ½ of pronotum with sides subparallel (fig 1)......................... L. baoxingensis Zilahi-Balogh & Jelínek Anterior ½ of pronotum with sides convex (fig 11)........................................................... 8 8.(7) Pronotum with evenly rounded sides; Caucasus................................................ L. caucasicus Rost Pronotum with weakly angulate sides; western North America...................................... L. laticollis Fall 9.(6) Tibiae pale, lighter than femora........................................................................ 10 Tibiae dark and same color as femora.................................................................... 11 10.(9) Most specimens bicolored (fig 5), otherwise black (fig 6); apex of median lobe acute to rounded (fig 36).................................................................................................. L. erichsonii Rosenhauer Body unicolored dark brown (fig 18); apex of median lobe apiculate (fig 47)....................... L. sahlbergi Reitter 11.(9) Body unicolored black (fig 15)............................................................ L. nigrinus Fender Body bicolored (figs 10, 17)........................................................................... 12 12.(11) Posterior pronotal tooth present (fig 14); apices of parameres with an internal ridge; median lobe rounded to subacute (fig 46)..................................................................................... L. rubidus LeConte Posterior pronotal tooth absent (fig 80); apices of parameres without an internal ridge; median lobe acute (fig 40).............................................................................................. L. kovalevi Nikitsky 13.(1) Scutellum pale, body color uniform tan (fig 13)......................................... L. mirabilis Háva & Jelínek Scutellum dark, body color different and not completely tan................................................... 14 14.(13) Head and epipleura pale (fig 19); anterior pronotal tooth absent......................... L. schawalleri Háva & Jelínek Head and epipleura dark; anterior pronotal tooth present (fig 13)............................................... 15 15.(14) Elytral punctures separate and not confluent (fig 21)............................................. L. wittmeri Háva Elytral punctures posteriorly confluent, or at least contained within deep grooves (fig 12)........................... 16 16.(15) Elytra bicolored (fig 2)..................................................................... L. bicolor Háva Elytral color uniform.................................................................................. 17 17.(16) Color of head darker than pronotum (fig 7).................................................. L. incognatus Háva Color of head the same as the pronotum, body unicolored..................................................... 18 18.(17) Femora pale; prothorax transverse (fig 8)......................................................... L. jizu Háva Femora dark; prothorax elongate to quadrate............................................................... 19 19.(18) Tibiae dark (fig 4); elytral surface incurvate; median carina of basal piece absent (fig 35)............... L. daliensis Háva 20.(19) Tibiae pale (fig 12); elytral surface flat; median carina of basal piece present (fig 42)............ .. L. loebli Jelínek & Háva

Figures

FIGURES 1 – 4. Dorsal habitus. 1, Laricobius baoxingensis; 2, L. bicolor; 3, L. caucasicus; 4, L. daliensis.