Lybnopaeus Kazantsev, 1998

Kazantsev, Sergey V., 2021, New and little known taxa of neotenic lyropaeine net-winged beetles (Coleoptera Lycidae), Zootaxa 4965 (3), pp. 437-460 : 438

Genus Lybnopaeus Kazantsev, 1998

Lybnopaeus Kazantsev, 1998: 16 .

Type species: Lyropaeus avernus Kazantsev, 1997 (by original designation).

Diagnosis. The genus can be easily differentiated from the somewhat similar Lyropaeus Waterhouse, 1878 by the concave anterior margin of prosternum, short spiculum gastrale composed of a pair of non-fused apodemes, relatively wide tarsomeres 1–4 and different type of the aedeagus, with broad and rounded phallobase, dentate parameres and laterally flattened median lobe, provided with long, bulging distally basal apodemes penetrating deep into the phallobase ( Figs 1–5 ). In contrast, Lyropaeus species have convex anteriorly prosternum, long uniform spiculum gastrale, narrow tarsomeres 1–4 and elongate, narrowing proximally phallobase, non–dentate parameres and the laterally widened median lobe of the male genitalia, with distally acute basal apodemes penetrating only slightly into the phallobase ( Figs 9–10 ).

Distribution. Borneo (Sabah).

Figures

FIGURES 1–5. General view and details of Lybnopaeus avernus, male: 1–2—general view; 3—terminal abdominal segments; 4–5—aedeagus; 1, 3—dorsal view; 2, 4—ventral view; 5—lateral view. Scale bars: 0.5 mm.

FIGURES 6–10. General view and details of Lyropaeus (Lyroneces) orcinus, holotype male: 6–7—general view; 8—terminal abdominal segments; 9–10—aedeagus; 6, 8—dorsal view; 7, 9—ventral view; 10—lateral view. Scale bars: 0.5 mm.