Ptomaphaginus burckhardti, Schilthuizen & Perreau, 2008

Schilthuizen, Menno & Perreau, Michel, 2008, New species and new records of Ptomaphaginus Portevin from the Sunda region, Southeast Asia (Coleoptera: Leiodidae: Cholevinae), Zool. Med. Leiden 82 (19), pp. 189-210 : 202-203

Ptomaphaginus burckhardti spec. nov.

( figs 7-8 ).

Type material.— Holotype ♂: Malaysia: Sabah: Mount Kinabalu , 2600 m alt., 1.v.1987 leg. Burckhardt and Löbl ( MHNG) . Paratype: 1 ♂: same data as holotype ( CMPR) .

Diagnosis.— Habitus slender, ovoid. Uniformly light brown. Eyes reduced. Elytra laterally not curved, narrowed caudad in an approximately straight line. Male with a large and deep semicircular depression extended on the 5 th and 6 th visible abdominal sternites, bordered on the front half with long and dense hairs, and a central notch on the apical edge of the 6 th.

Description.— Habitus slender, ovoid, uniformly light brown. Length: 2.5 mm. Eyes reduced, each only 0.1 times as wide as the width of the head. Antennae slender, 1.25 times longer than the width of the head. Profemur as wide as the protibia. Pronotum 1.7 times as wide as long, with caudal corners slightly drawn out. Elytra slender, 1.25 times as long (measured from the caudal tip of the scutellum) as their combined width, the widest part at the base, the sides very slightly curved, rectilinearly narrowed from base to apex. Apterous. Male with a large and deep semicircular depression extended on the 5 th and 6 th visible abdominal sternites, bordered on the front half with long and dense hairs, and a central notch on the apical edge of the 6 th. Aedeagus ( figs 7-8 ) slender. The apex is tapered terminally and ends in a flattened, duck-bill-shaped processus. It carries several long, curved, lateral setae.

Distribution.— The single known specimen was found at high altitude on Mount Kinabalu.

Remarks.— At first glance, the species is similar to a Ptomaphaminus , because of the small size, the lack of pigmentation and reduced eyes, which suggest an adaptation to a deep montane litter biotope (as does the absence of wings). However, since it lacks the diagnostic thoracal characters of this genus, it is placed in Ptomaphaginus .

Etymology.— Dedicated to Daniel Burckhardt, who first collected this species.

Figures

Figs 7-12. Fig. 7, Ptomaphaginus burckhardti spec. nov., holotype; aedeagus, dorsal view. Fig. 8, P. burckhardti spec. nov., holotype; aedeagus, lateral view. Fig. 9, P. kurbatovi spec. nov., paratype (Cibodas); aedeagus, dorsal view. Fig. 10, P. kurbatovi spec. nov., paratype (Cibodas); aedeagus, lateral view. Fig. 11, P. sabahensis spec. nov., holotype; aedeagus, dorsal view. Fig. 12, P. sabahensis spec. nov., holotype; aedeagus, lateral view. All scale lines 100 µm.