Macrotomoderus hartmanni, Telnov, 2022

Telnov, Dmitry, 2022, Revision of the Tomoderinae (Coleoptera: Anthicidae). Part III. New species and records of Macrotomoderus Pic, 1901 from China and a key to the Palaearctic species, European Journal of Taxonomy 797, pp. 1-100 : 32-35

Macrotomoderus hartmanni sp. nov.

urn:lsid:zoobank.org:act:C69A07A9-DE1E-468E-BCFD-F720BE621D2D

Figs 18–19

Differential diagnosis

See key to species below.

Etymology

Patronymic. This species is named after the famous coleopterist, explorer of the Himalayas and my good friend Matthias Hartmann, Director of the Naturkundemuseum Erfurt ( Germany) to celebrate his 60 th birthday in 2021.

Type material

Holotype CHINA • ♂; “CHINA, Yunnan, S Pungchuan, 1.65 km E Mahuacun Vill. 2835 m, 2.vi.2019 Belousov, Davidian & Kabak leg. // 25°54′26″N 100°46′35″E ”; ZIN.

Description

MEASUREMENTS. Holotype, total body length 4.7 mm; head 0.95 mm long, across eyes 0.85 mm broad, pronotum 1.1 mm long, maximum width 0.85 mm, minimum width 0.4 mm, elytra 2.65 mm long, 1.8 mm combined wide.

Dorsum and venter uniformly brown, pronotum inconspicuously paler. Mouthparts, antennae, palps and legs yellowish-brown. Head ovoid with moderately large, ovoid compound eyes, which are not protruding beyond head outline laterally. Head rounded in broad arc posterior to eyes. Head dorsal punctures minute and inconspicuous. Head dorsal setae inconspicuous, sparse. Antennae extending slightly over base of pronotum. Antennomere three about 1.25× as long as antennomere two, antennomeres 7–10 transverse, of them 8–10 strongly transverse. Terminal antennomere triangular with pointed apex, twice as long as penultimate antennomere. Terminal maxillary palpomere securiform. Pronotum with broad and medially deeply notched postmedian lateral constriction. Front margin of anterior lobe broadly rounded, dorsally without anterior rim ( Fig. 18B ). Anterior and posterior lobe convex in lateral view ( Fig. 18C ). Lateral constriction continues onto disc in lateral view, shallow ( Fig. 18C ). Lateral pronotal fovea rather narrow at lower external margin of pronotum, widens upwards towards pronotal disc in lateral view, external margins protruding into a pair of subacute (in lateral view), glabrous, narrowly separated denticles (in lateral view). Cavity in lateral wall of pronotum between lateral denticles small, elliptical. In dorsal view, lateral pronotal fovea broad, anterior and posterior pair of denticles appear obtusely angulate, glabrous ( Fig. 18B ). Pronotal punctures minute on disc; lateral constriction dorsally with numerous dense, variably sized punctures. Dorsal pronotal setae inconspicuous, moderately long. Scutellar shield minute, triangular. Elytra dorsally elliptical, convex in lateral view, strongly widened laterally around midlength, lateral margins evenly broadly rounded, shoulders obsolete (apterous species). Elytral punctures much stronger and larger than those on dorsal forebody, becoming less prominent on posterior third of elytra. Elytral setae long and sparse, suberect. Male tergite and morphological sternite VII broadly rounded at posterior margin. Aedeagus as in Fig. 19 , short, broadly hook-shaped, with peculiar gonopore armature. Basale with a broad multi-row ‘garland’ of pebble-like constituting pieces. Gonopore armature of apicale of very dense, irregularly shaped and positioned constituting pieces.

Sexual dimorphism

Female is unknown.

Ecology

Collected at 2835 m elevation.

Distribution

Known only from east of Erhai Lake, northern part of Yunnan Province, SW China.

Figures

Fig. 18. Macrotomoderus hartmanni sp. nov., holotype, ♂ (ZIN). A. Habitus, dorsal view. B. Forebody, dorsal view. C. Ditto, lateral view. Scale bar: A = 1 mm; B–C = not to scale.

Fig. 19. Macrotomoderus hartmanni sp. nov., holotype, ♂ (ZIN), aedeagus. A–B. General view, different positions. C. Gonopore armature, extracted from basale. D. Ditto, apical portion of basale. E. Apical portion of apicale. Not to scale.