Macrotomoderus kabaki, 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 : 42-45

Macrotomoderus kabaki sp. nov.

urn:lsid:zoobank.org:act:1902038B-5421-46BB-940A-D0E1BD9D92D0

Figs 24–25

Differential diagnosis

See above for diagnosis of M. belousovi sp. nov. and below for key to species.

Etymology

Patronymic. Named in honour of one of the first collectors, Ilya I. Kabak (All-Russian Institute of Plant Protection, St Petersburg, Russia).

Type material

Holotype CHINA • ♂; “CHINA, Yunnan, W of Lugu Lake, 27°42′53″N 100°34′54″E 3460 m, 27.v.2012 Belousov, Davidian, Kabak & Korolev ”; ZIN.

Paratypes (4 specimens) CHINA • 1 ♂, 1 ♀; same label as for holotype; ZIN • 1 ♂, 1 ♀ (collected and mounted on card in copula); same label as for holotype; DTC .

Description

MEASUREMENTS. Holotype, total body length 4 mm; head 0.85 mm long, across eyes 0.8 mm broad, pronotum 1.05 mm long, maximum width 0.75 mm, minimum width 0.35 mm, elytra 2.1 mm long, 1.5 mm combined wide. Selected paratypes 4.25–4.5 mm long.

Dorsum and venter uniformly brown. Mouthparts, antennae, palps and legs yellowish-brown. Head ovoid with moderately large, ovoid compound eyes, which are slightly protruding beyond head outline laterally. Head rounded in broad arc posterior to eyes. Clypeus truncate at anterior margin. Head dorsal punctures minute and inconspicuous. Head dorsal setae inconspicuous, sparse. Antennae nearly touching base of pronotum. Antennomere three about 1.25× as long as antennomere two, antennomeres 8–10 transverse, of them 9–10 strongly transverse ( Fig. 24D ). Terminal antennomere triangular with rounded 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. 24B ). Both lobes flattened in lateral view ( Fig. 24C ). Lateral constriction slightly continues onto disc in lateral view, shallow ( Fig. 24C ). Lateral pronotal fovea moderately broad at lower external margin of pronotum, widens upwards towards pronotal disc in lateral view, external margins protruding into a pair of moderately widely separated denticles (in lateral view), of which anterior denticle strongly obtuse and posterior subacute (in lateral view). Cavity in lateral wall of pronotum between lateral denticles not observed since the area laterally concealed by dense, whitish setae. In dorsal view, lateral pronotal fovea broad, anterior and posterior pair of denticles appear near rectangular to obtusely angulate, glabrous ( Fig. 24B ). Pronotal punctures minute on disc; lateral constriction dorsally with dense, irregularly shaped, moderately large punctures and median longitudinal carina that is projected to approximately midlength of anterior pronotal lobe. Dorsal pronotal setae inconspicuous, moderately long. Scutellar shield small, apically rounded. Elytra dorsally elongate elliptical, flattened in lateral view, widened laterally around midlength, shoulders obsolete (apterous species). Elytral apices subtruncate. Elytral punctures moderately large, rather dense, not becoming smaller and sparser towards apices. Elytral setae long and sparse, suberect. Male tergite and morphological sternite VII broadly rounded at posterior margin. Aedeagus as in Fig. 25 , robust, elongate, apicale filled with dense, moderately strong, irregularly shaped and positioned, in part obtusely spinose gonopore armature.

Sexual dimorphism

Poorly indicated. Female antenna comparatively shorter than male.

Ecology

Collected at 3460 m elevation.

Distribution

Known only from surrounding of Lugu Lake, northern part of Yunnan Province, SW China.

Figures

Fig. 24. Macrotomoderus kabaki sp. nov., holotype, ♂ (ZIN). A. Habitus, dorsal view. B. Forebody, dorsal view. C. Ditto, lateral view. D. Antennomeres 8–11 of the left antenna. Scale bar: A = 1 mm; B–D not to scale.

Fig. 25. Macrotomoderus kabaki sp. nov., holotype, ♂ (ZIN), aedeagus. A–B. General view, different positions. C. Gonopore armature, median portion of apicale. D. Ditto, basal portion of apicale. E. Apical portion. Not to scale.