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 Author Telnov, Dmitry F78B0D3E-E409-4054-A834-E6C06918B62F Department of Life Sciences, Natural History Museum, Cromwell Road, SW 7 5 BD, London, United Kingdom & Institute of Biology, University of Latvia, O. Vācieša iela 4, LV – 1004, Rīga, Latvia. Coleopterological Research Center, Institute of Life Sciences and Technology, Daugavpils University, Vienības iela 13, LV – 5401, Daugavpils, Latvia. anthicus@gmail.com text European Journal of Taxonomy 2022 2022-02-24 797 1 100 http://dx.doi.org/10.5852/ejt.2022.797.1667 journal article 20233 10.5852/ejt.2022.797.1667 e4b9a92e-23ef-4d55-85c9-ccabcbd8316e 2118-9773 6299487 8DF57743-9C53-4265-BCB5-743276A3A16C Macrotomoderus truncatulus sp. nov. urn:lsid:zoobank.org:act: 103D0B56-52BD-40E6-8373-8DBAF4775303 Figs 40–41 Differential diagnosis This species readily differs from all Palaearctic congeners in the truncate head base and obtusely angulate (not rounded) temporal angles. The modifications of anterior margin of the pronotum are similar to those as in M. lapidarius sp. nov. (see description above), but specifically different in the less prominent and obtusely angulate lateral denticles of the anterior pronotal impression (the denticles stronger raised in dorsal aspect, either acute in M. lapidarius sp. nov. ) and the less prominent anterior wall of the pronotal impression (the wall is higher in M. lapidarius sp. nov. ). See also diagnosis of M. similis sp. nov. above. Fig. 39. Macrotomoderus transitans sp. nov. , holotype, ♂ (NMP), aedeagus. A–B . General view, different positions. C . Gonopore armature, apical portion of apicale. D . Ditto, basale and basal portion of apicale. E . Ditto, different position. F . Median portion of basale. G . Apical portion. Not to scale. Etymology Named from the Latin ‘truncatulus’ (‘slightly truncate’) to point on truncate head base. Type material Holotype CHINA • ♂ ; “CHINA, Yunnan , Wuliangshan Mt. Range 2270 m , 12.vi.2011 Belousov , Kabak & Korolev leg. // 24°45′02″N 100°30′24″E ”; ZIN . Description MEASUREMENTS. Holotype , total body length 4.15 mm ; head 0.85 mm long, across eyes 0.8 mm broad, pronotum 1 mm long, maximum width 0.75 mm , minimum width 0.4 mm , elytra 2.3 mm long, 1.6 mm combined wide. Dorsum and venter uniformly pale brown. Mouthparts, antennae, palps and legs yellowish-brown. Head ovoid with moderately large, ovoid compound eyes, which are not or slightly protruding beyond head outline laterally. Tempora converging towards obtusely angulate temporal angles; head base truncate. Occiput somewhat declivous posterodorsally. Head dorsal punctures minute and inconspicuous. Head dorsal setae inconspicuous, sparse. Antennae extending towards base of pronotum. Antennomere three about 1.2× as long as antennomere two, antennomeres 8–10 transverse, of them 9–10 strongly transverse. Terminal antennomere shortly triangular with rounded apex, twice as long as penultimate antennomere. Terminal maxillary palpomere securiform. Pronotum shortly cylindrical with broad and medially shortly notched postmedian lateral constriction. Front margin of anterior lobe broadly rounded, in male shallowly and broadly impressed mesally opposite median part of head base; anterolateral margins of this impression are slightly raised in dorsal aspect, obtuse denticulate ( Fig. 40B–C ). Anterior edge of pronotum in front of anterior impression with gentle, low and short median wall that in male is provided with golden, long, in part curved, anteriad-pointing setae ( Fig. 40B–C ). Lateral angles of this wall on each side with a few long, apically curved, erect setae; both groups of lateral setae are meeting apically in a П-shaped arc over anterior wall ( Fig. 40B ). Pronotum dorsally without anterior rim. Anterior lobe slightly convex in lateral view ( Fig. 40C ). Lateral constriction slightly continues onto disc in lateral view, shallow ( Fig. 40C ). 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 obtuse (in lateral view), widely separated denticles (in lateral view). Cavity in lateral wall of pronotum between lateral denticles elliptical. In dorsal view, lateral pronotal fovea moderately broad, anterior and posterior pair of denticles appear obtusely angulate, poorly visible from above, dorsally each with a bunch of short setae ( Fig. 40B ). Pronotal punctures minute on disc; lateral constriction dorsally with dense, irregularly shaped and variably sized punctures, some of which are large. A track of short median longitudinal carina present on lateral constriction area in dorsal view. Dorsal pronotal setae rather long, appressed, at least in part obscuring surface of posterior pronotal lobe. Scutellar shield small, apically rounded. Elytra dorsally elongate elliptical, slightly convex in lateral view, widened laterally around midlength, shoulders obsolete (apterous species). Elytral punctures moderately large, rather dense, 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. 41 , large and robust, with delicate, moderately large needle-shaped and tube-enclosed gonopore armature. Constituting pieces attached closely to one another. Fig. 40. Macrotomoderus truncatulus 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. 41. Macrotomoderus truncatulus sp. nov. , holotype, ♂ (ZIN), aedeagus. A–B . General view, different positions. C . Gonopore armature, median portion of apicale. D . Ditto, basal portion of apicale and apical portion of basale. E . Median portion of apicale, different position. F . Apical portion. G . Ditto, different position. Not to scale. Sexual dimorphism Female is unknown. Ecology Collected at 2270 m elevation. Distribution Known only from Wuliang Mountains in central part of Yunnan Province , SW China .