Zeugophora hozumii Chujo 1953
Creators: name: Takemoto, Takuya
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Megalopodidae
Zeugophora
Zeugophora hozumii

description: Zeugophora hozumii Chûjô, 1953
[Japanese name: Aoguro-momobuto-hamushi]
(Figs 17 A–C; 18–21)
Zeugophora hozumii Chûjô, 1953: 1 [type locality: Mt. Ôtaki-san in Nagano pref. Honshû, Japan.]; Jolivet, 1957: 10 [listed]; Chûjô & Kimoto, 1961: 120 [Japan]; Takizawa, 2006: 3 [listed]; Rodríguez-Mirón, 2018: 292 [listed].
Zeugophora (Zeugophora) hozumii: Kimoto, 1964: 108 [Japan: Hokkaido, Honshu]; Kimoto &Takizawa, 1994: 99, 267 [Hokkaido, Honshu]; Silfverberg, 2010: 334 [listed]; Silfverberg, 2010: 335 [listed].
Description. Measurement. Body length: PEL, male, 2.64–3.07 mm, female, 2.83–3.22 mm. Width: EW, male, 1.18–1.42 mm, female, 1.25–1.51 mm. Biometric data are given in Table 4.
Coloration. Surface shiny. Head dark green except mouthparts which are testaceous. Apex of mandible black. Antennae brown except basal one-third which is testaceous. Pronotum dark green. Scutellum dark green. Elytra greenish blue or deep blue. Ventral surface of head and prosternum dark green, thorax and abdomen black. Leg testaceous except black hind coxae, mid femora darkened and hind femora brown.
Habitus. Body oblong.
Head (Fig. 19A), covered with sparse setiferous punctures; setae produced from inside punctures (Fig. 20A); frontoclypeal suture bisinuate, middle portion narrow, about one fourth width of clypeus; labrum and clypeus convex and furnished with setae; length of clypeus longer than that of labrum. Anterior margin of clypeus weakly lined (Fig. 18A). Canthus small, obtusely triangular with apex rounded, furnished with a few setiferous punctures. Apex of mandible bifurcate and furnished with one large tooth apically on inner margin; lateral angles furnished with setae (Fig. 18D). Antennae weakly clavate; segments short, except for first, third and fourth which are long and slender, eleventh pointed; all segments setous, fifth through eleventh with smaller, denser setae (Fig. 18C).
Pronotum (Fig. 18A, 19B) with blunt lateral tubercles, strongly tapered towards base; lateral basal angles weakly swollen; surface regularly convex, densely covered with coarse setiferous punctures (Fig. 19B); distance between punctures 0.5–2 times their own diameter, sparser on posterior half of longitudinal median portion and posterior half of lateral portions. Setae produced from inside punctures (Fig. 19B).
Elytra long, leaving apex of pygidium exposed, moderately vaulted in lateral view; lateral sides subparallel; surface with reticulate coriaceous microsculpture, irregularly covered with dense setiferous punctures, punctures coarsely separated by 0.5–3 times their diameter; setae produced anterior to punctures, the posterior two-thirds of each puncture deep (Fig. 20D); lateral grooves complete from elytral base to apex; sutural grooves ambiguous on elytral base; basal areas of elytra weakly convex on either side of suture; humerus protruding anteriorly; epipleuron narrow. Scutellum trapezoidal, with setae.Disc of mesoventrite rugose; process short, furnished with setiferous punctures (Fig. 18B, 19C). Mesepisternum furnished with setiferous punctures, except near suture separating it from mesepimeron (Fig. 18B, 19C). Surface of metaventrite with reticulate coriaceous microsculpture (Fig. 20C), central area sparsely covered with setiferous punctures, becoming denser on lateral portions, setae produced anterior to shallow punctures (Fig. 20C); posterior margin of mid coxal insertion markedly punctate. Surface of sternites sparsely covered with setiferous punctures. In male, posterior margin of 7th sternite evenly curved (Fig. 19D). In female, apex of pygidium weakly concave; posterior margin of 7th sternite straight, but bisinuate on central portion (Fig. 18E).
Legs furnished with setae; tibial setae becoming longer and denser apically. Hind femora thickened. Tibiae straight; mid and hind tibiae with sharply defined and finely crenulate carina along external face. Apex of tibia with two spurs. Tarsi distinctly shorter than tibiae, and basal three segments gradually widened apically.
Male genitalia as shown in Fig. 21 A–F: 8th sternite furnished with setae, short, oblique anteriorly, membrane and sclerotized portion narrow ventrally, allowing for downward extension (Fig. 21E, F); apex of spiculum three branched, central branch furnished with tiny setae (Fig. 21D); median struts of median lobe approximately 1.5 times as long as median lobe (Fig. 21A); apex of median lobe pointed (Fig. 21B), lateral side flattened (Fig. 21A); paramere well developed (Fig. 21C).
Spermatheca as shown in Fig. 21G.
Host plant. Salix caprea L. [Japanese name: Bakko-yanagi].
Remarks. Zeugophora hozumii is easily distinguished from the other Japanese species by the above-mentioned body coloration.
Types. Not studied.
Specimens examined. Japan. [Hokkaido] Kamikawa Dist.: 2 exs., Kamikawa, Sôunkyô, 23. VI.2018, S. Urabe leg. (TTPC), 1 ex., same data but different date and collector, 26. VI.2018, T. Takemoto leg. (TTPC). Tokachi Dist.: 1 ex., Katô, Tokachi-mitsumata, 21.VII.2018, S. Urabe leg. (TTPC). Okhotsk Dist.: 18 exs., Engaru, Riv. Yûbetsugawa, 25.VII.2003, S. Ômomo leg. (HTPC); 1 ex., same data (MMPC); 2 exs., same data (HSPC); 11 exs., same data (SEHU). [Honshu] Tochigi Pref.: 1 ex., Nikkô, Yumoto, 14. VI.2014, S. Maehara leg. (TTPC). Yamanashi Pref.: 4 exs., Mt. Senzyô-gatake, 9–11.VII.1971, H. Takizawa leg. (HTPC); 4 exs., same data (SEHU). Gifu Pref.: 1 ex. Takayama, Okuhidaonsenkyô, Kamisaka, 2.VIII.2015, M. Yoshimura leg. (MYPC).
Distribution. Japan: Hokkaido, Honshu; Russia.
description: Published as part of Takemoto, Takuya, 2019, Revision of the genus Zeugophora (Coleoptera, Megalopodidae, Zeugophorinae) in Japan, pp. 1-62 in Zootaxa 4644 (1) on pages 25-28, DOI: 10.11646/zootaxa.4644.1.1, http://zenodo.org/record/3345349