Zeugophora japonica Chûjô, 1951

Takemoto, Takuya, 2019, Revision of the genus Zeugophora (Coleoptera, Megalopodidae, Zeugophorinae) in Japan, Zootaxa 4644 (1), pp. 1-62 : 30-35

publication ID	https://doi.org/ 10.11646/zootaxa.4644.1.1
publication LSID	lsid:zoobank.org:pub:02543A03-07E4-4F82-9372-CE85EBC99ABF
persistent identifier	https://treatment.plazi.org/id/03C38C25-4056-FD1D-FF3B-FAA4FDA1A5D0
treatment provided by	Plazi
scientific name	Zeugophora japonica Chûjô, 1951
status

Treatment

[Japanese name: Munaki-momobuto-hamushi]

( Figs 17D, E, F View FIGURE 17 ; 22–25 View FIGURE 22 View FIGURE 23 View FIGURE 24 View FIGURE 25 )

Zeugophora japonica Chûjô, 1951: 119–120 [type locality: Sapporo, Hokkaido, Japan.]; Jolivet, 1957: 10 [listed]; Chûjô & Kimoto, 1961: 120 [ Japan]; Takizawa, 2006: 3 [listed]. Zeugophora japanica View in CoL (sic!): Rodríguez-Mirón, 2018: 293 [listed]. Zeugophora (Zeugophora) japonica: Kimoto, 1964: 107–108 [ Japan: Hokkaido]; Kimoto &Takizawa, 1994: 98, 267 [ Japan:

Hokkaido]; Silfverberg, 2010: 335 [listed].

Description. Measurement. Holotype ♀ Body length: PL, 0.98 mm; EL, 2.78 mm; PEL, 3.56 mm. Width: HW, 1.02 mm, PW, 1.29 mm, PPW, 1.02 mm, EW, 1.84 mm.

Body length: PEL, male, 3.43–3.94 mm, female, 3.62–4.03 mm. Width: EW, male, 1.39–1.78 mm, female, 1.63–1.85 mm. Biometric data are given in Table 5.

Coloration. Surface shiny. Body yellowish brown. Head yellowish brown, without navy blue sheen on dorsal surface. Apex of mandible black. Antennae brown, with segments 1-4 fulvous, though third and fourth sometimes darkened. Pronotum yellowish brown. Scutellum completely navy blue or with basal area yellowish brown. Elytra navy blue, sometimes dark green, except latero-apical area of humerus. Ventral surface of head, prosternum, and mesoventrite fulvous, metaventrite and abdomen black. Legs yellowish brown except black hind coxae.

Habitus. Body oblong.

Head ( Fig. 23A View FIGURE 23 ) covered with sparse setiferous punctures; setae produced from inside punctures ( Fig. 24A View FIGURE 24 ); frontoclypeal suture bisinuate, middle portion narrow, about one third width of clypeus; labrum and clypeus convex and furnished with setae; length of clypeus longer than that of labrum. Anterior margin of clypeus markedly lined ( Fig. 23A View FIGURE 23 ). Canthus small, obtusely triangular with apex rounded and 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. 22D View FIGURE 22 ). Antennae weakly clavate; segments short, except for first, third and fourth which are long and slender, eleventh segment pointed; all segments setous, fifth through eleventh with shorter, denser setae ( Fig. 22C View FIGURE 22 ).

Pronotum ( Fig. 22A View FIGURE 22 , 23B View FIGURE 23 ) with blunt lateral tubercles, strongly tapered towards base; lateral basal angles weakly swollen; surface regularly convex, sparsely covered with coarse setiferous punctures except longitudinal median portion ( Fig. 22A View FIGURE 22 , 23B View FIGURE 23 ); distance between punctures various, 2–6 times their own diameter, denser on anterior lateral portions. Setae produced from inside punctures ( Fig. 24B View FIGURE 24 ).

Elytra long, leaving apex of pygidium exposed, moderately vaulted in lateral view; lateral sides subparallel; densely covered with irregular and setiferous punctures, punctures coarsely separated by 2–3 times their diameter; setae produced from anterior inner margin of puncture, posterior two-thirds of puncture deep ( Fig. 24D View FIGURE 24 ); lateral and sutural grooves complete from elytral base to apex; 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. 22B View FIGURE 22 , 23C View FIGURE 23 ). Mesepisternum furnished with setiferous punctures, except near suture separating it from mesepimeron ( Fig. 22B View FIGURE 22 , 23C View FIGURE 23 ). Surface of metaventrite ( Fig. 24C View FIGURE 24 ) with central area sparsely and lateral area densely covered with setiferous punctures, setae produced anterior to shallow punctures ( Fig. 24C View FIGURE 24 ); 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. 23D View FIGURE 23 ). In female, posterior margin of 7th sternite straight, but bisinuate on central portion ( Fig. 23E View FIGURE 23 ).

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 protibia with one spur; apices of meso- and metatibiae with two spurs. Tarsus distinctly shorter than tibia, and basal three segments gradually widened apically.

Male genitalia as shown in Fig. 25 View FIGURE 25 A–F: 8th sternite furnished with setiferous punctures, short, oblique anteriorly, membrane and sclerotized portion narrow ventrally, allowing for downward extension ( Fig. 25E, F View FIGURE 25 ); apex of spiculum three branched, central branch furnished with tiny setae ( Fig. 25D View FIGURE 25 ); median struts of median lobe approximately 1.2 times as long as median lobe ( Fig. 25A View FIGURE 25 ); apex of median lobe pointed and curved upward ( Fig. 25B View FIGURE 25 ), lateral side flattened ( Fig. 25A View FIGURE 25 ); paramere well developed ( Fig. 25C View FIGURE 25 ).

Spermatheca as shown in Fig. 25G View FIGURE 25 .

Host plant. Populus suaveolens Fisch [Japanese name: Doronoki] ( Takizawa, 2006).

Remarks. Zeugophora japonica is easily distinguished from other Japanese species by the above-mentioned body coloration and genitalia shape.

Types. Holotype ( ELKU) ♀: "Sapporo, Date 12.VII.1936, Coll. Y. Nishijima ", " Holotype ", " Zeugophora ja- ponica Chûjô, Det. M. Chûjô, 1949".

Specimens examined. Japan. [Hokkaido] Sorachi Dist.: 1 ex., Ashibetsu, Ashibetsu river , 2. VI.2019, T. Takemoto leg., ( TTPC) . Okhotsk Dist.: 2 exs., Kitami , 28.V.1991, T. Katô leg. ( HTPC) . Ishikari Dist.: 2 exs., Sapporo, Misumai , Sirakawa , 27.V.2006, H. Takizawa leg. ( HTPC) ; 1 ex., Sapporo, Shirakawa , 18.V.2012, H. Suenaga leg. ( MMPC) ; 7 exs., Sapporo, Makomanai Park , 17.V.2017, T. Takemoto leg. ( TTPC) , 18 exs., same data but different date, 22.V.2018, T. Takemoto leg. ( TTPC) .

Distribution. Japan: Hokkaido.