Yamatentomon fujisanum Imadate 1964

Yamatentomon fujisanum Imadaté, 1964 Figs. 7, 8 Yamatentomon fujisanum Imadaté 1964: 278–280, figs. 123–129, 131–132; Imadaté 1973: fig. 4; Imadaté 1974b: 118–122, figs. 48–51; Rusek 1974: 270. Materials examined. One male (NSMT-Ap 34), Kinkazan, Gifu-shi, Gifu Prefecture, Honshu, Japan, elev. 250 m, 7-I-1965, G. Imadaté leg.; one male (Imadaté’s Proturan Collection 5061a in NSMT), Mt. Fuji, Yamanashi Prefecture, Honshu, Japan, Rhododendron brachycarpum and Vaccinium vitis-idaea, elev. 2,300 m, 30-VIII-1982, K. Sawada leg.; one female, Sengen-jinja, Subashiri, Oyama-machi, Shizuoka Prefecture, Honshu, Japan, Cryptomeria japonica, 35°21'44"N, 138°51'46"E, elev. 800 m, 7-V-1986, O. Nakamura leg. Diagnosis. Cephalic additional setae d6 absent; foretarsal sensillum b not reaching base of γ 4; tergite VII with six pairs of anterior setae, A4' present; posterior accessory setae on tergites II–VII sensilliform, their length less than one-eighth of P1. Supplementary notes on description. The type specimens were not included in the registry list of NSMT specimens and could not be found. Hence, the measurements were based on the aforementioned specimens. Head setae l3, sd4, sd5 all setiform, l3 length 11–13 μm, d4 and sd5 length 14–18 μm (Fig. 7A); additional setae d6 absent (Fig. 7A); setae d7 and sd7 subequal in length, 20–23 μm long; pores fp and cp present (Fig. 7A). Maxillary palpus with two sensilla, lengths 12–13 μm; dorsal sensillum slender (Fig. 7B), ventral sensillum broadened in middle part (Fig. 7C). Pronotal seta 1 length 36 μm, about 1.5 times longer than seta 2, 24 μm. Foretarsal setae β1 and δ4 long, setiform; β1 length 27–28 μm, about 1.5 times longer than δ1, and about half length of β2,52 μm; δ4 39–40 μm long, about twice the length of δ1; δ1–δ3 and δ5 short, setiform, length 18–22 μm (Fig. 7D); pores present near sensilla c and t3. Mesonotum with pores al and sl; metanotum with sl; prosternum without pores; mesosternum and metasternum with a group of three adjacent sc (Fig. 8A). Tergite I with pore spm; II–VI with spm and al (Figs. 8B, H); VII with spm, psl and al (Fig. 8C). Sternite I–II with single spm; III–IV with a pair of spsm (Fig. 8E); V with two adjacent spm (Fig. 8F); VI–VII with a pair of spsm and a group of three adjacent sam on connecting line (Figs. 8H, I). Abdominal segment XII with dorsal central pore and a pair of ventral anterolateral pores. Central part of ventral hind margin of XII with fine teeth. Male squama genitalis with 7+7 setae (Fig. 7E). Notes. Sternite I lacks a pore in a male specimen from Kinkazan; sternite V has a single spm and a pair of spsm (Fig. 8G), and sternite VI features two groups of two adjacent sam in a male specimen from Mt. Fuji. Group of pores sam on sternite VIII are located on the first anterior line in a female specimen from Sengen-jinja (Figs. 8I, J), while the group is found at the intersection of the anterior lines in males from Mt. Fuji and Kinkazan (Fig. 8K). This same variation has also been observed in Y. yamato. Distribution. Japan (center of Honshu).