Panzeria atriventris, Shima, 2020

Shima, Hiroshi, 2020, The genus Panzeria Robineau-Desvoidy (Diptera: Tachinidae) from Japan, Zootaxa 4816 (4), pp. 541-575 : 547-549

Panzeria atriventris sp. nov.

( Figs 7–10 , 39–40 , 69–70 )

Fausta mimetes (Zimin) : Mesnil (1972a: 1048; Palearctic tachinids) (nec Zimin 1960); O’Hara et al. (2009: 141; Chinese catalog, part) (nec Zimin 1960).

Panzeria mimetes (Zimin) : Shima & Hara (2016: 28; Saitama tachinids, misidentification) (nec Zimin 1960).

Diagnosis. This species appears to resemble P. mimetes ( Zimin, 1960) , but differs from it in the short proboscis, wider frons [about 5/14 of single eye width, instead 1/ 4 in mimetes ( Zimin 1960: 740) ], and the abdomen with thin grayish pruinosity throughout. Large black species, scutellum and abdomen black in ground color, with thin grayish white pruinosity; apical scutellar setae absent; three postsutural dorsocentral setae; one presutural seta; abdominal syntergite 1+2 without median marginal setae.

Description. Body length. 10.4–12.5 mm.

Male. Head with grayish white pruinosity, reflecting silvery white under certain directions of light, fronto-orbital plate darkened, occiput grayish; antenna black, apical portion of pedicel narrowly reddish; palpus dark brown, sometimes pale brown apically or nearly reddish yellow. Frons at narrowest point 0.14–0.16 of head width; face 0.50–0.60 times as long as frons in profile; parafacial bare, wide, about 1.5 times as wide as postpedicel in its horizontal position; gena about 1/2, or slightly more, of eye height in horizontal position. Antenna falling short of lower margin of face by about 2/3 length of pedicel; postpedicel almost as long as pedicel; arista subequal in length to pedicel and postpedicel combined, 2nd aristomere as wide as long, 3rd aristomere thickened on basal 2/5. Proboscis short; prementum at most 4 times as long as wide; palpus slightly longer than pedicel and postpedicel combined.

Thorax black in ground color, with thin whitish-gray pruinosity, much denser on anterior portion of presutural area of scutum and postpronotal lobe; 2 narrow median and a pair of broad outer longitudinal vittae visible on presutural area of scutum, sometimes inner vittae fused together and forming broad median vitta. One presutural and 2 postsutural acrostichal setae; 3 postsutural dorsocentral setae; 4–5 supra-alar setae, 2nd and 4th setae shorter than others; 3 katepisternal setae; anepimeral seta almost reaching posterior margin of lower calypter; anatergite bare; scutellum with 4 pairs of long marginal setae, apical setae absent, and 3–4 shorter discal setae; distance between bases of subapical scutellar setae about 1/3 of that between basal and subapical setae. Wing hyaline, rather weakly tinged with pale brown on basal and anterior portions, distinctly tinged with brown along r-m crossvein; lower calypter pale yellowish white; ratio of 2nd, 3rd and 4th costal sectors approximately 3:6:2.5; length of vein M from dm-cu crossvein to bend slightly more than distance between bend and wing margin. Legs black; pulvilli yellowish brown; fore tibia with 2–3 posterior setae; mid tibia with a row of 5–6 anterodorsal, 4–5 posterodorsal and 2 ventral setae; hind tibia with a row of 6–7 anterodorsal, 4 posterodorsal and 4 ventral setae.

Abdomen black, with thin grayish-white pruinosity throughout, the pruinosity slightly denser on anterior portion of 2nd to 5th tergites but not forming distinct bands. Hairs on dorsum dense, long and erect; syntergite 1+2 without median marginal setae, with 1–2 lateral marginal setae; 3rd tergite with 2–3 pairs of strong median discal, 2–3 lateral discal, 2–4 median marginal and 2–3 lateral marginal setae, median discal setae rather irregularly set; 4th tergite with 1–2 pairs of strong median discal and a row of marginal setae, discal setae rather irregularly set; 5th tergite with an irregularly-set row of strong discal setae and a row of weak, hair-like marginal setae; 2nd to 4th sternites exposed, with several strong setae on each posterior portion.

Terminalia: 6th tergite with thin grayish pruinosity, a row of rather strong setae on posterior margin, about 1/3 as long as shining black syntergosternite 7+8, free from the latter; epandrium with very thin grayish pruinosity; cerci in dorsal view weakly narrowed from base to basal 1/2, slightly constricted near middle, then very slightly widened or nearly parallel-sided to apex, rather well ridged on both sides from basal 1/7 to 1/2, in lateral view apical portion weakly curved ventrally; surstylus well ridged on dorsal margin slightly basad to the middle, well narrowed to rounded apex, with 3–5 spines on apex; postgonite well widened apically with strong constriction at apical margin.

Female. Differs from male as follows: frons 0.28–0.3 of head width; frontal vitta about as wide as frontoorbital plate at middle; outer vertical seta developed, almost 4/5 as long as inner vertical seta; 1 rather fine outwardly directed prevertical seta; 1 outwardly directed and 1 proclinate orbital seta; palpus reddish slightly longer than pedicel and postpedicel combined; antenna with scape, pedicel and narrow basal portion of postpedicel reddish brown; claws and pulvilli shorter than 5th tarsomere; abdominal hairs fine and rather recumbent; 3rd abdominal tergite with 2 pairs of median discal setae; 4th tergite with 1 or 2 pairs of median discal setae. Terminalia: 6th tergite small, narrowly separated mid-dorsally, with a row of rather strong setae on posterior margin; 6th sternite rather long, about 1.5 times as long as 6th tergite; 6th spiracle on anteroventral margin of 6th tergite, 7th spiracle on membrane just behind posteromedian margin of 6th tergite; 7th tergite entire, slightly longer than 6th tergite, with a row of rather fine setae on posterior margin; 7th sternite weakly convex on posteromedian portion and narrowly and weakly concave on posterior margin, with rather dense short hairs on convex area; 8th tergite formed of small irregular quadrate hemitergites, without hairs; 8th sternite reduced to a quadrate-shapoe sclerite, with rather dense short hairs; epiproct absent.

Type material. Holotype male: Japan / Mt. Zao , Miyagi [Pref.] / 25.vi.1970 / K. Hara / Kamoshika Spa ( BLKU).

Paratypes (all KUM): Japan, Hokkaido : 1 female, Mt. Rausu , 200–900 m, 9.viii.1967, T. Saigusa ; 1 female, Mts. Daisetsu, Aizankei , 7.viii.1967, A. Nakanishi. Honshu : 2 males, Aomori Pref., Mt. Bonju , 29.vi.1985, S. Fukushi ; 1 male, Aomori Pref., Hirosaki City, Mt. Iwaki, Ubaishi — Yakedomari, 4.vi.1970, S. Fukushi ; 2 females, Iwate Pref., Hachimantai, Matsukawa , 900–1100 m, 24.vii.2001, H. Shima ; 29 males, sama date and locality as holotype, K. Hara & T. Nambu ; 3 males, Gunma Pref., Mt. Tanigawa , 13–14.vii.1971, S. Shinonaga ; 2 males, Saitama Pref., Mt. Jomine, Kamiizumi , 11.vi.1994, K. Hara ; 1 male, Saitama Pref., Mt. Kumotori , 24.vii.1974, K. Hara ; 4 females, Nagano Pref., Karuizawa, Kutsukake , 9–11.vii.1966, Y. Miyatake, M. Honda & H. Shima ; 1 female, Nagano Pref., Iida City, Futagoyama , 1840–2242 m, 28.vii.2013, H. Shima. South Korea : 2 females, Samgak-Koji, Macheon- Myeon , 1000–1300 m, 14.vii.1991, T. Saigusa ; 1 female, Gyongsangbug-Do, Mt. Sudo-san (6–900 m), 9.vi.1977, K. Yamagishi .

Etymology. This species is named after its dark body color, and combines the Latin adjective ater, black, with the Latin noun venter, belly.

Distribution. Japan (Hokkaido, Honshu); South Korea.

Remarks. Panzeria mimetes was described by Zimin (as Fausta ) from the Abakan area, South Siberia, Russia. Zimin (1960: 740) mentioned that this species has a narrow and long proboscis, about seven times as long as wide. Richter (2004: 298) also referred to this structure in the key to the Far East Russian species as a discriminating character from the other three species. None of the Japanese specimens examined could be assigned to this species based on this character, although Mesnil (1972a: 1048) recorded the species from Yamagata, Japan. Chao et al. (1998: 2068) recorded P. mimetes from Tibet, China, and Japan, Richter (2004: 298) listed Japan as a locality of distribution, and Zhang et al. (2016: 580) recorded it from Japan along with Liaoning and Xizang (Tibet), China. I think these records of P. mimetes from Japan probably refer to P. atriventris sp. nov.

Figures

FIGURES 7–14. Male terminalia of Panzeria spp. 7–10. Panzeria atriventris sp. nov. (paratype, Mt. Zao, Honshu, Japan, KUM). 11–14. Panzeria inusta (Mesnil) (Aizankei, Hokkaido, Japan, KUM).7, 11. Male 5th abdominal sternite in ventral view (hairs omitted). 8, 12. Epandrium, cerci and surstylus in lateral view (hairs omitted). 9, 13. Same in dorsal view (hairs omitted). 10, 14. Hypandrium, pregonite, postgonite and phallus in lateral view. Scale bars: 0.3 mm for 7, 0.1 mm for 8–10 and 12–14, and 0.2 mm for 11.

FIGURES 39–44. Female terminalia of Panzeria spp. 39–40. Panzeria atriventris sp. nov. (Mt Rausu, Hokkaido, Japan, KUM). 41–42. Panzeria meridionalis sp. nov. (Mt. Takachiho, Kyushu, Japan, KUM). 43–44. Panzeria rufitibialis sp. nov. (Saitama, Honshu, Japan, KUM). 39, 41, 43. Lateral view. 40, 42, 44. Ventral view, hairs omitted. Scale bars: 0.1 mm.

FIGURES 69–84. Panzeria spp. 69–70. Panzeria atriventris sp. nov. (Mt Zao, Honshu, Japan, KUM). 71–72. Panzeria bisetosa sp. nov. (Fukuoka, Kyushu, Japan, KUM). 73–75. Panzeria emdeni (Mesnil) (Nagano, Japan, KUM). 76–77. Panzeria japonica sp. nov. (Tokyo, Honshu, Japan, KUM). 78–79. Panzeria meridionalis sp. nov. (Kagoshima, Kyushu, Japan, KUM). 80–81. Panzeria rufitibialis sp. nov. (Iriki Pass, Kyushu, Japan, KUM). 82–84. Panzeria tuberculata (Zimin) (Nagano, Japan, KUM). 69, 71, 73, 77, 79–80, 82. Dorsal habitus. 70, 72, 76, 78, 81. Lateral habitus. 74, 84. Male head in dorsal view. 75, 83. Male thoracic pleura (anterior part) in lateral view.