Dexia flavipes Coquillett, 1898

Zhang, Chun-Tian, Shima, Hiroshi & Chen, Xiao-Lin, 2010, A review of the genus Dexia Meigen in the Palearctic and Oriental Regions (Diptera: Tachinidae) 2705, Zootaxa 2705, pp. 1-81 : 34-35

publication ID

1175­5334

persistent identifier

https://treatment.plazi.org/id/03F05F0B-4B06-FF87-5CC5-0DEFAC25FE2C

treatment provided by

Felipe

scientific name

Dexia flavipes Coquillett, 1898
status

 

Dexia flavipes Coquillett, 1898 View in CoL

Figs. 37−40

Dexia flavipes Coquillett, 1898: 332 View in CoL . — Mesnil 1980: 43 (redescription). — Herting 1984: 143 (list). — Shima 1989: 869 (list). — Herting & Dely-Draskovits 1993: 366 (catalog). — Richter 2004: 355 (key).

Eomyocera carinata of Baranov, 1952: 119, not Townsend, 1926, misidentification. — Herting 1984: 143 (as syn. of flavipes View in CoL ).

Diagnosis. Palpus subequal in length to 1st flagellomereor; prementum 2−2.5 times as long as wide; 3 presutural and 3 postsutural dorsocentral setae; 2 katepisternal setae; legs reddish yellow; abdominal tergite 3 lacking black hind band.

Description. Body length. 9.8−12.0 mm.

Mesnil (1980) redescribed this species in detail. Here we give measurements and some additional characters.

Male. Head. Frons 0.14−0.16 times as wide as head width, parafacial 1.5−2.0 times as wide as 1st flagellomere; gena 0.42−0.43 times as wide as eye height. Inner vertical seta about 1/3 as long as eye height; ocellar seta about 1/2 eye height; fronto-orbital plate with only several fine short hairs among frontal setae. Antenna with1st flagellomere 2.5−3.5 times as long as pedicel; total width of arista including plumosity about 3 times as wide as 1st flagellomere. Prementum 2.0−2.5 times as long as wide; palpus slightly shorter than 1st flagellomere. Thorax black in ground color, postpronotal lobe and apex of scutellum reddish, with yellowish white pruinosity; scutum with 2 pairs of longitudinal black vittae, an inner vitta about 1/4 as wide as pruinose portion between inner and outer vittae; brownish gray pruinosity on basal 3/4 of scutellum. Prosternum usually bare, sometimes with 2−3 hairs on both sides; proepisternum bare. Wing Costal spine about as long as crossvein r-m; relative lengths of 2nd, 3rd and 4th costal sectors approximately 4.5:10:5.5; vein M from dmcu crossvein to its bend about 3 times distance between the bend and wing margin. Lower calypter with long fringe on outer margin. Legs reddish yellow. Mid tibia with 2 posterodorsal setae, hind tibia with 2−4 anterodorsal, 2 posterodorsal and 2−3 ventral setae. Abdomen. Hairs rather dense, fine and short; syntergite 1+2 with 5−6 lateral discal and 1−2 lateral marginal setae, without median marginal setae; tergite 3 lacking black posterior band, with 1−2 pairs of median discal, 1 pair of median marginal, and 2 lateral marginal setae, without lateral discal setae; tergite 4 with 1−2 pairs of median discal and a row of marginal setae; tergite 5 with an irregular row of discal setae. Male terminalia. Cerci slender on apical 1/2; surstylus narrow and slightly pointed apically; pregonite short; postgonite about as long as basiphallus; distiphallus long.

Female. Frons about 0.37 times as wide as head width; fronto-orbital plate 2.5−3.0 times as wide as frontal vitta; gena about 1/2 eye height. Inner vertical seta as strong as frontal setae; 5 frontal setae; 2 proclinate and 1 upwardly directed prevertical setae. Thorax with gray pruinosity; postpronotal lobe, postalar callus and distal scutellum yellow in ground color. Mid tibia with 1 posterodorsal seta; hind tibia with 2 anterodorsal, 1 posterodorsal, and 2 ventral setae. Abdomen ovate, black in ground color, with yellowish gray pruinosity on anterior 1/2−2/3 of tergites 3 to 5, without discal seta.

Type material examined. Holotype male of Dexia flavipes Coquillett , JAPAN, Gifu, 25.x.1890 ( USNM).

Additional material examined. CHINA. Hebei: 1 male, 2 females, Yangjiaping, 800 m, Xiaowutai Shan , 27.vi.2009, C. Fu and Y.-Y. Zhou. 4 males, 1 female, Haojiagou, 800 m, Xiaowutai Shan, 29.vi.2009, C. Fu and Y.-Y. Zhou ( SNU) . JAPAN. Hokkaido: 2 males, Toyotomi –cho, 30.vii−3.viii.1996, M. Sueyoshi & T. Tachi. Honshu: 1 male, Karuizawa, Nagahinata , Nagano, 12.vii.1962, H. Shima. 1 male, Azukisawa, Hokuryu town, 15.vi.1973, H. Kurahashi. 1 male, Mt. Iozen , Kaga , Ishikawa. 1 female, Tateoka, Kizukuri, Amori , 9.viii.1980, Sho Fukushi. 1 male, Karasawa Pass, Chino , Nagano, 31.viii.1996, M. Sueyoshi. 1 male, Ogawa, Okuwa vil ., Nagano, 2.vii.1996, T. Tachi. 1 male, Kamikuisiki vil., light , Yamanashi, 3.viii.1995, T. Tachi. 1 male, Mt. Kongou , Kinki , Osaka, 25.vii.1995, T. Tachi. 1 male, Hanase Pass, Kyauto city , Kyoto, 14.vii.1997, M. Sueyoshi. 1 female, Ichinose, Mt. Hakusan , Ishikawa, 14.x.1997, T. Nakamura. 1 female, Mt. Kakezu , Geihoku-t , Hiroshima, 17.vii.1998, T. Tachi. Shikoku: 1 male, Yura, Kumakogen, Kamiukena , Ehime Pref., 20.ix.1907, Malaise trap, E. Yamamoto. Kyushu: 2 females, Yutsubo and Shonai, Asono , Oita, 5.x.1996, R. Matsumoto. 3 males, 2 females, Shonai, Asono , Oita, 23.viii.1985, 21.vi.1995, 18.vii.1995 (all in BLKU) . Hokkaido: 1 male, Obihiro, Kushiro , 13.vii.1951, S. Takano ( CNC) .

Distribution. China * (Hebei), Japan (Hokkaido, Honshu, Shikoku, Kyushu).

Remarks. Eomyocera carinata Townsend was misidentified as a junior synonym of Dexia flavipes by Herting (1984: 143), following Baranov (1952: 119). Dexia flavipes is similar to D. gilva , but differs from it in having narrow frontal vitta, narrow pruinose portion between inner and outer vittae on scutum, and abdominal tergite 3 lacking black posterior band. We recognize this species as newly recorded from Hebei, China.

USNM

Smithsonian Institution, National Museum of Natural History

SNU

Seoul National University

CNC

Canadian National Collection of Insects, Arachnids, and Nematodes

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Tachinidae

Genus

Dexia

Loc

Dexia flavipes Coquillett, 1898

Zhang, Chun-Tian, Shima, Hiroshi & Chen, Xiao-Lin 2010
2010
Loc

Eomyocera carinata

Herting, B. 1984: 143
Baranov, N. 1952: 119
1952
Loc

Dexia flavipes

Richter, V. A. 2004: 355
Herting, B. & Dely-Draskovits, A. 1993: 366
Shima, H. 1989: 869
Herting, B. 1984: 143
Mesnil, L. P. 1980: 43
Coquillett, D. W. 1898: 332
1898
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