Dinera grisescens ( Fallén, 1817 )

Zhang, Chun-Tian & Shima, Hiroshi, 2006, A systematic study of the genus Dinera Robineau-Desvoidy from the Palaearctic and Oriental regions (Diptera: Tachinidae), Zootaxa 1243 (1243), pp. 1-60 : 29-30

Dinera grisescens ( Fallén, 1817)

Figs. 26–29

Musca grisescens Fallén, 1817: 243 .

Dinera grisescens : — Stein 1924: 239 (notes). — Townsend 1936: 139 (key). — Townsend 1938: 326 (redescription). — Emden 1954: 29 (key). — Herting 1960: 128 (biology). — Sabrosky & Arnaud 1965: 986 (Catalog). — Herting 1968: 56 (notes). — Zimin et al. [1969] 1988: 1273 (key). — Richter & Farinets 1979: 114 (first instar larva). — Richter & Farinets 1983: 831 (first instar larva). — Herting 1984: 141 (Catalog). — Tschorsnig 1985: 100 (male postabdomen). — Herting & Dely­Draskovits 1993: 362 (Catalog). — Thompson & Pont 1994: 81 (type information). — Tschorsnig & Herting 1994: 80 (key), 156 (ecology). — Richter & Wood 1995: 46 (distribution). — Chao 1996: 2156 (notes). — O’Hara & Wood 2004: 25 (Catalog). — Richter 2004: 354 (key).

Dinera punctata Robineau­Desvoidy, 1830: 308 .

Dinera pygmaea Robineau­Desvoidy, 1830: 309 .

Tachina denotans Walker, 1853: 77 .

Dinera rufifrons Rondani, 1862: 67 .

Dinera zetterstedti Robineau­Desvoidy, 1863: 353 .

Dinera arida Robineau­Desvoidy, 1863: 355 .

Dinera futilis West, 1924: 191 .

Diagnosis

Small slender­bodied grayish fly; body evenly and densely covered with grayish pruinosity; 2+3 dc; tegula and basicosta yellow, costal spine strong; cell r 4+5 closed at wing margin; legs reddish yellow; syntergite 1+2 excavated only at base, without median marginal seta. In dorsal view, cerci distinctly narrowed on apical 3/5, surstylus foot­like, blunt apically and slightly concave at middle; in lateral view cerci bent ventrally at apex, surstylus bluntly rounded, basiphallus slightly longer than postgonite, distiphallus with membranous apical part about 1.4 times as long as sclerotized basal part, with minute spinules at membranous basal part ventrally.

Material examined

CHINA. Beijing: 1 male, Yongdingmen , 24.v.1932 , C. Ho. Xinjiang Autonomous Region: Wukuerqi, 1120–1620 m, Zaosu Prefecture , 7.viii.1957 , 1 male, 1 female, G. Wang , 1 male, C. Hong. Inner Mongolia Autonomous Region : 2 males, Tumuertai, 25.vii and 16.viii.1971, 1 male, 1 female, Tumuertai, vegetable field, 27–31.viii.1971; 1 male, Anti­Epidemic Diseases Station of Xilingele Prefecture , 16.vi.1971 ( IZCAS) . Hebei: 1 male, West Yangdao, Fuping , 1.v.1981 . Shanxi: 1 female, South Yulin, Shuoxian , 20.ix.1974 , M.­f. Wang ( SNUC) .

Distribution

China (Hebei, Inner Mongolia, Shanxi, Xinjiang), Mongolia; Europe, Russia, Canada, Unites States.

Hosts

Coleoptera , Carabidae : Harpalus sp. in the Palaearctic Region ( Emden 1954: 29; Herting 1960: 128; Mesnil 1980: 4; Tschorsnig & Herting 1994: 156). Scarabaeidae : possibly Phyllophaga in North America ( Arnaud 1978: 179).

Remarks

This is the only species of Dinera with a Holarctic distribution; it occurs in northern China, Mongolia and Far East Russia in Asia, but not in Japan. It is easily distinguished from other species of this genus by its slender grayish body, reddish yellow legs, and strong costal spine.