Dolichocolon orientale, TOWNSEND, 1927

Cerretti, Pierfilippo & Shima, Hiroshi, 2011, World revision of Dolichocolon Brauer & Bergenstamm (Diptera: Tachinidae: Exoristinae: Goniini), Zoological Journal of the Linnean Society 162 (3), pp. 544-584 : 564-565

DOLICHOCOLON ORIENTALE TOWNSEND, 1927

( FIG. 13A–G )

orientale Townsend, 1927: 73 (Dolichocolon) . Type locality: Indonesia, Sumatra, Anai Kloof .

klapperichi Mesnil, 1967: 43 (Dolichocolon) . Type locality: China, Fujian, Kwangtseh. syn. nov.

Type material: Holotype of D. orientale ♂: Holotype // Anei Kloof/(Sumatra’s West/ Kust) 500 M. 1925/Leg. E. Jacobson.// Dolichocolon / orientale TT / Eodolichocolon ♂ /Det CHTT //Type// Dolichocolon / orientale / Townsend 1927 / ZMAN type DIPT. 2188.1 [ ZMAN].

Notes: Specimen in very bad condition: head collapsed and most of the legs missing or greatly damaged; moreover, the body is mainly covered with hyphae.

Holotype of D. klapperichi ♂: [ China] Kwangtseh– Fukien/J. Klapperich 0/9.10 1937// Dolichocolon klapperichi Mesn /L.P. Mesnil det., 1967//Type// Holotype ♂ /of Dolichocolon / klapperichi /Mesnil/Examined 1970/ R.W. Crosskey [ CNC] [specimen in good condition].

Other material examined: China: 1 ♂, Yunnan, Simao, Dazhai , 31.vii.1990, leg. S. Lin [written in Chinese] [ BLKU] . Indonesia: 1 ♂, Sumatra, Berastagi [3°11′N 98°30′E], 1400 m, 21.–22.xi.1973, leg. R . Kano et al. [labelled as Dolichocolon klapperichi ] [ BLKU] . Japan: 1 ♂, Honshu, Karuizawa, Kutsukake [39°14′N 141°38′E], 11.vii.1966, H. Shima [ BLKU] . Papua New Guinea: 1 ♂, Morobe District, Wau [7°20′S 146°42′E], 22.–31.xii.1973, H. Shima [ BLKU] ; 2 ♂♂, same locality, 23.v.1965, leg. R . W. Crosskey [determined as Dolichocolon klapperichi Mesnil by Crosskey] [ BMNH] ; 1 ♂, Eastern Highlands / Goroka [6°06′S 145°23′E], 30.v.1965, R . W. Crosskey [determined as Dolichocolon klapperichi Mesnil ] [ BMNH] . 1 ♂: same locality and collector, 29.v.1965 [determined as Dolichocolon klapperichi Mesnil ] [ BMNH] ; 1 ♂, Morobe District, Sunshine Pltn. [7°07′S 146°62′E], 6.vi.1967, leg. T . L. Fenner [determined as Dolichocolon sp. by B.K. Cantrell] [ DASF] . Thailand: 1 ♂, Chiang Mai Prov., Mae Thang [18°13′N 100°20′E], hill side, 10.ii.2003, leg. H. Kurahashi [ BLKU] ; 1 ♂, Doi Huai Hwer, 1231 m, Fang , 27.ix.1975 [determined as Dolichocolon klapperichi Mesn by H. Shima] [ BLKU] .

Re-description: Body length: 8.4–10.9 mm.

Coloration and pruinescence: Head mainly black. Thickened portion of third aristomere brownishyellow. Palpus mainly yellow. Thorax mainly black; posterior 1/3–4/5 of scutellum reddish-yellow; scutum covered with grey pruinescence, presutural area with four dark vittae. Abdomen black, more or less reddish laterally on tergites 3 and 4; tergite 3 with a transverse band of whitish-grey pruinescence on anterior 1/3–3/4, tergite 4 pruinose on anterior 2/3–1/1, tergite 5 on anterior 1/2–1/1 (the remaining posterior surface is covered with brown-bronze pruinescence) ( Fig. 13B–D ).

Head ( Fig. 13A ): Compound eye usually covered with scattered ommatrichia, about as long as combined diameter of one to four facets (visible under> 60 ¥ magnification on black background); more rarely compound eye bare. Second aristomere about 4.0–7.5 times as long as wide. Thickened part of third aristomere about 2.0–2.5 times as long as second aristomere. Postpedicel about seven to nine times as long as pedicel. Vertex at its narrowest point 0.9–1.1 times as wide as compound eye in dorsal view. Gena in profile about 0.20–0.25 times as high as compound eye. Lateral vertical seta not differentiated from postocular setae. Postocular setae fine, relatively long, slightly bent anteriorly. Prementum about 1.0–1.5 times as long as wide.

Abdomen ( Fig. 13B–D ): Syntergite 1 + 2 with short and robust median marginal setae. Tergite 3 with one pair of median marginal setae about 0.8–0.9 times as long as corresponding tergite. Tergite 4 with a row of nine to 12 marginal setae. Tergite 5 with a row of marginal and discal setae.

Male terminalia ( Fig. 13E–G ): Epandrium relatively long and convex. Hypandrial arms long, not or slightly bent anteriorly. Basal 1/2 of cerci prominent in lateral view, distal 1/2 massive and strongly bent posteriorly ( Fig. 13E ). Posterior surface of distal 1/2 of cerci flat ( Fig. 13F, G ). Medial preapical tooth of cerci not developed. Distal 1/2 of surstylus, in lateral view, narrow and evenly curved posteriorly, slightly pointed apically ( Fig. 13E ); posterior surface of surstylus grooved (concave) ( Fig. 13E–G ). Basal 1/2 of surstylus wide.

Hosts: Unknown.

Distribution: Australasian: Papua New Guinea. Oriental: China (Fujian, Yunnan), Indonesia (Sumatra), Thailand. Palaearctic: Japan (Honshu) (new record).

Notes: All records from China mentioned by Chao et al. (1998) and O’Hara et al. (2009) as D. klapperichi Mesnil (Guangdong, Hainan, Guangxi, Gansu, Jilin, Ningxia, Sichuan, Shanxi, Shaanxi) need confirmation. The male terminalia figured by Chao et al. (1998: 1890, 626L1, 3626Mp) do not in our opinion belong to either D. orientale or to any described species except possibly D. cantrelli sp. nov.

Figures

Figure 13. Dolichocolon orientale Townsend. A, head in lateral view (Berastagi, Sumatra); B, abdomen in dorsal view (Berastagi, Sumatra); C, same (Yunnan, China); D, same (Honshu, Japan); E–G, holotype of D. orientale: E, terminalia in lateral view; F, terminalia in posterior view; G, right half of cerci and surstylus in posterior view.