Dolichocolon cantrelli, Cerretti & Shima, 2011

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 : 573-575

DOLICHOCOLON CANTRELLI SP. NOV.

( FIG. 20A–E )

Type material: Holotype ♂: [ Australia] Ingham [18°39′S 146°09′E] Q/ 26 May 1961 / R Straatman [ ANIC] . Paratypes: Australia: 1 ♂, Northern Territory, Surprise Creek, 16.2SS 136.0SE, 45 km south-west of Borroloola , ix.1975, M.S. Upton [ ANIC] . Papua New Guinea: 1 ♂, Leiwomba Plain, 7.5.57, Coll J H Ardley [ DASF] . Taiwan: 2 ♂♂, Takao [= Kaohsiung,: 22°37′N 120°16′E], 14.xii.1907 [one specimen without terminalia] [ USNM] .

Etymology: Named after the Australian dipterist Bryan K. Cantrell, who first figured the male terminalia of this species ( Cantrell, 1988).

Description: Body length: 6.5 - 7.9 mm. Coloration and pruinescence: Head mostly black, covered with grey pruinescence. Palpus mainly brown, shading into yellowish just distally. Scape and pedicel varying from brown to fuscous red. Thorax mainly black; posterior 2/3 (or more) of scutellum reddishyellow; scutum with four presutural dark vittae, lateral vitta distinctly outlined and ending wedgeshaped beside posthumeral seta. Legs black. Tegula and basicosta black or dark brown. Abdomen black, more or less reddish laterally on tergites 3 and 4; tergites 3-5 with transverse bands of whitish-grey pruinescence on anterior 1/3–2/3 ( Fig. 20A, B ); transverse bands on tergites 3 and 4 more or less interrupted mediodorsally, showing a narrow longitudinal black vitta.

Head: Compound eye bare. Second aristomere 6.5-10.0 times as long as wide. Thickened part of third aristomere about 0.6-0.7 times as long as second aristomere. Postpedicel 6.5-7.1 times as long as pedicel. Vertex at its narrowest point 1.00-1.15 times as wide as compound eye in dorsal view. Lateral vertical seta not or slightly differentiated from postocular setae. Six to eight frontal setae descending below level of base of arista. Fronto-orbital plate with one irregular row of medioclinate setae or setulae lateral to row of frontal setae. Gena in profile about 0.2 times (or less) as high as compound eye. Postocular setae fine, relatively long, slightly bent forwards. Prementum about 1.0–1.5 times as long as wide.

Abdomen: Syntergite 1 + 2 with short and weak median marginal setae, only slightly differentiated from marginal setulae. Tergite 3 with one pair of median marginal setae about as long as 2/5-3/5 of corresponding tergite. Tergite 4 with a row of nine to 12 marginal setae shorter than corresponding tergite. Tergite 5 with a row of marginal and discal setae.

Male terminalia ( Fig. 20C–E ): Epandrium short, subglobular ( Fig. 20C ). Hypandrial arms long, apically slightly bent anteriorly. Distal 1/4 of cerci not strongly

REVISION OF DOLICHOCOLON 575

separated. Cerci, in lateral view, strongly bent posterodorsally and widened apically, basally evenly convex ( Fig. 20C–E ). Distal 1/3 of surstylus strongly bent posterodorsally and twisted medially of about 90° (or more) ( Fig. 20D, E ); basal 2/3 massive and well characterized by a strong laterobasal, horn-like apophysis (slightly bent medially ( Fig. 20C–E ), entirely covered with fine, dense, setae.

Hosts: Unknown.

Distribution: Australasian: Australia (Queensland, Northern Territory), Papua New Guinea. Oriental: Taiwan.

Figures

Figure 20. Dolichocolon cantrelli sp. nov. A, abdomen in dorsal view (paratype: Papua New Guinea); B, abdomen in dorsal view (paratype: Northern Territory, Australia); C, terminalia in lateral view (paratype: Taiwan; arrow indicates laterobasal, horn-like apophysis of surstylus); D, terminalia in posterior view (holotype); E, terminalia in posterolateral view (holotype; arrow indicates laterobasal, horn-like apophysis of surstylus).