Billaea kolomyetzi Mesnil, 1970

Zhang, Chun-Tian, Shima, Hiroshi, Wang, Qiang & Tschorsnig, Hans-Peter, 2015, A review of Billaea Robineau-Desvoidy of the eastern Palearctic and Oriental regions (Diptera: Tachinidae), Zootaxa 3949 (1), pp. 1-40 : 14-16

Billaea kolomyetzi Mesnil, 1970

Figs. 28–31, 71, 80

Billaea kolomyetzi Mesnil, 1970: 121 .— Herting 1984: 139 (catalog).— Herting & Dely-Draskovits 1993: 359 (catalog).— Ziegler & Shima 1996: 428 (distribution).— Richter 2004: 352 (key).— Zhang et al. 2004: 127 (checklist).— O’Hara et al. 2009: 28 (catalog).

Billaea maritima of Kolomiets (nec Schiner 1862): Kolomiets 1966: 85 (misidentification).— Mesnil 1970: 121 (as misidentification).— Herting 1984: 139 (as misidentification; catalog).— Herting & Dely-Draskovits 1993: 359 (as misidentification; catalog).

Diagnosis. Prementum 5–6 times as long as wide; arista pubescent; 2 katepisternal setae, basicosta reddish brown; fore claws and pulvilli short in male, abdomen broadly reddish yellow to brown.

Redescription. Body length 12–14 mm.

Male. Head ( Figs. 71 , 80 ). Frontal vitta and lunule dark brown; fronto-orbital plate, parafacial and upper occiput with grayish white pruinosity; gena reddish brown with grayish white pruinosity; antenna with pedicel and basal 1/4–1/5 of flagellomere 1 reddish yellow to reddish brown, dark brown on apical 3/4–4/5 of flagellomere 1; palpus reddish yellow. Vertex 0.20–0.23 of head width; frontal vitta well widened anteriorly, about 1.5 times as wide as fronto-orbital plate at middle; fronto-orbital plate with dense, fine, short black hairs; parafacial bare, 2.5–3 times as wide as flagellomere 1; facial carina low and short, at most on basal 1/2 of antenna; lower margin of face protruding forward; genal height 0.38–0.45 of eye height; 8–9 inclinate frontal setae; inner vertical seta less than 1/2 of eye height. Antenna short, flagellomere 1 2.0–2.2 times as long as wide and about 3 times as long as pedicel; pedicel with a long seta which is about as long as flagellomere 1; arista distinctly longer than antenna, the pubescence about as wide as base of arista. Prementum 5–6 times as long as wide; palpus slightly longer than antenna.

Thorax. Black in ground color; dorsum and pleura with dense grayish pruinosity; scutum with 4 dark longitudinal vittae on presutural area and 5 vittae on postsutural area, presutural outer vitta about 1.5 times as wide as inner one. Four or five postpronotal setae, strong three basal setae set in a distinct triangle; 2–3 presutural and 2– 3 postsutural acrostichal setae; 3–4 presutural and 4 postsutural dorsocentral setae; 3 postsutural intra-alar setae; 4 supra-alar setae, anteriormost seta shorter than supra-alar seta; 2 katepisternal setae. Wing. Hyaline, slightly tinged with pale brown; tegula black, basicosta reddish yellow; lower calypter white; halter brownish yellow, apex yellowish white. Relative lengths of costal sectors of 2nd, 3rd and 4th approximately as 3:4:2; bend of vein M nearly right-angled, with short appendix; vein M from dm-cu crossvein to its bend about 2.2 times distance between the bend and wing margin. Legs. Black. Fore claws and pulvilli shorter than 5th tarsomere; fore tibia with a row of short anterodorsal setae on basal 3/5 and 2 posterior setae; mid tibia with 1 anterodorsal seta, 2–3 posterodorsal setae and 1 ventral seta; hind tibia with 1 strong seta among row of rather closely set anterodorsal setae, 2–3 posterodorsal setae and 1 strong ventral seta.

Abdomen. Black, broadly reddish yellow to reddish brown on sides of tergites 2 to 4 and dark brown on longitudinal median portions and entire tergite 5, thinly covered with grayish pruinosity on dorsum, pruinosity denser on longitudinal median portions, tergites 4 and 5. Syntergite 1+2 and tergite 3 each with 1 lateral marginal seta, without median marginal setae; tergites 4 and 5 each with a row of marginal setae; tergites with recumbent black hairs, hairs on tergite 5 strong and suberect. Male terminalia (Figs. 28–31). Posterior lobe of sternite 5 wide, weakly pointed at apex of posterior lobe. Cerci short, narrowed at apical half, weakly separated at apex; surstylus long, narrowed apically in caudal view; postgonite subequal to basiphallus; distiphallus long, sclerotized basal part distinctly shorter than membranous apical part.

Female. Vertex 0.3–0.4 of head width, widened anteriorly; frontal vitta about as wide as fronto-orbital plate at narrowest point; genal height about 0.5 of eye height; flagellomere 1 2.0–2.5 times as long as wide and pedicel; inner vertical setae about 0.7 times as long as eye height, outer vertical seta 0.7–0.8 times as long as inner vertical seta, ocellar setae stronger than frontal setae, 2 proclinate orbital setae, 1 upwardly directed prevertical seta; abdomen ovoid, dark brown in ground color, reddish brown only on sides of syntergite 1+2 and tergite 3, dorsum of tergites 3 to 5 densely covered with grayish white pruinosity except black posterior margin of each tergite, a narrowly grayish white pruinose median longitudinal vitta distinct; abdominal tergite 3 with 2 median marginal. Other characters are same as in male.

Type material examined. Holotype ♂, POLAND, Bialowieski Park Narodowy [as “Bialowieska”], ( CNC).

Other material examined. CHINA. Heilongjiang: 3♂♂, Tuqiang, 22.vii.1989, M.-L. Sheng. Jilin: 3♂♂, 1♀, Daxinggou, Wangqing, Yanbian, collected in yellow Pan trap, 27.vii–11.viii.2005 ( SYNU). RUSSIA: 1♂, Russian Far East, Ussuria, Primor’ye 30 km W. of Cherayshevka, 250–450 m, 24.vii.1990, T. Saigusa (KUM).

Distribution. China (Heilongjiang, Jilin), Europe (Scandinavia, E Poland), N Russia, W Siberia, Russian Far East (Ussuria, Sakhalin).

Remarks. Billaea kolomyetzi is distinguished from other species of Billaea in having broad vertex with 0.20– 0.23 of head width, undeveloped facial carina, pubescent arista, 4 dark longitudinal vittae on presutural scutum, 2 katepisternal setae, fore tibia with 2 posterior setae, abdomen reddish yellow to brown on sides of tergites 2 to 4, and tergites 3 and 4 covered with grayish white pruinosity with a dark median vitta.

Figures

FIGURES 64 – 72. Billaea spp., heads of male in lateral view. 64. B. atkinsoni (Baranov). 65. B. brevicauda sp. nov. 66. B. carinata sp. nov. 67. B. chinensis sp. nov. 68. B. ficorum (Townsend). 69. B. flava sp. nov. 70. B. fortis (Rondani). 71. B. kolomyetzi Mesnil. 72. B. kurahashii sp. nov. Scale bars = 0.5 mm.

FIGURES 73 – 81. Billaea spp., heads of male in anterior view. 73. B. atkinsoni (Baranov). 74. B. brevicauda sp. nov. 75. B. carinata sp. nov. 76. B. chinensis sp. nov. 77. B. ficorum (Townsend). 78. B. flava sp. nov. 79. B. fortis (Rondani). 80. B. kolomyetzi Mesnil. 81. B. kurahashii sp. nov. Scale bars = 0.5 mm.