Arachnospila (Ammosphex) tobiasi Loktionov and Lelej

Loktionov, Valery M. & Lelej, Arkady S., 2011, Review of the subgenus Ammosphex Wilcke, 1942 of the genus Arachnospila Kincaid, 1900 (Hymenoptera: Pompilidae) of the Russian Far East and East Siberia, Zootaxa 3137, pp. 1-30 : 18-23

Arachnospila (Ammosphex) tobiasi Loktionov and Lelej , sp. nov.

( Figs 1, 2 , 40 , 71 , 91 , 117, 118)

Diagnosis of male. The male of this species is easily distinguished from other males of the subgenus Ammosphex by having hypopygium with well developed baso-lateral lobes ( Figs 1, 2 vs. 3–12). Genitalia as in Fig. 40 . The differences from other males of the subgenus Ammosphex , which are distributed in the Russian Far East and East Siberia, are given in the key below.

Diagnosis of female. The female of this species differs from other females of the subgenus Ammosphex by having ratio of eye width to half frontal width 0.8 and less (0.9 and more in Arachnospila (Ammosphex) anceps ( Wesmael, 1851) and A. (A.) wolfi Lelej, 1995 ), by protarsomere 1 with three short spines of tarsal comb (four long spines in A. (A.) kaszabi Wolf and Móczár, 1972 ), by first flagellomere length 4.2–4.3 × its width (4.4 × and more in A. (A.) zonsteini Loktionov and Lelej , sp. nov.), by apical flagellomere length almost 3 × its width (2 × in A. (A.) orientausa sp. nov.), and by mesopleuron and propodeum with silver micropubescence (brownish micropubescence in other females).

Description. MALE. Body length 6.8 mm. Fore wing length 5.9 mm. Head width 1.1 × its height. Ocelli small, POD/OOD 1.0. Ratio of genal median width to eye median width (lateral view) 0.3. Clypeus weakly longitudinally convex, anterior border weakly emarginate with very narrow smooth rim. Flagellomere 1 length 2.0 × its width. Relation of scape, pedicel and two first flagellomeres 27: 13: 26: 27. Mesosoma length dorsally 1.5 × its maximum width. Pronotum median length 0.4 × its median width, posterior pronotal border angulate. Metanotum median length 1.5 × metapostnotum median length. Metapostnotum rather shiny than matt, anterior border with two transverse striae, other part rugulose, posterior border with median smooth shiny triangle. Wings slightly infuscated with darker apical part, venation of fore wing as in Fig. 117. Hypopygium with basal lobe, median longitudinal carina and preapical tuft of long setae ( Figs 1, 2 ). Genitalia as in Fig. 40 .

Frons with scattered long brown erect setae. Genae and propleura with denser long pale brown erect setae. Each side of propodeum with 7–10 long pale brown setae. Pronotum with a few long and short erect setae. Fore coxae with 2–3 short erect setae. Mandible with 1 long strong and a few softer erect setae. Lower part of face, mesosoma with dense silver pubescence. Body regularly micropunctate. Body and legs black. Mandible brownish apically; T1 (except basal portion) and T2 ferruginous-red.

Description. FEMALE. Body length 8.3 mm. Fore wing length 7.1 mm. Head width 1.1 × its height. Ocelli small, POD/OOD 1.0. Ratio of genal median width to eye median width (lateral view) 0.6. Ratio of eye median width to half width of frons (frontal view) 0.75. Clypeus longitudinally convex, anterior border weakly emarginate with broad smooth rim narrowed medially ( Fig. 71 ). Labrum flat, anterior border straight. Flagellomere 1 length 4.2 × its width. Relation of scape, pedicel and first two flagellomeres 35: 12: 52: 45. Apical flagellomere acuminate. Mesosoma length dorsally 1.5 × its width. Pronotum median length 0.35 × its median width, posterior pronotal border obtuse-angulate. Metanotum median length 1.4 × metapostnotum median length. Metapostnotum matt with five transverse striae anteriorly and strigulate posteriorly, its posterior border with small smooth triangle medially ( Fig. 91 ). Spines of tarsal comb short, tarsomere 1 with three spines of tarsal comb, tarsomeres 2, 3 with two spines, tarsomere 4 with one spine, and tarsomere 5 without spines; apical spine of tarsomere 1 0.6 × length of protarsomere 2; apical spine of tarsomere 2 0.7 × length of tarsomere 3; apical spine of tarsomere 3 0.6 × length of tarsomere 4. Wings weakly infuscated with darker apical portion, venation of fore wing as in Fig. 118.

Upper part of frons and fore coxa with scattered long dark erect setae. Gena and propleura with denser long pale brown erect setae. Each side of propodeum with seven long brown erect setae. Clypeus, mid coxa, S3–S6 and T6 with a few erect setae. Mandible with 3–4 long curved setae. Lower part of face, gena, pronotum antero-laterally, pleurae, propodeum, and coxae posteriorly with silver-gray pubescence. Upper part of frons, vertex, pronotum, mesoscutum, scutellum, coxae anteriorly, and legs with iridescent mainly brownish pubescence. Metanotum with gray micropubescence. Body regularly micropunctate. Body and legs black. Mandible pale brown medially and dark brown apically; T1 (except basal portion), T2 and basal part of T3 ferruginous-red.

Type material. Holotype, 3, RUSSIA, Buryatia, Naushki, Selenga River, 30.VII.2007 (Lelej, Proshchalykin, Loktionov) [ IBSS]. Paratype, 1 Ƥ with the same label [ ZIN].

Distribution. Russia (Buryatia).

Biology. Inhabits steppe areas.

Etymology. Named after Vladimir I. Tobias (1929–2011), the world authority in Braconidae , for his contributions to the taxonomy of Pompilidae .

FIGURES 95–125. Part of fore wing of female (95–97, 99–109, 111, 113–116, 118–123, 125) and male (98, 110, 112, 117, 124). 95. Arachnospila (Ammosphex) abnormis . 96, 97. A. (A.) anceps . 98. A. (A.) belokobylskii , holotype. 99. A. (A.) dschingis . 100, 101. A. (A.) eoabnormis . 102, 103. A. (A.) kaszabi . 104. A. (A.) kurentzovi . 105. A. (A.) kurzenkoi . 106. A. (A.) kuwayamai . 107. A. (A.) mongolica . 108, 109. A. (A.) mongolopinata . 110, 111. A. (A.) orientausa sp. nov. (110, holotype; 111, paratype). 112, 113. A. (A.) rasnitsyni sp. nov. (112, holotype; 113, paratype). 114. A. (A.) mongolica . 115, 116. A. (A.) subvittata . 117, 118. A. (A.) tobiasi sp. nov. (117, holotype; 118, paratype). 119. A. (A.) trivialis . 120, 121. A. (A.) wolfi . 122, 123. A. (A.) yasumatsui . 124, 125. A. (A.) zonsteini sp. nov. (124, holotype; 125, paratype).

Figures

FIGURES 1 – 19. Sterna 7 and 8 (hypopygium) of male. 1, 2. Arachnospila (Ammosphex) tobiasi sp. nov., 3, holotype, S 7 – S 8 (1, ventral view; 2, lateral view). 3, 4. A. (A.) abnormis, 3, S 7 – S 8 (3, ventral view; 4, lateral view). 5, 6. A. (A.) eoabnormis, 3, paratype, S 7 – S 8 (5, ventral view; 6, lateral view). 7, 8. A. (A.) kurentzovi, 3, holotype, S 7 – S 8 (7, ventral view; 8, lateral view). 9, 10. A. (A.) kuwayamai, 3, S 7 – S 8 (9, ventral view; 10, lateral view). 11, 12. A. (A.) kurzenkoi, 3, holotype, S 7 – S 8 (11, ventral view; 12, lateral view). 13, 14. A. (A.) mongolica, 3, S 7 – S 8 (13, ventral view; 14, lateral view). 15, 16. A. (A.) anceps, 3, S 7 – S 8 (15, ventral view; 16, lateral view). 17, 18. A. (A.) trivialis, 3, S 7 – S 8 (17, ventral view; 18, lateral view). 19. A. (A.) subvittata, 3, lectotype, S 7 – S 8, ventral view. (19 from Lelej & Loktionov 2010). Scale bar 0.5 mm.

FIGURES 38 – 43. Male genitalia, ventral view. 38. Arachnospila (Ammosphex) abnormis. 39. A. (A.) eoabnormis, paratype. 40. A. (A.) tobiasi sp. nov., holotype. 41. A. (A.) kuwayamai. 42. A. (A.) kurentzovi, holotype. 43. A. (A.) mongolica. Scale bar 0.5 mm.

FIGURES 67 – 76. 67 – 75. Clypeus of female, frontal view; 76. Metapostnotum, dorsal view. 67. Arachnospila (Ammosphex) orientalis sp. nov., paratype. 68. A. (A.) rasnitsyni sp. nov., paratype. 69. A. (A.) mongolica. 70. A. (A.) subvittata. 71. A. (A.) tobiasi sp. nov., paratype. 72. A. (A.) trivialis. 73. A. (A.) wolfi. 74. A. (A.) yasumatsui. 75, 76. A. (A.) zonsteini sp. nov., paratype.

FIGURES 77 – 94. Metapostnotum of female, dorsal view. 77. Arachnospila (Ammosphex) abnormis. 78. A. (A.) anceps. 79. A. (A.) dschingis. 80. A. (A.) eoabnormis. 81. A. (A.) kaszabi. 82. A. (A.) kurentzovi. 83. A. (A.) kurzenkoi. 84. A. (A.) kuwayamai. 85. A. (A.) mongolica. 86. A. (A.) mongolopinata. 87. A. (A.) orientausa sp. nov., paratype. 88. A. (A.) rasnitsyni sp. nov., paratype. 89. A. (A.) mongolica. 90. A. (A.) subvittata. 91. A. (A.) tobiasi sp. nov., paratype. 92. A. (A.) trivialis. 93. A. (A.) wolfi. 94. A. (A.) yasumatsui.