DESCRIPTIONS OF TWO NEW GENERA AND TWO NEW SPECIES OF BAISSODIDAE FROM CHINA (SPHECOIDEA, HYMENOPTERA)
DESCRIPTIONS OF TWO NEW GENERA AND TWO NEW SPECIES OF BAISSODIDAE FROM CHINA (SPHECOIDEA, HYMENOPTERA)
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发表时间：
1992
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通讯作者：
J. Zhang
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作者：
J. Zhang
本文描述了属于膜翅目伞形科（Baissodidae）的两个新属和两个新种。所有模式标本均为笔者收集，现藏于山东省博物馆。 1.Eubaissodes gen。模式种：Eubaissodes completus sp. 11. 诊断。头大。眼睛大。下颌骨相当强壮且长。盂唇舌状。雌性触角12节。前胸背板发达，中背板和后背板也发达，有缝沟，盾板大，五角形。前翅的横脉 1r-rs 不完整，既不与横脉 2r-rs 平行，也不与脉 Rs + M 平行。细胞 3r 宽而短，先端尖锐。电池 2rm 几乎与电池 3rm 一样长。交叉静脉距 Rs+M 静脉分叉 1m-cu，与中间相交细胞 2rm。交叉静脉 2m-cu 会合单元 3rm。交叉静脉 cu-A 静脉 M + CuA 的交叉。后翅具交叉脉 cu-A 脉 M + CuA 交汇叉。腿短而粗，胫骨上有几根长骨刺，跗节的第一节又细又长。爪相当长，末端有棱，内缘呈锯齿状。叶柄短而粗壮，梯形。胃近圆形，腹部顶端截形，刺弯曲，圆柱形。比较：这个新属与Baissodes Rasnitsyn属有亲缘关系，Baissodes Rasnitsyn是俄罗斯外贝加尔湖中生代晚期的一个属，但可能与后者分开，因为其头部相当大，下颌相当强而长，前翅的十字脉Ir-rs不与静脉Rs+M平行，细胞与细胞一样长2rm 3rm。交叉脉 1m-cu 远离静脉 Rs + M 的分支，并且在后翅交叉静脉 cu-A 会合静脉 M+CuA 的分支。分布：中国山东；侏罗纪晚期。Eubalssodes completus sp.nov。 （PI. I I；图 1}正模标本：No. L88701。头部圆形，长度（不包括下颌）与宽度大致相同。眼睛椭圆形，彼此对称。小眼位于头部后缘附近，排列成三角形。下颌呈镰刀形，先端较尖，基部加宽，大约为头部长度的一半。触角较小，圆环较小，长度为体长的一半以上，有花萼短，约与第三节一样长，花梗较小，圆形，鞭毛丝状，各节长度相等，长圆形，前胸背板横向长三到四倍，侧部延伸至背板，中胸板和后背板均横向，长度相同，盾片宽大于长，有不规则的缝线凹槽，如图1d所示。体，股骨近与胫骨等长，前者与后者末端一样宽，跗节为胫节长的1.5倍，第一节比胫节短，约为第二节长，后者比第三节短，但比第四节长。叶柄长于胸部，宽大于长。腹节明显长于第二节和第三节，先端有钝刺。体长10.1毫米，宽2.7毫米；后翅长4.6毫米，宽1.4毫米。产地和层位：山东省莱阳县南里格庄（上侏罗统）。2.Calobaissodes gen. 类型：Calobaissodes sp. 诊断。下颌骨细而长，与横脉2r-rs平行。细胞 3rm 明显长于细胞 2rm。 交叉静脉 1m-cu 与静脉 Rs + M 的分支相交。交叉静脉 cu-a 在其分支之前与静脉 cu-a 相交。 CuA。 爪短，其内缘无小齿。
The present paper described two new genera and two new species belonging to the family Baissodidae, Sphecoidea of Hymenoptera. All the type specimens were collected by the author, and are kept in the Shandong Provincial Museum. 1.Eubaissodes gen. nov.Type species: Eubaissodes completus sp. nov.Diagnosis. Head large. Eyes large. Mandibles rather strong and long. Labrum lingui-form. Female antennae 12-segmented. Pronotum well developed, mesonotum and metanotum with sutural grooves also well developed, propodeonis scutum large, pentagonal. Front wings with cross-vein 1r-rs incomplete, and neither parallel to cross-vein 2r-rs nor to vein Rs + M. Cell 3r wide and short, with apex sharp. Cell 2rm nearly as long as cell 3rm. Crossvein 1m-cu far from fork of vein Rs + M, and meeting cell 2rm at middle. Cross-vein 2m-cu meeting cell 3rm. Cross-vein cu-a meeting fork of vein M + CuA. Hind wings with cross-vein cu-a meeting fork of vein M + CuA. Legs short and massive, tibiae armed with a couple of long spurs, tarsi with the first segment thin and long. Claws rather long, forcating terminally, and its inner edges serrate. Petiole short and stout, trapezoid. Gaster subcircular, apex of abdomen truncate, and sting curved, cylindrical.Comparison: This new genus is related to Baissodes Rasnitsyn, a genus from the late Mesozoic of Trans Baikal, Russia, but may be separated from the latter by the rather large head, rather strong and long mandibles, in front wing the cross-vein Ir-rs not parallel to vein Rs+M, cell 2rm as long as cell 3rm. cross-vein 1m-cu far from fork of vein Rs + M, and in hind wing cross-vein cu-a meeting fork of vein M+CuA.Distrbution: Shandong, China; Late Jurassic.Eubalssodes completus sp.nov. (PI. I I; fig 1}Holotype: No. L88701. Head circular, about as long (excluding mandiblen) as wide. Eyes oval, srparual from each other Ocelli lying near posterior margin of head, arranged in a triangle. Mandibles falcate, with apex rather sharp, widened at base, and about one half the length of head. Antennae with torulus small, more than one half as long as body, with scape short, about as long as the third segment, pedicel rather small, circular, flagellum filiform, segments each equal in length, oblong, three or four times as long as wide. Pronotum transverse, with lateral parts running to tegulae, both mesonotum and metanotum transverse, and identical in length, propodeonis scutum wider than long, marked with irregular sutural grooves. Wing venation as shown in fig. 1d. Legs lighter in color than body, femora nearly as long as tibiae, the former as wide as terminal part of the latter, tarsi 1.5 times as long as tibiae, with the first segment slightly shorter than tibiae, about twice as long as the second, the latter longer than the third, the fifth shorter than the third but longer than the fourth. Claws longer than the fifth rarsal segment. Spurs of posterior tibiae nearly one-third the length of the first tarsal segment. Abdomen (including petiole) longer than thorax, and as wide as the latter. Petiole wider than long. Gaster at most w ith three segments distinguishable, the first segment obviously longer than the second and the third. Apex of abdomen light in color, with sting obtuse at apex.Body 10.1 mm long, 2.7 mm wide; front wing 6.7 mm long, 2.5 mm wide; hind wing 4.6 mm long, 1.4 mm wide.Locality and horizon: Nanligezhuang of Laiyang County, Shandong Province; Laiyang Formation (Upper Jurassic).2.Calobaissodes gen. nov.Type species: Calobaissodes strigosus sp. nov.Diagnosis. Eyes kidney-shaped. Mandibles thin and long. Front wings with cross-vein Ir-re rather long, and parallel to cross-vein 2r-rs. Cell 3r narrow and long, apex sharp. Cell 3rm distinctly longer than cell 2rm. Both cells 1r and 2r rather narrow and long. Cross-vein 1m-cu meeting fork of vein Rs + M. Cross-vein 2m-cu meeting cell 3rm. Cross-vein cu-a meeting vein M + CuA before fork of it. Hind wings with cross-vein cu-a far from fork of vein M + CuA, and meeting vein CuA. Vein M short. Claws simple, its inner edge without denti-cles. Petiole cylind