Correlation between wing size and position of a hind crossvein in the Siphonini (Diptera: Tachinidae)

In the Siphonini (Diptera: Tachinidae), crossvein dm-cu is relatively near the wing margin (the primitive condition within the tribe) in larger siphonines and displaced toward the middle of the wing (derived condition) in smaller siphonines. Displacement of dm-cu increases the passively deformable area of the wing relative to the supporting area, presumably increasing the aerodynamic efficiency of flight in smaller siphonines. The trend toward increasing the passively deformable area in smaller siphonines compared with larger ones is complementary to the general trend toward reduced venation in tiny insects.     

福建柃属植物叶片脉序的比较研究

观察了福建柃属18种1变型植物的叶脉特征.结果表明,柃属脉序主要为环节曲行羽状脉;一级脉纤细至中等粗细,近直行,一级脉的差别较小;二级脉夹角多为锐角,也有直角或钝角;二级间脉有简单型和复合型两种;三级脉为结网型,叶缘末级脉有结环型、不完全型;网眼大小、形状不规则,发育均为不完善型.且这些性状稳定,表明柃属植物的脉序具有分类学价值,亦可为柃属的系统学研究提供一些有用的资料.     

中国沟瓣属植物叶脉序特征观测研究

利用清净标本制作法对8种沟瓣属(Glyptopetalum Thw.)植物的叶脉序进行了细致的观察,探讨了叶脉序在沟瓣属中的分类学价值.研究结果表明:1)沟瓣属植物在叶脉序特征上显示出一些共性,叶脉序类型均为环结曲行羽状脉,一级脉直行,叶缘末级脉结环状,均不具边脉;2)不同种在一级脉、二级脉、间二级脉、三级脉、网眼、盲脉上存在一定差异,可结合宏观特征作为本属植物的分类依据;3)叶脉序特征支持曾被合并的近缘类群大陆沟瓣与长梗沟瓣、细梗沟瓣与皱叶沟瓣各为独立的分类群.     

First host record for the rogadine genus Pholichora van Achterberg (Hymenoptera: Braconidae) with description of a new species and notes on convergent wing venation features

The wasp genus Pholichora is recorded as parasitic on geometrid moth larvae on the basis of a new species, P. subscleroma Quicke and Shaw from South Africa (Natal), reared from Ascotis reciprocaria (Walker) (Lepidoptera: Geometridae, Ennominae). The discovery of this new species necessitates a reassessment of the characters separating Pholichora from Hemigyroneuron. An association between wing venation features (ovoid cells and scleromes) and nocturnality is discussed.     

Partial revision of the Indo-Australian braconine wasp genus Gammabracon Quicke (Hymenoptera: Braconidae) with descriptions of new species from Indonesia (Mollucas), Malaysia,Philippines and Thailand

Ten distinctive new species of the taxonomically difficult braconine wasp genus Gammabracon Quicke, 1984 are described: G. apicoluteus sp. nov. from Malaysia (Negri); G. curticornis sp. nov. from Malaysia (Negri); G. philippinensis sp. nov. from the Philippines; G. siamensis sp. nov. from Thailand; G. striatus sp. nov. from West Malaysia; G. strandorum sp. nov. from Indonesia (Java), G. subvena sp. nov. from Malaysia (Negri and Sabah); G. townesorum sp. nov. from the Philippines; G. variipennis sp. nov. from Thailand; and G. wegeneri sp. nov. from Indonesia. Myosoma forticarinata Cameron, 1902 is transferred to Gammabracon, hence Gammabracon forticarinata comb. nov. A lectotype is designated for Gammabracon erythroura (Cameron). The status of Cratobracon strandiellus (Cameron) is discussed and a new combination proposed, Shelfordia strandiellus Cameron, 1910 comb. nov. (=Bracon strandiellus Cameron). Paucity of discrete morphological variation makes separation of most of the species with orange-red mesosoma, black metasoma and conspicuous back setae currently unrealistic and it may be that there is a single widespread and morphologically variable species.

http://zoobank.org/urn:lsid:zoobank.org:pub:56B8884E-99C8-4B53-9747-D011F552312D     

关于紫荆属(豆科)叶型和脉序的研究(英文)

紫荆属(豆科)包括8个现存种,其中5个种分布在东亚,2个种分布在北美,1个种分布在 欧洲.通过观察及显微研究,表明其叶型及脉序等叶部特征可为该属内种的区分提供清楚的鉴别特 征.这些特征与其他形态学证据相结合,可以为该属的鉴定和属内的系统演化关系提供有力的佐 证.鉴定了一份发现于山东山旺中新世的叶化石,它具有明显的叶枕和紫荆属的叶部特征.     

福建薯蓣属植物叶脉序特征及其分类学意义

系统观察了福建薯蓣属14种植物的叶脉特征。根据脉序差异可分为两种类型，即羽状脉、弧形脉，由于各种间在一级脉的数目、方式、二级脉的夹角、走向、三级脉的类型、网眼发育情况、叶缘末级脉序类型以及盲脉分支情况方面，存在种间差异，且形状稳定。这表明薯蓣属植物的脉序具有分类学价值。     

银杏叶脉连汇和脉间树脂道观察

银杏叶脉间有明显的连汇现象,而且连汇方式多样;叶脉外有1-3个大型分泌细胞;树脂道灰白色并在二叉脉间成不连续的条状分布长0.5—10mm,宽0.5—1mm。为了便于读者更好地理解裸子植物类群间的演化关系,在对银杏叶片描述时应附加以下内容”…开放二歧脉序,稀有连汇,自叶柄至叶缘在二歧脉间有不连续的纵行条状灰白色树脂道;”银杏叶中的树脂道可经透明后从叶肉中取出,故可作为植物学中观察树脂道的好材料。     

福建防己科植物叶脉序比较研究

系统观察了福建防己科７属１３种植物的叶脉特征。根据脉差差异分为三种类型，即：掌状脉，复出掌状脉和顶聚脉，脉序的类型与属的划分不具相关性。由于各种间在脉的起源点，一级脉的数目，分支方式，是否形成脉环，二级脉的夹角，走向及脉环的行为上，存在着种间差异，且形状稳定，这表明，防己科植物的脉序具有分类学价值，同时可为该科的系统学研究提供有用资料。