细蠓属一新种及格尔木细蠓雄虫记述(双翅目:蠓科)

报道我国青海省格尔木地区细蠓属Leptoconops1新种一青海细蠓Leptoconops(Leptoconops)qinghaiensis Liu,Zhang et Gong,并记述了格尔木细蠓Leptoconops(Holoconops)geermuensis Liu et Yu雄虫。正模标本保存在北京医学昆虫标本馆,副模标本保存在兰州军区军事医学研究所。     

沱沱河细蠓新种描述(双翅目,蠓科)

报道青藏公路沿线唐古拉山区沱沱河采获的细蠓属全蠓亚属1新种,即沱沱河细蠓Leptoconops(Holo—Conops)tuotuohea sp．nov,对其进行了形态描述,新种的模式标本分别保存在军事医学科学院医学昆虫标本馆和兰州军区军事医学研究所。     

塔里木细蠓新种的描述(双翅目:蠓科)

塔里木细蠓Leptoconops(Holoconops)tarimensis sp.nov.是古塞细蠓复合体(Leptoconops kerteszi complex)内的一新种。古塞细蠓Leptoconops(H.)kerteszi Kerteszi是分布很广的蠓种,与其近缘的种也较多,我国内蒙古等地也曾有记录。但从近期研究资料看,其近缘种较为复杂,对我国的该复合体的种类须作进一步的详细研究。 塔里木细蠓,系1966年采自新疆,曾在1982年出版的《中国重要医学动物鉴定手册》第三章中作了简单记述,当时只描绘了雌虫特征简图,并声明“待研究确定后描述发表”。现就两性成虫的特征描述报道于后。     

我国细蠓属的一新种——郧县细蠓 Leptoconops(Holoconops)yunhsienensis sp.nov.(双翅目:蠓科)

细蠓属(Leptoconops Skuse,1890)是吸血蠓类之一,其主要特征为:两复眼相距很远;雌性成虫的触角除围角片(antennaria)外有13节(细蠓亚属Leptoconops sens str.)或12节(全蠓亚属Holoconops Kieffer,1918);翅乳白色;径脉后各脉轻度角化;在径脉之后有一褶痕状的附脉(additional vein);无径中横脉(r-m);爪简单,或基部有分叉;雌性尾端有较长的尾叶;雄性抱握器端节的端部有一小的棘状短节。     

双钩细蠓新种描述及其飞舞活动的初步观察(双翅目:蠓科)

1985年7月,在新疆克拉玛依市北,乌尔禾镇河滩发现有细蠓刺叮,从而进行了成蠓飞舞活动数量动态的初步观察。观察之日天晴无风,用60目绢纱制作的气网,每小时作交叉挥网采集5分钟,自清晨6时至下午22时,共采获细蠓雌性成虫443只,雄虫227只。经分类鉴定,所捕细蠓均为一新种。根据特征命名为双钩细蠓Leptoconops(Holoconops)binangulus sp.nov.     

郧县细蠓成虫形态特征的描述(双翅目:蠓科)

郧县细蠓Leptoconops(Holoconops)yunhsienensis Yu,1963系1957年发现于湖北省郧县与均县毗邻地区,当时曾对所获雌虫作了初步描述(虞以新,1963)。1978—1979年在四川调查发现岷江、沱江、嘉陵江、雅砻江与金沙江沿岸均有该种细蠓的活动。因本种正模标本被损毁,模式产地又已为丹     

青海毛蠓属一新种记述及三种主要蠓虫日活动节律的初步观察(双翅目:蠓科)

描述了采自青海省共和县江西沟青海湖岸边毛蠓属Dasyhelea l新种：青海毛蠓Dasyhelea qinghaiensis Liu et Shi,sp．nov．,并初步观察了青海毛蠓Dasyhelea qinghaiensis Liu et Shi．sp．nov、格尔木细蠓Leptoconops(Holoconops)germuensis Liu et Yu和原野库蠓Culicoides homotomus Kieffer的,日飞舞活动规律。模式标本保存于中国医学昆虫标本馆和兰州军区军事医学研究所标本室。     

岷江流域蠛蠓三新种(双翅目:蠓科)

1978年,在岷江流域进行蠓类调查中,发现蠛蠓属(Lasiohelea Kieffer,1921)的三个新种,现分别描述如下。1.钩茎蠛蠓 Lasiohelea uncusipenis,新种(图1) 雄虫 头部 复眼裸。触角末4节延长,末节有乳头状端突,2—14节各节的相对长度是15:11:11:11:10:10:10:11:11:25:28:24:30,触角比为1.07。触须5节的相对长度是5:     

西藏的吸血蠓(双翅目:蠓科)

1973年至1976年,我所在参加中国登山队,和我院青藏高原综合科学考察队工作中,于西藏地区共采到吸血蠓3 属34 种,其中拉蠓属(Lasiohelea)1种,勒蠓属(Leptoconops)1新种,库蠓属(Culicoides)32种,包括6新种和国内新纪录7种。 模式标本均保藏于中国科学院动物研究所。     

吸血蠓类生殖行为和习性研究综述

双翅目长角亚国蠓科（Ceratopogonidae）小型昆虫中刺吸人畜血液的库蠓Culicoides、蠛蠓Lasioheea和细蠓Leptoconops3属统称为吸血蠓类,因其传播病毒、细菌、线虫、原虫和丝虫等多种病原体而具有重要的医学意义。为研究其媒介效能、生态和防治,迫待建立实验室驯养的媒介种群,吸血和交配则是实验室驯养吸血蠓的关键,建立生殖营养节律各个时期的指标又是生态学调查和模型设计的基础。鉴于此,国内外学者早已重视吸血蠓类重要种群生殖营养节律的研究,阐明了许多问题,并建立了某些研究方法,为媒介效能、生态和防治研究奠定了基础。本文…     

A NEW SPECIES OF LEPTOCONOPS MIDGE FROM WUDANG MOUNTAIN, HUBEI PROVINCE, CHINA (DIPTERA: CERATOPOGONIDAE)

Abstract Male and female adults of Leptoconops (Leptocmps) longicauda new species are described from material colleted from Wudang Mountain, Hubei Province, China.     

List of the type species of Ceratopogonidae (Diptera, Nematocera) deposited in the Entomological Collection of Instituto Oswaldo Cruz, Rio de Janeiro, Brazil]

A list of all type specimens of the Family Ceratopogonidae, present in the Entomological Collection of Instituto Oswaldo Cruz, Rio de Janeiro, RJ, Brazil is presented. This list includes the genera Bahiahelea, Culicoides, Dasyhelea, Downeshelea, Forcipomyia, Leptoconops, Mallochohelea, Monohelea, Neobezzia, Palpomyia and Sphaerohelea.     

Gonotrophic cycle of Leptoconops borealis (Diptera, Ceratopogonidae)]

Data are given concerning the gonotrophic cycle in fully engorged specimens of Leptoconops borealis, a mass blood sucker from the coast of the sea of Azov. In fully engorged females the repetition of gonotrophic cycles and degeneration of ovaries take place under the effect of Mermitoidea parasitism.     

Spatial and seasonal distribution of potential vectors of hemorrhagic disease viruses to peninsular bighorn sheep in the Santa Rosa Mountains of southern California.

Blood-feeding midges (Culicoides sp. and Leptoconops sp.) were sampled in the Santa Rosa Mountains, Riverside County, California (USA), to determine which species might be involved in the transmission of bluetongue and epizootic hemorrhagic disease viruses to peninsular bighorn sheep (Ovis canadensis cremnobates). Host-seeking midges were sampled with CO2-baited suction traps over a period of 30 mo. Nineteen species of Culicoides and seven of Leptoconops were collected. Five of the Culicoides sp. recovered are previously undescribed. The most abundant and widely distributed Culicoides sp. during spring (presumed virus transmission period to lambs) were C. (Selfia) brookmani, C. variipennis, C. (Avaritia) sp. (a new species near C. pusillus), and C. lahontan. Of these, C. brookmani (all elevations) and C. (Avaritia) sp. (elevations greater than 750 m) were common in the mountainous terrain inhabited by bighorn sheep. Culicoides variipennis, a vector of bluetongue virus in agricultural settings, and C. lahontan were numerous in sandy washes but were much less common in the mountains themselves. Leptoconops belkini and L. foulki were occasionally common in upper Deep Canyon in spring (April-June), while L. torrens was very abundant in the same area for 2 wk following heavy summer rains. Parity (an indicator of longevity and success in finding hosts and oviposition sites) in mountain areas was very low in C. variipennis (5%), low-moderate in C. (Avaritia) sp. (13%) and C. lahontan (21%), and relatively high in C. brookmani (40%). Vectorial capacity of Culicoides spp. for these hemorrhagic disease viruses is discussed, and it is suggested that species in addition to C. variipennis be considered as potential vectors of hemorrhagic disease viruses to desert bighorn sheep.     

Leptoconops nosopheris sp. n. (Diptera: Ceratopogonidae) and Paleotrypanosoma burmanicus gen. n., sp. n. (Kinetoplastida: Trypanosomatidae), a biting midge--trypanosome vector association from the Early Cretaceous

Leptoconops nosopheris sp. n. (Diptera: Ceratopogonidae) is described from a blood-filled female biting midge in Early Cretaceous Burmese amber. The new species is characterized by a very elongate terminal flagellomere, elongate cerci, and an indistinct spur on the metatibia. This biting midge contained digenetic trypanosomes (Kinetoplastida: Trypanosomatidae) in its alimentary tract and salivary glands. These trypanosomes are described as Paleotrypanosoma burmanicus gen. n., sp. n., which represents the first fossil record of a Trypanosoma generic lineage.     

Insects feeding on desert bighorn sheep, domestic rabbits, and Japanese quail in the Santa Rosa mountains of southern California.

Desert bighorn sheep (Ovis canadensis cremnobates), a domestic rabbit (Oryctolagus cuniculus), and Japanese quail (Coturnix japonica) were used as bait animals to collect blood-feeding flies in an area of active blue-tongue and epizootic hemorrhagic disease virus transmission. Precipitin tests were used to confirm the blood source where feasible. Eight species of Culicoides, members of the Leptoconops kerteszi group, Simulium spp., Anopheles franciscanus, and Stomoxys calcitrans were collected from the bighorn sheep. Feeding on the bighorn sheep by Culicoides brookmani (n = 25), C. variipennis (n = 6), C. cacticola (n = 1), and Simulium spp. (n = 3) was confirmed by precipitin testing. Primary species attacking the rabbit were C. brookmani, C. variipennis, and the L. kerteszi group. The quail were attacked primarily by members of the C. copiosus group and the L. kerteszi group.     

Ecology of the biting midge Leptoconops albiventris in French Polynesia. III. Influence of abiotic factors on breeding sites. Towards ecological control?

Abstract. Correspondance Analysis was used to determine the significant abiotic factors influencing the ecology of the immature stages of Leptoconops albiventris (Diptera: Ceratopogonidae). The breeding places required strict environmental conditions: fine and well-sorted sand, with low conductivity and humidity. However, the microdistribution of the immature stages within a breeding site does not depend on such factors. Modifying physical parameters in the larval breeding areas might be an important component in future ecological control programmes against L.albiventris populations.     

Ecology of the biting midge Leptoconops albiventris in French Polynesia. I. Biting cycle and influence of climatic factors

Abstract. The diurnal biting cycle of Leptoconops albiventris de Meijere (Diptera: Ceratopogonidae) is described from beaches of Nuku-Hiva, French Polynesia. Biting activity increased during the morning, diminished during the afternoon and was sufficiently intense to constitute a nuisance throughout the whole day. Correspondence Analysis indicated that climatic factors influenced biting activity. Activity was initiated by and positively associated with sunshine, whereas high temperatures, increased wind speed and rainfall were factors limiting activity. Decreased density of females during the dry season and their low capacity for dispersal were considered potentially advantageous with respect to control.