A new species of Acyrthosiphon (Homoptera, Aphididae) from Primula in Britain

Acyrthosiphon auriculae sp.n. is described from Primula (garden auricula) in Britain. It is close to the A.malvae group but has only eight chromosomes (2n - ♀). Results from rearing experiments using excised leaf cultures suggest that auriculae has strong host-plant preferences; it may have originated from a montane region in Europe.     

Two new species of aphids (Homoptera: Aphididae) from North-west India

Two new aphids viz. Prociphilus (Stagona) himalayaensis sp. nov. infesting the roots of Pinus excelsa and an unidentified plant and Capitophorus tricholepidis sp. nov. infesting Tricholepis furcata, collected from Simla Himalayas and Kumaon Himalayas, respectively, of the North-west India are described.     

A new genus and two new species of aphids (Homoptera: Aphididae) from north-west India

A new aphid genus Raychaudhuriella and two new specices viz. Raychaudhuriella myzaphoides and Rhopalosiphoninus sensoriatus are described from Himachal Pradesh, north-west Himalaya. The affinity of Raychaudhuriella gen. nov. is drawn with Aspidophorodon Verma, Cavariela del Guercio, Myazphis van der Goot, Tricaudatus Narzikulov and Vesiculaphis del Guercio. Figures and biometrical data of the new species have been provided.     

New species of the aphid tribe Macrosiphini (Homoptera,Aphididae, Aphidinae) from Kazakhstan

Two new species of the genera Uroleucon Mordvilko, 1914 and Pleotrichophorus Börner, 1930 are described from Kazakhstan. Uroleucon dzhungaricum sp. n. feeding on Senecio nemorensis L. (Asteraceae) in the Dzhungar Ala Tau is closely related to U. minor (Börner, 1940). Both these species differ from the closely related U. solidaginis (Fabricius, 1794) in a smaller length ratio between the processus terminalis and the 3rd antennal segment (0.8–1.0 versus 1.0–1.5). The new species differs from U. minor (Born.) in a greater number of the secondary rhinaria on the 3rd antennal segment of the apterous viviparous females (21–37 versus 15–21), in a fewer number of hairs on the cauda (10–16 and 15–23), and in the host plant. Pleotrichophorus ugamicus Kadyrbekov, sp. n. feeding on Artemisia santolinifolia Turcz. is described from the Sairam-Ugam Natural Park (Southern Kazakhstan). The new species is similar to P. glandulosus (Kaltenbach, 1846) and P. achilleae Holman, 1965. Pleotrichophorus ugamicus sp. n. differs from these species in the length ratio of the processus terminalis to the base of the 6th antennal segment (4.1–5.0 versus 5.0–9.0 and 5.1–6.2), in that of the ultimate rostral segment to the 2nd segment of the hind tarsus (0.68–0.76 versus 0.80–0.97 and 0.80–0.90), and in the host plant. This species differs from P. glandulosus in the ratio of the length of dorsal hairs on tergites I–V to the basal diameter of the 3rd antennal segment (1.0–1.2 and 1.4–1.7). In addition, the new species differs from P. achilleae in the length ratio of the 3rd antennal segment to the 6th segment (0.56–0.66 versus 0.70–0.87) and to the processus terminalis (0.67-0.82 versus 1.39–1.80), as well as in the shape of the dorsal hairs. A key to the Palaearctic species of the genus Pleotrichophorus is presented.     

Cytogenetics of two species of Euceraphis (Homoptera,Aphididae)

Somatic cell divisions, spermatogenesis, and the prophase stages of primary oocytes, are described for two species of birch aphid, Euceraphis betulae (Koch) and E. punctipennis (Zetterstedt). Females of E. betulae have two autosome pairs, two pairs of X-chromosomes of different lengths, and two B-chromosomes. Females of E. punctipennis have the same number of X-chromosomes and B-chromosomes as E. betulae, but only a single pair of autosomes. The sex determination system is X₁X₂0. E. punctipennis males sometimes have only one B-chromosome. In the spermatogenesis of E. betulae, pairing of homologous autosomes occurs in early prophase I, but no evidence was found of chiasmata or end-to-end alignment of homologues. Instead, homologues remain closely aligned in parallel as they condense into metaphase, and anaphase I separates the products of pairing in a strictly reductional manner. The two unpaired X-chromosomes and both B-chromosomes are stretched on the anaphase I spindle and all four pass into the larger secondary spermatocyte. The second division is equational. The B-chromosomes thus show accumulation in spermatogenesis, which must be compensated in some way by an elimination mechanism in oogenesis. Meiosis of E. punctipennis is highly anomalous. The two autosomes pair but separate again in early prophase I, then one homologue becomes heterochromatic and is apparently rejected from the late prophase nucleus. A single, equational maturation division follows. In female meiosis I, both species show highly characteristic diplotene figures with multiple chiasmata, the B-chromosomes remaining unpaired. These results are discussed in relation to previous work on aphid cytogenetics.     

A new species of Megoura (Hemiptera,Aphididae) from Japan

A new species of the genus Megoura, M. lathyricola sp. n., was collected from Lathyrus japonicus subsp. japonicus (Leguminosae) in seashore areas of northern and southern Japan. This species is described and illustrated, and a revised key to the identification of the world species of Megoura is presented.     

A new genus and species of dalodesmid millipede from New South Wales,Australia (Diplopoda,Polydesmida, Dalodesmidae)

Cernethia inopinata gen. n., sp. n. is described from highland New South Wales. Like other dalodesmids the new species has numerous sphaerotrichomes on the legs of adult males, but Cernethia inopinata sp. n. shares several character states with Tasmanian species in the genera Noteremus Mesibov, 2009, Paredrodesmus Mesibov, 2003 and Procophorella Mesibov, 2003, which lack sphaerotrichomes and have not yet been assigned to family within the suborder Dalodesmoidea.     

Review of Eumyzus Shinji (Homoptera: Aphididae) with descriptions of two new species from the Indian region

Abstract. The genus Eumyzus Shinji is reviewed. Two new species, E.hydrangi sp.n. infesting Hydrangea scandens and E.pruni sp.n. infesting Prunus cornuta , are described from the Garhwal range of northwest Himalaya. A key to the apterous viviparous females of Eumyzus spp. is given.     

美盾蚧属一新种记述（同翅目：蚧总科，盾蚧科）

本记述采自安徽黄山寄生于竹类上的美盾蚧属一新种。模式标本保存于安徽省黄山市林业局。     

A new species of Eriopeltis Signoret (Homoptera: Coccidae) from Britain

Abstract. Eriopeltis varleyi from Wytham in Britain is described as new. The adult female and male are described and all stages are illustrated. Keys are provided for the identification of all known species of Eriopeltis, and to the males of the three species known from Britain. E. varleyi is univoltine and apparently specific to Brachypodiumpinnatum (L.) Beauv. Males and females occur in equal proportions, but many more males were produced when populations were reared under very warm dry conditions in the laboratory. The population studied at Wytham was parasitized by a number of species of chalcid wasps and a chamaemyid fly egg predator.     

A new species of Strophingia Enderlein (Homoptera: Psylloidea) from Britain

A new species of Strophingia is described from males and females taken in Dorset and Hampshire. Its separation from Strophingia ericne is discussed, and notes on the host plants and geographical range of the two species are included.     

Key to Indian species of Periphyllus including four new species and hitherto unknown morphs from North-west Himalaya (Homoptera: Aphididae)

ABSTRACT. Four new species of Periphyllus; P.aceriphaga Chakrabarti & Mandal, P.caesium Chakrabarti & Saha, P.garhwalensis Chakrabarti & Mandal and P.pallidus Chakrabarti & Saha are described. Hitherto unknown apterous viviparous female of P.villosii Chakrabarti and four dimorphs are also recorded. Keys to distinguish the species of apterous viviparous females, alate viviparous females, alate males and dimorphs are provided.     

A new species of Dysmicoccus Ferris (Homoptera: Pseudococcidae) from India

Dysmicoccus williamsi sp.n. is described and illustrated. A key is provided for the indentification of Oriental species of Dysmicoccus Ferris.     

日仁蚧属一新种记述（同翅目：仁蚧科）

本文记述采自安徽省祁门县牯牛降自然保护区寄生于箭竹Sinarundinaria nitida(Mitf.)Nakai上的日仁蚧属Nipponaclerda一新种,箭竹日仁蚧Nipponaclerda triumpha,sp.nov.     

Chromosome numbers of parthenogenetic females of fifty-five species of Aphididae (Homoptera) new to cytology

The numbers of somatic chromosomes of 55 species of Aphididae are presented. Squashed embryos from apterous viviparous females are stained with crystalviolet. Some relationships between aphid chromosomes and aphid systematics are discussed.