scholarly journals SOME NEW NORTH AMERICAN SPIDERS

1900 ◽  
Vol 32 (4) ◽  
pp. 96-102 ◽  
Author(s):  
Nathan Banks
Keyword(s):  
North American ◽  
Basal Half ◽  
Apical Half ◽  
Eye Region

Sergiolus bicolor, n. sp.Length, ♀, 8 mm. Cephalothorax and legs pale reddish-yellow, mandibles and sternum scarcely darker, basal half of abdomen pale gray, apical half and spinnerets jet black, the line separating the two slightly convex in front; venter pale gray except the apical two-fifths, which is black, but broadly indented by the gray in the middle. Cephalothorax rather slender, about one and three-fourths as long as broad, plainly longer than patella plus tibia IV., not much narrowed in front, no trace of a dorsal groove. Posterior eye-row plainly recurved, the P. M. E. round, about twice their diameter apart, and about as far from the scarcely larger P. S. E. Anterior eye-row much shorter than posterior, nearly straight, the A. M. E. slightly smaller than P. M. E., more than their diameter apart, and rather nearer to the slightly larger A. S. E., several stiff black bristles in eye-region.

New injurious Curculionidae (Col.)

1931 ◽  
Vol 22 (3) ◽  
pp. 417-421 ◽  
Author(s):  
Guy A. K. Marshall
Keyword(s):  
Median Carina ◽  
Basal Half ◽  
Transverse Stria ◽  
Apical Half ◽  
Basal Width

Aedophronus echinatus, sp. n. (Pl. xxi, fig. 2).Derm black, with dense brown scaling, usually with an indefinite mottling of darker and paler scales ; the inflexed margins of the elytra fuscous.Head not very convex, with the median stria extending to the vertex and the anterior transverse stria slightly curved ; the infra-ocular margin much narrower than the base of the scape and not projecting ; the setae short, stout and curved backwards ; the eyes comparatively large, highest much behind the middle, and with the hind margin devoid of scaling. Rostrum longer than the head (5·5 : 4), much shorter than its basal width (5·5 : 7·5), narrowed in front, straight at the sides, with a shallow impression on the apical half and with no median carina ; the marginal carina of the epistome obtuse but distinct. Prothorax transverse (3·5 : 6), strongly rounded at the sides, widest at the middle, subtruncate at the apex, which is only slightly narrower than the base ; the dorsum with an abbreviated median stria on the basal half and bearing on the disk short curved setae like those on the head, the lateral ones much longer, stout, straight and pointed (when unbroken), the longest being about as long as the scape.

scholarly journals DESCRIPTIONS OF NEW SPECIES OF NORTH AMERICAN HETEROCERA, WITH NOTES

1887 ◽  
Vol 19 (8) ◽  
pp. 145-147
Author(s):  
Henry Edwards
Keyword(s):  
New Species ◽  
North American ◽  
Bright Orange ◽  
Golden Yellow ◽  
Basal Half ◽  
Internal Angle

Allied to F. denudata, but differing greatly in important particulars, Fore wings are bright shining seal-brown, deep orange along the costa for the basal half. At the middle of the wing at base in a narrow denuded space, and the internal angle is also devoid of scales, but much more narrowly so than in denudata. The transparent space is golden yellow in shade. Lower wings transparent golden yellow, with very bright but dark opalescent reflection. The margin and spot at the extremity of cell dark brown. Antennæ bluish black, orange brown at the base. Head, disk of thorax, and the upper portion of the abdominal segements, black. Eyes black, palpi with black at their base. Front of head, collar, sides and base of thorax, posterior edges of abdominal segments bright orange. Feet and legs wholly orange without any black bands.

scholarly journals Effect of CO2 treatment on dormancy duration, sprout growth and sugar content in two potato cultivars: Short communication

2011 ◽  
Vol 32 (No. 2) ◽  
pp. 68-73
Author(s):  
R. Ezekiel ◽  
B. Singh
Keyword(s):  
Short Communication ◽  
Sugar Content ◽  
Fold Increase ◽  
Potato Cultivars ◽  
Total Sugars ◽  
Apical Buds ◽  
Basal Half ◽  
Apical Half ◽  
Subsequent Storage ◽  
Sprout Growth

Dormant tubers of two potato cultivars Kufri Jyoti and Kufri Chandramukhi were treated for 7 days with 5, 10, 15 and 20% CO<sub>2</sub> concentrations at 18 &plusmn; 1&ordm;C and 90&ndash;95% RH, and compared with GA treated tubers and with untreated tubers serving as control. During subsequent storage at the same temperature and RH, dormancy duration was reduced by 20 days with CO<sub>2</sub> treatment and by 35 days with GA treatment. In Kufri Jyoti, GA treatment caused 2.6 fold increase in the concentration of reducing sugars and 0.8 fold increase in total sugars in the apical half of the tubers leading to early release of dormancy in apical buds but this increase in sugar content was not observed in the basal half where the buds remained dormant. &nbsp;

Braconidae : Notes and new Species

1931 ◽  
Vol 22 (1) ◽  
pp. 75-82 ◽  
Author(s):  
D. S. Wilkinson
Keyword(s):  
New Species ◽  
Posterior Margin ◽  
The Other ◽  
Lateral Carina ◽  
Median Carina ◽  
Other Hand ◽  
Basal Half ◽  
Apical Half

Rhaconotus mahensis, sp. n.♀♂. Black ; scape and all legs red testaceous ; ovipositor bright red ; flagellum red-brown, possibly rather darker at apex ; wings hyaline, the setae with a distinctly fulvous tinge, and the stigma hyaline (at least not darkened).♀♂. The integument is not coriaceous throughout, and is only sparsely clothed with setae (except on the flagellum and possibly the legs). Head smooth and highly shining, not coriaceous, impunctate, the vertex and occiput almost entirely devoid of setae ; antennae longer than head, thorax, and abdomen together ; flagellar joints in ♀ 29–33, in ♂ 26–28. Thorax : mesonotum dully shining, coriaceous ; the notauli well marked, joining slightly before reaching the posterior margin of the mesonotum ; propodeon with five longitudinal carinae, one in the middle and two on each side, these latter rather more closely placed to each other than to the median carina ; this median carina is discernible as such only in the basal half of the propodeon, thereafter becoming lost amongst the reticulate wrinkles with which the apical half of the propodeon abounds ; the lateral carinae, on the other hand, are discernible more or less throughout their length, particularly the inner pair which can generally be traced to the median apex of the propodeon where they join each other ; the integument of the basal half of the propodeon coriaceous on each side of the median carina as far as the first lateral carina, thereafter wrinkled as in the apical half.

SOME NEW CANADIAN CHRYSOMELIDAE

1938 ◽  
Vol 70 (2) ◽  
pp. 35-38 ◽  
Author(s):  
W. J. Brown
Keyword(s):  
Basal Segment ◽  
Body Form ◽  
Tarsal Segment ◽  
Basal Half ◽  
Apical Half

Length 3.7 mm.; width 1.7 mm. Body form as in palustris Blatch. Black; the elytra with a greenish lustre, not at all bluish: the basal half of the head, antennae, and legs pale red; the basal segment and four terminal segments of each antenna distinctly infuscate; femora and the apical half of each terminal tarsal segment heavily infuscate.

The Role of Transpiration in Phototropism of the Avena Coleoptile: Evidence of Stomatal Control of the Phototropic Response

1994 ◽  
Vol 21 (3) ◽  
pp. 359 ◽  
Author(s):  
GI Mcintyre
Keyword(s):  
Positive Curvature ◽  
Tritiated Water ◽  
Petroleum Jelly ◽  
Phototropic Response ◽  
Avena Coleoptile ◽  
Nail Polish ◽  
Basal Half ◽  
Apical Half ◽  
Effect Of Light

The hypothesis that phototropism is caused by the effect of light on transpiration seemed at variance with the observation that Avena coleoptiles respond phototropically while submerged in water. Further investigations, however, provided evidence that phototropism of submerged coleoptiles may be caused by the light-induced promotion of stomatal guttation. Evidence of guttation by submerged coleoptiles was provided by measuring tritium accumulation in a water jacket surrounding the coleoptile when tritiated water (THO) was supplied to the roots. It was shown that the application of nail polish to the coleoptiles induced almost immediate guttation from the stomata. This response, measured quantitatively by image analysis, occurred predominantly on the irradiated side of coleoptiles previously stimulated phototropically with blue light while submerged in water, and was much reduced and more uniformly distributed when the phototropic response had been eliminated by saturating the water with CO2. Small curvatures exhibited by coleoptiles kept in the dark at high humidity were almost invariably towards the side from which guttation occurred from the apical (hydathode) stomata. Application of petroleum jelly (Vaseline) to the stomata on the illuminated side of coleoptiles stimulated phototropically in moist air induced a negative curvature in the apical half of the coleoptile and reduced the positive curvature in the basal half. In contrast, vaseline applied to the middle of one of the broad sides of the coleoptile, where no stomata occur, had relatively little effect. These results are consistent with the hypothesis that phototropism of the Avena coleoptile is caused by light-induced loss of water from the stomata. It is also postulated that the mechanism is essentially the same whether water is lost by transpiration or guttation.

scholarly journals A CONTRIBUTION TO THE KNOWLEDGE OF NORTH AMERICAN SYRPHIDÆ

1896 ◽  
Vol 28 (4) ◽  
pp. 87-101 ◽  
Author(s):  
W. D. Hunter
Keyword(s):  
North American ◽  
Apical Half ◽  
Black Band

Male.—Eyes contiguous for about two thirds their width above, densely long, white pilose, with a sharply defined vertical black band about one-fifth their width; above, the two bands are confluent. Occiput shining olivaceous, white pilose. Ocellar area with a tuft of ferrugineous pile. Spot above the antennæ bare, shining black. Face shining black, except the tip of the indistinct tubercle, which is opaque; covered, except an indistinct median stripe, and more densely below, with abundant long light yellowish pile; very indistinctly concave below the antenné. Cheeks shining olivaceous, except ati anterior velvety cross-band and an indistinct spot below the lowest margin of the eyes; long yellow pilose. Palpi clavate, testaceous at base, apical half black.

A Revision of the Indo-Australian Species of the Genus Apanteles (Hym. Bracon.).—Part II

1928 ◽  
Vol 19 (2) ◽  
pp. 109-146 ◽  
Author(s):  
D. S. Wilkinson
Keyword(s):  
Australian Species ◽  
Basal Half ◽  
Apical Half ◽  
Wing Veins

39. Apanteles taeniaticornis, sp. n.♀. Black; the four front legs (except their coxae), the basal third of the hind tibiae, red testaceous; hind femora red to red-black; basal ventrites and the lateral membranous margins of the 1st tergite pale reddish; palpi and hind tibial spurs white; the 9th to the 12th flagellar joints inclusive entirely cream-white; the apical half of the 8th, and the basal half of the 13th joint, rather pale; ovipositor red; stigma and wing veins dark brown; wings infumated.

The second representative of the genus Polididus (Hemiptera: Heteroptera: Reduviidae) in Southeast Asia, with partial redescription of P. armatissimus

Zootaxa ◽  
2008 ◽  
Vol 1740 (1) ◽  
pp. 45
Author(s):  
TADASHI ISHIKAWA ◽  
KETUT SUMIARTHA ◽  
SHÛJI OKAJIMA
Keyword(s):  
New Species ◽  
Southeast Asia ◽  
Female Genitalia ◽  
Wing Dimorphism ◽  
Male And Female ◽  
Brownish Yellow ◽  
Basal Half ◽  
Apical Half ◽  
First Time ◽  
A New Species

A new species of the harpactorine genus Polididus is described from Flores, Indonesia, on the basis of female specimens under the name P. dimorphopterus sp. nov. as the second representative of the genus in Southeast Asia. This species is unique among the congeners in showing wing dimorphism and is easily recognized by the pronotum dark brown to blackish with a pair of brownish yellow longitudinal stripes, setiferous spines on the pronotal humeri, scutellum and laterotergites IV to VII blackish in the basal half and brownish yellow in the apical half, the femur of each leg blackish in the apical fifth, the mesoand metatibiae lacking setiferous spine, the metatibia with a blackish narrow annulation subbasally. Polididus armatissimus is recorded from Bali for the first time, with descriptions and illustrations of the male and female genitalia.

A method to collect isolated myocytes and whole tissue from the same heart

2007 ◽  
Vol 293 (3) ◽  
pp. H2004-H2006 ◽  
Author(s):  
Yue-Feng Chen ◽  
Suleman Said ◽  
Scott E. Campbell ◽  
A. Martin Gerdes
Keyword(s):  
Cardiac Myocytes ◽  
Heart Tissue ◽  
Adult Rats ◽  
Cut Edge ◽  
Basal Half ◽  
Apical Half ◽  
Isolated Cardiac Myocytes ◽  
Basal Portion ◽  
Isolated Myocyte ◽  
Whole Heart

A technique for isolation of cardiac myocytes and collection of whole heart tissue from individual hearts of adult rats is described in this study. After excision of the apical half of the left ventricle (LV) and cauterization of the cut edge, aortas were cannulated and high-quality isolated cardiac myocytes were collected after collagenase perfusion of the basal portion. Myocyte dimensions from the basal portion of cauterized and noncauterized hearts from matching rats were identical. Additionally, myocyte dimensions from the basal and apical halves of the LV were compared with the use of whole heart-isolated myocyte preps. No regional differences between basal and apical LV myocyte size were found. Therefore, this cauterization method can be used to collect isolated myocytes from the basal half and whole heart tissue from the apical half, with each half being representative of the other with respect to myocyte dimensions.

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