TACHYTRECHUS STUDIES (DOLICHOPODIDAE, DIPTERA)

1940 ◽  
Vol 72 (6) ◽  
pp. 111-115 ◽  
Author(s):  
F. C. Harmston ◽  
G. F. Knowlton
Keyword(s):  
Outer Edge ◽  
Black Hair ◽  
White Spot ◽  
Black Stripe ◽  
Apical Half

Male. Length 6.5 mm.; of wing 4.8 mm. Face narrow immediately below antennae, thickly covered with bright golden pollen; proboscis black; palpi dark brown bearing fine black hair and lightly dusted with yellowish pollen; antennae yellow; first joint large with a black stripe along upper outer edge and covered with short, stiff black hairs, second joint small, yellow, third joint small, decumbent, black on apical half; arista black, about one and one-half times length of face, lamella (fig. 4) at tip with an elliptical white spot on upper side near base; front black with bluish reflections, especially along the orbits; ocellar bristles black, hair near proboscis whitish.

scholarly journals Two new species of Euphaea Selys, 1840 (Odonata: Zygoptera: Euphaeidae) from northern Western Ghats, India

2021 ◽  
Vol 13 (5) ◽  
pp. 18200-18214
Author(s):  
Shriram Dinkar Bhakare ◽  
Vinayan P. Nair ◽  
Pratima Ashok Pawar ◽  
Sunil Hanmant Bhoite ◽  
Kalesh Sadasivan
Keyword(s):  
New Species ◽  
Western Ghats ◽  
Morphological Characters ◽  
Black Hair ◽  
Two New Species ◽  
Apical Half ◽  
Brownish Black ◽  
Distal Border ◽  
The Western Ghats ◽  
Male Genital

Two new species of the damselfly genus Euphaea Selys, 1840 (Odonata: Euphaeidae) are described from the Western Ghats of Satara District, Maharashtra, distinguished by their distinct morphology and coloration. E. thosegharensis Sadasivan & Bhakare sp. nov. is similar to E. cardinalis (Fraser, 1924), but is distinguished by the extensor and flexor surface of all femora black while all femora bright red in E. cardinalis; apical fourth of Hw black while apical half of Hw black in E. cardinalis; genae reddish-orange, black in E. cardinalis; a tuft of sparse stub black hair on either side of tergite of S9 while both S8 and S9 with tufts of long ventral hairs in E. cardinalis.  Male genital vesicle matt black, with distal border rounded angles, while vesicle black and hexagonal in shape with rounded angles in E. cardinalis and S9 twice the length of S10, while S9 and S10 of equal length in E. cardinalis. E. pseudodispar Sadasivan & Bhakare sp. nov., is very close to E. dispar (Rambur, 1842), but is differentiated easily by the absence of yellow patch on legs as in E. dispar; only apical fifth of Hw black; genae being yellowish-white, while black in E. dispar; male genital vesicle brownish-black & rhomboid-shaped and with no transverse rugosities while black with distal border rounded and with fine transverse rugosities in E. dispar; penis with single seta on each side while E. dispar has three pairs; sternite of S9 very prominently extending ventrally like a beak in comparison with E. dispar.  We have identified additional morphological characters useful in taxonomy of Euphaea of the Western Ghats for example, tufts of ventral hairs on terminal abdominal segments genital vesicle, penile structure of males and sternite of S9 in the males, and vulvar scales of females.  A taxonomic key to all known species of genus Euphaea of the Western Ghats is also provided.

scholarly journals A NEW BEE OF THE GENUS BOMBOMELECTA

1902 ◽  
Vol 34 (10) ◽  
pp. 267-267
Author(s):  
T. D. A. Cockerell
Keyword(s):  
Broad Band ◽  
White Hair ◽  
Black Hair ◽  
Clear Cut ◽  
Snow White ◽  
Apical Half ◽  
Black Head ◽  
Yellowish White

Bombomelecta Arizonica, n. sp.– ♀. Length about 11 mm., black; head, thorax and legs with dull white hair, having a faint yellowish tinge; black hair on cheeks, lower sides of face, labrum and mandibles; hair of pleura, except its upper part, black; a conspicuous band of black hair between the wings; hair of anterior legs long and black, but the tarsimore or less silvery, and the femora with a conspicuous tuft of white hair near the end behind; middle tibiæ and tarsi largely silvery-white on theouter side, but the white and black pubescence are mixed, so as to produce a speckled effect; hind tibiæ and tarsi similar, except that the tibiæ have the outer apical half black ; tegulæ large, black, punctured; wings pale brownish, nervures piceous; abdomen heart-shaped, with sparse black hair, and conspicuous clear-cut patches of white hair; first segment with a broad band of yellowish-white erect or suberect hairs, interrupted in the middle; first to fifth segements with lateral patches of appressed snow-white hair, that on the second segment broad and deeply notched behind.

New injurious Curculionidae from Africa (Col.)

1944 ◽  
Vol 35 (1) ◽  
pp. 43-48
Author(s):  
A. K. Marshall
Keyword(s):  
Outer Edge ◽  
Apical Margin ◽  
Apical Angle ◽  
Median Carina ◽  
Deep Incision ◽  
Dorsal Edge ◽  
Apical Half ◽  
Basal Width

♂♀. Derm black, with uniform dense grey scaling that has a coppery reflection.Head separated from rostrum by a narrow bisinuate stria; frons depressed below the level of the eyes and separated from them by a deep incision on each side, obliquely striolate and with a deep median sulcus; eyes moderately convex, extended sharply backwards for about one-third of their length, the orbit not projecting on the hind margin. Rostrum very slightly longer than its basal width, widest at base, gradually narrowing for two-thirds its length and thence more rapidly; dorsum broadly depressed, with longitudinally confluent punctures and a fine median carina. Antennae piceous; scape slightly exceeding hind margin of eye; funicle with joint 1 nearly twice as long as 2,3–7 subequal, about as long as broad and slightly widening distally. Prothorax nearly twice as broad as long, unusually flat, being only gently convex transversely, widest at the strongly arcuate base, the angles of which project laterally, with the sides almost straight and rapidly converging anteriorly, the apical margin being deeply sinuate on each side behind the eyes; dorsum flat longitudinally in the middle, densely squamose, each scale covering a minute granule. Elytra ovate, broader in ♀, widely sinuate at base, which is marginate, with the lateral angles projecting outwards and forwards, and the sides sinuate behind the angles; the dorsal outline moderately convex, sloping at the base; the shallow striae containing close deep punctures, which show through the scaling though partly covered and disappear behind, where the striae become deeper; intervals almost flat, with minute inconspicuous recumbent setae. Legs piceous, with dense concolorous scaling and their lower edges with a fringe of stiff erect setae; front tibiae compressed, with the outer edge carinate and the external apical angle produced laterally, the spines on the apical margin much reduced; hind tibiae with the inner face flattened and sinuate on the apical half, the corbels bare and ascending the dorsal edge more than usual, with the upper end angulate. Venter squamose laterally, but clothed elsewhere with dense stiff suberect setae.

scholarly journals A FEW NEW SPIDERS

1896 ◽  
Vol 28 (3) ◽  
pp. 62-65
Author(s):  
Nathan Banks
Keyword(s):  
Outer Edge ◽  
White Spot ◽  
Outer Side ◽  
Side View ◽  
Lower Side ◽  
White Band ◽  
Moderate Length ◽  
Short Tube

Length, 3.6 mm.; ceph.: long, 1.4 mm.; broad, I mm. Cephilothorax, sternum, femora i. and ii., blackish; rest of legs i. and ii. pale yellowish; legs iii. and iv. yellow-brown, the femora scarcely darker; abdomen black above, with a narrow white band across the middle and a white spot on each anterior lower side; venter pale. Cephalothorax broad, in ♂ a little narrower; posterior row of eyes procurved, the P. M. E. oval, fully their diameter apart, and about as far from the P. S. E.; anterior row strongly procurved, the A. M. E. fully their diameter apart, and about as far from the larger A. S. E. Sternum oval, pointed behind; legs of moderate length, femora i. and ii. stouter than others, femora iii. slightly excised before the tip behind. Abdomen not constricted, quite broad, somewhat depressed, epigynuin appearing much like M. montana, Em., but the openings are farther apart and more oblique. Tibia of ♂ palpus has short projection at tip on the outer side; the bulb is triangular in side view, the red parallel marks are along the outer edge; near the middle is a short tube.

scholarly journals DESCRIPTION OF A NEW SPECIES OF LIMENITIS

1880 ◽  
Vol 12 (12) ◽  
pp. 246-251
Author(s):  
W. H. Edwards
Keyword(s):  
New Species ◽  
White Spot ◽  
Outer Side ◽  
Short Side ◽  
Black Stripe ◽  
Black Triangle ◽  
The Third ◽  
Black Patch ◽  
White Spots ◽  
A New Species

Limenitis Eros.Allied to Disippus, wings less produced, and in female very broad.Male—Expands about 2.6 inch.Upper side very dark red-brown; hind margins bordered broadly with black, costal margins narrowly; inner margin of primaries black to the submedian nervure ; all nervures and branches black, and narrowly edged with same color ; against the end of cell on primaries a long subtriangular black patch, its short side resting on costa, its apex prolonged into a stripe which reaches the border of hind margin below first branch of median ; beyond the disk on secondaries a transverse curved narrow black stripe from margin to margin ; within the borders and near their inner edges a common series of white spots, which on secondaries are small and more or less obsolete ; on the black triangle three white spots in line, the two nearest costa large, the third minute ; a white spot at the origin of upper subcostal interspace and a white streak on outer side of costal nervure opposite the triangle and a little way toward base ; fringes black, white in the middle of each interspace.

Quasi-Periodic Oscillations in Dwarf Novae

1979 ◽  
Vol 46 ◽  
pp. 77-88
Author(s):  
Edward L. Robinson
Keyword(s):  
Binary Systems ◽  
Outer Edge ◽  
Light Curves ◽  
Close Binary ◽  
Bright Spot ◽  
Dwarf Novae ◽  
Periodic Oscillations ◽  
High Frequencies ◽  
Short Period ◽  
Typical Time

Three distinct kinds of rapid variations have been detected in the light curves of dwarf novae: rapid flickering, short period coherent oscillations, and quasi-periodic oscillations. The rapid flickering is seen in the light curves of most, if not all, dwarf novae, and is especially apparent during minimum light between eruptions. The flickering has a typical time scale of a few minutes or less and a typical amplitude of about .1 mag. The flickering is completely random and unpredictable; the power spectrum of flickering shows only a slow decrease from low to high frequencies. The observations of U Gem by Warner and Nather (1971) showed conclusively that most of the flickering is produced by variations in the luminosity of the bright spot near the outer edge of the accretion disk around the white dwarf in these close binary systems.

Comparision of two fluoride varnishes for controlling white spot lesions. Randomized clinical trial

2017 ◽  
Vol 16 (1) ◽  
Author(s):  
Jesús Alberto Luengo - Fereira
Keyword(s):  
Clinical Trial ◽  
Randomized Clinical Trial ◽  
White Spot ◽  
Controlled Clinical Trial ◽  
White Spot Lesions ◽  
Randomized Controlled Clinical Trial ◽  
Chi Square ◽  
Randomized Controlled ◽  
Anterior Teeth ◽  
The Mean

Objective: To compare two fluorinated varnishes for the control of white spot lesions.Material and Methods: A randomized controlled clinical trial was conducted. A total of 103 active whitespot lesions on permanent upper anterior teeth from 24 patients, aged 7 to 9 years were randomly assigned totwo groups, G1: Duraphat® (n=52) and G2: DuraShield® (n=51). Weekly applications were perform for fourconsecutive weeks. Fifth week the dimension, regression and activity of the lesions were evaluated. Student’sT test, Wilcoxon Ranks and Chi square were used at 5% significance. Results: At the end of the study, the lesion reduction was observed in 69.7%, finding significant differences(p<0.05) in the mean of the initial and final dimensions in general (2.74 mm to 1.91 mm) and in each group, G1(2.84 mm to 2.03 mm), G2 (2.64 mm to 1.78 mm). In the activity of the lesions, it was found in the G1, 12 active and6 inactive lesions; while in G2, there were 14 active and 29 inactive; these differences were significant (p<0.05). Conclusions: The two evaluated products showed similar clinical efficacy in the remineralization of activewhite spot lesions after 4 weeks of therapy.

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