Setae Research Articles

Electronmicroscope studies of crayfish setae (Austropotamobius pallipes)

Elektronen- bzw. rastermikroskopisch wurden die Borsten eines dekapoden Krebses,Austropotamobius pallipes, untersucht und festgestellt, das alle terminal oder subterminal eine Offnung (Pore) aufwiesen.

Synonymy and variation of some species of the ant genus Anochetus.

tapered distally, unbarbed. Dimensions (in mm): preocular width, 0.26-0.30; temple width, 0.37-0.39; head length, 0.29-0.33; prothorax width, 0.29-0.31; metathorax width, 0.40-0.43; total length, 1.75-1.77; genitalia length, 0.67-0.70. Both sexes of C. emersoni are readily separable from all other known owl Colpocephalum by the head shape, the long outer occipital setae, the larger number of marginal pronotal setae, and the presence of an terior tergal setae on abdominal segments I-VIII. Additionally, the anal chaetotaxy of the female and the genitalia of the male are most distinctive. Material examined: 8 females, 3 males from P. badius, Subang, Malaya, 17 August 1962, H. E. McClure. Holotype female, alio type male at the United States National Museum; 4 female, 1 male para types in the collection of Dr. K. C. Emerson; 2 female, 1 male para types at the University of Minnesota; 1 female paratype at the British Museum (Natural History). LITERATURE CITED

Isolation of Earthworm Setae by Use of Histophagous Protozoa

Isolation of Earthworm Setae by Use of Histophagous Protozoa

POSTEMBRYONIC GROWTH CHANGES IN THE ISOPOD PENTIDOTEA RESECATA (STIMPSON) WITH REMARKS ON THEIR TAXONOMIC SIGNIFICANCE

In an attempt to find constant characteristics which may be relied upon as specifically diagnostic in the marine isopod Pentidotea resecata, the following features proved to be especially significant constant features regardless of the size of the specimen: (1) structural interrelationships of the frontal laminae, (2) epimeral plate length in relation to the length of the lateral border of the corresponding perion segment, (3) the character of the setation and certain features of peraeopod morphology, (4) general body shape.Features showing numerical increase which was found to be directly proportional to the size of the animal and thus believed to be of very limited taxonomic utility include: (1) number of segments to the flagellum of the second antennae, (2) number of segments to the palp of the maxilliped, (3) number of setae of the maxilliped and of the peraeopods.It would seem to be necessary, in view of the findings, to reexamine the status of species and genera which owe their existence exclusively or in part to characteristics here shown, in this species at least, to be variable in different age groups.One species Idothea rufescens Fee, apparently based on immature specimens, is considered a synonym of Pentidotea resecata (Stimpson).

A new Species of Apanteles (Hym. Brac.) bred from Carposina adreptella attacking Raspberry in New Zealand

Apanteles carposinae, sp. n.♀. Black; the front legs entirely (save for the black feet and for some occasional slight darkening on femora above and below, on tibiae above, and on coxae and tarsi), middle legs entirely (save for the black feet and for femora darkened above and below and for some occasional slight darkening on tibiae and coxae), hind coxae at apex below, hind trochanters and trochantines, hind femora (save above and below extensively), hind tibiae, hind tarsi (save for black feet and some darkening), and palpi, red testaceous; tibial spurs pale; wings infumated evenly throughout and the setae coloured; stigma, metacarp, and all veins, brown; stigma uniformly opaque.♂. Black; front coxae (save at base), front trochanters and trochantines, front femora (save for darkening above and below, which is sometimes strong), front tibiae (save for strong darkening above), front tarsi (save for some darkening and the black feet), middle coxae (save at base or even basal half), middle trochanters and trochantines largely, middle femora (save for extensive strong darkening above and below), hind coxae at apex below to some extent in the lighter but not in the darker examples, hind femora (save for extensive strong darkening above and below), and palpi, red testaceous; the four posterior tibiae and tarsi, and the hind trochanters and trochantines, largely darkened throughout save perhaps in an occasional lighter example; tibial spurs pale; wings infumated evenly throughout and the setae coloured; stigma, metacarp, and all veins, brown; stigma uniformly opaque.

A new Species of Apanteles (Hym. Brac.) bred from Myelois ceratoniae attacking Carobs in Cyprus

Apanteles myeloenta, sp. n.♀. Black; the front femora in the apical half or third, the front tibiae and tarsi (save for the black feet), middle femora in about the apical fifth or sixth, middle tibiae (save commonly for some darkening in the apical two-thirds above), middle tarsi (save for the feet and last joint, which are black), and the hind tibiae in about the apical fifth or sixth, red testaceous; tegulae testaceous; palpi pale; tibial spurs white; wings hyaline, the setae apparently coloured; trie costal veins in the basal half more or less colourless, as are all the wing-veins; costal veins apically, and the borders of the stigma, light brown or brown, the metacarp brown or dark brown; stigma otherwise hyaline.

On two Braconids (hym.) bred from Economic Hosts

♀ ♂. Black; head (including palpi), all legs (including the coxae, but excluding the feet which are strongly darkened), tegulae, and certain portions of the basal joint of the scape, pale red testaceous; the lateral membranous portions of the 1st and 2nd tergites, and the basal ventrites, very pale red testaceous; the plate of the 1st tergite only weakly coloured, and of the 2nd not much more strongly so, both probably more rightly describable as pale red testaceous also; 3rd tergite (except laterally and right across apex) also weakly coloured; the flagellum, and certain portions of the scape, brown; wing-veins and stigma brown, and the setae of the wings coloured; apical third of stigma commonly appearing to be to some extent hyaline.

THREE NEW SPECIES OF SCOLYTIDAE (COLEOPTERA)

Length 2.5 mm., width 1.1 mm. Pronotum and elytra equal in width, sides straight and parallel, elytra arcuately narrowed on the caudal third, very broadly obtuse behind; dark reddish brown; pubescence sparse, erect and yellow, more evident about the apex of the pronotum and on the elytral declivity.The head has the frons broadly, feebly convex, the median line feebly carinate with a narrow, transverse epistomal impression, the entire surface subopaque from minute reticulations, marked with sparse, coarse, shallow punctures with minute setae on the caudal half, more finely and closely granulatepunctate in front, the punctures bearing long yellow hairs erect on the frons, longer and recumbent from the transverse impression, forming the epistomal fringe, the epistomal margin smooth, narrow and feebly elevated; the eyes with a deep triangular emargination.

A NEW SPECIES OF STAPHYLINUS (COL. STAPHYLINIDAE)

The species here described somewhat superficially resembles Staphylinus cinnamopterus Grav., yet appears distinct and to be hitherto uncharacterized. In admiration of Professor J. H. McGregor of Columbia University, and in appreciation of kindnesses tendered me, I propose to name this new form:Staphylinus macgregori n. sp.Habitus nearly as in cinnamopterus but larger in size and rather more robust; piceous, the elytra fusco-ferrugineus, the legs fulvo-ferrugineus ; pubescence inclined, on the head, thorax, and elytra of a rusty hue and with few erect, brown setae, on abdomen fusco-piceous pubescence intermixing with fewer rusty-colored hairs and an abundance of dark setae; anterior tarsi broadly dilated in both sexes ; head slightly narrower than prothorax, widest at basal fourth thence gradually narrowing anteriorly, hind angles obtusely prominent, punctures round and ocellate throughout, close-set but clearly separated by shining interspaces, sparser anteriorly; mandibles longer and more slender than in cinnamopterus, the two inner teeth much less prominent and more poorly developed; antennae piceous to fuscopiceous, a third longer than head; prothorax but slightly wider than head, truncate at apex, rounded at base, punctures ocellate, more elongate at the sides than those of head and somewhat larger, smaller and more closely set than in cinnamopterus but separated by shining interspaces, the median line evident, polished, but very narrow throughout, in places ill-defined or obliterated; scutellum velvety black; elytra fusco-ferrugineus, longer than wide, very finely but strongly and densely punctate, clothed with a decurved rusty-colored pubescence similar to that of head and thorax but more dense; abdomen obscurely fulvous at tip, piceous, coriaceo-reticulate and very sparsely and finely punctate at sides, with median velvety fuliginous spots suffering intermixture of short cinereous hairs at the sides; under surface of abdomen clothed with sparse, long, depressed, fuscs-piceous pubescence, coriaceo-reticulate, punctures very fine and sparse, slightly less sparsely distributed at sides of segments, the male fifth ventral with a very broad circular and feeble sinuation medially, the male sixth ventral obscurely fulvous at tip and with a broad, rounded, median emargination about one half as deep as long, fifth ventral of female truncate, sixth female ventral rounded evenly and fulvous. Length ( ) 10.0-12.7 mm.; width 3.0-3.3 mm.

The Classification of the Pupae of the Ceratocampidæ and Hemileucidæ

The pupae belonging to the superfamily Saturnioidea may be identified by the following characteristics: Fifth and sixth abdominal segments free in both sexes; body surface hard and firm, always with setae, but these rarely long enough to be observed with the unaided eye; face-parts never with distinct sutures; antennal suture obsolete; labial palpi or maxillary palpi never visible; distinct cases for the mandibles never present, these structures often represented by an elevation or a distinct tubercule adjoining the caudo-lateral angles of the labrum; antennae usually showing distinct pectinations, the width at least one-fifth the length and usually much wider, the stem of the flagellum distinctly raised above the level of the pectinations, or if the stem of the flagellum is not distinct, then the body with the cephalic margins of the movable segments produced into distinct flange-like plates; maxillae, measured on the meson, seldom more than one-sixth the length of the wings, if longer, then the body surface without visible setae; third pair of legs very seldom visible; pupae usually more than an inch in length.

The Larva of Butalis Basilaris Zell: The Relations of its Setae

The Larva of Butalis Basilaris Zell: The Relations of its Setae

III.—Studies on the Life‐history of some Bombycine Moths, with Notes on the Setæ and Spines of certain Species

III.—Studies on the Life‐history of some Bombycine Moths, with Notes on the Setæ and Spines of certain Species