Lithocolletis Scudderella F. & B.

Knowing this species only by Prof. Frey's description, I have in previous notices treated it as identical with L. salicifoliella Cham. But among the specimens submitted to me by Dr. Hagen is one of Prof. Frey's Scudderella, and being thus enabled to compare it with salicifoliella, I find that they are sufficiently distinct.

A troglobite species, Quaestus (Quaestus) acuminatus sp.nov., from the Cantabrian Mountains (Province of Asturias, Spain) is described and illustrated. The taxonomic position is discussed and data on its isolation and geographical distribution are given.

Wandering of Cryptolestes ferrugineus (Stephens) larvae was demonstrated in the laboratory among wheat kernels at 30 °C and 15.5% moisture content, initially infested at an adult density of 0.4 adult per gram of wheat. The majority of the wandering larvae were first (37.3%) and fourth (56.0%) instars.

During 1960, 534 organisms were collected from 32 nests. In order of decreasing numbers they were ants, bark lice, beetles, mites, sowbugs, springtails, spiders, snails, millipeds, harvestmen, hemipterous nymphs, biting midges, a slug, a damsel bug and a wasp. Observations on their distribution among the nests are included.

William E. Leach, and not Frederick Smith, Ernest André has it, was the first to establish the family Mutillidœ but none of these gentlemen correctly defined it, and all have included genera which do not belong to it. Some of the genera belong to the Bethylidœ, one belongs to the Thynnidœ, one to the Cosilidœ, and others to the Myrmosidœ.

Chrysocharis laricinellae (Ratz) is a European parasite of the larch casebearer, Coleophora laricella (Hbn.), and was one of several species introduced into eastern North America in the 1930's for biological control. Following their release, C. laricinellae and the braconid Agathis pumila (Ratz.) became established and reduced casebearer poulations drastically (Graham 1949). Both parasites are now being used for biological control of the casebearer in western North America. A. pumila was first released in northern Idaho in 1960 (Denton 1979). C. laricinellae was not intentionally released until 1972 (Ryan and Denton 1973), although it probably became established in certain areas earlier (Ryan et al. 1974). The purpose of this paper is an historical documentation of the early distribution and relative abundance of C. laricinellae, made possible largely because of an extensive, one-time survey in 1977 by entomologists of the USDA Forest Service, Northern Region (Flavell 1979).

During the summer of 1938 the Royal Ontario Museum of Zoology, Toronto, organized an expedition to the little-known region of Favourable Lake, in the Patricia portion of the Kenora District, about 70 miles from the Manitoba boundary (53° 50' N. Lat., 93° 40' E. Long.). In 1939, two small parties were sent out by the Museum, one to Attawapiscat Lake, also in the Patricia country (52° 10' N. Lat., 88 E. Long.), and the other to various stations in the Cochrane District, from Cochrane northward to Moosonee on James Bay.

One of the few Canadian entomologists to study thrips was R. C. Treherne who was one of the group of workers to investigate the pear thrips when it first became an economic pest in North America. In the course of his work he collected and studied thysanoptera. His collection, supplemented by exchanges with other workers, formed the basis for the material now in the Canadian National Collection at Ottawa. The writer is indebted to curators of this collection and particularly T. N. Freeman, for the generous loan of valuable specimens for study, particularly the types of Treherne. The Moulton collection is now deposited at the San Francisco Academy of Science, Golden Gate Park, San Francisco, California. We also wish to thank Dr. E. S. Ross, curator, for the opportunity of studying the types of Taeniothrips tahoei Moulton, Tae. pingreei Moulton, Tae. aureus Moulton, and Frankliniella californica Moulton.

Some time ago, while in St. Louis, I called on Dr. Geo. W. Bock, and saw in his collection a remarkable specimen of a female Lucanuselaphus, from Popiar Bluff, Mo. On my expressing interest in the matter, the Doctor very kindly gave me the insect, and I wish to put the case on record.

The results of a three year study of the imported parasites of Diprion polytomum show that an eulophid parasite, Microplectron fuscipennis Zett., gives promise of becoming an important control factor of the spruce sawfly in Canada. M. fuscipennis is widely distributed in Europe, and its habits there have been fully discussed by Morris and Cameron (1935) and by Ullyett (1936).

In the months of June and July the Red Pine (Pinus resinosa) and the white Pine (Pinus strobus) show by the exuding pitch that they are suffering from the attacks of an insect. The wounds occur on the main stem below, the insertion of the branch. On cutting into the bark the injury is found to be caused by a small larva, which, when full grown, measures 16 to 18 millimetres. The head is shining chestnut brown with black mandibles. The body is livid or blackish green, naked, with series of black dots, each dot giving rise to a single, rather stout, bristle.

In a series of papers (Vickery and Nagy 1973; Vickery et al. 1974; Vickery and Kevan 1983), 2 members of the genus Trimerotropis were considered to be subspecies, T. verrruculata verruculata (Kirby) and T. verruculata suffusa Scudder. This relationship was based in part on a statement by Hebard (1929) that 1 was sometimes mistaken for the other where the ranges meet. The former is widespread across the northern part of the continent from Newfoundland to British Columbia and north into the Northwest Territories. The latter is a western taxon, occurring from British Columbia southward into California. Helwig (1955) reported on genetic studies of hybrids between the 2. We made no careful study of the problem, but accepted that production of hybrids indicated a lack of reproductive isolation and therefore considered them as subspecies even though the work of Helwig (1955) indicated that the F, hybrids may be infertile.

In July, 1959 I reared a polyembryonic encyrtid from a species of Lithocolletis attacking Alnus crispa (Ait.) Pursh in the lake region around Ohio, Nova Scotia. It represents a species and genus new to science.

Gibberella, new genus

Type species: Gibberella scutellata Miller, new species.

Icerya (Crypticerya) Hempeli, n. sp.,—♀. Exposed on bark, subglobose, much like a very large I. rosoe. Length 8, breadth 7½, height 5⅛ mm.; dark slate-gray, with a thin but rather dense coating of cream-coloured mealy secretion. Subdorsal areas marked by a longitudinal series of small round spots free from secretion. Legs piceous or dark brown.

It is strange that such a distinct genus as Aulacus should not have been recognized by American workers, but there seems to be no doubt that our Pammegischia Provancher, 1883 is merely Aulacus Jurine, 1807.

Ancylis discigerana (Walker) is a univoltine leaf folder of yellow birch. Final instar larvae overwinter in litter and pupate from mid-April through mid-May. Adults emerge in early June and deposit single eggs on the upper surface of a leaf, usually on a major leaf vein or other small depression in the epidermis. The first two instars skeletonize the lower surface of a leaf, beneath a sheet of silk that is constructed between two lateral veins. Third-instar larvae move to the upper surface of a different leaf and fold it lengthwise. Larvae feed on the upper epidermis within the fold until leaf-fall. Life stages are described.

An egg parasitoid, Trichogramma minutum Riley, and a larval parasitoid, Apanteles polychrosidis Viereck, were the major natural enemies in the population studied.

A key is presented for three species of Ancylis found on yellow birch.

In the description of the Byron Bog (Judd, 1957) it was pointed out that the Pitcher-plant, Sarracenia purpurea L., is a plant commonly associated with leather-leaf, Chamaedaphne calyculata, in the “Chamaedaphnetum calyculatae” association in the bog. The period of blooming of this plant in 1956 was from June 13 to June 22. During this period, and subsequently, collections were made of larvae of the moth Exyra rolandiana Grt. from the flowers and leaves. The moths were kindly identified by Mr. D. F. Hardwick, Systematic Entomology, Department of Agriculture, Ottawa.

The literature concerning the large Stag-beetle Pseudolucanus placidus (Say) contains many conflicting and misleading data. Since the species occurs in exceptional abundance in a very restricted sandy area surrounding the author's home, it became a fairly easy task to check up on these statements. Thc present paper contains the information gathered during the past several years.