Can. Ent. 115: 257-279 (1983) Detailed generic descriptions are given for all stages of Brillia Kieffer. Keys are presented to separate them from those of allied genera, Eurycnemus Wulp, Euryhapsis Oliver, and Xylotopus Oliver. The known stages of five Nearctic species, including one new species Brillia laculata, are described. Two species-groups, the j7avifrons group and the modesta group, are defined. ResumeL'auteur decrit en dttail les stades du genre Brillia Kieffer et donne une clC pour les distinguer des genres voisins Eurycnemus Wulp, Euryhapsis Oliver et Xylotopus Oliver. On retrouve aussi dans I'article une description des stades connus de cinq especes ntarctiques, y compris la nouvelle espece Brillia laculata, ainsi que de deux groupes d'especes, les groupesjavlavifrons et modesta. THE CANADIAN EhTOMOUXilST March 1983and with middle area bare. Posterior margin of sternite VIII (9 ) with longitudinal groove separating pair of small narrow lobes. Anal lobe narrowed apically; anal macrosetae arising from apex of lobe.Remarks. The modesta group includes the Nearctic species, B. pawa Johannsen and B. retijinis Sather, and the Palaearctic species, B. japonica Tokunaga, B. kultia Singh, and B. modesta (Meigen).Brillia parva Johannsen -Brillia parva Johannsen, 1934: 35 1 ; Sublette, 1967: 493. Adult male. Color reddish brown to dark brown with scutal stripes, part of antepronotum and postpronotum, pleural sclerites, preepisternum, postnotum, and coxae darker. Abdominal tergites pale brown to dark brown. Antenna: AR 1. 39-1.75 (9). Head: Third palp segment longer than either fourth or fifth segment. Wing: Length, 2.27-3.07 mm (10). Hypopygium (Fig. 27): Subapical lobe of gonostylus usually longer than apical lobe, rarely two lobes subequal in length.Adult female. Similar to male except for following differences. Genitalia (Figs. 29, 31): Ventrolateral lobe of gonapophysis VIII with straight inner margin strongly projecting towards inner margin of opposite lobe; anteriorly lobe continuous with area lateral to vaginal opening; apodeme lobe located about level of coxosternapodeme. Vaginal opening U-shaped with lateral margins more or less straight; anterior dark internal projection absent; hinge strongly sclerotized with pointed apex directed distolaterally. Seminal capsules oval, pale, and with pale neck.Larva. Length, 6 9 mm. Antenna. AR 1. 23-1.38 (3). Mandible: Length,. Mentum (Fig. 32): Fifth lateral tooth smaller than sixth lateral, and appressed to and sometimes obscured by sixth lateral. Setae submenti located 96-1 14 Fm (3) anterior to postoccipital margin. Pupa. Cephalothorax (Fig. 28): Thoracic horn with sloping irregular apical margin with one corner longer than other corner or with apex bifid; spinules on apical half usually strong. Abdomen (Fig. 30): Tergite I1 with area of grey to brown polygons between posterior shagreen and hooklets.
A generic description of the larvae of Pagastia Oliver is presented. The larvae of three Nearctic species, P. partica (Roback), P. sequax (Garrett), and P. sp. A are described. A diagnostic key to these species is included.
Three new species records, Axinella arctica (Vosmaer, 1885), Semisuberites cribrosa (Miklucho-Maclay, 1870), and Cladocroce spatula (Lundbeck, 1902), and one new combination, Plicatellopsis bowerbanki (Vosmaer, 1885) comb. nov. from eastern Canada are described. The four species have similar growth forms which are either fan or cup-shaped with obvious stalks. This is the first description of a member of the genus Plicatellopsis in the North Atlantic, and the second record of the genus in the northern hemisphere. The four species described here have a history of misidentification in eastern Canada and this work aims to guide future identifications in the region.
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