Saigusaia pikei, new species

Figure 37, Plate 4B

DIAGNOSIS: Distinguished from the living species by Sc long, meeting C just before RS base.

DESCRIPTION (see also table 3): Body length = 2.84 mm, wing length = 1.80 mm. Head: Ocelli three, each slightly raised, very close. Eyes pubescent. Vertex and clypeus setulose. Flagellum 14­segmented, flagellomeres cylindrical, with length slightly greater than width. Mouthparts form short proboscis, length is one­half the head height. Only three palpal segments seen: antepenultimate segment swollen, penultimate and apical ones narrower, bacilliform. Length ratio 1:1.7:2.7. Thorax: Antepronotum with two long setae. Scutum with strong, curved lateral, dorsocentral and acrostichal setae. Mediotergite and laterotergites bare. Scutellum with 5 pairs of rather short setae. Metepisternum with two long setae dorsally. Wing: Costa ends beyond tip of R 5, one­third distance between tips of R 5 and M 1. Stem of R, R 1 and R 5 with rows of dorsal and ventral setae. R 1 and R 5 straight. Sc meets C just before RS base. Sc 2 apical, proximal to base of M3. Crossvein r­m 1.5Χ length of RS1 and 0.3Χ length of M3 section. Fork of M 1 and M 2 2.7Χ length of M3. M 1 and M 2 fork campanulate, veins straight, with a few ventral setae apically. Base of M 3+4 and CuA fork proximal to base of M 1 and M 2 fork, M 3+4 and

TABLE 3 Comparison of Boletina, Saigusaia, and Saigusaia pikei n.sp.

CuA curved caudally. Legs: Tibial bristles 2Χ tibial diameter. Tarsal claw with one tooth. Abdomen: Sternite 8 with two triangular, rounded, caudal lobes covered by long setae. Cerci two­segmented. Basal segment large and broad, apical one 0.5Χ the length and 0.5Χ the width of basal one; both setose.

MATERIAL: Holotype TMPD P79.15.7.21, female. Canada: Alberta, Grassy Lake, coll. T. Pike.

ETYMOLOGY: The species epithet is patronymic for Dr. T. Pike, who collected the specimen.

COMMENTS: This species has almost all the features of Saigusaia (table 3, see also Vockeroth, 1980), so despite the long Sc vein its placement in the genus is virtually certain.