. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 44 Bulletin Museum of Comparative Zoology, Vol. 157, No. 1. -40 -35 Latitude (Degrees North) Figure 109. Days on which mature M. galatheae were col- lected between 1937 and 1989 with latitude of the collection locality. Seasonality appears to be more restricted in southern regions than in northern regions. Scale of abscissa: -150 = August 3; 1 = January 1; 150 = May 30. scape with a corresponding variation in the position of the epigynal openings, it is nonetheless possible to distinguish the fe- males of M. galatheae
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 44 Bulletin Museum of Comparative Zoology, Vol. 157, No. 1. -40 -35 Latitude (Degrees North) Figure 109. Days on which mature M. galatheae were col- lected between 1937 and 1989 with latitude of the collection locality. Seasonality appears to be more restricted in southern regions than in northern regions. Scale of abscissa: -150 = August 3; 1 = January 1; 150 = May 30. scape with a corresponding variation in the position of the epigynal openings, it is nonetheless possible to distinguish the fe- males of M. galatheae from those of other species in the M. nigriventris group. Whether ventrally or posteriorly posi- tioned, the epigynal openings and the darkened shadows of the sclerotized re- ceptacles beneath them are relatively smaller than those of M. calamuchita, M. tarapaca, and M. nigriventris (compare Figs. 118-120 with Figs. 86, 94, 102). Also, M. galatheae lacks the swollen posterior lobes present in M. karkii (compare Figs. 118-120 with Fig. 123). The shape of the embolus of M. galatheae varies significant- ly (compare Fig. 109 with Fig. 110). How- ever, unlike other species, the embolus of M. galatheae has a distinct, round and swollen protrusion (Fig. 117). Variation. Average body length of 80 fe- males examined mm, range to mm. Average body length of 16 males ex- amined mm, range to mm. Epi- gyna vary considerably. Many, similar to the holotype, open ventrally and resemble a posteriorly widened version of M. tara- paca (Figs. 119, 120); cleared epigyna show relatively straight ducts connecting the epigynal openings with the seminal re- ceptacles. These have a short distance be- tween the openings and the hood of the scape. Others, usually in southern Chile, have posterior openings and look surpris- ingly different (Fig. 118); cleared epigyna show S-shaped ducts connecting the open- ings with the seminal receptacles. These have an extended wrinkled area bet
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