. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 258 Bulletin Museum of Comparative Zoology, Vol. 138, No. moderately lightly hirsute. Tibia I ventral spination: 3-3, long and strong. External epigynum with two small semi- circular openings directed posteriorly (Fig. 204). Internal structure with two elongated spermathecae, wider in middle (Fig. 203). Diagnosis. Castianeira trimac differs from other Castianeira in its abdominal pattern (tliree light spots in a horizontal row at the posterior end), a single heavy "claw" at the apex of each chelicera in the
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 258 Bulletin Museum of Comparative Zoology, Vol. 138, No. moderately lightly hirsute. Tibia I ventral spination: 3-3, long and strong. External epigynum with two small semi- circular openings directed posteriorly (Fig. 204). Internal structure with two elongated spermathecae, wider in middle (Fig. 203). Diagnosis. Castianeira trimac differs from other Castianeira in its abdominal pattern (tliree light spots in a horizontal row at the posterior end), a single heavy "claw" at the apex of each chelicera in the females (Fig. 270), and the embolus of the male (Fig. 202). Remarks. This is the smallest of all known species of Castianeira. Natural history. Nothing is kno\\'n of the habits of this species. Distribution. Panama (Map 12). Records. CANAL ZONE. Barro Colo- rado Island, Forest Reserve, Summit. Mazax O. Mazax O. , 1898, Biol. Centrali- Aniericana Arachnida 1:275-276, pi. 34, fig. 2, $. Type-species by monot>py: Mazax spinosa O. , op. cit., 1:276, pi. 34, fig. 2. $, from Teapa, Tabasco, Mexico; in the Brirish Museum (Natural History), examined. The specific name is a junior homon\Tn, the new name is Mazax pax. Characteristics. Two rows of eyes, the posterior row wider than the anterior row; anterior row recurved, the posterior row straight or slightly procurved; eyes moder- ately large and approximately equal, with the anterior median eyes slightly smaller than the anterior lateral eyes. Thoracic groove moderate to extremely weak. Cephalic region of carapace mod- erately narrow (cephalic width index 53- 64). Abdomen with a distinct, rugose, anterior petiole (Figs. 282-285). Constriction in male abdomen. Tibia I ventral spination usually paired and moderately long: .3-3, 4-4, .5-5, or 6-6 (except JM. ajax with 2-1, small spines). Carapace length mm, with a carapace index of 54-66 (moderate j. Ol c ro ^ in 1/) O) a Ol -ii 'n X 0) X
Size: 1788px × 1397px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorharvarduniversity, bookcentury1900, booksubjectzoology
