44 
Psyche 
[Vol. 89 
1977b). However, at both Finca Chenevo and Finca Mozambique 
one immature was found at the hub of a web like that shown in 
Figs. 11a, b. Each web consisted of a small, more or less horizon- 
tal orb which had only a non-sticky spiral. Below this was a cone 
which also had a non-sticky spiral. Only one of these spiders was 
collected, the other was left on its web, and the next day the web 
was deserted and an exuvium was found clinging to its hub. Identity 
of the collected immature specimen is not certain, but abundance of 
U. trilineatus at these sites plus the failure of extensive collecting of 
orb weavers to reveal similar species in these habitats indicates that 
these immatures were U. trilineatus. 
Conifaber parvus * 
This species was fairly common in a periodically flooded forest on 
Finca Mozambique. Only mature females were found with webs. 
The webs all had an “orb” similar or identical to those spun by most 
newly emerged uloborid spiderlings (Szlep, 1961; Eberhard, 1977b), 
having radii, hub, frames, and a non-sticky spiral as in typical orbs 
but lacking a sticky spiral and having instead a dense mat of very 
fine threads (so fine that in Figs. 12a, b they do not show up as 
individual threads, and one only sees the grains of cornstarch). 
Below this orb was a conical web consisting of radii which 
converged below to a single downward-directed line, and a more or 
less regularly spaced spiral, also of non-sticky silk. The hubs were 
often decorated with linear stabilimenta. 
The spider crouched at the hub with its legs I folded ventrally in 
the typical Philoponella posture (Opell and Eberhard in prep.). 
Sometimes when a spider was disturbed she let herself fall from the 
hub and hung suspended inside the cone on her dragline and 
bounced actively there. On other occasions spiders bounced on their 
orbs. 
Attack behavior was observed twice and seemed to be typical for 
uloborids. The spider turned to face away from the prey and threw 
silk over it with her legs IV, gradually cut it loose as she wrapped it, 
then held it with the palps and/or chelicerae as she reattached the 
ends of the broken radii, took it to the hub, and then resumed 
These are a new genus and species, described below. 
