6D) exopod triangular with one distal hairy seta and some short thin setae on inner and outer margin; endopod of two articles, distal article flagelliform
, about 5 times longer than first.
Sensilli (110-118) spindle-form, covered by short cilia, with long stalk (45-53), well-developed oblong head (16) and long, flagelliform
distal part (49-53).
According to these results, the exceptional extensibility of the silk produced by the Flagelliform
gland is more likely due to the highly disordered state of the molecular chains that have no specific dihedral angle constraints--which would be the case in a given secondary structure.
These fibrils form the outer surface of a spider's composite cribellar capture threads and are supported internally by a pair of larger axial fibers produced by flagelliform
glands and spun from spigots on the posterior spinnerets (Peters 1983, 1984, 1986, 1992; Eberhard 1988; Eberhard and Pereira 1993; Opell 1990, 1993, 1994a-d, 1995, 1996).
staring out at the locust which bats its flagelliform
leaves at me.
Based on morphology, these silk glands can be grouped into seven general types: aciniform, aggregate, flagelliform
, major ampullate, minor ampullate, pyriform, and tubuliform (Kovoor 1987).
Diagnosis: Pale yellow species with 3 pairs of marginal setae on scut; male with only a small central shiny spot on st 2; female with paired spots laterally on tg 2-7; head higher than long, entirely pale yellow; eyes slightly oval with long axis almost vertical; pleural setae and setulae on legs yellow; distiph with long apical filaments and broad curved surs, with posteriorly-directed flagelliform
Two of these glands, the flagelliform
and aggregate glands, are unique to the araneoids and from these the viscid catching threads are drawn.
Male hemispermatophore: Flagelliform
, flagellum gradually tapering along its length, folded against shaft (Fig.
to irregularly awl-shaped, off-white ("pale pinkish cinnamon").