Biology Reference
In-Depth Information
Female (
Figures 2.115 and 2.116
)
63
Mean length is approximately 3.4 mm, and width is 2.0 mm.
Capitulum: Basis capituli are slightly wider than in male; porose areas are dis-
crete, small, widely spaced, sub-circular. Palpi and hypostome are essentially as in
male.
Scutum: Scutum is shield shaped, outline widest at apical one-fourth of length.
Cervical grooves consist of small, deep sub-marginal pits anteriorly and shallow,
parallel grooves extending to mid-length of scutum. Punctations are as in male
anteriorly. Genital operculum is distinctive, triangular with truncate apex, and shal-
low, depressed sub-circular area centrally.
Legs: Coxa are with spurs similar to those of male, except that spur on IV is
shorter.
Nymph (
Figures 2.115 and 2.116
)
76
Overall body length is approximately 1.5 mm, breadth 0.8 mm.
Capitulum: Basis capitulum is dorsally 2 times as broad as long; margins are
straight; cornua are broadly triangular, approximately one-half as long as the base
of basis capitulum. Palpi are broadly campanulate; combined breadth is approxi-
mately 1.38 times breadth of basis capitulum. Hypostome is longer than palpi,
approximately 2.3 times as long as broad; dental formula is 2/2 (one or two extra
denticles may be inserted anteriorly and posteriorly), with denticles in files of
seven or eight.
Scutum: Scutum is approximately 1.3 times as broad as long. Cervical grooves
are narrow, linear, parallel, and extending to scutal mid-length. Punctations are
few, obscure.
Legs: Legs are long. Coxa I spur is triangular, reaching anterior margin of coxa
II; II to IV spurs each is broadly triangular, extending well beyond posterior mar-
gin, successively decreasing in size.
Larva (
Figures 2.115 and 2.116
)
76
Total body length is approximately 0.7 mm, breadth 0.5 mm.
Capitulum: Basis capitulum is dorsally and ventrally essentially as in nymph
except for more convex posteroventral ridge and absence of adjacent setae. Palpi
outlines essentially as in nymph except for slightly narrower posterior margins of
segment II. Hypostome is essentially as in nymph except for denticles in files of
about six.
Scutum: Scutum is about 1.5 times as broad as long; anterior emargination and
margin are as in nymph except for more rounded scapulae; margin is concave from
mid-length, posteriorly narrow, bluntly rounded.
Legs: Legs are long. Coxa I spur is broadly triangular, extending almost up to
anterior margin of segment II; coxa II and III spurs each is as a broadly rounded
ridge.
