Biology Reference
In-Depth Information
Scutum: Scutum is shield shaped, almost as wide as long. Cervical grooves are
deep, concave, and extending slightly beyond mid-length of scutum. Punctations
are larger and deeper than those of male and irregularly distributed.
Legs: Coxa are with spurs on I to III similar to but slightly larger than respective
spurs of male; coxa IV is with a comparatively narrow spur approximating that of
III in length.
Nymph (
Figures 2.11 and 2.12
)
29
Total body length is approximately 1.7 mm, width 1.0 mm.
Capitulum: Capitulum is almost as wide as long (0.30 mm). Basis capitulum is
dorsally approximately 2.4 times as wide as long; cornua are obsolete. Palpi compact,
without lateral salience. Hypostome is about as long as palpi, 2
5 times as long as
wide, and clavate; dental formula is 2/2, with seven to eight denticles in a file.
Scutum: Scutum is slightly longer than wide. Cervical grooves are concave,
extend to three-fourths of scutal length. Punctations are rare.
Legs: Coxa are with a small, widely triangular spur on I, and slightly larger,
pointed spurs on II to IV.
Larva (
Figures 2.11 and 2.12
)
29
Overall body length is approximately 0.80 mm, width 0.60 mm.
Capitulum: Capitulum is slightly longer than wide. Basis capitulum is dorsally
approximately 2.5 times as wide as long. Palpi are narrow and without lateral
salience. Hypostome is slightly longer than palpi, 2.5 times as long as wide, lateral
outline parallel; dental formula is 2/2, with six to seven denticles per file.
Legs: Legs are moderately long and stout.
Related Species
29
All the three species, viz. cornupunctata, chordeilis, and punctata, included in the
subgenus Aboimisalis, form a homogeneous group. The latter two species has not
been recorded in India. H. cornupunctata is, however, closer to H. punctata than to
H. chordeilis. The distinguishing characters of the adults have been amply
discussed by Hoogstraal and Varma (1962). The nymphs and larvae of H. punctata
can be readily separated from those of H. cornupunctata for having a distinct baso-
lateral salience on palpal segment II. All the stages of H. chordeilis can also be
distinguished from H. cornupunctata in having a distinct basolateral salience on
palpal segment II. The adults can further be distinguished by their smaller cornua,
and the male by the shape of scutum being ovoid, instead of elongate-oval.
Hosts
29,51,120
Immature stages: Sheep, goat, domestic cattle, yak, horses, cow, cow calf, and
from flag dragging in Kashmir (India).
