Leptus

My own observations bearing on this point refer less to the Ixodes than to the minute bete-rouge, which is excessively abundant in the Plata district, where it is known as _bicho colorado, _ and in size and habits resembles the English Leptus autumnalis.

The Naturalist in La Plata 1881

That insect has been able to maintain its existence, without dwindling like the Leptus into a mere speck, through the great modification in organs and instinct, which adapt it so beautifully to the feathery element in which it moves.

The Naturalist in La Plata 1881

Leptus americanus, or harvest bug, animal parasite of skin, 480

Special Report on Diseases of the Horse Charles B. Michener 1877

PARASITE: _Larva of a Trombidium, Leptus americanus, or harvest bug, misnamed jigger (chigoe).

Special Report on Diseases of the Horse Charles B. Michener 1877

Another Leptus-like form is the parasite of the fly, described by Mr. Riley under the name of Astoma? muscarum (Fig. 146).

Our Common Insects A Popular Account of the Insects of Our Fields, Forests, Gardens and Houses 1872

While the Nauplius (Fig. 191) has but three pairs of appendages, which become the two pairs of antennæ and succeeding pair of limbs of the adult, in the Leptus as the least number we have five pairs, two of which belong to the head (the maxillæ and mandibles) and three to the thorax; besides these is a true heed, distinct from the hinder region of the body.

Our Common Insects A Popular Account of the Insects of Our Fields, Forests, Gardens and Houses 1872

Figure 182 represents the larva (Leptus) of the red garden mites; while a figure of the "water bear," or

Our Common Insects A Popular Account of the Insects of Our Fields, Forests, Gardens and Houses 1872

The Leptus-form larva of Julus, with its strange embryological development, in some respects so like that of some worms, points in that direction, as certainly as does the embryological development of the egg-parasite

Our Common Insects A Popular Account of the Insects of Our Fields, Forests, Gardens and Houses 1872

In seeking for the ancestry of our hypothetical Leptus among the worms, we are at best groping in the dark.

Our Common Insects A Popular Account of the Insects of Our Fields, Forests, Gardens and Houses 1872

That it is the result of degradation from the Leptus or Campodea form, we should be unwilling to admit, though the maggots of flies have perhaps retrograded from such forms as the larvæ of the mosquitoes and crane flies

Our Common Insects A Popular Account of the Insects of Our Fields, Forests, Gardens and Houses 1872