Archive image from page 167 of The anatomy, physiology, morphology and. The anatomy, physiology, morphology and development of the blow-fly (Calliphora erythrocephala.) A study in the comparative anatomy and morphology of insects; with plates and illustrations executed directly from the drawings of the author; CUbiodiversity4765349-9885 Year: 1890 ( 142 THE INTEGUMENTAL SKELETON OF THE IMAGO. plates (Fig. 28, y, ds), discal plates the ' Obere Chitingabel' of Kraepelin, which support the pseudotrache£e and the teeth. The Thyroid is a shield-like convex plate which covers the whole of the ventr
Archive image from page 167 of The anatomy, physiology, morphology and. The anatomy, physiology, morphology and development of the blow-fly (Calliphora erythrocephala.) A study in the comparative anatomy and morphology of insects; with plates and illustrations executed directly from the drawings of the author; CUbiodiversity4765349-9885 Year: 1890 ( 142 THE INTEGUMENTAL SKELETON OF THE IMAGO. plates (Fig. 28, y, ds), discal plates the ' Obere Chitingabel' of Kraepelin, which support the pseudotrache£e and the teeth. The Thyroid is a shield-like convex plate which covers the whole of the ventral and lateral surfaces of the theca (Fig. 30, Ji). It terminates distally in a pair of divergent processes, or cornua ; these articulate with grooves in the furca (Fig. 28,5). Its lateral margins are strengthened by two strong internal ridges which terminate in the cornua (Fig. 30, ,/). The thyroid is developed after the insect emerges from the pupa, only its cornua are already present in the very young imago. Fig. 30.—Details of the haustellum : /, the prelabrum and ligula : a, external, and b, internal plate, the labrum and epipharynx of Menzbier; c, part of the pre- pharyngeal tube ; d, the ligula ; 3, the prelabrum seen from in front; j, the external plate, labrum of Menzbier ; 4, part of the thyroid sclerite : e, body of the sclerite ; / lateral ridges; g, inner, and /;, outer supports of the cornu ; i, the cornu ; /•, the furca ; /, groove in which the cornu is lodged. In the well-known preparations made by the late Mr. Top- ping, the thyroid shield is undeveloped, and the preparations exhibit other evidences of having been made from flies almost immediately after their escape from the pupa. The facial sclerites and the epistome are undeveloped ; the furca has also been cut through in the middle line, probably with a pair of scissors with very small strongly-curved blades—or by a V- shaped incision made close to the junction of the theca and the
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Keywords: 1890, archive, blowflies, book, bookauthor, bookdecade, bookpublisher, booksubject, bookyear, drawing, historical, history, illustration, image, london_pub_for_the_author_by_r_h_porter, lowne_benjamin_thompson_1839_, page, picture, print, reference, vintage
