# Handbook of Medical Entomology

Author: Riley, William A. (William Albert), 1876-; Johannsen, O. A. (Oskar Augustus), 1870-1961

Genre: Category: Science - Biology

Language: English

License: Public domain

Source: https://www.gutenberg.org/ebooks/34279

Amazon editions: https://www.amazon.com/s?k=Handbook+of+Medical+Entomology+Riley&tag=cyberlibrar00-20

## Summary

The Araneida, or Spiders. The tarantulas. Bird spiders. Spiders of the genus Latrodectus. Other venomous spiders. Summary. The Pedipalpida, or whip-scorpions. The Scorpionida, or true scorpions. The Solpugida, or solpugids. The Acarina, or mites and ticks. The Myriapoda, or centipedes and millipedes. The Hexapoda, or true insects. Piercing or biting insects poisonous to man. Hemiptera, or true bugs. The Notonectidae or back-swimmers. Belostomidae or giant water-bugs. Reduviidae, or assassin bugs. Other Hemiptera reported as poisonous to man. Diptera; the midges, mosquitoes and flies. Stinging insects. Apis mellifica, the honey bee. Other stinging forms. Nettling insects. Lepidoptera, or b...

## Chapters

- [CHAPTER II.](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/14/index.md)
- [c. Thorax not shorter than the head, longer than the first tergite;](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/137/index.md)
- [Chapter XII. We shall consider especially _Cimex lectularius_, the most](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/16/index.md)
- [CHAPTER III](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/15/index.md)
- [CHAPTER VIII](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/24/index.md)
- [c. Thorax, particularly on the sides and near the base of the wings](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/21/index.md)
- [CHAPTER IX](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/25/index.md)
- [Chapter XII. Four blood-sucking species belonging to three genera have](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/17/index.md)
- [CHAPTER XI](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/27/index.md)
- [CHAPTER IV](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/18/index.md)
- [CHAPTER VI](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/22/index.md)
- [CHAPTER X](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/26/index.md)
- [CHAPTER VII](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/23/index.md)
- [CHAPTER I.](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/13/index.md)
- [CHAPTER V](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/19/index.md)
- [i. Coxae contiguous, radiate; legs slender, bristly; body](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/51/index.md)
- [d. Without scutum but covered by a more or less uniform leathery](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/31/index.md)
- [ll. Empodium short, scarcely reaching the middle](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/86/index.md)
- [mm. Suckers at least on legs I and II; parasitic](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/50/index.md)
- [cc. Rays of the arista not plumose; only one or two sternopleurals;](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/118/index.md)
- [CHAPTER XII](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/28/index.md)
- [mm. Conjunctiva of the ventral sclerites](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/114/index.md)
- [d. The vibrissal angle situated at a noticeable distance above the](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/124/index.md)
- [mm. Sternopleurals present, if rarely absent](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/111/index.md)
- [mm. Otherwise marked when the wings are](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/93/index.md)
- [i. Surface of the pronotum and prosternum more or less](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/72/index.md)
- [d. Dorsum of the thorax with a V-shaped suture; wings usually with](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/83/index.md)
- [d. Parasitic on vertebrates; mandibles fitted for piercing; body](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/39/index.md)
- [ii. Posterior dorsocentrals well developed, the inner](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/128/index.md)
- [ii. Base of the antennae dorsad of the middle of the eye;](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/126/index.md)
- [c. Body usually coriaceous, with few hairs, with a specialized seta](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/40/index.md)
- [cc. Antennae more elongate, segments more or less distinctly](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/82/index.md)
- [i. Proboscis scarcely extending beyond the palpi; front](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/96/index.md)
- [ii. Media of the wing simple, and otherwise not as in](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/87/index.md)
- [mm. Cephalothorax with but two long distinct](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/46/index.md)
- [mm. Trochanter I with dorso-terminal blade;](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/34/index.md)
- [d. Eyes large, projecting, distinctly pigmented; pharynx short and](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/52/index.md)
- [dd. Two pairs of clasping organs near the mouth, instead of legs,](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/30/index.md)
- [d. Antennae apparently two segmented, with three-segmented arista,](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/100/index.md)
- [m. Cephalothorax with four distinct and long](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/45/index.md)
- [ii. Apical angle of the penultimate abdominal segment](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/80/index.md)
- [mmm. The GEOMYZIDAE, AGROMYZIDAE,](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/106/index.md)
- [m. Femora with erect outstanding scales; occiput](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/94/index.md)
- [ii. Species of a stouter build; third segment of the](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/98/index.md)
- [cc. Anal areole of membrane extending farther proximad than the](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/77/index.md)
- [ii. Eyes bare; fronto-orbital macrochaetae in a double](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/123/index.md)
- [c. Usually elongate fleas, with a free-segmented flagellum of the](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/135/index.md)
- [ii. Eyes bare; the m-cu crossvein always nearer to the](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/122/index.md)
- [c. Arista flat, pectinate above with plumose rays; sternopleurals](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/117/index.md)
- [mm. Mouth parts very small, vestigial; arista](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/109/index.md)
- [i. Head large, eyes occupying nearly the entire head;](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/101/index.md)
- [m. Sides of the pronotum widely dilated, broader](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/62/index.md)
- [ll. Body clothed with rather longer silky hairs;](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/64/index.md)
- [dd. Pulvilli present (absent in one Australian family](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/69/index.md)
- [i. Metasternum without a median longitudinal keel;](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/57/index.md)
- [d. Squamae, head, and eyes large; occiput flattened or concave;](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/95/index.md)
- [ii. Apices of hemelytra notched; legs dissimilar; beak](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/59/index.md)
- [dd. Thorax constricted in the middle or cephalad of the middle;](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/71/index.md)
- [ii. Very short palpi, ridged dorsally and laterally;](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/36/index.md)
- [CHAPTER II](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/2/index.md)
- [i. Base of the antennae ventrad of the middle of the](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/125/index.md)
- [d. Thorax usually constricted caudad of the middle; anterior coxae](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/70/index.md)
- [i. Media forked (except in the European genus](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/84/index.md)
- [cc. Abdominal segments with one or more ctenidia; post-tibial spines](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/134/index.md)
- [l. Arista long plumose, or pectinate above; oral](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/105/index.md)
- [l. Tarsus with three segments; membrane with two](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/66/index.md)
- [mm. Posterior crossvein (m-cu) present, at least](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/107/index.md)
- [CHAPTER III](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/3/index.md)
- [m. Conjunctiva of the ventral sclerites of the](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/113/index.md)
- [ii. Dorsocentrals five; inner dorsocentrals present;](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/120/index.md)
- [cc. Front tarsi rarely one-segmented, never spade-form; beak free,](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/56/index.md)
- [ii. Projections of coxa I longer, and at least one of](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/37/index.md)
- [l. Hemelytra with embolium; head horizontal, more](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/65/index.md)
- [ii. Genae bare or with but one range of setae;](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/130/index.md)
- [ii. Dorsal integument not granulate; claws distinct; no](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/42/index.md)
- [cc. Antennal arista pectinate; bases of the antennae separated by a](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/116/index.md)
- [ii. Abdomen with strong macrochaetae; arista very](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/119/index.md)
- [c. Palpi much shorter than the proboscis; a brownish gray fly, its](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/20/index.md)
- [ll. Abdomen without macrochaetae; wing](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/132/index.md)
- [cc. Body swollen; meso- and metathorax, and abdominal segments two](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/54/index.md)
- [ll. Last antennal segment clavate or fusiform; win](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/68/index.md)
- [l. Empodium well developed, nearly as long as the](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/85/index.md)
- [m. Proboscis geniculate, inserted in a deep](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/108/index.md)
- [CHAPTER XII](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/12/index.md)
- [i. Posterior coxae hinged (cardinate), if rarely](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/60/index.md)
- [i. Dorsal integument more or less granulate; claws very](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/41/index.md)
- [l. Hypopleurals wanting; if three sternopleurals](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/110/index.md)
- [l. Body of plate distinctly longer than broad;](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/32/index.md)
- [CHAPTER IX](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/9/index.md)
- [d. Head armed with a ramous or furcate spine below each side,](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/75/index.md)
- [CHAPTER IV](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/4/index.md)
- [CHAPTER X](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/10/index.md)
- [cc. Very short fleas; flagellum of the antenna with pseudo-segments](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/136/index.md)
- [ii. Third segment of the antenna short and with terminal](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/99/index.md)
- [m. Deep black, thorax obscurely lined with](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/92/index.md)
- [mm. Flies with another combination of](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/104/index.md)
- [l. Third pair of legs in the male without apical](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/47/index.md)
- [mm. Sides of the pronotum neither dilated, nor](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/63/index.md)
- [cc. Ocelli cephalad of the hind margins of the eyes; first segment](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/73/index.md)
- [l. Body covered with short hairs, only the sides](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/61/index.md)
- [m. Hind feet from the middle of the second](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/89/index.md)
- [d. Post-tibial spines in pairs and not in a very close set row;](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/133/index.md)
- [CHAPTER V](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/5/index.md)
- [CHAPTER VII](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/7/index.md)
- [l. Abdomen with clusters of broad outstanding](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/88/index.md)
- [l. The bristle on the penultimate segment of the](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/43/index.md)
- [l. Macrochaetae of the abdomen marginal;](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/131/index.md)
- [CHAPTER VI](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/6/index.md)
- [m. Trochanter I with distinct dorso-subterminal](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/33/index.md)
- [l. Antennae filiform or sometimes more slender](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/67/index.md)
- [i. Short palpi; highly chitinized; unfed adults of large](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/35/index.md)
- [i. Eyes of the male pilose or pubescent, of the female](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/121/index.md)
- [ii. Juga when prominent, obtuse at apex; eyes full width](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/79/index.md)
- [c. Antennae reduced, wings when present, with distinct parallel veins](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/81/index.md)
- [c. Antennal arista short or long-plumose; neither sex with distinct](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/115/index.md)
- [i. Genae with several ranges of microchaetae;](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/129/index.md)
- [cc. Legs stumpy or absent, body more or less elongate or vermiform,](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/29/index.md)
- [m. Head nearly spherical, cheeks broad and](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/103/index.md)
- [CHAPTER XI](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/11/index.md)
- [c. Anal areole of the membrane not extending as far proximad as the](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/74/index.md)
- [i. Juga distinctly prominent at the apex and often acute](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/78/index.md)
- [CHAPTER I](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/1/index.md)
- [i. Species of slender build, usually with a banded](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/97/index.md)
- [cc. Hypostome small, without teeth, venter without furrows; body](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/38/index.md)
- [dd. Eyes indistinct or wanting; pharynx long and slender, fulturae](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/53/index.md)
- [l. Pedicel of the suckers jointed; mandibles](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/48/index.md)
- [mm. Hind feet black, mottled with whitish and](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/90/index.md)
- [CHAPTER VIII](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/8/index.md)
- [l. A bristle (vibrissa) on each side of the face](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/102/index.md)
- [ll. Hypopleurals present; when three](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/112/index.md)
- [c. Front tarsi of one segment, spade-form (palaeformes); beak short,](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/55/index.md)
- [ll. The bristle on the penultimate segment of the](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/44/index.md)
- [dd. Head unarmed below or armed with a simple spine; rarely with a](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/76/index.md)
- [ll. Abdomen without such a cluster of scales;](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/91/index.md)
- [m. No suckers on the legs of the females;](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/49/index.md)
- [i. Apices of the hemelytra entire; the three pairs of legs](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/58/index.md)
- [i. Posterior dorsocentrals inconstant and unequally](https://www.cyberlibrary.org/en/books/handbook-of-medical-entomology-34279/chapters/127/index.md)