A Monograph of the Anopheles Mosquitoes of India / by S.P. James and W. Glen Liston
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1 A Monograph OF THE nopheline Mosquitoes of India BY S. p. JaMIiS, M.D., D.P.H., I. M.S. Secretary to the Committee for the Study of Malaria in India ; formerly ivith the Royal Society's Malaria Commission in India AND W. Glen Liston, m.d., d.p.h., i.m.s. Of the Research Laboratory, Parel, BomOay Second Edition Re-wriUey) and enla\s;ed CALCUTTA THACKER, SPINK AND CO 191 CALCUTTA PRINTED BY THACKEK, SPINK AND COMPANY. FKOM THE PEEFACE TO THE FIRST EDITION. This book has been written at the request of some of our fellow-workers in India, so we need not apologise for its publication. Its scope is indicated in the title, "We have attempted to treat the subject clearly, and to describe the different species in such a manner that any specimen collected will be easily identified. In our opinion this is the most important requirement of any book dealing with mosquitoes, and in connexion with it we venture to hope that our coloured plates will be found helpful. We are much indebted to our friend Dr. Turkhud, of Bombay, for having drawn them, under our direction, with so much care and skill. PREFACE TO THE NEW EDITION. All the copies of the first edition were sold within a few months, but we decided to postpone the issue of a new edition until we should be able to include in it the results of further study. We hope that the changes and additions now made will be held to justify our decision. We have kept in view that the purpose of the book is to aid in the correct determination of specimens, and the new matter on this subject includes a redescription of every species that was mentioned in the first edition. In common with many other medical men, we are greatly disappointed that no dipterologist has examined in detail Mr. Theobald's admirable pioneer work on classification and identification by scale structure, but, that being so, we cimsider that our endeavour in Chapter III needs no apology ; it will serve its purpose if collectors find that it assists them in the task of identify- ing their specimens. We are indebted to many workers for information and material, especially, as regards workers in India, to Captain Christophers, I. M.S.; N. Annandale, Esq.,D.sc.; Lieut. -Colonel Adie, lm.s.; Major F. Smith, D.S.O., R.A.M.c, and Dr. Bentley and, as C. A. ; regards workers in England, to F. V. Theobald, Esq., m.a.; Dr. J. W. W. Stephens and R. Newstead, Esq. CONTENTS. PART I.—General. Page. Chapter I, —A general account of mosquitoes ... ... ... I Chapter II —The collection, mounting, and examination of anopheline mosquitoes and their larvse ... ... ... 20 Chapter III. —The classification and identification of Indian anophelines 37 PART II Systematic. The genus Neostethopheles ... ... ... ... ... 59 The GENUS Patagiamyia ... ... ... ... ... 62 GENUS Myzomifia ... ... ... The ... _ _ gg The oenus Anopheles ... ... ... ... ... 75 The GENUS Pyretophoru^s ... ... ... ... Qi The genus Nyssorhynchus ... ... ... ... 34. The GENUS Nyssomyzomyia ... ... .,, ... gg The GENUS Neomyzoynyia ... ... ... ... i(j5 Thb GENUS Neocellia ... ... .. ... ... 107 ... The GENUS Cellia ... ... ... ... ijg The GENUS Myzorhynchus ... ., ... ... ... ng The GENUS Christophersia ... ... ,,. ... ... ^23 The genus Aldrichia ... ... ., ... ... 125 .. ILLUSTRATIONS. List of full-page Plates. Plate I. Eggs and larvte of anopheline and culicine mosquitoes To face page 4 „ n. Larvse and pupae of culicine and anopheline mosquitoes „ 6 larva of maculipalpis . • ' y> ni. The „ „ 8 „ IV. Adult male and female culicine and anopheline mos- quitoes . ••»»,, 10 of Anopholines species) . » V. Wing scales (12 . 38 » VI. Wing scales of Anophelines (12 species) .. .. 39 » VII. The shape of the wing scales in the genera Anopheles and Myzomyia . 41 Lithographed plates to show generic characters. Plate A. The genera NeostetJiopheles, Blyzonvi/ia, Patagiatnyia'\ and Pyretophorus. At the cad of „ B. The genera Nyssorhynchus and Nyssomyzoinyia. Part I. C. The genera Neocellia and Cellia. „ D. The genera Myzorhynchus and Christophersia. » VIII. NeostetJiopheles aitJceni To face page 60 » IX. Neostethopheles culiciformis . 61 „ X. The larvse of culicifacies and turk/mdi 70 „ XL The larvse of listoni and jeyporiensis 73 „ XII. Nyssorhynchus harwari 96 „ XIIL The larvse of rossi and stephensi 98 » XIV. Nyssomyzomyia punctulata . 104 » XV. Neomyzomyia elegans 105 „ XVI. The larvse of barbirostris and fuliginosus 118 „ XVII. Christophersia halli 123 List of coloured plates (at the end op the book). I. Descriptive Diagram of a female Anopheline. II. Patagiamyia lindesayi, Giles. III. Myzomyia culicifacies, Giles. IV. Myzomyia listoni, Liston {-fvviaiilis = christopJi€rsi). V. Anopheles turkbudi, Liston. VI. Pyretophorus jeyporiensis, James. VII. Nyssorhynchus fuliginosus, Giles. VIII. Nyssorhynchus jamesi, Theobald. IX. Nyssorhynchus maculipalpis, James and Liston. X. Nyssorhynchus theobaldi, Giles. .. List of illjistrafio7is List op coloured plates (at the end of the book)—concld. XI. Nyssomyzomyia rossi, Giles. XII. Neocellia stephensi, Listen. XIII. Oellia pulcherrima, Theobald. XIV. Myzorhynchus barbirostris, Van der Wulp. XV. Myzorbyncluis nigerrimus, James and Listen ( = sinensis, Wiedmann). List of other Illustrations (in the text) Mosqiiito eggs On page 4 Larvfe oi Chironomiis, Ephemera, and Corethra • ' 5> 55 8 To show method of mounting a mosquito 55 55 24 ,, ,, preserving mosquitoes in tubes . • 55 55 25 ,, „ examining mosquitoes • 5> 55 27 „ mounting mosquitoes on pith blocks 55 55 28 alive ,, keeping mosquitoes in bottles !5 55 34 of: (six species) Eggs anophelines 55 55 35 of Patagiamyia gigas Wing • jS »} 65 Wing and palpi of Patagiamyia simlensis . S3 55 68 Wing of variety jiunjabensis . sj 55 72 of clasper of turJchudi End >j 55 80 Wing of Nyssorhynchus harivari 55 55 97 Palpi of rossi and ludlowi wing of ; ludlowi • 55 55 103 of Neomyzoynyia elegans Wing • 55 55 106 Palp, wing, and hind leg of Neocellia indiea • 55 "55 108 leg of Palp, wing, and hind Neocellia willmori • >}. 51 111 J- PART 1. — A MONOGRAPH OF THE ANOPHELINE MOSQUITOES OF INDIA. CHAPTER I. A GENEEAL ACCOUNT OF MOSQUITOES. OSQUITOES or gnats (CULICIDtE) belong to the order of insects known as DIPTERA. As is well-known, a typical member of the class INSECTA has four wings, but it is characteristic of members of the order DIPTERA that the hinder pair of wings are so reduced in size as to form only small knobs called " balancers " or halteres, so that DIPTERA are often spoken of as " two -winged flies/' Other important characters of members of this order are that the mouth parts are adapted for sucking—sometimes also for piercing—and that the insects undergo complete "metamorphosis"—a term which is explained by Claus in the following manner :— " The more complete the agreement between the just-born young and the adult sexual animal so much th? greater will be the duration of the embryonic development and the more complicated the developmental piocesses of the embryo. The post-embryonic development will, in this case, be confined to simple processes of growth. When, however, the embryo is born in an immature condition and at a relatively low state of organization, the post-embryonic development addition to its increase in size, will be more complicated, and the young animal, in will present cases various processes of transformation and change of form. In such the just-hatched young, as opposed to the adult animal, is called a Larva and develops gradually to the form cf the adult sexual animal. The development of larvae, however, is by no means direct and uniform, but is complicated by the necessity for special contrivances to enable them to procure food and to protect place in an entirely different medium, under different conditions of themselves ; sometimes taking is known as metamorphosis." life. This kind of post-embryonic development The phenomena of metamorphosis are well shown in the life history of insects. The different stages through which mosquitoes pass before they reach the adult state may, for example, be briefly described in the following way : The adult female mosquito lays its eggs on the surface of water. The eggs float on the water for some days (two to four), after which time they hatch into small wriggling animals called larvw. A] How to distinguish Mosquitoes from other Flies. The larva is a free swimming worm-like animal, whicli eats greedi- ly and grows rapidly, casting its skin several times in the process, till it reaches its full development. At this stage it suddenly changes its from casting its skin, the ; worm-like larva assumes a comma shape, and becomes the fufa or nynvpha. the pupal insect During stage the does not eat ; it spends its time in struggling to the bottom of the water and rising to the surface to breathe profound anatomical ; changes take place within the pupal skin, whereby the masticatory mouth parts of the larva are converted into the suctorial apparatus of the adult insect or imago. After a cer- tain number of days the pupa-case ruptures, and the adult insect is liberated, furnished with wings and legs adapted for a life in the air. The DIPTERA. have been divided into two great groups, termed OrthorrhafJia and Cyclorrha'pha, according to the manner in which the pupa-case splits to permit the escape of the perfect insect. In the OrthorrhafJia, which includes the Culicidco (mosquitoes), the Corethri- dce, the Chironomidw (midges), the SimuliidcB (sand-flies), the Ceci- domyidce (gall-midges), the MycetophilidcB (fungus-midges), the Tipu- lidcB (daddy-long-legs), the Tahanidw (horse-flies), etc., the pupa-case splits longitudinally down the median dorsal line. In the Cyclor- rhapha, which includes the ^^r^}A^^^cB (hover-flies), the OestridcB (bot-and warble flies), the Muscidce (house flies, tsetse flies, blue and green bottle flies, flesh flies, etc.), the perfect insect escapes by the splitting off of a cap from the head end of the pupa.