Sri Lanka is a tropical island situated close to the southern tip of India. The invertebrate fauna is as large as it is common to other regions of the world. There are about 2 million species of arthropods found in the world, and still is counting.
The following list is about Orthopterans recorded in Sri Lanka.
Orthopterans Phylum: Arthropoda Class: Insecta Order: Orthoptera
The Orthoptera order of insects includes the grasshoppers, crickets, cave crickets, Jerusalem crickets, katydids, wētā, lubber, Acrida, and locusts. More than 27,000 species are distributed worldwide. Many insects in this order have paurometabolous or incomplete metamorphosis, and produce sound (known as a "stridulation") by rubbing their wings against each other or their legs, the wings or legs containing rows of corrugated bumps. The tympanum or ear is located in the front tibia in crickets, mole crickets, and katydids, and on the first abdominal segment in the grasshoppers and locusts. These organisms use vibrations to locate other individuals. There are two suborders and 235 subfamilies are in this order.
The following list provide the orthopterans currently identified in Sri Lanka. One of Sri Lanka's leading naturalist and expert on orthopterans, George Morrison Reid Henry, who was born in Sri Lanka, was appointed as Assistant in Systematic Entomology at Colombo National Museum from 1913-1946. He started much work on many micro arthropods including orthoptera as well. But the most comprehensive work confined to orthoptera was done by G. M. Henry, though no single monograph of Sri Lankan species is available. The world catalogues of Otte provide up-dated nomenclature and classification. In 2020, a new pygmy grasshopper was discovered from Sinharaja rainforest.
According to Sandrasagara, (1949 to 1954); and Chopard, (1936), 350 species of orthopterans identified from Sri Lanka.
Endemic species are denoted as E.
Family: Tridactylidae - Pygmy mole crickets Tridactylus variegatus Tridactylus nigroaenus Tridactylus curlus Tridactylus quadrimaculata Tridactylus thoracicus Tridactylus ceylonicus Xya frontomaculatus Xya nigripennis Xya opaca Xya riparia
Family: Acrididae Sub family: Gomphocerinae - Slant-faced grasshoppers Dnopherula sp.
Sub family: Acridinae - Silent slant-faced grasshoppers Acrida exaltata
Sub family: Oedipodinae - Band-winged grasshoppers Aiolopus thalassinus Gastrimargus africanus
Sub family: Hemiacridinae Spathosternum prasiniferum
Sub family: Cyrtacanthacridinae - Bird grasshoppers Cyrtacanthacris tatarica
Sub family: Eyprepocnemidinae Cyrtacanthacris tatarica
Sub family: Catantopinae - Spur-throated grasshoppers Xenocatantops humilis Catantops pinguis
Family: Chorotypidae Orchetypus ceylonicus
Family: Gryllacrididae - Leaf-rolling crickets Brachyntheisogryllacris punicea Diaphanogryllacris aequalis Neanias squamatus Pardogryllacris pardalina Pardogryllacris spuria
Family: Gryllidae - Crickets Sub family:Gryllinae - Field crickets Brachytrypes orientalis Gymnogryllus erythrocephalus Phonarellus humeralis Itaropsis tenellus Gryllus bimaculatus Gryllulus testaceus Gryllulus mitratus Gryllulus configuratus Gryllulus flavus Gryllulus confirmatus Gryllulus bucharicus Gryllulus brevicauda Gryllulus blennus Gryllulus pallipes Gryllodes sigillatus Gryllodes supplicans Gryllopsis falconneti Nemobiodes laeviceps Nemobiodes nigrocephalus Cophogryllus martini Scapsipedus aspersus Scapsipedus ceylonicus Coiblemmus compactus Loxoblemmus equestris Loxoblemmus longipalpis Staphoblemmus humbertiellus Scapsipedoides macrocephalus Scapsipedoides apterus Teleogryllus mitratus Teratodes monticollis Landreva clara Landreva subaptera Jareta insignis Landreva angustifrons Hemilandreva lamellipennis
Sub family:Nemobiinae - Ground crickets
Paranemobius pictus Ptreonemobius concolor Ptreonemobius birmanus Ptreonemobius vagus Ptreonemobius taprobanensis Ptreonemobius fascipes Ptreonemobius csikii Ptreonemobius bicolor Scottia ceylonica Polionemobius taprobanensis Neanias squamatus
Sub family:Trigoniinae
Trigonidium cicindeloides Trigonidium humbertianum Metioche unicolor Metiochodes greeni Metiochodes trilineatus Amusurgus oedemeroides Amusurgus speculifer Paranaxipha ornatipes Trigonidomorpha fuscifrons Homoeoxipha lycoides Anaxipha pubescens Anaxipha longipennis Anaxipha henryi
Sub family:Myrmecophilinae - Ant crickets
Myrmecophila escherichi Myrmecophilellus pilipes
Sub family:Pentacentrinae - Anomalous crickets
Pentacentrus pulchellus Homologryllus depressus
Sub family:Oecanthinae - Tree crickets
Oecanthus indicus Oecanthus rufescens Oecanthus henryi
Sub family:Itarinae
Heterotrypus vicinus Heterotrypus elegans
Sub family:Eneopterinae - Bush crickets
Cardiodactylus praecipuus
Sub family:Podoscirtinae
Madasumma marginipennis Madasumma greeni Madasumma albonotata Madasumma valida Madasumma varipennis Mnesibulus pallipes Euscyrtus hemelytrus Euscyrtus concinnus Euscyrtus necydaloides Euscyrtus laminifer Euscyrtus perforatus Patiscus quadripunctatus
Family:Gryllotalpidae - Mole crickets Gryllotalpa africana
Family:Mogoplistidae - Scaly crickets Cycloptiloides orientalis Ornebius guerini Ornebius varipennis Derectaotus ceylonicus Derectaotus henryi Derectaotus palpatus Ectotoderus ceylonicus
Family:Myrmecophilidae - Ant-loving crickets Myrmecophilellus pilipes Myrmecophilus escherichi
Family:Tetrigidae - Pygmy locusts Andriana hancocki Apterotettix obtusus Cingalotettix pterugodes Cladonotus bhaskari Coptotettix conspersus Coptotettix fossulatus Coptotettix rugosus Coptotettix testaceus Criotettix miliarius Deltonotus subcucullatus Ergatettix dorsifera Eucriotettix tricarinatus Euparatettix parvus Euparatettix variabilis Gavialidium crocodilum Hedotettix attenuatus Hedotettix festivus Hedotettix gracilis Loxilobus acutus Loxilobus novaebrittanniae Paratettix cingalensis Paratettix variegatus Spadotettix fletcheri Systoloderus greeni Tettilobus pelops Tetrix abortus Tettix atypicalis Tetrix discalis Xistrells stylsts
Sub family:Scelimeninae
Criotettix curticornis Criotettix miliarius Criotettix subulatus Eucriotettix tricarinatus Eucriotettix spinilobus Euscelimena gavialis Euscelimena logani Loxilobus acutus Loxilobus acutus acutus Euscelimena logani
Family:Phalangopsidae Sub family:Phalangopsinae - Spider crickets
Arachnomimus annulicornis Arachnomimus bicolor Arachnomimus brevipalpis Arachnomimus nietneri Luzaropsis confusa Luzaropsis ferruginea Luzaropsis henryi Luzaropsis omissa Paragryllodes ceylonicus Paragryllodes gravelyi Seychellsia ceylonica
Family:Podoscirtidae Ceyloria latissima Ceyloria vicina Euscyrtus concinnus Euscyrtus hemelytrus Euscyrtus laminifer Euscyrtus necydaloides Euscyrtus nigrifrons Heterotrypus elegans Homologryllus depressus Madasumma albonotata Madasumma valida Mnesibulus pallipes Patiscus quadripunctatus Pentacentrus pulchellus Poliotrella greeni Prozvenella saussureana Varitrella varipennis
Family:Pyrgomorphidae - Gaudy grasshoppers Aularches miliaris Atractomorpha crenulata Chrotogonus oxypterus Orthacris ceylonica Orthacris filiformis
Family:Stenopelmatidae - Jerusalem crickets Oryctopus lagenipes
Family:Tettigoniidae - Katydids Acrodonta subaptera Paramorsimus robustus Brunneriana ceylonica Brunneriana opaca Cratioma myops Euconocephalus incertus Mecopoda elongata Pseudophaneroptera turbida Vetralla difformis
Sub family:Conocephalinae - Meadow katydids
Ruspolia differens Conocephalus maculatus Conocephalus signatus
Sub family:Pseudophyllinae - True katydids
Cratioma sp. Olcinia sp. Onomarchus cretaceus Sathrophyllia rugosa Zabalius aridus
Sub family:Phaneropterinae - Phaneropterine katydids
Deflorita deflorita Ducetia ceylanica Ducetia japonica Elimaea carinata Elimaea melanocantha Elimaea nigrosignata Himertula marmorata Holochlora brevifissa Letana inflata Molpa bilineolata Phaneroptera gracilis Pseudophaneroptera turbida
References