Megadytes ducalis is a species of water beetle in the family Dytiscidae. With a length of 4.75 cm (1.9 in), it is the largest species in the family.[2] Until recently, the species was only known from a single specimen that was collected in the 1800s from Brazil,[3] but more specimens were discovered in 2019.[4]
The first specimen of M. ducalis was collected in the 1800s from an unknown locality in Brazil.[3] Rumors indicate it was found in the bottom of a canoe in the Amazon.[2]
In 2019, a study reported 10 additional specimens (including the first female of the species), all collected from the end of the 19th century, discovered incidentally in various historical collections. While the original holotype lacked any location data, the new specimens all indicate that they were collected in Santo Antonio da Barra (now known as Condeuba) in the southern part of Bahia, Brazil. Villagers in the region were involved in insect trade, capturing the much sought after specimens of Hypocephalus armatus found around the region.[4]
As a consequence of the lack of recent records, the IUCN lists it as extinct.[1] Considering the absence of information about the species and the limited studies conducted on water beetles in Brazil, it might still survive.[3]
Megadytes ducalis is a large and robust beetle with total length ranging from 42.9 to 47.7 mm. It is distinctly larger than congeners such as M. lherminieri and M. magnus, and not as broadly oval in shape as them. The two sexes of M. ducalis are externally similar, except for females being shiny without any signs of striae on the dorsal surface, and lacking protarsal disks and yellow setae on ventral surface of mesotarsomere I. [4]
Dytiscidae in general are aquatic and are predators as both adults and larvae.[5]
This species appears to have a restricted distribution in the cerrado of Western Brazil.[4]
Megadytes ducalis is a species of water beetle in the family Dytiscidae. With a length of 4.75 cm (1.9 in), it is the largest species in the family. Until recently, the species was only known from a single specimen that was collected in the 1800s from Brazil, but more specimens were discovered in 2019.
Megadytes ducalis adolah kumbang dari famili Dytiscidae. Spesies ko juo marupokan bagian dari ordo Coleoptera, kelas Insecta, filum Arthropoda, dan kingdom Animalia.
Larva kumbang iko biasonyo panjangnyo sekitar 1–5 cm.
Megadytes ducalis adolah kumbang dari famili Dytiscidae. Spesies ko juo marupokan bagian dari ordo Coleoptera, kelas Insecta, filum Arthropoda, dan kingdom Animalia.
Megadytes ducalis is een keversoort uit de familie waterroofkevers (Dytiscidae). De wetenschappelijke naam van de soort is voor het eerst geldig gepubliceerd in 1882 door Sharp.[1]
Bronnen, noten en/of referenties
Megadytes ducalis là một loài bọ cánh cứng thuộc họ Dytiscidae. Nó là loài đặc hữu của Brasil.
Bài viết liên quan đến phân họ côn trùng cánh cứng Dytiscinae này vẫn còn sơ khai. Bạn có thể giúp Wikipedia bằng cách mở rộng nội dung để bài được hoàn chỉnh hơn.
Megadytes ducalis là một loài bọ cánh cứng thuộc họ Dytiscidae. Nó là loài đặc hữu của Brasil.
