Marumba spectabilis (Butler, 1875)

Marumba spectabilis (Butler, 1875) is one of 6 species of Marumba that found from Vietnam: Marumba cristata (Butler, 1875), Marumba dyras (Walker, 1856), Marumba gaschkewitschii (Bremer & Grey, 1853), Marumba saishiuana Okamoto, 1924, Marumba spectabilis (Butler, 1875) and Marumba sperchius (Ménétriés, 1857). The species Marumba spectabilis (Butler, 1875) and Marumba saishiuana Okamoto, 1924 very similar in shape of wings as well as marking on on the wings.

Marumba spectabilis (Butler, 1875) - Photographed by Cuong Do

Marumba spectabilis (Butler, 1875) moving its wings at night

Cypa decolor (Walker, 1856)

There are 2 species of genus Cypa that found from Vietnam, Cypa decolor (Walker, 1856) and Cypa enodis Jordan, 1931. They are very similar and the characteristic to separate them is the hind wings structure. Cypa decolor (Walker, 1856)  found in South of Vietnam while Cypa enodis Jordan, 1931 found in North Center of Vietnam.
Cypa enodis Jordan, 1931 found in both pristine and disturbed forests with elevation from 700 to more than 1000m.

Cypa decolor (Walker, 1856) - photographed by Cuong Do

Cephonodes hylas (Linnaeus, [1771])

Cephonodes hylas (Linnaeus, [1771]) is a wide distribute and common species, they have been recorded from Near East, Middle East, Africa, India, China, Japan, South East Asia and Australia. They are bee mimic moth and day flying insects with hyaline wings are not same to any other members of Sphingidae.
There are 2 species of the genus were found in Vietnam, the second species smaller: Cephonodes picus (Cramer, 1777)

Cephonodes hylas (Linnaeus, [1771]) - photographed by Ly Phu Tai, Bao Lam, Bao Loc, Lam Dong Province

Dahira obliquifascia (Hampson,1910)

Dahira obliquifascia (Hampson,1910) is a wide distribute species of Indochina region, the species found also in South China and South of Thailand as well. This species and Dahira rubiginosa Moore, 1888 are two only members of the genus that were recorded for fauna of the country. Not so common locally, the species found in vary of elevation and also be recorded in disturbed forests.

Dahira obliquifascia (Hampson,1910) - photographed by Cuong Do

Sphinx centrovietnama Brechlin, 2015

Sphinx centrovietnama Brechlin, 2015 is a new described species, the holotype of the species was found from Ngoc Linh, Kon Tum Province. It is the second species of the genus found in Vietnam, the first recorded species of the genus is Sphinx oberthueri (Rothschild & Jordan, 1903) maybe somewhere around Fansipan Mountains,  Dr. Ian Brechlin proposed that it never be recorded officially from Vietnam or misidentified from S. centrovietnama because their differences are not easy to be recognized.

Sphinx centrovietnama Brechlin, 2015 - photographed by Cuong Do

Neogurelca hyas (Walker, 1856)

Neogurelca hyas (Walker, 1856) is wide distributed species however it is not common locally. The species was found from India to Indochina, Japan and Indonesia.
In Vietnam, this species was record in disturbed forests with elevation about 500-700m.

Neogurelca hyas (Walker, 1856) - photographed by Cuong Do

Rhodoprasina callantha Jordan, 1929

Rhodoprasina callantha Jordan, 1929 is one of two members of the genus Rhodoprasina that found from Vietnam. The species Rhodoprasina callantha Jordan, 1929 is more common (about Indochina,  Yunnan and Bhutan)  and wide distributed while the other smaller species: Rhodoprasina winbrechlini Brechlin, 1996 is quite rare and found only from North East of Vienam and Yunnan, China.
Despite of  more wide distribute, Rhodoprasina callantha Jordan, 1929 is not common locally, they found in good forests with elevation from 400 to more than 1000m.

Rhodoprasina callantha Jordan, 1929 - photographed by Cuong Do

An undescribed species of genus Clinterocera

This is an unnamed species of Clinterocera genus and close to Clinterocera jucunda Westwood, 1874 that found from North Vietnam, North Thailand and Laos. Among 27 species of the genus there are only 5 known species that already be found from Vietnam: Clinterocera davidis Fairmaire, 1878; Clinterocera discipennis Fairmaire, 1889; Clinterocera jucunda Westwood, 1874; Clinterocera raui (Paulian, 1961); Clinterocera rufithorax Moser, 1901.
I am not an expert of Cetoniinae but the species is so beautiful and I really want to make a description of it; I hope I will have an opportunity to give it a science name in the near future.

Unnamed species of Clinterocera - photographed by Cuong Do

Prosopocoilus astacoides karubei Nagai, 2000

Prosopocoilus astacoides karubei Nagai,2000 was described based on materials that collected from Lam Dong Province, South Center of Vietnam. It is the second subspecies of the species found in Vietnam, other wide distribute subspecies is Prosopocoilus astacoides castaneus (Hope & Westwood, 1845), found in North of Vietnam and very common in Ha Giang Province. Not same to the subspecies Prosopocoilus astacoides karubei only found from type location, Prosopocoilus astacoides castaneus found also in Thailand, Myanmar, India and Laos, maybe also in South China.
The subspecies Prosopocoilus astacoides karubei Nagai,2000 named after Mr. Haruki Karube, Kanagawa Museum of Nature History, who is well known with his publication on dragonfly of South East Asia.

 
 Small male of Prosopocoilus astacoides karubei Nagai,2000 - photographed by Nguyen Ba Quang

Large male of Prosopocoilus astacoides karubei Nagai,2000 - Photographed by Nguyen Quang Thai

Trachyzulpha frushtorferi varia Gorochov, 2014

Trachyzulpha frushtorferia varia Gorochov, 2014 was original described based on materials that collected from Kon Tum Province, South Center of Vietnam. The holotype of the subspecies was collected from Kon Plong, Mang Canh with elevation about 1200m. It is the first time this subspecies was recorded from Bidoup, Lam Dong Province, South Center of Vietnam. It was attracted by light trap in the locality with elevation about 1650m. It is easy to understand about the distribution because of connection of two forest mountain areas in South Center of Vietnam.
Species of Trachyzulpha found in tropical forests in Indo-Malay area, the genus was described based on the species T. frushtorferia from Java, Indonesia. The latter second species was found from Tonkin, North Vietnam: T. annulifera. Today, Trachyzulpha frushtorferia was found from South China and South East Asia. In Vietnam, there only 2 species of the genus were recorded: T. frushtorferia and T. annulifera.
They are really beautiful and strange species of Grasshopper with the lichen mimic form, they fround in pristine tropical forest.

Trachyzulpha frushtorferia varia Gorochov, 2014 - photographed by Cuong Do, 2016 in Bidoup National Park, Lam Dong Province