HKWildlife.Net Forum 香港自然生態論壇
遊客:  註冊 | 登錄 | 龍尾 | YouTube | Facebook | English | Library | Blog | 幫助


 
標題: [金龜總科] Onthophagus rectecornutus Lansberge, 1883
PemE
幼蟲
Rank: 2Rank: 2



Insect Expert  
UID 330
Total 276
主題
回覆
精華 1
積分 1237
種子 1237
花蜜 219
閱讀權限 40
註冊 2006-11-2
Pri. Camera: 
來自 Lantau
狀態 離線
發表於 2006-11-7 19:05  資料 短消息 
Onthophagus rectecornutus Lansberge, 1883

[Edited 2 Dec 2006 - Finally identified this specimen Onthophagus rectecornutus Lansberge, 1883 from AFCD insect collection and in the Fauna of British India].  Original posting below:

This Onthophagus sp. was found in a friends kitchen.  I frequently come across less well marked (or armed) individuals but have not been able to itdentify any.  Of the 18 species of Onthophagus I know of in Hong Kong, I have descriptions of only 10 (that leaves 8 species that I have no idea what they look like), this one matches the description of Onthophagus luridipennis Boheman 1858.  I also know this species occurs in diverse habitats such as agricultural land and secondary woodland and scrub (which is the habitat outside the kitchen where it was found).  Can anyone help me confirm (or correct) my identification.  Any help welcome.

Kind regards Paul

[ Last edited by  PemE at 2006-12-2 17:40 ]


圖片: IMG_8050.1.jpg (2006-11-7 19:06, 100.15 K)


本帖最近評分記錄
BWA   2006-11-8 22:48  種子  +3   Interesting!
。方鴻漸。   2006-11-8 19:55  種子  +10   Never Seen Before~~~
colin   2006-11-7 19:34  種子  +10   精品文章!
頂部
littlelittle
蟲后
Rank: 5Rank: 5Rank: 5Rank: 5Rank: 5


UID 172
Total 3471
主題
回覆
精華 2
積分 35318
種子 35318
花蜜 3030
閱讀權限 70
註冊 2006-8-29
Pri. Camera: 
狀態 離線
發表於 2006-11-7 23:14  資料 文集 短消息 
18 species is really attractive! I should put more efforts on digging cow dung.

A very detail Chinese description can be found on p.264 of the book "An Introduction to Scarabaeinae of the World" , 2002,  Chan. According to his description, the pair of horns on male's head greatly curve backward. It is not the case in yours.

In his book, it is named as Onthophagus (Gibbonthophagus) iuridipennis Boeheman, 1858. However, according to the World Scarabaeidae Database, Nov 2005http://annual.sp2000.org/2006/show_database_details.php?database_name=Scarabs,Onthophagus iuridipennis Boeheman, 1858 is a synonym of Gibbonthophagus iuridipennis Boeheman, 1858. Also see this : http://annual.sp2000.org/2006/sh ... p?record_id=1302006
頂部
nadia
成蟲
Rank: 4Rank: 4Rank: 4Rank: 4



UID 253
Total 1981
主題
回覆
精華 0
積分 6856
種子 6856
花蜜 1962
閱讀權限 60
註冊 2006-10-3
Pri. Camera: 
來自 香港
狀態 離線
發表於 2006-11-8 07:14  資料 文集 短消息 
Onthophagus (Gibbonthophagus) iuridipennis Boeheman, 1858 is possibily still the valid name for the species but  it does not seem to be the one shown in Paul's illustration.    To bring more excitement into the discussion, I think there may be at least 20 (identified) + 1 (unidentified) Onthophagus spp. in Hong Kong.

[ 本帖最後由 nadia 於 2006-11-8 09:26 編輯 ]
頂部
littlelittle
蟲后
Rank: 5Rank: 5Rank: 5Rank: 5Rank: 5


UID 172
Total 3471
主題
回覆
精華 2
積分 35318
種子 35318
花蜜 3030
閱讀權限 70
註冊 2006-8-29
Pri. Camera: 
狀態 離線
發表於 2006-11-8 16:39  資料 文集 短消息 


QUOTE:
原帖由 nadia 於 2006-11-8 07:14 發表
......I think there may be at least 20 (identified) + 1 (unidentified) Onthophagus spp. in Hong Kong.

and possibly a number of undescribed in science. Lets work hard for a
Onthophagus hongkongensis or Onthophagus oweni

[ 本帖最後由 littlelittle 於 2006-11-8 16:41 編輯 ]
頂部
PemE
幼蟲
Rank: 2Rank: 2



Insect Expert  
UID 330
Total 276
主題
回覆
精華 1
積分 1237
種子 1237
花蜜 219
閱讀權限 40
註冊 2006-11-2
Pri. Camera: 
來自 Lantau
狀態 離線
發表於 2006-11-8 22:46  資料 短消息 
Not iuridipennis

Thanks Littlelittle and Nadia for the reply, its nice to know others are interested.  Yes the horns are only very slightly curved, though strongly bent backwards.  I will start reading them up again

I forgot to mention the size 9.2mm long.

By the way, for some information on how to find , and some witty reading about Dung Diggers and scarabs, the SCARABS online magazine is quite good, though basically for the Americas. Here are the addresses for the first and last volumes, just change the number from 1 to 14.

http://www-museum.unl.edu/resear ... etter/scarabs_1.pdf

http://www-museum.unl.edu/resear ... tter/scarabs_14.pdf

And yes, dung digging is good.

Kind regards Paul
頂部
littlelittle
蟲后
Rank: 5Rank: 5Rank: 5Rank: 5Rank: 5


UID 172
Total 3471
主題
回覆
精華 2
積分 35318
種子 35318
花蜜 3030
閱讀權限 70
註冊 2006-8-29
Pri. Camera: 
狀態 離線
發表於 2006-11-8 22:52  資料 文集 短消息 
I suspect the 1st one is  Gibbonthophagus iuridipennis which has a pair of horns curved inward and backward as mentioned by Chan. The second one looks like yours, but mine has shorter horns and clypeus may also be different from yours, maybe mine is a less well developed individual.


圖片: Onthophagus1.jpg (2006-11-8 22:52, 113.55 K)



圖片: Onthophagus2.jpg (2006-11-8 22:52, 119.48 K)

頂部
littlelittle
蟲后
Rank: 5Rank: 5Rank: 5Rank: 5Rank: 5


UID 172
Total 3471
主題
回覆
精華 2
積分 35318
種子 35318
花蜜 3030
閱讀權限 70
註冊 2006-8-29
Pri. Camera: 
狀態 離線
發表於 2006-11-9 22:40  資料 文集 短消息 
To make the discussion more interesting, I add another one which I suspect is Gibbonthophagus taurinus. Shape of the pair of horns is different. Size and distribution of the punctures on the clypeus and pronotum are also quite different.

[ 本帖最後由 littlelittle 於 2006-11-9 23:15 編輯 ]


圖片: Onthophagus 3.jpg (2006-11-9 23:02, 111.84 K)

頂部
PemE
幼蟲
Rank: 2Rank: 2



Insect Expert  
UID 330
Total 276
主題
回覆
精華 1
積分 1237
種子 1237
花蜜 219
閱讀權限 40
註冊 2006-11-2
Pri. Camera: 
來自 Lantau
狀態 離線
發表於 2006-11-17 19:36  資料 短消息 
Onthophagus proletarius Harold 1875

Onthophagus proletarius  Harold 1875

I found this one in July.  The description fits very well.  

Black, head and pronotum lightly suffused with metallic lustre; Femora orange; anterior and posterior patches on each elytra yellow orange, basal patch not reaching the inner or outer lateral margins; Antenna club yellow;  Body clothed with short yellow setae; Clypeal margin is entire; Pronotum evenly, finely and closely punctured; Pygidium smooth, punctured; Clypeus front margin round (but straight in the middle) and is separated from the forehead by a curved carina.  Also a longer straight carina between the eyes. Length 6mm

Regards Paul

[ Last edited by  PemE at 2006-11-17 19:40 ]


圖片: [Onthophagus proletarius Harold 1875] IMG_4922.1.jpg (2006-11-17 19:38, 42.78 K)

頂部
 


Untitled Document


當前時區 GMT+8, 現在時間是 2020-10-2 04:17

Powered by Discuz! 5.0.0  © 2006-2008 HKWildlife.Net
Processed in 0.039521 second(s), 9 queries , Gzip enabled
清除 Cookies - 聯繫我們 - HKWildlife.Net - Archiver