Foreword: Let's talk about the red-backed shovel today! There are two main reasons for the choice of this variety, one is that there is a difference between the domestic classification and the Japanese classification; the other is a little red in the black bush (insect), a rare colored variety in the genus Dorcus, and the blood-red elytra can be described as beautiful, which is really beautiful and textured.
<h1>Classification differences between China and Japan</h1>
China:
The red-backed spade is divided into three subspecies (according to the "Chinese Spade Armor 2"): the original subspecies, the South Yunnan species, and the undeclared Yunnan Southeast Asian species (origin Yunnan).
Dorcus arrowi arrowi: originally known as the subspecies, native to western Yunnan (Tengchong, Gongshan) and north-central Myanmar;
Dorcus arrowi magdeleinae: South Yunnan subspecies, native to southern Yunnan (Xinping, Yuxi, Dali, Jinping, Banna) and northern Vietnam (west of Shaba), the original maggus magdeleinae from an independent variety to one of the subspecies of the red-backed spade;
Dorcus arrowi ssp: Southeast Asian species of Yunnan (native to Yunnan).
Japan:
In 2015, Bekuwa 54 integrated shovels and spades, which also made adjustments to the red-backed spade and subsordinated into 4 subspecies: the original subspecies, the northern Thai subspecies, the northern Vietnamese subspecies (South Yunnan subspecies), and the central Vietnamese subspecies. In 2018, Bekuwa68 was adjusted to add 2 new subspecies: the Kachin subspecies and the Vietnamese sand climb subspecies. There are a total of 6 subspecies before and after this.
Dorcus arrowi arrowi: originally a subspecies, native to western Yunnan and north-central Myanmar;
Dorcus arrowi magdeleinae: Subspecies of Northern Vietnam, native to southern Yunnan and northern Vietnam (i.e., the domestic South Asian species), formerly Magdalene spade;
Dorcus arrowi nobuhiroi: Northern Thai subspecies, native to northern Thailand, formerly the Magdalene spade subspecies (Thai red-backed spade);
Dorcus arrowi lieni: Vietnamese Central Asian species, native to central Vietnam, formerly subspecies of Magdalene spade;
Dorcus arrowi katctinensis: Kachin subspecies, formerly independent Kachin knife spade (Dorcus katctinensis) was demoted to the red-backed spade subspecies, the subspecies name refers to the northern Myanmar state of Kachin;
Dorcus arrowi ssp: Vietnamese Sapa subspecies, unofficially named new subspecies, native to the Sapa region;
< h1 class= "ql-align-center" > the South Asian species of the red-backed spade and the Subspecies of Kachin</h1>
Here we select two originally independent varieties of red-backed knife shovel Yunnan South Asian species and red-backed knife spade Kachin subspecies to briefly introduce.
Red-backed knife spade Yunnan South Asian species (Dorcus arrowi magdeleinae): Red-backed knife spade Yunnan South Asian species - Southern Yunnan red-backed knife spade Breeding and breeding - Southern Yunnan red-backed knife life habits science popularization - Roche worm society
It is found in western Yunnan and north-central Myanmar.
There is basically no difference from the original subspecies, the central convex part of the leading edge of the large male head shield is more prominent, the leading edge is only slightly concave, and the small teeth within the main inner teeth of the large jaw are more slender and discrete. The dorsal plate of the anterior chest is typical of the spade pattern, straight and inclined downwards. Compared with the relatively slender body, the hands and feet of the red-backed spade Yunnan South Asian species are also quite long. The male elytra are shiny and very shiny.
Females have well-angled eye margins and two large, striking protrusions on their heads, similar to males, with dark red elytra wings with the same intense luster.
Body length range: ♂ 40~66mm; ♀ 32~33mm (Note, this data is from the "Chinese Spade Armor 2"), the actual individual data collected in the wild should be larger than this size.
Red-backed spade Yunnan South Asian species
Red-backed spade Kachin subspecies (Dorcus arrowi katctinensis): Red-backed spade Kachin subspecies - Kachin knife spade armor breeding and breeding - Kachin knife spade life habits science - Roche worm society
The main habitat is the northern region of Myanmar, with a recorded individual of about 57.3 mm, originally an independent species of Kachin knife spade, which was re-examined in 2018 and relegated to a subspecies of red-backed knife spade.
It is quite similar to the Southeast Yunnan species produced in Yunnan, with a thick jaw, giving a sense of strength, a short and compact body, and the elytra wings of male and female insects range from red to black, even the offspring of the same parent species are different in color, but they are relatively black.
Bekuwa breeding record: 57.0 mm
Red-backed spade Kachin subspecies
Postscript: To be precise, there is no serious disagreement between China and Japan over the red-backed spade, and the Japanese side has gradually subspecies of the red-backed spade on the basis of the "Chinese Spade Armor 2". The new Kachin subspecies added in 2018 has been proposed in the "Chinese Spade Armor 2" that this species may be a geographical type of red-backed spade rather than a stand-alone species.
bibliography
HUANG Hao & CHEN Changqing. Chinese Spade Armor 2[M]. Taiwan: Formosa Ecology, 2013. 356
Bekuwa54.2015.17/ Bekuwa68.2018.Japan: Mushisha
If there is any error in the above, I hope that all the insect friends will correct it, thank you for reading!
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<h1 class="ql-align-center">End</h1>