| Blaps rynchopetera Fairmaire belongs to the order Coleoptera, the family Tenebrionidae, genus Blaps. This insect has important values which wildly useds in Chinese traditionalmedical. Especially, the secretion of adult insect, as a natural medicine, has been commonlyused for antibacterial, diminish inflammation and anticancer in Yunnan province. In this study, the insect has been investigated and researched that its distribution and utilization in Yunnan, its body shape of all development stages and basic biological characteristics. The study hasorganized the age-specific life table for experiment population, in addition, the study hasdiscussed a research the artificial rearing of the insect.1. Distribution and utilization: The distribution and habitat of Blaps rynchopetera inYunnan was investigated. The results indicated that the insect is distributed in all ofinvestigation sites including 25 counties in 14 districts of Yunnan Province. The relativelycentral distribution area of the insect is in the middle and east of Yunnan plateau. The suitableliving area have the annual average temperature from 13 to 19℃, average annual rainfall from750 to 1100 mm, and altitude from 1500 to 2100 m. The vertical distribution altitude of theinsect is from 760m to 2450m. The adult insects live in farmer's house and sty of livestock.The larvae insects live in loose soil. The insect is not found outside house. Main food for theinsects are grain bran, corn flour, wheat, flour, and etc. Its potential distribution in China wasanalyzed based on indexes of annual mean temperature, rainfall and feeding habitat.Southwestem China is the core distribution area.2. Morphological description: Blaps rynchopetera is one of complete metamorphosisinsects. Its egg is oval shape with white colour. The larva is columnar shape and slight snuffcolor. Pupa is free. Adult is relatively big and black. Female and male insects have similarshapes. Female has a wider somatotype than male's. The bottom of wing for female is obtuse.In contrast, male has a flat and tine shape at the bottom of wing, and there is a setae brush inthe first somite of abdomen.3. Biology characteristics: In laboratory condition, the insect lay eggs from the end ofJanuary to early of December. The egg stage is 8-15 d. In general, the larva has 9-13 instars.The larva stage is 141-213 d. The exarate pupa appears from late June to early September. The prepupal stage is 8-14 d. The pupal stage is 12-24 d. The insects sexually mature in 14-42d andbegin to copulate and lay eggs. The adult stage is over 18 months. In Kunming and Qujingregion, Blaps rynchopetera completes 1～1.5 generation per year. The adult and larva have longlife periods, and the life history is irregular. The insect overwinters in adult and different instarlarvae in soil, then larva pupated in next April. The new adult copulates and lays eggs in lateApril to early December. Adult lay over 2 eggs per day usually. The hatch rate is over 80％inroom temperature. Under constant temperature, the eggs have well hatching result in25℃～28℃. Blaps rynchopetera has clear rhythm. The adult actives in night, and could usedefensive gland to protect itself. The adult and larva prefer to live in wet and dark conditions, and get together.4. The age-specific life table of experiment population: The age-specific life table wasset up in laboratory condition. The survivorship curve belongs to typeⅢ. In its life cycle, larvaperiod has highest death rate, especially after 9th instar. There are maybe 2 reasons caused thehigh death rate. One could be long developmental period in the aged larva phase, another couldbe the mite grows quickly and become the major harm factor in the breeding process.5. The fundamental research on rearing: The vegetable selectivity and un-selectivityexperiment test the food habit of the insect. The results showed that the insect is omnivorouswhich has a wide food choice range. The insect prefers to take food with high water contentand sugar content, simple structure makeup, such as leaf vegetable, melon and fruit, . Theydislike the food with complex structure makeup and dense savour. Rearing test was set up inground substance with sand, sawdust, soil mixed with sand and in no ground substance. Itsnatural habitat soil is control. The result shows that soil mixed with sand has a better breedingeffect than the soil from natural habitat for larva, sand and sawdust can use as groundsubstance. But larva can't be breed in no ground substance. In density experimentation, deathrate is the highest in 96/dm~3, the lowest in 24/dm~3, and middle level in 48/dm~3 and 72/dm~3.The increasesd weight adds with density, increased weight is the highest in 96/dm~3, reachingto 264.6mg.The increased weight were similar in other conditions, between 227.4mg to234.3mg.
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