Traditionally used for
- Menstrual & women's health
- Skin
Cautions & contraindications
- Pregnancy
- Toxic — professional use only
☯ TCM Properties
Disperses stagnant Blood, regulates menstruation and removes toxin
Traditional Chinese Uses
Hong Niang Zi is the dried body of the red cicada Huechys sanguinea. Bitter and neutral (and toxic), it disperses stagnant Blood, regulates menstruation, breaks accumulations, and resolves toxin. It is a harsh insect medicinal used both externally and internally: applied topically to scrofula, ringworm (tinea) and stubborn sores, and taken internally (in very small amounts) for amenorrhea and masses from Blood stasis. It also has a folk reputation for treating rabid-dog bites.
Because it is toxic, it is prepared as pills or powder in tiny doses and used only briefly; it is contraindicated in pregnancy and in weak or deficient patients, and inappropriate for casual use. Handling and internal administration require caution, and topical use is generally preferred. Modern practice uses it rarely and only under expert supervision.
Relationships
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Botanical Description
Hong Niang Zi is the dried whole body of the cicada-beetle Huechys sanguinea De Geer (Hemiptera: Cicadidae), a brightly coloured Asian cicada widespread in southern China, Indochina, and the Malay archipelago. Adults are 15-25 mm long with shining black wings and a vivid red to orange-red abdomen and thorax. In classical TCM the insect is collected in summer, threaded on bamboo strips, and dried. It is considered acrid, bitter, and toxic, and was used externally to disperse blood stasis, transform masses, and treat indurations, scrofula, and skin conditions; internally it has been used in very small doses as an emmenagogue and to dispel parasites. Because of its toxicity and the availability of safer substitutes, its modern clinical use is rare and tightly restricted in mainland Chinese practice.
Active Constituents
Uracil, xanthine, hypoxanthine and uridine
Free purine and pyrimidine bases and nucleosidesConcentration: measured by RP-HPLC across ten animal drugs; the absolute contents differ markedly between species and are used as identity markers rather than as dose-relevant actives
These water-soluble nucleobases and nucleosides are the only chemically defined constituents of Huechys sanguinea that have been quantified in the published literature. They were determined in order to distinguish the drug chromatographically from nine other animal medicinals, not because any pharmacological activity has been attributed to them here. They are markers of identity, not actives.
⚠ Drug Interactions
Mylabris (Ban Mao, Mylabris phalerata / M. cichorii) and Epicauta species substituted or mixed into Hong Niang Zi
This is the central hazard of the drug and it is a substitution hazard, not a pharmacological one. Chinese pharmacognosy texts have long asserted that Hong Niang Zi contains cantharidin, but a 2025 integrated authentication study that combined morphology, COI DNA barcoding and chromatographic quantification across Mylabris cichorii, Epicauta aptera and Huechys sanguinea found marked interspecific variation, with cantharidin abundant in the two blister beetles and absent from Huechys. The failure of early workers to extract cantharidin from Huechys by the cantharides procedure points the same way. The consequence is arithmetic: the internal dose of Hong Niang Zi is around 0.15-0.3 g of powdered insect, many times the pharmacopoeial internal dose of Mylabris, which is a fraction of a tenth of a gram precisely because Mylabris is loaded with cantharidin. If a Hong Niang Zi prescription is filled with blister beetle, the patient receives a large multiple of a therapeutic cantharidin dose. Huechys is one of the toxic and potent Chinese materia medica for which microscopic authentication methods have been developed specifically because confusion within this group has caused serious medical incidents in China and elsewhere.
Clinical note: Insist on authenticated material and reject any batch not identified to species. Hong Niang Zi is a red-and-black cicada, Mylabris a yellow-and-black-banded beetle - they are not confusable visually if anyone looks, but powdered material is. If a patient on Hong Niang Zi develops haematuria, dysuria, oral or gastrointestinal burning or priapism, stop the herb immediately and investigate for cantharidin exposure.
Lycorma delicatula (the classical Chu Ji) dispensed as Hong Niang Zi
A name conflation carried in the classical record. Ben Cao Gang Mu treats Hong Niang Zi as a synonym of Chu Ji, the insect of the Ailanthus (chou chun) tree, and modern Chinese materia medica identify that Chu Ji as the fulgorid planthopper Lycorma delicatula. The commercial Hong Niang Zi of today is a cicada, Huechys sanguinea, together with the congeners H. philaemata and a short-winged form. The two are in different families and share only the classical name and the red colouring. Neither has a well characterised phytochemistry, so a substitution is not obviously more or less toxic - it simply means the drug given is not the drug researched.
Clinical note: When reading classical indications for Chu Ji, do not assume they were written about Huechys sanguinea. Specify the binomial on the prescription.
Anticoagulant and antiplatelet drugs (warfarin, direct oral anticoagulants, aspirin, clopidogrel)
Hong Niang Zi is used to disperse stagnant blood and regulate menstruation. No coagulation or platelet study of Huechys sanguinea has been published, and the drug's chemistry is essentially uncharacterised, so there is no measured effect behind this entry.
Clinical note: A category-based caution only. The dominant concerns with this drug are its declared toxicity at the prescribed dose and the risk of misidentification.
Evidence Tier
Limited evidence · 1 studyRecorded studies by study design, strongest design at the top. This is a study-design tier only, not a GRADE rating: it does not weigh risk of bias, consistency or precision.
Systematic review / meta-analysis
0
Randomized controlled trial
0
Other clinical trial
0
Observational / case report
0
In vitro / animal
1
0 verified · 1 unverified
Other / unclassified
0
Verified: design read from PubMed for a DOI that resolves to the cited paper Unverified: taken from the study's recorded description
Clinical Studies
Cytotoxicity and L-amino acid oxidase activity of crude insect drugs
Buffer, methanol and ethyl acetate extracts of 26 insect drugs were screened for cytotoxicity against HeLa cells by dye uptake and for L-amino acid oxidase activity. The buffer extracts of Tabanus, Mylabris and Huechys showed potent cytotoxic activity. This is a screening result in one cancer cell line and carries no implication for clinical use; it is included because it is one of very few experimental studies to have tested Huechys sanguinea at all.
Historical Texts
Ben Cao Tu Jing
Northern Song dynastyBen Cao Gang Mu
Ming dynastyChinese materia medica processing (pao zhi) tradition
Ming to Qing dynastiesReferences
- Qu L, Zhu F, Han Q, Chen G, Liu Y, Li Y, Lei C, Zhan C, Liu Y, Du XD, Hou R, Liu Z. Characterization of Mylabris cichorii, Epicauta aptera, and Huechys sanguinea by morphological examination, DNA barcoding identification and chromatography analysis methods . Microchemical Journal (2025) [DOI]
- Xia L, Bai LP, Yi L, Liu BB, Chu C, Liang ZT, Li P, Jiang ZH, Zhao ZZ. Authentication of the 31 species of toxic and potent Chinese Materia medica (T/PCMM) by microscopic technique, part 1: Three kinds of toxic and potent animal CMM . Microscopy Research and Technique (2007) [DOI]
- Liu L, Jin R, Xu G. HPLC determination of uracil xanthine, hypoxanthine and uridine in species of animal drugs . Zhongguo Zhong Yao Za Zhi (China Journal of Chinese Materia Medica) (1999)
This information is for educational purposes only and is not intended to replace professional medical advice. Always consult a qualified healthcare provider before using any herbal remedy, especially if you are pregnant, nursing, or taking medications.
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