📸 PhotoPhoto: Arpingstone · Public domain · Wikimedia Commons Source
Two-spotted cricket
Gryllus bimaculatus (Two-spotted cricket · フタホシコオロギ)
Not Evaluated (NE) on the IUCN Red List yet.
💡 Everyday Comparisons for Size, Mass & Speed
- 💡 Its body length of 2.9 cm is similar to the diameter of a Korean 500-won coin (2.65 cm) (Comparison).
- 💡 Reared commercially, adults can be seen year-round and males make a high-pitched 'rit—rit—rit—' calling sound (National List of Species of Korea).
Reference standards: coach bus ~12 m, mid-size car ~4.9 m, compact car ~1 t, basketball hoop 3.05 m, credit card 8.56 cm.
📖 1. Overview
The two-spotted cricket is a cosmopolitan cricket introduced to Korea and raised for commercial purposes.
🦴 2. Anatomy & Morphology
Its body is 24–29 mm long and glossy black. There is a distinct pair of yellow spots on both sides at the base of the forewings, which fully cover the abdomen. The female's ovipositor is 14–15 mm long.
🔍 3. Ecology & Behavior
Adults are observed year-round. Males produce a continuous series of fairly strong, high-pitched chirps sounding like 'rit—rit—rit—.'
🇰🇷 4. Connection to Korea
It is a cricket introduced to Korea and reared for commercial purposes (National List of Species of Korea).
📚 Sources & References
- • IUCN Red List: not evaluated (NE) — cross-checked with the Wikidata conservation-status entry
- • catalogueoflife.org — 3HGL5
- • 국가생물종목록(국립생물자원관) ktsn 120000037603 — https://species.nibr.go.kr/home/mainHome.do?cont_link=009&subMenu=009002&contCd=009002&ktsn=120000037603
- • wikidata.org — Q546382
- • commons.wikimedia.org — File:African.field.cricket.arp.jpg
- • species.nibr.go.kr — mainHome.do
- • Silhouette: PhyloPic — Thomas Hegna · Public Domain Mark 1.0 (Congeneric silhouette — Gryllus)
Recorded dimensions are widely cited representative estimates from public literature and may vary by study or specimen.