摘み上げると前胸と中胸を擦り合わせて発音器からギーギー威嚇音を出す。（音声は同一個体から別に録音したものを無声動画に組み込んだので動きと一致しない。）ちなみに死骸でもこの関節を動かすと音が出る。 A japanese white stripe longhorn beetle (Batocera lineolata) squeaking from the prothorax-mesothorax joint. Late-September, 2006 in Japan.

仰向けに引っくり返されるとしばらく擬死（死んだふり）してから起き上がろうとする。必死にばたつかせても短い脚は地に届かない。スロー再生で見ると翅を広げ後転しながら跳ね起きている。翅の下に隠れている腹部背面はこんな毒々しい色だったのか！　右前胸部に付着した血のような赤は、危険を感じた時に脚の関節から分泌される臭い汁。最後は窓の外へ飛び去りました（仏の顔も三度）。 Japanese biggest ladybird (Aiolocaria hexaspilota) sprang up to its feet after being laid down on its back. Slow-motion replay shows the quick backflip in detail. This ladybird species was, when in distress, known to secrete red stinky repellent from leg joints, and you can see the right side of dorsal prothorax stained bloody. Recorded on early-November, 2006. Music : Big Joe Turner - Flip Flop And Fly

Male of the Japanese native cockroach (Periplaneta japonica, family Blattidae). You can see his right side of dorsal prothorax was partially bitten. They are slow in the wild. Early-August 2008 in Japan. 神社にて発見。野良ゴキブリはおっとりしていて少しぐらい突付いても逃げません。前胸背右側に齧られた跡があります。クロゴキブリと迷いましたが、ヤマトゴキブリ♂と教えて頂きました。

These insects are often grouped together at the "flat grain beetles" or "bran bugs." Technically they are the rusty grain beetle, Cryptolestes ferrugineus, the flat grain beetle, Cryptolestes pusillus, and the flour mill beetle, Cryptolestes turcicus. The most common species in Australia is Cryptolestes ferrugineus. All three species are red-brown in colour and about 1.5 - 2 mm long. They are flat and quite shiny and have rather long, slender antennae. The antennae of both male and female rusty grain beetles are about half the length of the body. The antennae of the males of flat grain beetles and flour mill beetles are more than two thirds the length of the body. The prothorax of the rusty grain beetle is narrowed at the back, whereas those of the flat and flour mill beetles are more nearly square. All adults are strong fliers. The larvae are about 3 mm long, white and somewhat flattened. The posterior part of the body is slightly broader than the anterior half. The head and a distinctive forked process at the tip of the abdomen are slightly darkened. The rusty grain beetle is more cold tolerant. Courtesy Department of Agriculture and Food Western Australia. http://www.agric.wa.gov.au/ento