바다방울벌레
Caconemobius sazanami (Furukawa 1970)

몸길이는 약 9-10 ㎜이며 흑갈색이다. 다리는 흐린 갈색이다. 성충이 되어도 전혀 날개가 나지 않는다. 해변의 바위 사이에 주로 살며 밤에 나타나 각종 유기물을 먹는다. 바닷물에 뛰어 들어 헤엄도 잘 치며 5 분 이상 잠수도 가능하다. 일본에도 분포한다.

수컷 (Male)

암컷 (Female)

서식처 (Habitat)

Original description:
Parapteronemobius sazanami Furukawa 1970 Kontyû, 38(1): 62, figs. 16-32.

  ("sazanami" means ripples in Japanese).
  Specimens examined: Holotype ♂. X. 25, l962, Manazuru beach; Allotype ♀. same date; 16 paratypes (13♂♀ same date, X. l8, l959, Manazuru beach; 1♀, date uncertain: 1♂, XI. 27, 1936, Udo beach, Miyazaki. Kyushu, S. Nakajima leg.); and some other specimens for morphological study. Long. corp. 8-9 ㎜; Long. fem. post. 5-6 ㎜; Long. ovip. 6-7 ㎜.
  Life color: Brownish black with lustre, legs being pale dirty brown.
  Some additional description in morphology: Somewhat bulky. Head bulkier than in Apteronemobius longipes Chop. Compound eye larger than in Pteronemobius, corresponding to the crepuscular habit, much larger than in Gryllulus. Dextral and sinistral member or mandibles more apart from each other than other Gryllid subfamilies. They are slender than those of Pteronemobius, apex of molar angulated. Ultimate segment of palp. max. with apex neither oblique as in Gryllulus, Cycloptilum, Homeogryllus, Trigonidiines and Calyptotrypes, nor it is cylindrical as in Oecanthus but clavate as in Tettiginiids and Gryllacrids. The evolution must be cylindrical → clavate → cuneate, thus, Blattariae are specialized in this point. The proximal end of trochanter which is jointed with coxa is narrow and curved, and such condition may be related with agile running movement in tidal zone. All the legs are slenderer than in Pteronemobius, the character is shared with Apteronemobius. The first and second tarsal segments are provided with strong setae ventrally. The structure is correlated with running movement. Internal superior end-spine of metaleg tibia is ca. 1/2 of first tarsal segment. while in Apteronemobius longipes it is as long as the segment. The male genitalia is provided with cylindrical ectoparameres as in Nemobius, but they are weaker.

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