Mexico masamii ( Satô, 1994 ) Yoshitomi, 2019

Yoshitomi, Hiroyuki, 2019, Review of the Asian Thaumastodinae (Coleoptera, Byrrhoidea, Limnichidae), with a phylogeny of the genera, European Journal of Taxonomy 583, pp. 1-45 : 34-37

publication ID

https://doi.org/ 10.5852/ejt.2019.583

publication LSID

lsid:zoobank.org:pub:4F834ADD-57E7-4CE3-B16A-127F1BE4AE14

DOI

https://doi.org/10.5281/zenodo.5386765

persistent identifier

https://treatment.plazi.org/id/03F9EF19-9F77-FFE6-FDC7-F9CB596F2DCB

treatment provided by

Plazi (2019-12-05 14:59:33, last updated by Valdenar 2024-12-20 16:06:54)

scientific name

Mexico masamii ( Satô, 1994 )
status

comb. nov.

Mexico masamii ( Satô, 1994) comb. nov.

Figs 11F View Fig , 18–19 View Fig View Fig

Babalimnichus masamii Satô, 1994: 175 View in CoL .

Babalimnichus masamii – Yoshitomi & Satô 2001: 472 View in CoL View Cited Treatment [larval description]. — Yoshitomi 2014a: 29. — Ono et al. 2012: 47. — Kamezawa 2017: 54.

Material examined

JAPAN • 7 ex.; “ Japan: Honshû Nanaura-kaigan Tachibana, Sado-shi Niigata, 5. vi. 2016 37.986591, 138.234143 Kamezawa H. leg.”; EUMJ GoogleMaps 1 ♂; “[IZ9] Ishijirogawa, Shikinejima, Izu Isls. , Japan , 34°19.409″ N, 139°13.308″ E, ca 16 m, 7. II. 2013, H. Yoshitomi leg.”; EUMJ 1 ♂, 1 ♀, 14 ex.; “ Kariya-kaigan Tokoname-shi Aichi Pref. 17. VIII. 1995, 17. VIII. 1995 H. Yoshitomi leg.”; 1 ♂ and 1 ♀ on slides HY 989, 992–994; EUMJ 1 ex.; “ Zoubigasaki, Murozumi Hikari-shi Yamaguchi Pref., Jpn 28. VII. 2005 Y. Fujitani leg.”; EUMJ 5 ex.; “ Bashayamamura Amami-oshima 3-V-1999 M. Sato leg.”; EUMJ 28 ex.; “ Kawata Okinawa 5-V-1999 M. Sato leg.”; EUMJ 9 ex.; “ Kim-kaigan Okinawa 28- III-1997 M. Satô leg.”; EUMJ 1 ex.; “ Onnason Okinawa-jima 26-28. IV. 2004 M. Sato leg.”; EUMJ 1 ex.; “ Kume-jima Ryukyu 30-IV-2004 M. Sato leg.”; EUMJ 2 ex.; “ Tomori Ryukyus Miyako-jima 7-V-1998 M. Satô leg.”; EUMJ 13 ex.; “ Uganzaki Ishigaki 22-IX-2003 M. Sato leg.”; EUMJ 7 ex., in ethanol; “ Sakaura, Izumo , Shimane 31. VII. 2006 M. Hayashi ”; EUMJ 2 pupae, with larval skins, in ethanol; “ Nahama-kaigan, Nagai, Yokosuka-shi Kanagawa Pref., Japan 6. July 2007 M. Asano leg.”; EUMJ .

Redescription

Male

For a detailed description of the external features, see the original description ( Satô 1994). PW/PL 1.67– 2.22 (1.99); EL/EW 1.27–1.48(1.36);EL/ PL 2.64–3.29 (2.96); EW/PW 1.00–1.18 (1.10);TL/EW1.71– 1.95 (1.82).

Sternite VII ( Fig. 18A View Fig ) bearing about 30 long setae, lacking extra setae; postero-lateral corners short and pointed; median part of caudal margin gently projecting triangularly. Sternite VIII ( Fig. 18B View Fig ) small, slightly sclerotized, Y-shaped. Sternite IX ( Fig. 18C View Fig ) well sclerotized, curved in basal part, shallowly concave at apex; apical plates rather stout, pointed at apices. Aedeagus ( Fig. 18 View Fig D–F) relatively short, asymmetrical; basal piece oval; lateral lobes short, with 3–4 apical setae; median lobe wide, sparsely punctuate in apical part, expanded in apical quarter, gently pointed at apex; ventral plates wide, separated from median lobe, left one long and curved interiorly in apical part, right one short and straight; ML/BL 2.24; ML/LL 2.43.

Female

Sexual dimorphism slight. Sternite VII ( Fig. 18G View Fig ) similar to that of male. Urosternite ( Fig. 18H View Fig ) well sclerotized, T-shaped, with long and slender apodeme. Ovipositor ( Fig. 18I View Fig ) well sclerotized; coxite sparsely punctuate, rather pointed at apices; apex of baculus bifid; approximate ratio of coxite and baculus (n = 1) 1.0:5.9.

Pupae

Body ( Fig. 19 View Fig ) about 1.5 mm, cream-colored, bearing long setae on head, pronotum, elytra and abdomen.

Measurements

Unsexed (n = 20): TL 1.82–2.32 (2.04) mm; PW 0.90–1.10 (1.02) mm; PL 0.45–0.60 (0.52) mm; EL 1.32–1.72 (1.53) mm; EW 1.00–1.30 (1.12) mm.

Distribution

Japan (Honshu, Sadogashima, Izu Islands (Shikine-jima, Kozu-shima), Shikoku, Kyushu, the Ryukyus (Yakushima, Amami-Ôshima, Tokuno-shima, Okinoerabu-jima, Yoron-tô, Okinawa-jima, Irabu-jima, Kume-jima, Miyako-jima, Ishigaki-jima)).

Remarks

I re-examined the specimens from Yonaguni-jima ( Yoshitomi & Arai 2004), and it is clear that they do not represent this species but the preceding one. This is the first record of this species from Kume-jima.

This species has the northernmost distribution (Sado Island) in the subfamily Thaumastodinae ( Kamezawa 2017) .

Biological notes

Overwintering takes place in the larval stage in Chiba Prefecture ( Ono et al. 2012) or the adult stage on the Izu Islands ( Yoshitomi 2014a).

Kamezawa H. 2017. Collecting record of Babalimnichus masamii from Sado Islands. Sayabane, New Series (25): 54. [In Japanese.]

Ono H., Kamezawa H. & Sugaya K. 2012. Record of two seashore beetles from Chiba Prefecture. Sayabane, New Series (5): 47 - 48. [In Japanese.]

Sato M. 1994. Note on the genus Pseudeucinetus Heller and its new relative (Coleoptera, Limnichidae). Special Bulletin of the Essa Entomological Society 2: 173 - 177.

Yoshitomi H. & Sato M. 2001. Description of the larva of Babalimnichus masamii M. Sato (Coleoptera: Limnichidae, Thaumastodinae). Coleopterist's Bulletin 55: 471 - 474.

Yoshitomi H. & Arai K. 2004. Babalimnichus masamii collected from Yonaguni-jima. Coleopterists' News (148): 23. [In Japanese.]

Yoshitomi H. 2014 a. Water beetle fauna of Izu Islands. Sayabane, New Series (16): 26 - 31. [In Japanese, with English summary.]

Gallery Image

Fig. 11. Species of Mexico Spilman, 1972. A. M. borneensis sp. nov., holotype (BPBM). B. M. papuanus sp. nov., holotype (BPBM). C. M. ogasawaraensis sp. nov., holotype (EUMJ). D. M. baliensis sp. nov., holotype (EUMJ). E. M. palauensis sp. nov., holotype (EUMJ). F. M. masamii (Satô, 1994) (EUMJ). G. M. taiwanus (Satô, 1994), paratype (EUMJ). Scale bars: 1.0 mm.

Gallery Image

Fig. 18. Mexico masamii (Satô, 1994), male (A–F) and female (G–J) genitalia (EUMJ). A, G. Sternite VII. B. Sternite VIII. C. Sternite IX. D. Aedeagus, ventral view. E. Aedeagus in dorsal view. F. Aedeagus in right lateral view. H. Urosternite. I. Ovipositor.

Gallery Image

Fig. 19. Pupa of Mexico masamii (Satô, 1994). A. Ventral aspect. B. Dorsal aspect. Scale bar: 1.0 mm.

EUMJ

Ehime University

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Limnichidae

SubFamily

Thaumastodinae

Genus

Mexico