Ranatra thai Lansbury, 2012

Tran, A. D. & Polhemus, Dan A., 2012, Notes On Southeast Asian Ranatra Heteroptera Nepidae, With Description Of A New Species From Singapore And Neighbouring Indonesian Islands, Raffles Bulletin of Zoology 60 (1), pp. 101-107 : 102-104

Ranatra thai Lansbury , new status

( Figs. 5, 6 )

Ranatra longipes thai Lansbury, 1972: 334 .

Material examined. — MALAYSIA: Terengganu: 3 males, 1 female, pool at Km. 94 on road from Kuala Terengganu to Kota Bahru , south of Jerteh , 5°32'38.5"N, 102°43'43.9"E, water temp. 26°C, pH 6.7, coll. H. K. Lua, 19 Mar.1992 ( ZRC) . Selangor: 2 males, 2 females, Kuala Selangor and Nature Park , coll. Peter K. L. Ng, K. L. Yeo, Kang Nee & Jeffrey, 15 May 1991 ( ZRC.6.15756– 15759) ; 1 male, 2 females, 1 immature, Kuala Selangor , coll. H. H. Tan & S. H. Tan, Sep.1993 ( ZRC.6.22232) ; 1 male, Selangor Templer Park Lake , coll. D. Kovac, 23 Nov.1995 ( ZRC.6.22229) ; 2 males, 1 female, 2 immatures, Kuala Selangor , site 48, coll. H. H. Tan & S. H. Tan, Sep.1993, Y844 ( ZRC) ; 6 males, 3 females, Sabak Bernam , 43 km to Sg. Besar from Tg. Malim, coll. T. B. Lim, 12 Dec.1994, ( ZRC.6.22233) ; 1 male, 1 immature, Selangor peat swamp forest, coll. H. H. Tan et al., 25 Mar.1994 ( ZRC) ; 13 males, 3 females, pond at Templer Park, N. of Kuala Lumpur, coll. D. A. & J. T. Polhemus, 17 Aug.1985, CL 2071 ( JTPC) . Pahang: 1 male, 1 female, 71 km to Kuantan , coll. B. Tan & G. Sumita, 15 May 1995, TG01 ( ZRC.6.22218) ; 1 male, Kuala Lipis , pool by mud track, coll. K. L. Yeo, 12 Apr.1997, YKL901M ( ZRC.6.22214) ; 3 males, 4 females, pond 54 km SW of Kuantan , coll. D. A. & J. T. Polhemus, 22 Aug.1985, CL 2285 ( JTPC) . Malacca: 8 males, 2 females, Rembia Stream, coll. Fernando, 8 Apr.1960 ( JTPC) ; Johor: 1 male, Kulai , coll. H. K. Lua, 10 Jul.1998, LHK0416 ( ZRC.6.22210) ; 2 males, Pontain stream at the palm estate along the trunk road to Pekan nanas, coll. H. K. Lua, 15 Aug.1985, LHK9548 ( ZRC.6.22220) . VIETNAM: Quang Tri Prov.: 3 males, 3 females, 1 mi. N. of Quang Tri, coll. A. R. Gillogly, 10 Jun.1970, sewage pond ( JTPC) . Phu Yen Prov.: 6 males, 5 females, stream in granite hills on N. side of Ca Pass, 29 km S. of Tuy Hoa on Hwy. 1, 60 m, 12°53'05"N, 109°23'38"E, water temp. 24°C, coll. D. A. Polhemus, J. T. Polhemus & P. Nguyen, 25 Mar.2001, CL 4316 ( JTPC) . Cao Bang Prov.: 1 male, 2 females, stream in rice paddies, 17 km N. of Bac Kan , 205 m [675 ft], water temp. 20°C., coll. J. T. Polhemus & P. Nguyen, 19 Mar.2000, CL 4362 ( JTPC) . Binh Dinh Prov.: 4 males, 5 females, Bala River, on E. side of An Khe Pass, 29 km E. of An Khe on Hwy. 19, 55 m, 13°56'58"N, 108°50'39"E, water temp. 24°C, coll. J. T. Polhemus & P. Nguyen, 12 Mar.2001, CL 4290 ( JTPC) . Quang Ngai Prov.: 5 males, Song Re River at bridge, 114 km NE of Kontum on Hwy. 24, 120 m, 14°44'23"N, 108°33'43"E, water temp. 27.5°C, coll. D. A. Polhemus, J. T. Polhemus & P. Nguyen, 18 Mar.2001, CL 4300 ( JTPC) . Gia Lai Prov.: 4 females, Vôi River, 2.5 km N. of An Khe on Kanat road, 430 m, 13°59'15"N, 108°40'54"E, water temp. 24°C, coll. J. T. Polhemus & P. Nguyen, 14 Mar.2001, CL 4295 ( JTPC) . Dong Nai Prov.: 2 males, 3 females, Nam Cat Tien National Park , Muoi Que stream, coll. H. H. Tan et al., 7 May 2001, THH0121 ( ZRC) ; 1 male, 4 females, Nam Cat Tien National Park, Trai River , coll. H. H. Tan et al., 11 May 2001, THH0130 ( ZRC) . THAILAND: Chiang Mai Prov.: 2 males, 1 female, Fang Dist., ponds at Fang Horticultural Station , 500 m, coll. J. T. & D. A. Polhemus, 15 Nov.1985, CL 2201 ( JTPC) ; 5 males, 10 females, stream 10 km NW of Mae Rim , coll. D. A. & J. T. Polhemus, 19 Nov.1985, CL 2204 ( USNM) .

Discussion. — Lansbury (1972) described the subspecies Ranatra longipes thai based on specimens from various localities in Thailand. Our analysis of male paramere structure clearly indicates that whereas specimens of nominate R. longipes longipes from Singapore, Java and Borneo share common character states, including an incipient subapical tooth on the inner margin of the apical hook of the paramere and numerous small spinules along the inner circumference of this hook ( Figs. 1–4 ), specimens from Thailand corresponding to Lansbury’s subspecies have a more rounded and expanded tip on the apical hook, lack the incipient tooth, and possess a different and more limited pattern of spinules ( Figs. 5, 6 ). On the basis of these differences, we herein elevate Ranatra longipes thai to full species status.

Figures

Figs. 1–8. Ranatra species, male left parameres with details of paramere apex. 1, 2: R. longipes longipes, specimen from Indonesia, Borneo, East Kalimantan (CL 2092). 3, 4: R. longipes longipes, specimen from Singapore, Nee Soon Swamp Forest (Y843). 5, 6: R. thai, specimen from Thailand, Chiang Mai Prov (CL 2201). 7, 8: R. rafflesi, specimen from Singapore, Seletar Reservoir (TAD0830).