Amemboa (Amemboides) velaris Polhemus and Andersen
Creators: name: Nakthong, La-Au
name: Vitheepradit, Akekawat
name: Sites, Robert W.
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Gerridae
Amemboa
Amemboa velaris

description: Amemboa (Amemboides) velaris Polhemus and Andersen
Figs. 21, 35
Amemboa (Amemboides) velaris Polhemus and Andersen 1982: Steenstrupia 10: 104−105.
Diagnosis. Males of A. velaris can be distinguished from those of A. perlata by the genital segments as long as or longer than the pregenital part of the abdomen (Fig. 35), whereas A. perlata have the genital segments shorter than the pregenital part of the abdomen (Fig. 34).
Discussion. This species has been recorded from Laos, Thailand, and Vietnam (Polhemus & Andersen 1984, Zettel & Chen 1997, Zettel 1998, Chen et al. 2006). In Thailand, this species has been collected previously in Chiang Mai and Phetchabun provinces (Polhemus & Andersen 1984, Zettel & Chen 1997, Chen et al. 2006). In the Phetchabun Mountain Range, we collected this species from rock pools, leaf packs, and stream margins. This species occurred synoptically with A. aquafrigida at a stream behind the headquarters of Nam Nao NP. Zettel and Chen (1997) recognized populations of A. velaris from Thailand and Vietnam as allopatric subspecies based on the length of the parameres in males and the pilosity on the connexival margin of sternite VII in females. More specifically, specimens from Chiang Mai are referred to as Amemboa velaris velaris. In the same publication, the specimens from Phetchabun Province were referred to as Amemboa velaris intermediate because they exhibited intermediate character states between the two subspecies in Thailand and Vietnam (Zettel & Chen 1997).
Material examined. THAILAND: Loei Province: Phu Rua NP, Sarm Chan Waterfall, 17°29’N 101°20'E, 1147 m, 6-IIII-2011, KU team, C-41 (3 wingless males, 7 wingless females); Phetchabun Province: Nam Nao NP, stream behind visitor center, 16°44'N 101°34'E, 820 m, 9-III-2002, A. Vitheepradit, L-275 (1 winged males); same locality, 3-V-2004, A. Vitheepradit, L-658 (2 winged males, 1 wingless male, 1 winged female, 1 wingless female); same locality, 2-II-2011, KU team, C-26 (1 winged male, 3 wingless males, 6 wingless females); same locality, 20- XII-2012, KU team, C-236, (2 wingless males); Tad Mok NP, Song Nang Waterfall, 16°22’N 101°22'E, 800 m, 30- IIII-2004, A. Vitheepradit, L-654 (1 winged male, 1 wingless female); Tad Mok Waterfall, 16°44’N 101°34'E, 853 m, 3-II-2011, KU team, C-28 (1 wingless male, 3 wingless females); Khao Khor NP, Sridit Waterfall, 16°37’N 100°56'E, 702 m, 11-V-2004, A. Vitheepradit and T. Prommi, L-677 (1 winged female); Phitsanulok Province: Phu Hin Rongkla NP, Mhun Daeng Noi, 16°57'N 101°03'E, 1340 m, 6-V-2003, A. Vitheepradit and T. Prommi, L- 504 (2 winged males, 1 winged female); same locality, 20-I-2012, KU team, C-104 (3 wingless males, 13 wingless females); Phu Hin Rongkla NP, Waterwheel Falls and stream, 16°59’N 101°00'E, 1280 m, 10-III-2002, R.W. Sites, A. Vitheepradit and K. Kirawanich, L-285 (1 winged male); Phu Hin Rongkla NP, Huai Kha Mheun, 16°59’N 101°00'E, 1253 m, 6-V-2003, A. Vitheepradit and T. Prommi, L-505 (1 winged male, 1 winged female); Phu Hin Rongkla NP, Mhun Daeng, 16°57'N 101°03'E, 1250 m, 20-I-2012, KU team, C-105 (5 wingless males, 4 wingless females).
description: Published as part of Nakthong, La-Au, Vitheepradit, Akekawat & Sites, Robert W., 2014, Key to the species of Eotrechinae (Hemiptera: Heteroptera: Gerridae) of Thailand and review of the fauna of the Phetchabun Mountain Range, pp. 47-63 in Zootaxa 3860 (1) on pages 57-58, DOI: 10.11646/zootaxa.3860.1.2, http://zenodo.org/record/287060