Amemboa (Amemboa) cristata Polhemus and Andersen

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, Zootaxa 3860 (1), pp. 47-63 : 54

publication ID	https://doi.org/10.11646/zootaxa.3860.1.2
publication LSID	lsid:zoobank.org:pub:B9713C6D-BC3B-4EF2-8495-8BDCD535A80D
DOI	https://doi.org/10.5281/zenodo.6137515
persistent identifier	https://treatment.plazi.org/id/03DF879B-FFCD-FFD7-09C9-98674ADE34C4
treatment provided by	Plazi (2016-04-17 14:33:21, last updated 2024-11-26 21:50:31)
scientific name	Amemboa (Amemboa) cristata Polhemus and Andersen
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Amemboa (Amemboa) cristata Polhemus and Andersen View in CoL

Figs. 11 View FIGURES 8 – 21 , 25 View FIGURES 22 – 35

Amemboa (Amemboa) cristata Polhemus and Andersen 1984 View in CoL : Steenstrupia 95−97.

Diagnosis. Males of A. cristata have the pygophore with a pair of large posterolateral lobes and a bifid tip ( Fig. 25 View FIGURES 22 – 35 ). Further, the male profemur has two elongate hair patches ( Fig. 11 View FIGURES 8 – 21 ), whereas A. javanica has a single hair patch and A. aquafrigida and A. speciosa each have three hair patches. Males of A. cristata have a proximally incrassate profemur, whereas A. brevifasciata has an unmodified proximal half of the profemur. Males of A. cristata lack a mid-ventral profemoral tumescence beyond the proximal hair patch, whereas A. riparia has a well-developed tumescence.

Discussion. Amemboa cristata has been recorded from China, Malaysia, Thailand, and Vietnam ( Polhemus & Andersen 1984, Zettel et al. 2007). In Thailand, this species has been collected previously from Chaiyaphum, Chiang Mai, Kanchanaburi, Krabi, Lampang, Mae Hong Son, Phetchabun, Phrae, Sara Buri, and Satun provinces ( Polhemus & Andersen 1984, Zettel & Chen 1997, Vitheepradit 2000). In this study, this species was collected at the margin of streams throughout the mountain range.

Material examined. THAILAND: Loei Province: Amphur Phu Rua, Plan Ba Waterfall, 17°23'N 101°22'E, 649 m, 10-V-2004, A. Vitheepradit and T. Prommi, L-675 (2 winged males, 4 winged females); Phetchabun Province: Nam Nao NP, Sum Ma Cow, 16°41'N 101°40'E, 562 m, 2-II-2011, KU team, C-24 (2 winged males, 53 winged females, 63 wingless females); same locality, XII-2012, KU team, C-238 (2 winged males, 16 wingless females); Nam Nao NP, Stream behind visitor center, 16°41’N 101°40'E, 562 m, 2-II-2011, KU team, C-26, (1 wingless male); same locality, 20-XII-2012, KU team, C-236 (4 winged males, 14 wingless males, 1 winged female, 20 wingless females).

References

Polhemus, J. T. & Andersen, N. M. (1984) A revision of Amemboa Esaki with notes on the phylogeny and ecological evolution of eotrechine water striders (Insecta, Hemiptera, Gerridae). Steenstrupia, 10, 65 - 111.

Vitheepradit, A. (2000) The aquatic and semiaquatic Heteroptera of the Phu Pan and Phetchabun mountain ranges of Thailand. M. S. Thesis. University of Missouri, Columbia, Missouri, USA. [total page number not cited]

Zettel, H. & Chen, P. - P. (1997) Three new taxa of Amemboa ESAKI, 1925, from Thailand and Vietnam. Annales Historico- Naturales Musei Nationalis Hungarici, 89, 93 - 101.

Figures

FIGURES 8 – 21. Left forelegs of male Amemboa. (8) A. aquafrigida, (9) A. armata, (10) A. brevifasciata, (11) A. cristata, (12) A. heissi, (13) A. incurvata, (14) A. javanica, (15) A. laotica, (16) A. prostata, (17) A. riparia, (18) A. schwendingeri, (19) A. speciosa, (20) A. perlata, (21) A. velaris.

FIGURES 22 – 35. Terminal abdominal segments of male Amemboa. (22) A. aquafrigida, (23) A. armata, (24) A. brevifasciata, (25) A. cristata, (26) A. heissi, (27) A. incurvata, (28) A. javanica, (29) A. laotica, (30) A. prostata, (31) A. riparia, (32) A. schwendingeri, (33) A. speciosa, (34) A. perlata, (35) A. velaris.