Rhyacobates gongvo Tran & Yang 2006
Creators: name: Tran, A. D.
name: Nguyen, X. Q.
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Gerridae
Rhyacobates
Rhyacobates gongvo

description: Rhyacobates gongvo Tran & Yang, 2006
(Figs. 41, 42)
Rhyacobates gongvo Tran & Yang, 2006: 16 –19, Figs. 17–25, 28 (type locality: Sa Pa, Lao Cai Prov., Vietnam).
Material examined. For holotype and paratypes, see Tran & Yang (2006).
Others: VIETNAM: Lao Cai Prov.: 1 female (apterous), Sa Pa, Nam Sai, Seo Nam Sai stream 1, 22°15.761’N 103°55.909’E, 844 m asl., coll. Dinh N.H. et al., 24 October 2012, DNH12.09 (ZMHU); 1 female (apterous), Sa Pa, Nam Sai, Seo Nam Sai stream 2, 22°14.67’N 103°59.541’E, 469 m asl., coll. Dinh N.H. et al., 24 October 2012, DNH12.10 (ZNHU); 6 males, 5 females (apterous), 2 males (macropterous, de-alated), Sa Pa, Ban Ho, Ban Den, Nam Pu stream (feeder stream of Muong Hoa stream), 22°15.709’N 103°58.054’E, 416 m asl., coll. Tran A.D. et al., 29 May 2013, TAD1316 (ZMHU); 1 male, 2 females (apterous), Sa Pa, Thanh Phu, Nam Cang stream, 22°15.401’N 103°58.866’E, 398 m asl., coll. Tran A.D. et al., 26 October 2013, TAD1359 (ZMHU); 13 males, 4 females (apterous), Sa Pa, Ban Ho, Nam Pu stream (feeder stream of Muong Hoa stream), site 1, at lower section, 22°15.778’N 103°58.270’E, 404 m asl., coll. Tran A.D. et al., 26 October 2013, TAD1361 (ZMHU); 1 female (apterous), Sa Pa, Cat Cat, Ho stream (feeder stream of Muong Hoa stream), 22°19.546’N 103°49.880’E, 1233 m asl., coll. Tran A.D. et al., 27 October 2013, TAD1366 (ZMHU).
Size. Males, length 6.2–6.5 (allotype 6.5), width 1.88–2.20 (apterous), length 6.4, width 1.97 (macropterous, de-alated); females, length 7.8–8.3 (holotype 8.3), width 2.52–2.67 (holotype 2.52) (apterous), length 7.5, width 2.44 (macropterous, de-alated).
Remarks. Rhyacobates gongvo differs from other species of Rhyacobates by the following diagnostic characteristics: in the apterous morph, the mesonotum has a median yellow stripe on the posterior three quarters; the male proctiger has small angular projections on each side (see Tran & Yang 2006: Fig. 22); the male paramere is relatively long and slender, not setose (see Tran & Yang 2006: Figs. 24, 25); the abdomen of the female is elongate and straight (length about 0.4 times body length), the posterior part of sternum 7 is slightly depressed dorsoventrally (see Tran & Yang 2006: Fig. 17); sternum 7 of the female does not totally enclose the genital segments, the posterior margin is straight and without a process, and the connexival projections are long, straight, and flat (see Tran & Yang 2006: Figs. 18–20). Rhyacobates gongvo is relatively similar to R. malaisei Andersen & Chen, 1995, but can be separated from the latter by the diagnosis above (for a comparison between these two species, see Tran & Yang 2006: 18–19).
Habitats. See Fig. 40; also see Tran & Yang (2006: 18).
Distribution. Vietnam: Lao Cai.
description: Published as part of Tran, A. D. & Nguyen, X. Q., 2016, Three new species of the water strider genus Rhyacobates Esaki, 1923 (Hemiptera: Gerridae) from Vietnam, pp. 501-516 in Zootaxa 4121 (5) on page 513, DOI: 10.11646/zootaxa.4121.5.1, http://zenodo.org/record/271684