Eotrechus elongatus Vitheepradit and Sites 2007
Key to the species of Eotrechinae (Hemiptera: Heteroptera: Gerridae) of Thailand and review of the fauna of the Phetchabun Mountain Range
Nakthong, La-Au
Vitheepradit, Akekawat
Sites, Robert W.
Zootaxa
2014
3860
1
47
63
6FM2C
Vitheepradit and Sites
Vitheepradit and Sites
[151,686,921,947]
Insecta
Gerridae
Eotrechus
GBIF
Animalia
Hemiptera
12
59
Arthropoda
species
elongatus
Eotrechus elongatus Vitheepradit and Sites 2007: Zootaxa 8−12.
Diagnosis.Males of E. elongatushave an elongate pygophore with a blunt tip and a wide, angular notch on the posterior margin of abdominal sternum VIII ( Fig. 40). Males of this species have the mesosternum approximately twice as long as the metasternum, whereas in E. kalidasathe mesosternum is less than twice as long as the metasternum ( Andersen 1982b). Males have an elongate pygophore with a blunt tip, whereas those of E. romglaohave a triangular pygophore with a small pair of lateral projections.
Discussion. This species is known only from Thailand( Vitheepradit & Sites 2007). More specifically, specimens of E. elongatuswere collected mainly on the rock surfaces at the sides of the waterfalls in Phu Hin Rongkla NP, which were occasionally splashed by water and covered by moss and vegetation ( Vitheepradit & Sites 2007). This species occurred syntopically with E. romglaoat RomglaoWaterfall in Phu Hin Rongkla NP ( Vitheepradit and Sites 2007). Several collections were conducted at the typelocality and adjacent areas from 2010 to 2012; however, no additional specimens were found. This species is a local endemic in the area of Phu Hin Rongkla NP in Phitsanulok Province.
Material examined. THAILAND: Phitsanulok Province: Phu Hin Rongkla NP, RomglaoWaterfall, 16°59'N 101°00'E, 1190 m, 22-IV-2002, CMUteam (3 winged males, 1 winged female); same locality, 22-IV-2002, N. Changthong (1 winged male); same locality, 22-IV-2002, A. Nantakwang (1 winged male); same locality, 22-V- 2002, CMUteam (13 winged males, 12 winged females); same locality, 21-VI-2002, CMUteam (1 winged female); same locality, 23-VIII-2002, CMUteam (1 wingless male, 2 winged males); same locality, 28-IX-2002, CMUteam (1 winged male, 2 winged females); same locality, 21-X-2002, CMUteam (1 winged male, 1 winged female); same locality, 15-XI-2002, CMUteam (3 winged females); same locality, 15-XII-2002, CMUteam (2 winged males, 2 winged females); same locality, 17-III-2003, CMUteam (2 winged males, 1 winged female); same locality, 10-IV-2003, CMUteam (7 winged males, 6 winged females); same locality, 4-V-2003, CMUteam (2 winged males, 4 winged females); same locality, 11-III-2002, R.W. Sites, A. Vitheepradit, and K. Kirawanich, L- 288 (6 winged males, 3 winged females); same locality, 6-V-2003, A. Vitheepradit, T. Prommi, and M. Ferro, L- 507, (76 winged males, 37 winged females); Phu Hin Rongkla NP, ManDaeng Waterfall, tier 5, 16°57'N 101° 03'E, 1250 m, 11-III-2002, G.W. Courtney, (1 winged male).