Therates gestroi Horn, 1900

Wiesner, Jürgen, 2013, The chennelli group of the Genus Therates Latreille (Coleoptera: Cicindelidae) 114. Contribution towards the knowledge of Cicindelidae, Insecta Mundi 2013 (315), pp. 1-86 : 22-23

17. Therates gestroi Horn

( Fig. 125 )

Therates gestroi Horn 1900: 196 , 197.

Therates kraatzi gestroi . Horn 1926: 113; Mandl 1972: 110, f. 4f; Wiesner 1988: 18, f. 72; Naviaux 1991: 230; Wiesner 1992: 90; Probst and Wiesner 1994b: 101.

Therates gestroi . Horn 1910: 194; Fowler 1912: 298, 299; Heynes-Wood and Dover 1928: 43; Sawada and Wiesner 1997: 79; Sawada and Wiesner 2002: 79, 80, f. 3, 4.

Type depository. Holotype female in SDEI.

Type status. Holotype female! Type labels: “MUSEUM PARIS, LAKHON, HARMAND 1878” [printed]; “Holotypus” [printed, red]; “Gestroi mihi” [handwritten, light yellow, with black borders] .

Diagnosis. Distinguished by the combination of elytral maculation with slender humeral lunule, extended basal dot, and acutely angled central dot.

Re-description. Size: Total length (without labrum) 5.4 mm- 7.2 mm, (mean=6.3, n=8). Head: Shining greenish black. Mandibles yellowish, brownish distally in females, teeth brownish marginally. Labrum (male Fig. 130 , female Fig. 131 ) as wide as long, yellowish, with six apical teeth one lateral tooth. Labial and maxillary palpi yellowish. Antennae lanceolate, extending posteriorally behind elytral shoulders in male, somewhat shorter in the females, scape with a single apical bristle, antennomeres 2 to 5 glabrous, antennomeres 6 to 11 finely and evenly pubescent; scape yellowish above, black on underside, all other antennal segments dark. Clypeus glabrous. Frons smooth, with a transverse furrow in the posterior part of the orbital plates. Thorax: Pronotum shining greenish black, as long as wide, constricted in front and at back, transverse furrows strong, middle line and lateral lines nearly obsolete, middle line with several transverse short branches. Elytra: Shining brownish black, with basal and apical humps, distinctly punctate in front, shallower in the apical half ( Fig. 126 ). Apex transparent brown, with angular lateral corner and a sutural tooth, slightly recurved between. Maculation composed of a slender yellow humeral lunule, yellow basal dot which is extended to the middle suture, and central dot which is acutely angled outwards toward the front ( Figs. 127, 128 ). Ventral aspect: Venter black. Legs yellowish, tibiae and tarsomeres darker distally. Aedeagus: ( Fig. 129 ) curved, broadly rounded distally, total length 1.4 mm.

Distribution. Laos (Khammouan), Vietnam (Tuyen Quang).

Localities. LAOS, Khammouan, Nakai env., 22.v.-8.vi.2001, 500- 600 m ( JWCG) ; VIETNAM, Tuyen Quang, Na Hang Reserve, 16.-20.v. 1997, 300 m, rainforest ( CMNC, RNFC) , Tuyen Quang, Na Hang Reserve, 20.-24.v. 1997, 300 m, rainforest ( CMNC, JWCG) .

Remarks. This species was described from a single female specimen with the collection locality of “Indochine Lakhon”. Due to the fact that I have been unable to determine the location of “Lakhon”, I based this redescription of the female on specimens collected in Laos and Vietnam that most closely fit the holotype. I also include a description of the associated male for this species.

Figures

Figures 118-131. Therates. All scales = 1 mm. 118-124. nepalensis Probst and Wiesner, 1994. 118) Habitus, holotype male. 119) Punctures of elytra, holotype male. 120-121. Maculae of elytra. 120) Holotype male. 121) Female from Sikkim (ZSMC). 122) Left lateral view of aedeagus, holotype. 123-124. Labra. 123) Holotype male. 124) Female from Sikkim (ZSMC). 125-131. gestroi Horn, 1900. 125) Habitus, male from Tuyen Quang (JWGC). 126) Punctures of elytra, male from Tuyen Quang (JWGC). 127-128. Maculae of elytra. 127) Male from Tuyen Quang (JWGC). 128) Female from Tuyen Quang (CMNC). 129) Left lateral view of aedeagus, from Tuyen Quang (JWGC). 130-131. Labra. 130) Male from Tuyen Quang (JWGC). 131) Female from Tuyen Quang (CMNC).