Dactuliothrips ephedra, Pereyra, Veronica & Borbón, Carlos Manuel De, 2013

Pereyra, Veronica & Borbón, Carlos Manuel De, 2013, The American genus Dactuliothrips (Thysanoptera: Aeolothripidae) with three new species, Zootaxa 3734 (1), pp. 1-14: 4

publication ID

http://dx.doi.org/10.11646/zootaxa.3734.1.1

publication LSID

lsid:zoobank.org:pub:A4A334DA-57B1-4245-8CDE-0022BBE3F8F7

persistent identifier

http://treatment.plazi.org/id/0393D53A-B348-FFA8-BBC2-FE20FACCA188

treatment provided by

Plazi

scientific name

Dactuliothrips ephedra
status

sp.n.

Dactuliothrips ephedra   sp.n.

Female: Color brown ( Fig. 4 View FIGURES 4 – 11. D ). Fore tibiae and tarsi lighter; fore wings light brown ( Fig. 77 View FIGURES 63 – 81 ); major setae dark brown; antennae dark, but segment III pale with apex dark and segment II with apical third-to-half pale ( Fig. 12 View FIGURES 12 – 28 ). Head ( Fig. 21 View FIGURES 12 – 28 ) longer than wide, reticulate striate without microtrichia, cheeks slightly arched. Ocellar setae III longer than ocellar setae I and II; bases of ocellar setae III inside ocellar triangle. Postocular setae I and III longer than the other postocular setae. Antennae with rings or annulations covered with microtrichia which are faint on segment I ( Fig. 12 View FIGURES 12 – 28 ). Antennal segments III –IV with two emergent sensoria at apex, one elongate but the other relatively oval ( Fig. 19 View FIGURES 12 – 28 ). Pronotum ( Fig. 30 View FIGURES 29 – 36 ) wider than long; reticulate striate; all major setae developed, five pairs on anterior margin, six longer pairs on posterior margin. Microtrichia absent on pronotum. Mesonotum reticulate striate ( Fig. 38 View FIGURES 37 – 48 ) with fine microtrichia on posterior three-quarters. Metanotum reticulate arcuate, covered with microtrichia anteromedially, with one pair of setae on anterior margin ( Fig. 38 View FIGURES 37 – 48 ). Fore tibia with two pairs of welldeveloped slightly curved setae on internal anterior margin; fore femora thickened and armed with between 4–6 heavy spurs on inner anterior margin ( Fig. 72 View FIGURES 63 – 81 ). Fore wings ( Fig. 77 View FIGURES 63 – 81 ) rounded at apex with five cross veins; fore vein with around 21 setae, hind vein with 19. Abdomen broad ( Fig. 4 View FIGURES 4 – 11. D ) with rounded apex. Tergites with faint transverse reticulation with microtrichia laterally. Sternites with microtrichia, with 3–6 well-developed discal setae ( Fig. 44 View FIGURES 37 – 48 ); sternite VII with three pairs of posteromarginal setae and two pairs of smaller supernumerary setae aligned with the posteromarginal setae ( Fig. 49 View FIGURES 49 – 62 ).

Measurements: Female holotype (in microns). Total body length 1,810; head length 202, width 160; interocellar setae III 44; distance between their bases 21; postocular setae (outer) 54, (inner) 40. Pronotum length 131, width 204. Fore wing length 920, width 104. Antennal segments length (width): I, 34 (32); II, 44 (30); III, 67 (22); IV, 61 (22); V, 52 (20); VI, 57 (19); VII, 42 (18); VIII, 34 (15); IX, 44 (12).

Male: Smaller than female and similar in color ( Fig. 5 View FIGURES 4 – 11. D ). Fore femur similar to female, with 3–4 heavy spurs on inner anterior margin ( Fig. 73 View FIGURES 63 – 81 ). Fore tibia with two setae developed on anterior margin. Abdominal tergite I with paired longitudinal ridges that do not reach the anterior margin ( Fig. 55 View FIGURES 49 – 62 ). Abdominal sternites without discal setae, with three pairs of posteromarginal setae and few sparse microtrichia ( Fig. 59 View FIGURES 49 – 62 ).

Measurements: Male paratype (in microns). Total body length 1,384; head length 188, width 146; interocellar setae III 31; distance between their bases 12; postocular setae (outer) 51, (inner) 31. Pronotum length 112, width 182. Fore wing length 800, width 110. Antennal segments length (width), I, 32 (32); II, 42 (28); III, 62 (23); IV, 59 (22); V, 45 (18); VI, 48 (18); VII, 40 (16); VIII, 32 (15); IX, 42 (12).

Material examined. Holotype female, USA, California, Joshua tree, on Ephedra   sp. ( Ephedraceae   ), 1.iv. 2003 (I. Terry), in California Academy of Sciences, San Francisco, CA. Paratypes: 6 females, 4 males same data as holotype, in the Natural History Museum, London; and ANIC.

Comments. This species is closely related to spinosus   as they have lightly and uniformly colored fore wings and a pale antennal segment III. However, it can be distinguished easily from spinosus   by the number and development of the major body setae, which are more numerous and larger in size in spinosus   . Additionally, ephedra   lacks microtrichia on the pronotum and has one elongate sensorium on antennal segments III & IV.