Ufens pallidus Owen.

Aishan, Zhulidezi & Hu, Hong-Ying, 2014, Taxonomic study of Ufens Girault from Xinjiang, China (Hymenoptera: Trichogrammatidae), Zoological Systematics 39 (3), pp. 449-454 : 451-452

Ufens pallidus Owen. New record to China ( Figs 3 , 6, 9, 10 )

Ufens pallidus Owen, 2011: 118–120 . Type locality: Kara Kum Desert , Baýramaly District, Mary Province, Turkmenistan.

Redescription. Male. Body length 0.78 mm (0.75–0.86) (n =8), body color brown except vertex, legs and venation light yellow, eyes and ocelli dark red, wings hyaline.

Head oblate, 1.39 times as wide as long (25: 18). Eye large, 0.72 times length of head (0.67–0.79). Mandible tridentate, under palp short, unisegmented. Antenna ( Fig. 3 ) with scape 4.5 times as long as wide (4.0–5.0); pedicel pyriform, 1.53 times as long as wide (1.43–1.67); funicle segments equal in length; club 3.5 times as long as wide (3.0–4.0), last club segment small and round; C/F=2.02 (1.88–2.28); 1 placoid sensillum on F1 and F2, 3 placoid sensilla on C2 and C3, respectively.

Mesoscutum with longitudinally cellulate sculpture. Fore wing ( Fig. 6 ) sparsely setose, setae mostly in an irregular arrangement, with narrowly diverging setal tracks r-m to M; single setal track between CU1 and CU2. FWL/FWW = 1.48(1.42–1.54); venation ratio: submarginal 12: premarginal 5: marginal 7: stigmal 5; stigmal square; fringe setae short, 0.03 times of FWW (1: 41). Hind wing with length:width=55: 6, with 3 setal tracks, setae long, 0.84 times HWW (5: 6). FWL/HTL =3.28 (3.11–3.44); FWFS/FWW = 0.03 (0.02–0.03); Max r-m to M/Min r-m to M = 2.4 (2.3–2.5); MV/PM =1 (0.9–1.2); SV/MV = 0.72(0.60–0.83); MV length/MV width = 1.27 (1.25–1.43). Hind wing with HWL/HWW = 8.89 (8.83–9.00); HWFS/HWW = 0.80 (0.75–0.83).

Gaster conical, genitalia ( Figs 9–10 ) with volsella stout, crescent shaped, apically convergent on midline; anterior invagination obvious; width of ADA distinctly narrower than capsule width, ADA/GL = 0.5(0.4–0.5); apodeme, dorsal

© Zoological Systematics, 39(3): 449–454 ridge and ventral process absent, parameres present, each with a terminal spine. GL/GW = 2.75(2.20–3.20); GL/HTL = 0.92 (0.88–1.00).

Female. Body length 0.96 mm (0.90–1.02); body color and morphological features similar to male. Antenna with abundant placoid sensilla, especially on the third club segment; F2/F1 =1.15 （ 1.074–1.33 ）, club 1.28 times as wide as long (1.08–1.53), C/F = 2.07(2.00–2.14), 2 PLS on F1, 4PLS on F2, 2 PLS on C1, 4 PLS on C2, 3LS on C3.

Ovipositor not exserted, 0.47 times length of gaster (0.43–0.51), 2.57 times length of hind tibia (1.22–1.35).

Material examined. 2♀, 6♂, China, Xinjiang, Kelamayi , 24 July 2012, Jia-Xiong Lu .

Host. Unknown.

Distribution. China (Xinjiang), Turkmenistan.

Comments. Owen (2011) described this species based on 21 specimens (14♂, 7♀) from Turkmenistan. It can be easily distinguished from other Ufens spp. according to its unique features of fore wing venation and male genitalia. The specimens from China were collected in Kelamayi (close to Gurbantünggüt Desert), Xinjiang where desert plants such as © Zoological Systematics, 39(3): 449–454 Salsola ferganica and Suaeda glauca are abundant and common. Owen (2011, p. 118) described this species as “no other appendages present except crescent-shaped volsellae” or “may have parameres in one specimen ”, but in our specimens the parameres are distinct, and each with a terminal spine. Also the volsellae are not much crescent-shaped as described by Owen (2011), somewhat not quite curved. But comparing with the photos of paratype of Ufens pallidus Owen sending by Serguei V. Triapitsyn in June, 2013, the specimens collected in Xinjiang was confirmed to be Ufens pallidus Owen.

Figures

Figs 1–4. Antenna. 1. Ufens similis (Kryger), ♂. 2. U. similis (Kryger), ♀. 3. U. pallidus Owen, ♂. 4. U. foersteri (Kryger), ♂.

Figs 5–11. Fore wing and genitalia. 5–7. Fore wing. 5. U. similis (Kryger), ♂. 6. U. pallidus Owen, ♂. 7. U. foersteri (Kryger), ♂. 8–11. Genitalia. 8. U. similis (Kryger), ♂. 9–10. U. pallidus Owen, ♂. 11. U. foersteri (Kryger), ♂.