Tachardiobius nigricans Timberlake 1926, Timberlake, 1926

Triapitsyn, Serguei V., 2008, A review of Tachardiobius (Hymenoptera: Encyrtidae), with description of a new species from California, USA, a parasitoid of Tachardiella spp. (Hemiptera: Kerriidae), Zootaxa 1716, pp. 44-52: 46-48

publication ID

http://doi.org/ 10.5281/zenodo.274145

persistent identifier

http://treatment.plazi.org/id/03A6CC00-FF85-E86F-6ACA-CE8BFCE09981

treatment provided by

Plazi

scientific name

Tachardiobius nigricans Timberlake 1926
status

 

Tachardiobius nigricans Timberlake 1926  

( Figs 1–8 View FIGURES 1 – 5 View FIGURES 6 – 8 )

Tachardiobius nigricans Timberlake 1926: 22   –23 + plate 1 (figs 3 and 4) + plate 2 (figs 24 and 24 a); Peck 1963: 468; De Santis 1964: 215; De Santis 1989: 41; Trjapitzin & Ruíz-Cancino 1996: 22.

Type locality. Arlington, Maricopa Co., Arizona, USA.

Type material examined. Paratypes: 3 females, 1 male on points and 1 female on slide [ UCRC], labeled: 1. “Reared from Tachardia larreae   5 Apr. 1919 ”; 2. “Arlington Ariz.”; 3. “Collected on Greasewood 23 Jan. 1919 ”; 4. “C. H. Gable Collector”; 5. “Reared by C. S. Menagh”; 6. “ Paratype ”.

Additional material examined. MEXICO. Baja California Sur, Las Barracas (ca. 30 km E of Santiago, 23 ° 28 ’ 20 ’’N 109 ° 27 ’ 10 ’’W, 50 m), 14.v. 1982, P. DeBach (ex. lac scale on? Acacia   sp.) [6 females, 6 males, UCRC]. USA. Arizona: Maricopa Co., Arlington: 23.i. 1919, C.H. Gable (reared at Washington, District of Columbia, 29.i – 5.iv. 1919, C.S. Menagh, from Tachardiella larreae   on greasewood) [8 females, 12 males, and 1 specimen of an undetermined sex, USNM]; 26.ii. 1919, C.H. Gable (from Tachardiella larreae   , “Tempe No. 335 C”) [2 females, 1 male, USNM]. Pima Co., Tucson, 26.xii. 1896 – vi. 1897 (under No. 6251 °, some on “Carteria”) [35 females, 23 males, and 9 specimens of an undetermined sex, USNM]. California, Riverside Co.: near Hemet, 11.iv. 1937, C.M. Dammers (ex. Tachardiella   sp. on Adenostoma   sp.) [23 females, 8 males, UCRC; 1 male, EMEC; 1 female, USNM]. Pigeon Pass (near Moreno Valley and Riverside), i. 1909, California State Insectary (ex. Tachardiella   sp. on greasewood) [5 females, UCRC]. Thousand Palms Canyon, 2.iii. 1961, W.H. Ewart, O.L. Brawner (ex. lac scale) [4 females, 1 male, UCRC]. Texas, Brewster Co., Big Bend Ranch State Park, 29 ° 28 ’09’’N 103 ° 46 ’07’’W, 3980 ’, 12.v. 1990, G. Zolnerowich [1 female, TAMU].

Diagnosis. FEMALE. Body length 0.83–1.70 mm. Body mostly brown to dark brown, sometimes with a few lighter markings (particularly face often with a pattern of white or light brown markings but sometimes almost uniformly brown or dark brown); appendages mostly light brown to brown except meso- and metatibiae mostly whitish, with two submedial dark bands (best observed in lateral view, Fig. 3 View FIGURES 1 – 5 ). Maxillary palpus 4 – segmented. Antenna ( Fig. 1 View FIGURES 1 – 5 ) with scape 4.2–4.7 x as long as wide; F 1 –F 3 each longer than wide, F 4 and F 5 usually a little longer than wide but sometimes about as long as wide, F 6 about as long as wide; all funicle segments with longitudinal sensilla (although often not evident on F 1); clava 1.7–2.3 x as long as wide.

Forewing ( Fig. 5 View FIGURES 1 – 5 ) 2.2–2.4 x as long as wide. Ovipositor not or barely exserted ( Fig. 4 View FIGURES 1 – 5 ), ovipositor length: metatibia length ratio 1.3–1.4: 1.

MALE. Similar to female except as follows. Body length 0.60–1.10 mm. Face generally more uniformly colored than in female, sometimes with less patterned light markings. Vicinity of torulus without secretary pores. Antenna ( Fig. 6 View FIGURES 6 – 8 ) with scape about 3.7 x as long as wide; funicle segments longer than wide (F 1 the longest) and all but F 1 with longitudinal sensilla; clava 2.8–3.2 x as long as wide, entire or 2 –segmented, sometimes the subdivision is indistinct or incomplete. Forewing ( Fig. 7 View FIGURES 6 – 8 ) about 2.4 x as long as wide. Genitalia ( Fig. 8 View FIGURES 6 – 8 ) with 2 or 3 conspicuous spines on each digitus.

Distribution. Mexico (Baja California Sur) and USA (Arizona, California, and Texas [new record]).

Hosts. Tachardiella larreae (Comstock) ( Timberlake 1926)   , Tachardiella   sp(p)., and unidentified Kerriidae   .

Comments. The holotype female of T. nigricans   is deposited in USNM ( Timberlake 1926); most of the paratypes (including the allotype male) are also in USNM.

UCRC

University of California, Riverside

USNM

Smithsonian Institution, National Museum of Natural History

EMEC

Essig Museum of Entomology

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Hymenoptera

Family

Encyrtidae

Genus

Tachardiobius

Loc

Tachardiobius nigricans Timberlake 1926

Triapitsyn, Serguei V. 2008
2008
Loc

Tachardiobius nigricans

Trjapitzin 1996: 22
De 1989: 41
De 1964: 215
Peck 1963: 468
Timberlake 1926: 22
1926