Ittys infuscata, George, 2007

George, Jeremiah N., 2007, Review of the species of Ittys (Chalcidoidea: Trichogrammatidae) occuring in the United States, with the description of four new species, Zootaxa 1581 (1), pp. 53-68 : 63-64

Ittys infuscata New Species

( Figs. 8 , 12 , 16–17)

Diagnosis. TSS large relative to other species, subcircular, widest medially, terminal spine distinctly subapical ( Fig. 8 ).

Description. Length: Male 1.05–1.19 mm, female 0.85–1.07 mm (without ovipositor 0.85–0.99 mm)

Color: Both sexes light brown with following variation: head light tan to yellow, malar sulcus distinct light brown. Pedicel, funicle and club segments light brown. Mesosoma light tan to yellow. Dorso-lateral and antero-lateral parts of anterior margin of pronotum with light brown band; pro- and mesocoxae varying from light to dark brown. Metacoxa dark brown; metasoma dark glossy black to brown.

Male: Head 0.97 as long/wide, interocular distance 0.44 head width. Antennae with scape widest in basal half; A2 relatively large and appressed to F1; C1, C2, and C3 0.32, 0.40, 0.38 total club length, respec- tively;F1- 3 BPS; F2- 2 BPS; C1, C2 and C3 each with 1 BPS; C1- 1 PS extending from C1 to C2; C2- 1-2 PS extending length of C2; C3- 4 PS extending length of segment; club segments with CHS dense and relatively long; C2 with ca. 6 evenly distributed CHS; length of CHS 0.051 mm.

Mesosoma: Mesoscutum ca. 0.90 as wide /long. Scutellum ca. 1.33 as wide/long. Forewing 0.46 as wide / long; venation attaining ca. 0.7 length of wing; RS2 distinct; r-m crossvein distinct; median vein track absent; 1 st and 2 nd branch of cubital vein track present but not distinct; anal vein track present; RS1 distinct with ca. 5 setae; fringe setae short, 0.16 maximum width of wing; relative length of submarginal, premarginal, marginal and stigmal veins, 1.6, 0.9, 1.3, 0.6 respectively; postmarginal extension absent; premarginal short, wide relative to submarginal; apical corner of costal cell with ca. 2 setae; forewing with extensive dark infuscation from radial process apically to just beyond stigmal vein, widening posteriorly to middle of anal vein track ( Figs 11C–D ). Legs with relative length of coxa, trochanter, femur, tibia and (tarsomeres) as follows: foreleg- 4.0: 1.5: 6.0: 5.2: (2.0: 1.8: 1.7); middle leg- 3.8: 2.2: 6.0: 7.8: (2.5: 1.9: 2.0); hind leg- 5.0: 2.5: 5.0: 8.0: (1.8: 1.8: 1.8).

Metasoma: TSS subcircular with terminal seta anterior to posterior margin ( Fig. 11F ). Genitalia with digital spine absent on volsellae; length of genitalia to HTL 0.66–0.72; apodemes to total length of aedeagus 0.43–0.51; dorsal aperture length to width 0.58–0.72; AD to length of genitalia 0.23–0.30.

Female. Similar to male except as follows: F1- 3 BPS; F2- 3-4 BPS; C1- 2 BPS; C2- 1 BPS; C3- 1 BPS; C1- 1 PS extending from C1 to C2, C2- 3 PS extending length of C2, C3- 4-5PS extending length of segment, C2 with ca. 8 CHS; HTL/OL 0.43–0.45.

Distribution. Known from southeastern Arizona, southern New Mexico, central Texas and northern and central Mexico, with one isolated record from South Carolina.

Biology. Unknown.

Etymology. Named for the heavily infuscate forewing.

Types- Holotype 1♂ s, allotype 1♀ s. UNITED STATES. Texas (Burnet Co.)- Inks Lake State Park ; iii.22.1986; JBW & GZ; 86/020 ( USNM).

Material examined. UNITED STATES. Arizona: (Cochise Co.)- Bisbee, 2 mi E, Jct. Hwy. 80 and Warren Rd ; 3♀ s; 27-viii-1982; SS; RJL. Huachuca Mts , 5364 Ash Cyn. Rd. , 0.5 mi W. Hwy 92; 1♀ s, 1♀ c 1♂ c; viii.1993; MT; N. McFarland. Huachuca Mts , 5364 Ash Cyn Rd. , 0.5 mi W. Hwy 92; 5100' el; 1♀ c; 13/ 22-ix- 1993; MT; N. McFarland. ( Santa Cruz Co. )- Coronado Nat’l Forest , Sycamore Canyon; 31°25.10' N, 111°11.31' W; 1♀ s; 19-viii-2002; SS (mostly riparian areas); A. Owen. Sycamore Canyon, 9 mi W, Peña Blanca Lake ; 4100' el; 1♀ s; 12-VII-1983; R. Anderson. New Mexico: (Hidalgo Co.)- Lordsburg, 15 mi NE on Hwy 90; 2♀ s; 25-viii-1982; SS; RJL. ( Valencia Co. )- Las Lunes, 20 mi W (Carrizo Arroyo); 1♀ c; 1-23- VIII-1977; MT; along streambed; S. & J. Peck. South Carolina: ( Anderson Co. )- Pendleton, Tanglewood Spring; 36° 38.7' N 82°47W; 740' el.; 1♀ c 6-v-1987; MT; J. Morse ( CNC). Texas: ( Blanco Co. )- Pedernales Falls St. Park, Wolf Mtn; 3♀ s, 4♀ c, 1♂ s; 22-viii-1986; JBW & GZ. ( Brazo Co. )- College Station , Lick Creek Park; 1♀ c; 30-vii-1987; SS; JBW. ( Burnet Co. )- Inks St. Park; 1♀ s, 6♀ c, 1♂ s; 22-III-1986; JBW & GZ. ( Cameron Co. )- SaTSSl Palm Grove Sanctuary; 1♂ c; 6-VII-1982; G. Gibson ( CNC). (Hidalgo Co.)- Bentson Rio Grande St. Pk., River Hiking Trail ; 2♀ s, 4♀ c,; 19-VI-1986; SS; JBW. ( Presidio Co. )- Big Bend Ranch, SNA; 4400' el; 1♀ c; 22-vi-1990; SS; JBW & GZ. ( Starr Co. )- Falcon Lake St. Park; 1♀ c; 20-IV-1985; JBW. MEXICO. Chiapas: Ocozocoautla (El KiTSSm); 1♀ c; 19-vii-1984; G. Gordh. Nuevo Leon: San Juan; 1♀ s, 1♂ s, 1♂ c; 14-viii-1983; G. Gordh. Salinas Victoria, 20 km. N; 2♀ c, 2♂ c; 13-vii-1983; A. Gonzales. San Luis Potosí: San Vicente, 20 km, N. Hwy 127; 2♀ c; 4 –vii-1984; G. Gordh. Tamaulipas: Ciudad Victoria, UAT campus; 1♀ c; 12/ 14-ii-2001; YPT; S. Triapitsyn. Veracruz: S. Nautla, 1♀ c; 31-x-1982; SS; A. Gonzales, J. T Huber .

Comment s. Ittys infuscata is the most easily recognized North American species. The unique coloration is diagnostic for both sexes and material can be tentatively identified as I. infuscata from card and point mounted material. Paracentrobia ducassei is the closest New World species that could be confused with I. infuscata . P. ducassei was described from Haiti by Dozier ( Dozier 1932). The types of P. ducassei have been examined and are in poor condition due to darkening of the mounting medium. The forewing agrees with I. infuscata in having a pronounced Rs1 and similar infuscation. As indicated above ducassei may be better placed in Ittys and is possibly conspecific with infuscata , but its placement will remain questionable until additional material including males are collected.

Figures

FIGURES 8–11. Male genitalia; 8 I. infuscata, 9 I. californica bar illustrates the AD distance discussed in text, 10 I. macfarlandi, I. inermus.

FIGURES 12–15. Male antennae; 12 I. infuscata, 13 I. macfarlandi, 14 I. californica, 15 I. inermis.