Orasema castilloae, Baker & Heraty, 2020

Baker, Austin J. & Heraty, John M., 2020, The New World ant parasitoid genus Orasema (Hymenoptera: Eucharitidae), Zootaxa 4888 (1), pp. 1-84 : 38-40

Orasema castilloae n. sp.

urn:lsid:zoobank.org:act:E12466D7-7159-4E78-8DA5-9C0A9FAF5198

( Fig. 18 )

Diagnosis. This species is distinguished from O. tolteca by features given in the key.

Description. Female. Length 2.8–5.2 mm ( Fig. 18A ). Color. Head and mesosoma iridescent blue-green. Scape yellow to partially brown with iridescence; pedicel and anellus brown. Femora dark brown with iridescence on basal two-thirds, fading to yellow on distal third. Gaster dark brown with strong green-blue iridescence. Head ( Fig. 18B ). HW:HH = 1.1–1.4; IOD:EH = 1.8–2.1; MS:EH = 1.0–1.5. Labrum with 4 digits. FL:HH = 1.2–1.5; F2L:F2W = 1.2–1.5, F2L:F3L = 1.0–1.4 ( Fig. 18D ). Mesosoma ( Fig. 18C, F ). ML:MH = 1.0–1.2. Axilla rugose; axillular sulcus weak and foveate; axillula areolate to areolate-reticulate. Propodeal disc areolate ( Fig. 18G ); callus areolate-reticulate. Propleuron rugose-reticulate. Upper mesepimeron reticulate. HCL:HCW = 1.4–1.8; HFL:HFW = 4.8–6.3. FWL:FWW = 2.2–2.6, FWL:ML = 2.1–2.4. Metasoma. PTL:PTW = 1.1–1.9, PTL:HCL = 0.6–1.2, reticulate, ventral sulcus absent. Ovipositor with second (dorsal) valvula with 6 or 7 annuli that are narrowly separated dorsally, the carinae coalescing.

Male. Length 3.6–4.0 mm. HW:HH = 1.2–1.3. FL:HH = 1.8–2.0, F2L:F2W = 1.6–2.0 ( Fig. 18E ). Femora dark brown medially, tips yellow. PTL:PTW = 4.2–6.5, PTL:HCL = 2.0–2.2.

Hosts. Unknown.

Plant associates. Observed ovipositing in Baccharis salicifolia (Ruiz & Pav.) Pers. (Asteraceae) . Swept from desert willow ( Chilopsis linearis (Cav.) Sweet ; Bignoniaceae ), Gossypium thurberi Tod. (Malvaceae) , and Phacelia sp. ( Boraginaceae ).

Distribution ( Fig. 17 ). Mexico: SO; United States: AZ. Collected April–September.

Material examined. Holotype. UNITED STATES. Arizona: Santa Cruz Co., Flux Canyon Rd , 1445m, 31°29’46”N, 110°45’32”W, 12.viii.2014, Paul Masonick, oak savannah, swp, H14-100 [♀, deposited in UCRC: UCRCENT00412574] . Paratypes. MEXICO. Sonora: Nogales POE, 31 ° 19’48”N, 110 ° 56’24”W, 7.iv.1968, A. Kumlin, on vegetables [1♀, USNM: UCRCENT00416870]. 20 mi. S. Estacion Llano, 30°04’19”N, 111°06’12”W, 17.viii.1964, M.E. Irwin [1♀, UCRC: UCRCENT00413311] . UNITED STATES. Arizona: 1856, C.F. Baker [1³ 1♀, USNM: UCRCENT00416866, UCRCENT00416869]. Cochise Co., 6 mi. W. of Montezuma Ps., Huachuca Mts., 31 ° 20’24”N, 110 ° 22’48”W, 19.viii.1940, J.J.DuBois [1♀, EMEC:UCRCENT00404902].Bisbee(1429 Franklin St. ), 31 ° 24’26”N, 109 ° 55’59”W, 16.vii.1995, A.S. & N. Menke [1♀, USNM: UCRCENT00416662]. Douglas, 1188m, 31 ° 20’40”N, 109 ° 32’43”W, 29.vii.1946, H.A.Scullen [1♀,ORSU:UCRCENT00403960].Harshaw Ck, 31 ° 29’37”N, 110 ° 41’0”W, 18.viii.1999, J. George, ovipositing in Baccharis salicifolia [2♀, UCRC: UCRCENT00175176, UCRCENT00278220]. Gila Co. , Globe, 1188m, 33 ° 23’38”N, 110 ° 47’14”W, 6.viii.1946, H.A. Scullen [1♀, ORSU: UCRCENT00403959]; vii.1930, Parker [1³ 2♀, MCZ: UCRCENT00318643–44, CASC: UCRCENT00417524]; 10.ix.1917, C.H.T. Townsend, on Thurberia thespesioides [1♀, USNM: UCRCENT00416868]; 13.ix.1945, R.A. Flock [1♀, UCRC: UCRCENT00413316]. Six Shooter Canyon, nr. Globe, 33 ° 22’51”N, 110 ° 46’12”W, 17.viii.1958, R.L. Westcott [1♀, LACM: UCRCENT00305151]. Graham Co. , Pinal Mts. , 32 ° 42’3”N, 109 ° 52’18”W, 3.vii.1932 [1♀, UCRC: UCRCENT00413317]. Maricopa Co. , Canon L., 33 ° 32’24”N, 111 ° 26’24”W, 1933, Parker [1?, CASC: UCRCENT00417398]. Baboquivari Mts. , Elkhorn Ranch, 31 ° 47’24”N, 111 ° 34’12”W, 21.iv.1962, M.L. Noller, on Phacelia [1♀, UAZ: UCRCENT00403767]. Continental, 31 ° 51’0”N, 110 ° 58’12”W, 14.vi.1955, G.D. Butler, desert willow [1♀, UAZ: UCRCENT00403766]. Organ Pipe Cactus Nat. Mon., 32 ° 05’15”N, 112 ° 54’21”W, 6.viii.1955, G.D. Butler & F.G. Werner [1♀, UAZ: UCRCENT00403783]. Sycamore Cn., nr. Ruby, 31 ° 55’12”N, 110 ° 47’24”W, 16-17.viii.1961, Werner and Bequaert [1♀, UAZ: UCRCENT00403774]. Pima Co. , Tucson, 32 ° 13’12”N, 110 ° 55’48”W, 28.iv.1940, S.L. Green [1♀, UAZ: UCRCENT00403764]; 24.iv.1940 [1♀, UAZ: UCRCENT00403770]; 745m, 11.viii.1924, E.P. Van Duzee [1♀, CASC: UCRCENT00417399]; v.1960, F.G. Wer-ner [1♀, UAZ: UCRCENT00403775]; Wickham [1³, USNM: UCRCENT00416867]. Pinal Co. , Vic. Mammoth, 1005m, 32°43’21”N, 110°38’26”W, 9.viii.1977, Olson and Hetz [1♀, UAZ: UCRCENT00403773]. Santa Cruz Co. , 12 mi. E. Nogales, 31 ° 20’24”N, 110 ° 43’48”W, 1.viii.1961, Werner and Nutting [1♀, UAZ: UCRCENT00403771]. Apache Rd, 1623m, 31°25’34”N, 110°41’48”W, 13.viii.2014, J.Heraty, meadow, swp, H14-102 [2♀, UCRC: UCRCENT00412584, UCRCENT00412674]. Harshaw Creek ~ 7mi. SE Patagonia , 31 ° 31’3”N, 110 ° 41’36”W, 5.vii.1996, Carey [1♀, USNM: UCRCENT00416655]. Nogales, 1183m, 31 ° 20’25”N, 110 ° 56’3”W, 16.viii.1968, R.M. Bohart [1♀, UCDC: UCRCENT00415615]; 28.viii.1982, J. LaSalle [1♀, CNC: UCRCENT00505429]. Pa-tagonia Mtns. ~ 4 mi. S.E. Patagonia Harshaw, 31 ° 31’2”N, 110 ° 41’36”W, 23.vii.2000, J. George [2♀, UCRC: UCRCENT00414045–46]; Harshaw Ck ~ 7mi. SE Patagonia , 17.viii.1999, M. Gates & J. George, Baccharis salicifolia , sweep [1³ 1♀ 2?, USNM: UCRCENT00248215–16, UCRCENT00248263, UCRCENT00416634]. Patagonia Mts. , Summit, Lochiel Rd. , Sta, 31 ° 21’0”N, 110 ° 25’48”W, 5.ix.1964, F. Werner [1♀, UAZ: UCRCENT00403765]. Patagonia , 31 ° 32’24”N, 110 ° 45’36”W, 26.vii.1962, Noller [1♀, UAZ: UCRCENT00403768]; Werner, Bequae-rt, and Noller [1♀, UAZ: UCRCENT00403772]. Sycamore Cyn., Hank and Yank Spr., 1280m, 31 ° 55’12”N, 110 ° 47’24”W, 7-8.viii.1982, G. Gibson [1³, TAMU: UCRCENT00243185] .

Etymology. Named in honor of Stephanie Castillo, a fellow entomology graduate student.

Figures

FIGURE 17. Distribution map of species in the Orasema tolteca species group.

FIGURE 18. Orasema castilloae. Holotype female (UCRCENT00412574): A, habitus, lateral; B, head, anterior; C, mesosoma, lateral, arrow indicating presence of anterior prepectal carina; D, antenna; F, mesosoma, dorsal; G, propodeum, posterior. Paratype male (UCRCENT00416866): E, antenna.