Trismegistomya pumilis (Reinhard, 1967)

Fleming, AJ, Wood, D. Monty, Smith, M. Alex, Dapkey, Tanya, Hallwachs, Winnie & Janzen, Daniel H, 2019, A new species of Trismegistomya Reinhard (Diptera: Tachinidae) from Area de Conservacion Guanacaste in northwestern Costa Rica, Biodiversity Data Journal 7, pp. 29130-29130 : 29130

Trismegistomya pumilis (Reinhard, 1967)

Trismegistus pumilis Reinhard, 1967: 101. Type data: Holotype ♀ (CNC). U.S.A., Arizona, Portal. Type label: Holotype ♀: "Porta, Arz. VIII–17– 65/ H J Reinhard Collector/ HOLOTYPE Trismegistomya pumilis / Trismegistomya pumulis [sic] R (RNH)."

Materials

Type status: Holotype. Occurrence: sex: female; Taxon: scientificName: Trismegistomyiapumilis (Reinhard, 1967); originalNameUsage: Trismegistuspumilis Reinhard, 1967; genus: Trismegistomyia; specificEpithet: pumilis; Location: locationID: Portal, Arizona; country: United States; countryCode: US; stateProvince: Arizona; locality: Portal ; verbatimLocality: Portal, Arizona, USA; Event: year: 1965; month: 8; day: 17; verbatimEventDate: VIII–17– 65; habitat: Desert; Record Level: institutionCode: CNC Type status: Other material. Occurrence: recordedBy: J.E. O'Hara; individualCount: 3; sex: 1 male, 2 females; lifeStage: adult; Taxon: scientificName: Trismegistomyapumilis; Location: countryCode: USA; stateProvince: Arizona; county: Graham County; locality: 2.4mi W on hwy 366 from hwy 191, 3800 ft. ; verbatimLocality: 2.4mi W on hwy 366 from hwy 191; verbatimElevation: 3800ft; Event: samplingProtocol: Malaise trap; eventDate: 19-22.viii.1993; Record Level: institutionID: CNC; institutionCode: CNC

Description

Female (Fig. 3). Length: 3-4 mm. Head (Fig. 3b): pedicel bright orange; postpedicel dark brown throughout; arista concolorous with postpedicel, abruptly tapering apically; ocellar setae well-developed, proclinate and divergent, arising behind anterior ocellus; fronto-orbital plate with two irregular rows of short setulae outside of frontal setae; frontal setae appearing as continuous with parafacial setulae; two pairs of proclinate orbital setae, one pair of reclinate upper orbital setae. Thorax (Fig. 3a, c): three postsutural supra-alar setae (anteriormost seta weak, nearly half as long other two), three postsutural intra-alar setae; three postsutural dorsocentral setae; scutellum with one pair of basal scutellar setae, one pair of lateral scutellar setae and one pair of weaker divergent apical scutellar setae; scutellum bearing one pair of weak but evident discal setae slightly more widely separated than apical scutellar setae. Legs (Fig. 3c) entirely glabrous black, as in generic description. Wing (Fig. 3a): transparent with slight yellow tinge basally; basicosta of slightly burnt orange color; wing vein R4+5 bearing 5-6 setulae extending 0.75 × distance from node to crossvein r-m on dorsal surface, ventral surface bearing 0-2 setulae; calypters pale white translucent, slightly cream colored basally. Abdomen (Fig. 3a, c): ground color of abdomen glabrous maroon or reddish-black; very slight silver tomentum only visible when observed under different angles of light, almost absent; complete row of marginal setae present on both T4 and T5; median discal setae absent on all tergites except row on T5.

Male: as female, except for terminalia.

Diagnosis

Trismegistomyia pumilis can be differentiated from its only congener, T. jimoharai sp. n., by the following distinctive combination of traits: basal portion of postpedicel not distinctly orange; arista concolorous with postpedicel; and three postsutural dorsocentral setae instead of four.

Distribution

USA, Arizona, Portal.

Ecology

Unknown; specimens of T. pumilis were collected via Malaise traps and sweeping.