Sciomyza pubera, (Loew), 1862: 106

Murphy, William L., Abercrombie, Jay, González, Christian R. & Knutson, Lloyd, 2023, Overview of the Sciomyzidae (Diptera: Sciomyzoidea) of the Americas south of the United States, Zootaxa 5345 (1), pp. 1-113 : 14

pubera (Loew), 1862: 106–107

( Sciomyza ) [ Cresson 1920: 40]

LT: ♂ United States, “Middle States.” MCZC, No. 13208 [Examined LK 1977 in Knutson et al. 1986: 45]

DIST: GUATEMALA (Alta Verapaz; Sacatepéquez). MEXICO (Chiapas; Ciudad de México; Durango: Navios; Hidalgo: Tulancingo; México; Michoacán: Morelia; Tamaulipas). Also CANADA (Ontario) and UNITED STATES. Map: Foote et al. 1960

Note: One of the Guatemalan specimens is labeled “La Providencia, Obispo.” This is likely San Juan del Obispo in the department of Sacatepéquez. The holotype and paratypes of Thecomyia chrysacra were collected at the same locality. We present an analysis of the their provenance under T. chrysacra .

FIGS: Wulp 1897 (head, as Sciomyza squalens Wulp ), Fisher & Orth 1983 (habitus, head, ♂ terminalia), Marinoni & Mathis 2000 (antenna, ♂ terminalia, ♂ genitalia), this paper (habitus, proepisternal seta, antenna, thoracic pleura, fore legs, wing, pharyngeal sclerite, posterior spiracular disc)

BIOL: Foote et al. 1960. BG: 1; PG: 1

HOSTS/PREY OF LARVAE: Two males in the CUIC are labeled, “ MEXICO: México, Chapingo: ENA Expt. Fields, 1325 m., col. 11.VIII.1969, pup. 17.VIII.1969, emer. 26.VIII.1969. K. Valley.” Shells of large Haitia (family Physidae ), one containing the puparium, are pinned with each adult. In North America: freshwater (four genera) and terrestrial (four genera) pulmonate snails [“ … eggs, larvae and puparia found on/in Stagnicola elodes , Helisoma anceps , Helisoma trivolvis , Physella gyrina , Aplexa hypnorum , Oxyloma decampi… Apparently the larvae are associated with an ecological assemblage of snails and not with any particular taxonomic group” ( Foote et al. 1960)]. Also puparia of A. pubera were collected on one valve of a large dead freshwater clam ( Lampsilis sp. , family Unionidae ) on a lakeshore, indicating that larvae apparently were feeding saprophagously (J.B. Keiper, pers. comm. to LK). This is the only Sciomyzidae known to feed on dead Unionidae .

IMMATS: Foote et al. 1960 (E, L1–L3, P)

CHR: Boyes et al. 1969 (karyotype)

MOL_DAT: Y

squalens Wulp, 1897: 356 , pl. 9, fig. 10 (head) ( Sciomyza ) [Knutson et al. 1976: 3]

ST: 7♂ 3♀ Mexico, Mexico City. H.H. Smith. NHMUK. The specimens are labeled lectotype and paralectotype, but no indication is provided as to who labeled them. Apparently the designations have not been published. Examined by LK in 1971. Also one syntype, ZMAN, Wulp Coll., Box No. 7.