Abrhexosa ryckmani (Cook)

Amorim, Dalton de Souza & Brown, Brian V., 2020, Urban Scatopsidae (Diptera) of Los Angeles, California, United States, Insect Systematics and Diversity 4 (1), No. 1, pp. 1-41 : 37-38

Abrhexosa ryckmani (Cook)

( Figs. 13 and 82–86 )

Abrhexosa ryckmani (Cook), 1975: 73 . Type locality: United States, California, San Bernardino ( Rhexoza ). Type male, UMSP.

Diagnosis. Sternite 7 with a pair of short, sclerotized digitiform processes at posterior margin, aedeagus longer than parameres, no aedeagal plate.

Material Examined. 1 ♂, United States, California, Riverside. 33.912° N 117.57°W, BioSCAN site 46, Malaise trap, Coll. Sara Taylor, BioSCAN sample 18335 (on slide) ( LACM).

Distribution. United States, California, San Bernardino Co. (San Bernardino and Verdemont), Los Angeles Co. (San Dimas Canyon).

Remarks. Existing records of A. ryckmani are all from the eastern parts of Los Angeles County and San Bernardino County. A single male of this species was collected in this project in June, in BioSCAN site 46, Norco, at the eastern range of the BioSCAN sampling sites, close to San Bernardino. This is probably the sixth known specimen of A. ryckmani . In the original description of the species, Cook (1975) mentioned that the holotype was also reared from Echinocactus polycephalus , but the species is not as abundant as Quateiella quatei . The BOLDSystems has no records for the genus Abrhexosa .

Figures

Figs. 11–14. Habitus. 11. Abrhexosa grossa (Cook), male. 12. Akorhexosa grossa (Cook), female. 13. 10. Abrhexosa ryckmani (Cook), male. 14. Cooka melanderi (Cook), male.

Figs. 82–84. Abrhexosa ryckmani (Cook), male. 82. Head, lateral view. 83.Thorax, lateral view. 84.Wing.

Figs. 85–86. Abrhexosa ryckmani (Cook), male. 85. Segment 8 and terminalia, ventral view. 86.Terminalia,ventral view.