Boreantrops hispidus, Kits, Joel H. & Marshall, Stephen A., 2015

Kits, Joel H. & Marshall, Stephen A., 2015, A revision of Boreantrops Kits & Marshall (Diptera: Sphaeroceridae: Archiborborinae), Zootaxa 3915 (3), pp. 301-355 : 321

Boreantrops hispidus sp. nov.

( Figs. 11 , 47, 48 , 111)

Diagnosis. A distinctive species, most similar to B. friburguensis , with the following combination of characters: Scutellum with fine additional setae scattered on disc. Femora with distal third to quarter orange. Mid and hind tibiae black, with limited orange near joints.

Description. Head orange, occiput black, frons dark reddish brown posteriorly. Prementum and maxillary palp yellow. Occiput and gena covered with microtomentum, frons covered with microtomentum except spots lateral to ocelli, face with a thin band of microtomentum below antenna and lunule. Ocellar bristles at level of or just anterior to median ocellus. Subvibrissal and anterior genal bristles about 0.5X length of vibrissa.

Thorax black, mostly covered with microtomentum, proepisternum, a spot on anepisternum covering anterior three-fifths and ventral two-thirds, a spot on katepisternum behind fore coxa, and meron and posterior katepisternum shiny. Mesoscutum sculptured. Scutellum with scattered fine setae dorsally ( Fig. 11 ). Halter whitish.

Legs black, distal quarter to third of femora orange, basal quarter and distal tip of tibia orange, trochanters yellow. Fore tarsus with 3 basal tarsomeres ivory white and distal 2 pale brown in male, mid and hind tarsus in male and all tarsi in female with 2 basal tarsomeres ivory white and distal 3 pale brown. Mid tibia with one preapical anterodorsal, 4 subapical bristles. Hind tibia with one small ventroapical bristle.

Wing light brown, crossveins r-m and dm-cu pale.

Abdomen with tergites and sternites weakly sclerotized. Syntergite 1+2 with posterolateral corners and a thin band between them strongly sclerotized, tergites 3–4 with a thin posterior band moderately sclerotized. Pleural setae on small discs, about the diameter of spiracles.

Male postabdomen: Sternite 5 narrow, flared posteriorly, posterior margin with a shallow notch and interrupted row of setae, anterior apodeme short ( Fig. 48 ). Hypandrial arms with ventral tab-like structures. Surstylus paddleshaped. Pregonite fused with postgonite. Postgonite with lobes narrowly separated, anterior lobe rounded, posterior lobe narrow, pointed. Basiphallus with long epiphallus, broad, transparent preepiphallus. Distiphallus with strongly curved, spinose dorsal tube, pointed apically ( Fig. 47 ).

Female postabdomen: Tergite 6 not sclerotized, tergite 7 and sternite 6 sclerotized along anterior and lateral margins only, sternite 7 sclerotized around margins. Tergites with 3 posterior strips, sternites with 2 posterior strips. Tergite 8 emarginated anteriorly, covered with microtomentum. Epiproct with short anterior arms, microtomentum anteriorly, 1 pair of setae. Cerci broad. Sclerites of sternite 8 pointed anteriorly, posterior half broad, covered with microtomentum. Hypoproct broad, notched anteriorly. Spermathecae sausage-shaped, about 3X longer than wide, not invaginated.

Type material. Holotype ♂: BRAZIL: Minas Gerais: Barbacena, 20 km SW, dung traps, 25 Feb 1990, S.A. Marshall, debu01039317 ( MZSP). Paratypes: Paraná: Curitiba, 21 Aug 1960, N. Marston (12 ♂, 3 ♀, KSUC, USNM); as above but 23 Aug 1960 (1 ♂, KSUC); as above but campus, sweep in forest with Araucaria , 10 Feb 1990, S.A. Marshall (1 ♀, DEBU); Curitiba, 30 km SE, BR 277, dung traps, 6–9 Feb 1990, S.A. Marshall (2 ♀, DEBU, MZSP); Santa Catarina: Nova Teutônia, 300–500 m, 1 Aug 1938, F. Plaumann (1 ♀, BMNH); as above but 27 Sep 1938 (1 ♀, BMNH); as above but 4 Oct 1938 (1 ♀, BMNH).

Distribution. Southeastern Brazil (Fig. 111).

Etymology. The species name refers to the setose scutellum in this species. The name is a declinable adjective.

Figures

FIGURES 9 – 14. Boreantrops specimens, head and thorax, dorsal. 9) B. albipes; 10) B. avignis; 11) B. hispidus; 12) B. inbio; 13) B. subemarginatus; 14) B. zacapa. ads: additional setulae.

FIGURES 43 – 48. Boreantrops male terminalia. B. friburguensis: 43) phallus, postgonite, and phallapodeme, lateral view, 44) sternite 5; B. guatemalensis: 45) phallus, postgonite, and phallapodeme, lateral view, 46) sternite 5; B. hispidus: 47) phallus, postgonite, and phallapodeme, lateral view, 48) sternite 5.