Biphallapodema polydentata, Papp, László, 2014

Papp, László, 2014, New genera of Afrotropical limosinine sphaerocerids (Diptera: Sphaeroceridae), Zootaxa 3764 (2), pp. 101-130 : 109-110

Biphallapodema polydentata sp. n.

( Figs 28–38 )

Type material. Holotype male ( HNHM, body in a good quality canada balsam preparation, abdomen and genitalia prepared and kept in a plastic microvial with glycerol): CONGO: Brazzaville, ORSTOM park, J. Balogh & A. Zicsi - soil traps around leaf-compost, No. 211, 18. XI. 1963, 2 days.

Paratypes ( HNHM): 1 male (abdomen and genitalia prepared and kept in a plastic microvial with glycerol): ibid., S. Endrődy—Younga— 30. XII. 1963, excrement trap, No. 561. 2 males, 1 male 1 female, 2 females, 1 male (complete bodies in canada balsam preparations): same data; 1 male (pinned, abdomen and genitalia prepared and kept in a plastic microvial with glycerol): same data.

Description. Measurements in mm: body length 1.21 (holotype), 1.15–1.62 (paratypes); wing length 1.12 (holotype), 1.10–1.32 (paratypes); wing width c. 0.45 (holotype), 0.44–0.51 (paratypes).

Male. Sternite 5 ( Figs 28–29 ) with a pair of short blunt medio-caudal emarginations, which bear broad processes of 11–12 long flat pegs each. Synsternite ( Fig.30 ) as described under the genus. Figure 31 is to illustrate the whole epandrial complex with hypandrium and cercal parts and subepandrial sclerite. The fusion of the two halves is ventrally actually more broad, as given on the Figure 32 . Surstylus ( Fig. 35 ) with broad blunt apical part (in contrast to B. oligodentata ). Basiphallus ( Fig. 34 ) less robust, its epiphallus thicker than in B. oligodentata . Base of postgonite seems less strongly fused to ventral branch of connecting sclerite ( Fig. 33 ), postgonite with a comparatively long sharp anterior apical process, caudal process also sharp in lateral view.

Female genitalia with round epiproct, which bears a pair of short thick setae ( Fig. 36 ). Hypoproct ( Fig. 37 ) subtriangular, its medial part more sclerotised, and a larger part than its apical half strongly sclerotised with short hairs, and bears a pair of long thick setae subapically. Cercus long ( Fig. 36 ); with 3 pairs of long apical and subapical setae, apical seta tends to be incurved. Spermathecae ( Fig. 38 ) longer than broad (contrary to B. oligodentata ), with a narrowed proximal part, but sclerotised ducts are very similar to the other species with their distal bulb.

Etymology. The specific epithet of this new species (‘polydentata’ = numerous teeth) refers to the highnumbered (11–12 each) pegs on the pair of processes on male sternite 5.

Figures

FIGURES 28 – 32. Biphallapodema polydentata sp. n., male postabdomen. 28 = sternite 5, ventral view, 29 = medio-caudal part of sternite 5 in higher magnification, 30 = synsternite, ventral view, 31 = epandrium and hypandrium, subanteriorsubventral view, 32 = ventral part of epandrium, caudal view. Scale bars: Figs 28, 30 – 31 = 0.2 mm, Figs 29, 32 = 0.1 mm.

FIGURES 33 – 38. Biphallapodema polydentata sp. n., male and female genitalia. 33 – 35 = paratype male. 33 = postgonite and phallapodeme with their connecting sclerite, left lateral view, 34 = phallus, left lateral view, 35 = surstylus with ventral part of epandrium, lateral view, 36 – 38: paratype female. 36 = epiproct and cerci, dorsal view, 37 = hypoproct, ventral view, 38 = spermathecae. (con: connecting sclerite, PG: postgonite). Scale bar: Figs 33 – 38 = 0.1 mm.