Nemopalpus stuckenbergi Wagner, 2012

Wagner, Rüdiger & Stuckenberg, Brian R., 2012, New fossil and extant species of Nemopalpus Macquart (Diptera: Psychodidae: Bruchomyiinae), African Invertebrates 53 (1), pp. 355-355 : 358-360

Nemopalpus stuckenbergi Wagner , sp. n.

Figs 5–10

Etymology: The species name is dedicated to the late Brian Roy Stuckenberg. Brian YLVLWHG &KLOH ZLWK WKH VSHFL¿F DLP RI FROOHFWLQJ Nemopalpus , but was only successful on the last day of his visit.

Description:

Male.

Head: Eyes oval, separated by ca 4 facet diameters. Scape 2× as long as wide, pedicel spherical, 1.5× as long as scape. Flagellomere segments elongate. Relative lengths of antennomeres: 4–6–40–27–27–24–22–22–21–18–17–15–15–13–11–10. Relative lengths of four visible palpus segments: 17–24–26–55.Area of Newstead scales present on second segment.

Thorax: Slide with wings probably lost and cannot be described.

Abdomen: With 8 pregenital segments plus terminalia. Terga of segments 6 and 7 each with lateral extensions clothed in ornamental setulae ( Fig. 5 ). Segment 8 and terminalia each rotated by ca 90°. Terminalia: Tergum 9 rectangular, with rounded distal margin ( Fig. 8 ). Tergum 10 conical, setose. Cercus oval, slightly longer than wide. Gonocoxite about 2× as long as its greatest width; in ventral and dorsal view appearing slightly EHQW, FORWKHG LQ VWURQJ VHWDH. *RQRVW\OXV DV ORQJ DV JRQRFR[LWH, EHQW ZLWK GLVWDO ³QRVH´. Aedeagus small, with sharp apex; vasa deferentia short and wide. Aedeagus sclerite thin, laterally depressed. Paramere dorsobasal to gonocoxite, appearing well sclerotized with short, curved tip ( Fig. 7 ).

Female.

Head with large oval eyes; separated by 3–4 facet diameters.Antenna: Scape 2× as long as wide, pedicel spherical, 1.5× as long as scape. Flagellar segments elongate; relative lengths of antennal segments: 4–6–32–19–19–19–16–16–16–14–14–13–11, distal segment lost. Flagellomere 1 with two pairs of ascoids, remainder with only single pair each in distal third. Paired ascoids slightly offset.Antenna of the female from the University 3DUN FRPSOHWH, LWV GLVWDOPRVW ÀDJHOORPHUH LV DSSUR[LPDWHO\ VDPH OHQJWK DV SHQXOWLPDWH with a short tip and pair of ascoids. Palpus with four visible segments; relative lengths: 17–27–20–82 [specimen from University Park differs in relative lengths of visible palpus segments: 18–25–20–55].

Thorax: (ORQJDWH OHJV ODFNLQJ VSHFL¿F IHDWXUHV.:LQJ OHQJWK:4.9 PP. 5DGLDO DQG PHGLDO forks at about same level.

Abdomen: Composed of seven pregenital segments of usual size and shape, tergum and sternum 8 conjoined to a thin sclerotised ring ( Fig. 9 ). Cavity of 9 th segment with two oval clusters of expanded setae ( Fig. 9 ). Spermatheca very large, consisting of two successive parts of unequal size ( Fig. 10 ); cercus small.

+RORW\SH: ƃ µ&KLOH:9DOGLYLD,SDUN DGMDFHQW WR XQLYHUVLW\,IRUHVW UHVLGXDO,.9,,.Ɨ987, OHJ.%.5. 6WXFNHQEHUJ¶ (NMSA). On single slide mount; wings missing.

3DUDW\SHV: ƗƂ VDPH GDWD DV KRORW\SH, Ɨ VOLGH ZLWK OHJV DQG ZLQJ, Ɨ VOLGH ZLWK KHDG, WKRUD[DQG ZLQJ; ƗƂ µ&KLOH: 9DOGLYLD,,VOD 7HMD, VZDPS\ ZRRGODQG QHDU XQLYHUVLW\ IDUP, Ɨ 'HF>HPEHU@ Ɨ984, OHJ. -.$. 'RZQHV>ƗϬϬ7/,/4Ϭ@¶ (ERWK 106$).

Notes: The male terminalia are in general similar to N. rondanica Quate & Alexander, 2000 ( Brazil, Rondônia) and N. stenhygros Quate & Alexander, 2000 ( Brazil, Pará) ( Quate &Alexander 2000), but both those species lack extended abdominal tergites and ornamental setulae. The presence of clusters of setae in the female genital cavity is also not unique to the new species, similar structures having been mentioned in N. GDPS¿DQXV Alexander, 1940 by Fairchild (1952), and Brian Stuckenberg (pers. comm., 2004) noted µXQPRGL¿HG VHWXODH¶ LQ WKH VDPH DUHD LQ IHPDOHV RI N. australiensis Alexander, 1928 .

Figures

Figs 5–8. Nemopalpus stuckenbergi Wagner, sp. n., male: (5) abdomen, segments 4–8 and terminalia, lateral view (note tufts of ornamental setulae on lateral extensions of tergites 6 and 7, and torsion of segment 8 and terminalia); (6) cleared terminal pregenital segments and terminalia, lateral view (ornamental setulae on lateral extensions of terga 6 and 7 removed); (7) abdominal segments 6 to 8 and terminalia, ventral view (ornamental setulae on terga 6 and 7 removed); (8) terga 9–10 and cerci, GRUVDO YLHZ. ($OO ¿JXUHV E\ %6). 6FDOH EDUV = Ɵ.ƽ PP.

Figs 9, 10. Nemopalpus stuckenbergi:DJQHU, VS. Q., Ƃ SDUDW\SH IURP,VOD 7HMD: (9) DEGRPHQ, VHJPHQWV 7±8 DQG WHUPLQDOLD,ODWHUR‒YHQWUDO YLHZ; (ƗƟ) VSHUPDWKHFD (VDPH VFDOH DV ¿J. 9). ($OO ¿JXUHV E\ %6). Scale bar = 0.2 mm.