Suwaia longicornis ( Hendel, 1913 ) Šifner, 2009

Šifner, František, 2009, Two new genera of the family Scathophagidae (Diptera), Acta Entomologica Musei Nationalis Pragae 49 (1), pp. 287-292 : 290-292

Suwaia longicornis ( Hendel, 1913) comb. nov.

( Figs. 5–9 )

Parallelomma longicornis Hendel, 1913: 877 . Parallelomma longicornis: VOCKEROTH (1977) : 437.

Type material examined. HOLOTYPE: J, CHINA: TAIWAN: ‘ Hoozan , Formosa, H. Sauter, 1911, 7.ii. // Parallelomma longicornis H., det. Hendel // Type [red label] ’. PARATYPES: J, the same data as holotype , ‘ Paratype [yellow label]’ / ‘Mus. Caes. Vindobon.’; J, ‘ Chip Chip , 909, iii., Formosa, Sauter’ ; ♀, ‘ Formosa , Sauter, Chip Chip, 909 / Parallelomma longicornis , det. Hend. / Type [red label] ’; 1 J 2 ♀♀ (1 J 1 ♀ dissected), ‘ Hoozan , Formosa, H. Sauter, 1911 / Parallelomma longicornis , det. Hendel / PARATYPE [yellow label]’ (all deposited in Naturhistorisches Museum,Wien, Austria).

Note. In the original description, HENDEL (1913) quoted: ‘11 JJ aus Hoozan, 7, Februar’ [= 11 JJ from Hoozan, 7 th February]. It is evident from the data above that this information was not precise. All specimens were deposited in the collection of Naturhistorisches Museum in Wien, Austria.There is no specimen of this species in the Museum für Naturkunde der Humboldt-Universität (Berlin, Germany) (J. Ziegler, pers. comm.) but it is possible that the remaining four paratypes will be found in future.

Redescription. Body length 7–9 mm. Ground colour brown to red-brown.

Head. Two very fine frontal bristles; three orbital bristles, inner and outer bristles long and straight; frontal vitta, parafacials, face and genae yellow-brown; scapus and pedicellus brown with one short bristle; first flagellomere rounded apically, three times as long as wide, in apical half darkened; second aristomere distinctly cylindrical; arista very sparsely plumose; frons arcuately receding proximally; two strong peristomal bristles and one very short bristle between them; palpi yellow, much narrowed basally, slightly curved upwards and with four distinct black bristles; genae with one strong bristle. Each eye slightly but visibly concave posteriorly.

Thorax. Acrostichal bristles very fine, arranged in two rows; five dorsocentral bristles (3 + 2); four supraalar bristles; two humeral bristles; one presutural bristle; one intraalar bristle; two scutellar bristles; one katepisternal bristle. Wings slightly fumous and with brown veins, vein R 1 without setae. Legs brown to yellow-brown, all femora dorsoapically black; fore femora with one distinct spine-like bristle on inner side and with a row of eight bristles dorsally.

Abdomen. Male. sternite 4 more or less square; lobes of sternite 5 short with very short spine-like bristles medially ( Fig. 5 ); cerci basally wide, with dense hairs, apically pointed; surstyli short, with hairs pointed ( Fig. 6 ). Pregonite with one apical and one dorsal bristles, postgonite distinctly arcuately curved and pointed (lateral view), epiphallus short with two lateral plates ( Fig. 7 ), base of distiphallus with two lateral membranous lobes reaching end of distiphallus ( Fig. 8 , dorsal view).

Female. Sternite 6 rectangular with four strong bristles caudally, sternite 7 wide and enlarged laterally upwards, sternites 8 narrow and smooth, without setae ( Fig. 9 , lateral view).

Figures

Figs. 5–9. Suwaia longicornis (Hendel, 1913). 5–8 – J paratype: 5 – abdominal sternites 4 to 5; 6 – cerci and surstyli (caudal view); 7 – pregonite and postgonite (lateral view); 8 – epiphallus, pregonites, postgonites and lateral membraneous lobes (dorsal view). 9 – ♀ paratype, abdominal stenites 6 to 8 (lateral view). Scale bars: 0.5 mm (Figs. 5–6, 9), 0.1 mm (Figs. 7–8).