Lispe tentaculata (De Geer, 1776)

Ge, Yingqiang, Gao, Yunyun, Yan, Liping, Liu, Xianhui & Zhang, Dong, 2016, Review of the Lispe tentaculata-group (Diptera: Muscidae) in China, with one new synonym, Zoosystema 38 (3), pp. 339-352 : 342

Lispe tentaculata -group

Lispe tentaculata -group Synder, 1954: 6. — Hennig 1960: 408. — Xue & Zhang 2005: 122. — Vikhrev 2011: 59; 2014: 153.

DIAGNOSIS. — The Lispe tentaculata -group is distinguished from other species-group of this genus by the following characters (modified from Snyder 1954, Hennig 1960 and Vikhrev 2011, 2014): arista plumose, palpi abruptly expanded in apical half; meron setulose above hind coxa and the following leg chaetotaxy: fore tibia mostly without p setae (only present in L. alpinicola and some aberrant L. tentaculata ); mid tibia mostly with 1 p (3 p in L. alpinicola ), hind tibia with 1 weak pd and 1 strong ad.

Herein, we update the diagnosis with more detailed genital characters of both sexes (some male genital characters have been mentioned by Snyder 1954) and bring up the distinctive characteristics of two subgroups:

Male: fifth sternite with a median, anteriorly directed process in addition to the short and apically semi-membranous lateral processes; cercal plate with an inverted U- to V-shaped incision on each side ( Fig. 1 ); gonopod degenerated and fused with hypandrium into a projection ( Figs 6 ; 7 ); phallus non-membranous.

Female: abdominal tergites 6 and 7 sometimes divided medially ( L. consanguinea and L. tentaculata ), abdominal sternite 6 sometimes degraded into 2 small semi-transparent setulose sclerites ( L. consanguinea and L. tentaculata ), abdominal tergite 7 fused with sternite 7, abdominal tergite 8 partly fused with sternite 8, epiproct divided medially into 2 setulose sclertites, cerci with appendage ( Figs 3 ; 4 ).

– L. tentaculata -subgroup: first fore tarsomere modified (except L. sociabilis ); phallus straight.

– L. orientalis -subgroup: first fore tarsomere regular; phallus with a vertically bended diatal part.

– Chinese Species:

– L. tentaculata -subgroup: L. alpinicola Zhong, Wu & Fan, 1981 ; L. consanguinea Loew, 1858 and L.tentaculata (DeGeer, 1776) .

– L. orientalis -subgroup: L. orientalis Wiedemann, 1824 and L. sericipalpis Stein, 1904 .

Figures

FIG. 1. ─ Male terminalia of Lispe tentaculata-group,ventral view:A, L. consanguinea Loew, 1858; B, L. orientalis Wiedemann, 1824; C, L. sericipalpis Stein, 1904; D, L. tentaculata (De Geer, 1776). Scale bars: 0.25 mm.

FIG. 6. ─ SEM images of male genitalia of Lispe orientalis Wiedemann, 1824 (A, C, E) and L. sericipalpis Stein, 1904 (B, D, F): A, B, genitalia, anterior views; C, D, origins of parameres; E, F, distal part of phalli. Scale bars: A, 200 μm; B, 120 μm; C, D, F, 40 μm; E, 80 μm.

FIG. 7. ─ SEM images of male genitals of Lispe orientalis Wiedemann, 1824 (A, B) and L. sericipalpis Stein, 1904 (C, D): A, C, genitals, lateral views; B, D, de- generated gonopods fused with hypandrium, lateral view (arrows). Scale bars: A, C, 120 μm; B, D, 40 μm.

FIG. 3. ─ Female abdomen and terminalia of Lispe consanguinea Loew, 1858 (A, C, E) and L. orientalis Wiedemann,1824 (B, D, F). A, B, dorsal view; C, D, lateral view; E, F, ventral view. Scale bars: 0.50 mm. Abbreviations: see Material and methods.

FIG. 4. ─ Female abdomen and terminalia of Lispe sericipalpis Stein, 1904 (A, C, E) and L. tentaculata (De Geer, 1776) (B, D, F). A, B, dorsal views; C, D, lateral views; E, F, ventral view. Scale bars: 0.50 mm. Abbreviations: see Material and methods.