Cephalispa Malloch

Yoshizawa, Satoshi & Tachi, Takuji, 2016, Taxonomic study of the genus Cephalispa Malloch of Japan (Diptera: Muscidae), Zootaxa 4132 (4), pp. 540-550 : 540-541

Genus Cephalispa Malloch

Lispocephala (Cephalispa) Malloch, 1935: 658 . Type species: Lispocephala scutellata Malloch, 1935 (by original designation).

Diagnostic characters of Japanese species (male and female). Head. Face, parafacial, gena, vertex and occiput black with gray pruinosity; fronto-orbital plate black with yellowish gray pruinosity; frontal vitta, scape, pedicel and prementum cream yellow. Vertex approximately 0.2 times as wide as head width; parafacial 0.3‒0.5 times as wide as first flagellomere; gena 0.06‒0.11 of eye height; ocellar triangle not reaching lunula; 2‒3 frontal setae; 2 reclinate orbital setae; several setulae present on fronto-orbital plate; ocellar seta fine; compound eye bare. Antenna with first flagellomere 1.7‒2.0 times as long as pedicel; arista plumose.

Thorax. Dorsum black in ground color with yellowish gray pruinosity; postpronotum and pleura black in ground color with cream yellow pruinosity. Two postpronotal setae; acrostichal seta fine; 2 presutural and 3 postsutural dorsocentral setae; 1 presutural and 1‒3 postsutural intra-alar setae; 0 presutural and 1 postsutural supra-alar setae; 2 notopleural setae; 2 postalar setae; basal scutellar seta as long as apical one; 2‒3 proepisternal setae; 1‒3 proepimeral setae; 4‒5 anepisternal setae; 3 katepisternal setae, forming equilateral triangle; anepimeron, katepimeron, meron, katatergite and anatergite bare; prosternum bare.

Wing. Brownish hyaline; tegula, basicosta and all veins brown; upper and lower calypters cream; halter cream yellow. Vein M not bending anteriorly at apical part; distance of M between crossveins r-m and dm-cu narrower than that between crossvein dm-cu and wing margin; crossvein dm-cu straight, slightly shorter than ultimate section of vein CuA1.

Legs. Coxae, trochanters, femora, tibiae and tarsi cream yellow; pulvilli and claws brown. Fore tibia with 2 preapical dorsal and 2 apical ventral setae; mid tibia with 2 posterodorsal, 2 preapical dorsal and 3 apical ventral setae; hind tibia with 2 anterodorsal, 2 preapical dorsal and 2 apical ventral setae.

Abdomen. Syntergite 1+2 with 0‒3 black spots; 3rd to 5th tergites with 2 black spots. Fifth tergite with several discal and marginal setae; male 5th sternite broad and bifurcated posteriorly in ventral view.

Male terminalia. Sixth tergite strongly reduced; 6th sternite slender and symmetric; epandrium semicircular with many setae in dorsal view; surstylus fused with epandrium at base; cerci slender with some setae in dorsal view; pregonite strongly reduced; postgonite varied in shape.

Female terminalia. Sixth to eighth tergites with several setae on posterior margin; 8th sternite strongly reduced.

Remarks. The previous records of Cephalispa were from the Oriental, Australasian and Afrotropical regions ( Couri & Pont, 1999). In this study, the species of Cephalispa are newly recorded from Japan.