Calyxochaetus insolitus

Runyon, Justin B., 2024, Revision of the genus Calyxochaetus Bigot (Diptera: Dolichopodidae: Sympycninae), Zootaxa 5539 (1), pp. 1-74 : 46

Calyxochaetus insolitus species group

Diagnosis. The C. insolitus species group is defined by males having fore tarsomere 1 relatively long, but not longer than tarsomere 2 ( Figs 97, 98 ). Males have mid tarsomere 2 not widened at apex or pointed anteroapically ( Figs 99–101 ). Scutellum without distinct blue-violet reflections.

Figures

FIGURES 95–103. Male antennae (lateral view), legs and known geographical distributions of the Calyxochaetus insolitus species group. 95. C. insolitus (Van Duzee). 96. C. pennarista (Harmston & Knowlton). 97. C. insolitus, fore tibia and tarsus, posterior view. 98. C. pennarista, fore tibia and tarsus, posterior view. Arrows show relatively long fore tarsomere 1. 99. C. insolitus, mid tarsus, posterior view. Inset shows mid tarsomeres in ventral view. 100. C. pennarista, left mid tarsus, dorsal view. 101. C. pennarista, right mid tarsus, dorsal view. 102. Known geographical distribution of C. insolitus. 103. Known geographical distribution of C. pennarista. Scale bars = 0.5 mm; arista-like styli approximately 1 mm long.