Calyxochaetus pictipes (Harmston & Knowlton)

Runyon, Justin B., 2024, Revision of the genus Calyxochaetus Bigot (Diptera: Dolichopodidae: Sympycninae), Zootaxa 5539 (1), pp. 1-74 : 66

publication ID	https://doi.org/ 10.11646/zootaxa.5539.1.1
publication LSID	lsid:zoobank.org:pub:7BDB9666-CA90-40BF-8F65-B9897CDA1F2B
persistent identifier	https://treatment.plazi.org/id/FD1A87BF-A56D-FFA4-50D3-FF44FDC1F9F1
treatment provided by	Plazi
scientific name	Calyxochaetus pictipes (Harmston & Knowlton)
status

Treatment

( Figs 107 View FIGURES 104–119 , 125 View FIGURES 120–131 , 145 View FIGURES 144–146 )

Sympycnus pictipes Harmston & Knowlton, 1940: 401 View in CoL .

Calyxochaetus pictipes : Pollet et al. (2004: 74).

Type material examined. HOLOTYPE ♂, labeled: “ Kanosh Cany / July 28, 1939 ”; “ G.F. Knowlton / F.C. Harmston ”; “HOLOTYPE/ Sympycnus / pictipes / n. sp. F.C.H. – G.F.K”; “ Sympycnus / pictipes H. & K./ Det. 1940 F.C. Harmston”; “Type No/ 54296/ USNM” ( USNM) . PARATYPE: USA: Utah: Washington County: Leeds , 1.x.1939, G.F. Knowlton & FCH (1♂, USNM) .

Other material examined. USA: Arizona: Apache County: Springerville, Little GoogleMaps Colorado River GoogleMaps , 1.vii.1953, W.W. Wirth (1♂, USNM); Cochise County GoogleMaps : 6 mi. W Portal, 23.vi.1968, FCH (6♂, FSCA); Southwestern Research Station GoogleMaps , Portal GoogleMaps , 23.vi.1968, V.D. Roth & FCH (2♂, FSCA); Garden Canyon GoogleMaps , Huachuca Mts GoogleMaps , 5300 ft, 16.iv.2003, JBR & RLH (2♂, MTEC); South Fork Cave Creek GoogleMaps , N31°52.70’ W109°10.69’, 6.iv.2011, JBR (1♂, MTEC); Graham County GoogleMaps : Twilight Spring, Pinaleno Mts GoogleMaps , 7100 ft, 26.vi.2001, RLH & JBR (2♂, MTEC); Gila River GoogleMaps , Safford, 25.iv.2002, RLH & JBR (4♂, 3♀, MTEC); Greenlee County GoogleMaps : Chase Creek GoogleMaps , Granville campground, 27.iv.2001, RLH & JBR (4♂, 3♀, MTEC); same data except, San Francisco River GoogleMaps , Clifton (1♂, 1♀, MTEC); Pima County GoogleMaps : Cienega Creek GoogleMaps Preserve, N32°01.09′ W110°38.58′, 3.iv.2016, JBR (5♂, MTEC); Santa Cruz County GoogleMaps : Madera Canyon, 14.iv.1962, P.A. Rude (1♂, 1♀, EMEC); Madera Canyon, 25.iv.2001, RLH & JBR (1♂, MTEC); Patagonia, 27.vi.1953, W.W. Wirth (1♂, USNM); Sonoita Creek GoogleMaps near Patagonia Lake GoogleMaps inlet, 3775 ft, N31°29.95′ W110°50.69′, 3.iv.2016, JBR (1♂, MTEC); Tubac, 29.ix.1972, FCH (2♂, FSCA). New Mexico: Catron County: Reserve, 25.vi.1968, FCH (6♂, 1♀, FSCA); Glenwood GoogleMaps , 1.vi.1972, Malaise, W.W. Wirth (1♂, USNM); Grant County GoogleMaps : Silver City GoogleMaps , 25.vi.1968, FCH (5♂, FSCA); Pinos Altos GoogleMaps , Cherry Creek GoogleMaps , 22.vi.1953, W.W. Wirth (1♂, 2♀, USNM); Iron Creek GoogleMaps near Wright’s Cabin GoogleMaps campground, 32°54.8′N 107°46.8′W, 7600 ft, sweep along creek, 14.viii.2007, S.E. Brooks (1♂, CNC); Torrance County GoogleMaps : Manzano Mts GoogleMaps , 8 mi. W Tajique, 4th of July campground, 7500 ft, 11–12.viii.1993, J.E. O’Hara (2♂, CNC); same data except, 22.v.2013 (2♂, 3♀, CNC). Utah: Beaver County: Beaver, 19.v.1940, G.F. Knowlton & FCH (1♂, LACM); Kane County GoogleMaps : Lick Wash GoogleMaps narrows below Skutumpah GoogleMaps road, 37°21′53″N 112°11′19″W, 29.v.2000, #7065, C.R. Nelson (1♂, BYU); Washington County: Leeds, 17.v.1940, G.F. Knowlton & FCH (1♂, USNM); same data except, 22.vi.1940 (1♂, USNM); Santa Clara, 19.vii.1941, G.F. Knowlton & FCH (4♂, CNC).

Diagnosis. Males can be recognized by the unmodified arista-like stylus ( Fig. 107 View FIGURES 104–119 ), infuscated metepimeron, and form of the mid tarsus ( Fig. 125 View FIGURES 120–131 ). This species is related to C. desertus and C. sobrinus (see diagnosis for C. desertus ).

Redescription. Male. Wing length 2.9–3.2 mm. Similar to C. desertus except as noted: Head: Arista-like stylus ( Fig. 107 View FIGURES 104–119 ) unmodified, slender, evenly tapered to point, with very short microtrichia (often appearing bare). Legs: Midleg: Tarsomere 2 1.5X longer than combined length of tarsomeres 3–4. Tarsomere 5 slender, distinctly longer than combined length of tarsomeres 3–4 ( Fig. 125 View FIGURES 120–131 ).

Female. Wing length 2.8–3.2 mm. Similar to C. desertus except arista-like stylus with apex sharply pointed, not blunted.

Distribution and seasonal occurrence. Known from Arizona, New Mexico and Utah ( Fig. 145 View FIGURES 144–146 ). Adults have been collected from April to October.