Hallomenus (Xeuxes) serricornis LeConte, 1878

Johnston, M. Andrew, Warner, William B. & Pollock, Darren A., 2024, New Records and a Checklist of Melandryidae and Tetratomidae Known from Arizona, USA (Coleoptera: Tenebrionoidea), The Coleopterists Bulletin 78 (1), pp. 53-60 : 58

Hallomenus (Xeuxes) serricornis LeConte, 1878 ( Figs. 3C, D )

Hallomenus serricornis LeConte 1878: 619 .

Xeuxes brevicollis Champion 1889: 86 .

Literature Records: None.

Digital Records: None.

Specimens Examined : “ USA: Arizona, Cochise Co // Chiricahua Mtns, Barfoot // Park 31.9165, ­109.2803 // 16.VII.2023 M.A. JOhnstOn” (1 MAJC) ; “ Arizona: Cochise Co. // Chiricahua Mountains, South- // western Research Station 1645m // 31 53.006’N, 109 12.355’W // 12­21 July 2023 S. W. Lingafelter // UV-LED entolight (365-395 nm)” (1 ASUHIC) ; “ USA: AZ: Cochise Co. // Huachuca Mts. ; 0.8 rd. // mi. SW Reef; 31.4238 // -110.2991; July 15­24 // 2018; VFlight intercept //trap; W.B. Warner ” (2 ASUHIC) .

Notes. New state record. Nikitsky (1998) first recognized Xeuxes Champion, 1889 as a subgenus of Hallomenus Panzer, 1794 and transferred H. serricornis into it. Pollock (2015) listed the species-level synonymy presented above. The type locality of H. serricornis is Marquette, Michigan, while that of X. brevicollis is Ciudad Durango, Durango, Mexico. This is the first report from Arizona and may indicate that the species is widespread in high elevations of the Sierra Madres and associated sky islands in northwestern Mexico and southwestern United States. Six digitized records of this species are available frOm the San JacintO Mountains of southern California identified by DAP and deposited in SBMNH, further exemplifying its wider distribution in the southwest. The two specimens collected from the Huachuca Mountains in the same trap are both females; one is jet black while the other has a piceous head and chestnut-brown body. It seems clear that this species, like H. scapularis , presents a range of color variation.

Figures

Fig. 3. Tetratomidae spp., all scale bars = 1 mm. Hallomenus scapularis: A) Dorsal habitus, B) Lateral habitus. H. serricornis: C) Dorsal habitus, D) Lateral habitus. Tetratoma concolor: E) Dorsal habitus, F) Lateral habitus.