Dicerca mutica LeConte, 1860

Hansen, Jason A., Basham, Joshua P. & Nalepa, Christine A., 2021, New adult host records for three Buprestidae (Coleoptera) rarely encountered in the United States and significant extension of the known geographic range of Agrilus pilosicollis Fisher, Insecta Mundi 2021 (869), pp. 1-6 : 5-6

Dicerca mutica LeConte, 1860

TEXAS: McLennan Co., Harris Ck. Hike n Bike Path @ Old Loreana & Church Rds., 31.474449, −97.279180, 17.v.2013 (1♂), on Osage orange tree [ Maclura pomifera (Raf.) C.K. Schneid ], coll: J.A. Back. New adult host record.

nal sternite, emargination with broad, truncate tooth indicated. e) Convex prosternal process.

Dicerca mutica is known from only six published specimens ranging from northeastern New York to Texas. The single female record from Texas ( Knull 1947) lacks specific locality data. The specimen reported here represents the only other record from Texas ( Fig. 3a–e ). At 18 mm in length, it is much larger than previously reported males (15.3–16.0 mm), but still within the size range of the species (15.2–20.0 mm). Though no larval host is known, there is a report of an adult male found on Acer saccharum saccharum Marsh in Missouri ( Nelson et al. 1981). The adult host record of M. pomifera is intriguing given that A. saccharum , previously the only adult host record, is not known from Texas, while M. pomifera is widely distributed throughout Missouri, including the counties where D. mutica has been collected previously. Other records from New York and Maryland also come from areas where M. pomifera is present. Though it may be an incidental association, the possibility that M. pomifera may serve as a larval host merits further investigation.

Dicerca mutica most closely resembles D. lurida (Fabricius) and related species but can be separated by the elytral apices being entire, produced slightly at suture, and by having the prosternal process convex (♂) to flat (♀) rather than concave.

Figures

Figure 3. Dicerca mutica LeConte, ♂. a) Dorsal view. b) Ventral view. c) Lateral view. d) 5th abdomi-