Sympistis bes Troubridge 2008, sp. n.
Creators: name: Troubridge, J. T.
Publisher: name: Zenodo
Year: 2008
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Noctuidae
Sympistis
Sympistis bes

description: Sympistis bes Troubridge sp. n.   
(Figs. H-12, N-6, T-3)  
 Diagnosis. Sympistis bes is about the same size as Sympistis sectilis (Smith) comb. n.. Both species have a pure white hindwing and gray forewing and occur in Texas. They are easily separated by antemedial and postmedial lines, which are thin and black in S. sectilis, pale gray in S. be s.   
 Description. Antennae filiform, head, prothoracic collar, thorax and tegulae gray –all scales gray with thin white line at apex; abdomen light silvery gray. Coremata with brushes, levers, and pockets absent from base of male abdomen. Forewing length 15-19 mm. Dorsal forewing ground color gray; postmedial and antemedial lines slightly lighter gray than ground color of wing; postmedial line edged distally by lighter gray scales than ground color of wing; subterminal line if present, only slightly lighter than ground color of wing; orbicular spot gray, encircled by single row of dark gray scales; reniform spot charcoal gray encircled by white inner and black outer rows of scales; terminal line black; fringe concolorous with forewing ground color. Dorsal hindwing brilliant white with a few gray scales near margin; terminal line black; fringe white. Male genitalia. (Fig. N-6) Tip of valve with apical and ventral spines and no distinct corona; sacculus elevated basal to ampulla of clasper; ampulla of clasper swollen basally at apex; terminal spine arcing from posterior margin. Vesica with small subbasal diverticulum on left, bends abruptly downward and then to the right; a small patch of long, sparse cornuti occurs dorsally at base; as vesica bends to right, ribbons of long, dense cornuti on the left and right through the bend –a ventral, subapical patch of long cornuti joins these two ribbons; a long, stout spine-like cornutus occurs ventrally at apex. Female genitalia. (Fig. T-3) Ovipositor lobes rounded, short, subapical, spine-like setae occur randomly in patches rather than in a straight line; ductus bursae heavily sclerotized on ventral surface narrows abruptly at appendix bursae; elongate appendix bursae gradually narrows as it bends around 170° to ductus seminalis; ductus seminalis with balloon-like swelling at junction of appendix bursae, its volume approaching that of appendix bursae; corpus bursae ellipsoidal with elongate dorsal and ventral signa, adjoins appendix bursae via narrow constriction near ductus bursae.   
 Type material. Holotype male: USA, Texas, Culberson Co., 10 mi. N. of Van Horn, 2 ix 1979, in the CNC. Paratypes: 4♂ 3♀: Texas: Panther Junction, Big Bend National Park, 19 iv 1959, M. R. MacKay, 1♂ 1♀; Paint Gap Hills, Brewster Co., Big Bend National Park, 4 iv 1984, E. Knudson, 1♂; Paint Gap Hills, Brewster Co., Big Bend National Park, 2 iv 1984, E. Knudson, 1♂; Saucedo, Presisio Co., Big Bend Ranch SNA, 22-23 iii 1993, E. Knudson, 1♀; Government Spring, Brewster Co., Big Bend National Park, 12 ix 1982, E. Knudson, 1♀; Cuevas Amarillas, Presisio Co., Big Bend Ranch SNA, 23 iii 1993, E. Knudson, 1♂.   
 Etymology. From Egyptian mythology, Bes is dwarf god who guards against evil spirits, snakes, and misfortune. It is a noun in apposition.   
 Distribution. Southern Texas.
description: Published as part of Troubridge, J. T., 2008, A generic realignment of the Oncocnemidini sensu Hodges (1983) (Lepidoptera: Noctuidae: Oncocnemidinae), with description of a new genus and 50 new species, pp. 1-95 in Zootaxa 1903 (1) on page 43, DOI: 10.11646/zootaxa.1903.1.1, http://zenodo.org/record/5134476