160 Rowland M. Shelley 



Montaphe elrodi (Chamberlin) 

 Figs. 33-39 

 Leptodesmus (Chonaphe) elrodi Chamberlin, 1913:424-426, fig. 17. 

 Amphelictogon elrodi: Attems, 1938:159, fig. 179. 

 Montaphe elrodi: Chamberlin, 1949:127. Causey, 19546:82. Chamberlin 



and Hoffman, 1958:38. Loomis and Schmitt, 1971:113-114. Kevan, 



1983:2968. 



Type specimens — Male lectotype (NMNH) and 9 male and 4 

 female paralectotypes (MCZ, NMNH) collected by C. C. Adams in 

 the summer of 1912 at an unknown site on Flathead Lake, Flathead/ 

 Lake counties, Montana. 



Diagnosis — Prefemoral process long and narrow, blade-like, bent 

 abruptly dorsad near midlength, with broad, irregular, and usually 

 subdivided projection proximal to bend and 5-13 strong, distal barbules; 

 acropodite narrowly blade-like basally, acicular distad, narrowing constant- 

 ly throughout length, without projections, usually looping over pre- 

 femoral process near bend of latter. 



Color in life — Paranota rust-colored, metaterga black with broad, 

 rust-colored bands along caudal margins. 



Lectotype — Length 27.5 mm, maximum width 4.1 mm, W/L ratio 

 14.9%, D/W ratio 70.1%. Body essentially parallel sided throughout 

 length, tapering at anterior and posterior ends. 



Head capsule smooth, polished; epicranial suture shallow, indistinct. 

 Antennae relatively short and broad, reaching back to anterior part of 

 4th tergite; relative lengths of antennomeres 2>3=4=5>6>1>7. Genae 

 with faint central impressions. Facial setae as follows: epicranial 1-1, 

 interantennal and frontal not detected and presumed absent, genal 1- 

 1, clypeal about 10-10, labral about 12-12. 



Collum broad, ends extending slightly below those of adjacent 

 tergite. Paranota well developed throughout body, broadest on segments 

 1-6, caudolateral corners squared on segments 2-3, blunt on 4-5, 

 rounded on 6-16, angling caudad on 17-18. Peritremata broad, distinct, 

 strongly elevated above paranotal surface; ozopores opening dorsolaterad. 



Sides of metazonites smooth, polished. 5th sternum moderately 

 depressed between caudal (5th) legs to accommodate apices of telopodites. 

 Postgonopodal sterna with broad, shallow central impressions and narrow 

 transverse grooves originating between leg pairs, caudal margins gently 

 curved. Coxae and prefemora without projections. 



Gonopodal aperture ovoid, 1.7-mm wide and 0.6-mm long at 

 midpoint, without indentations, sides and anterior margin flush with 

 segmental surface, caudal margin strongly elevated into two broadly 

 rounded, caudolateral lobes, lower in midline. Gonopods in situ (Fig. 



