Nipponentomon californicum ( Hilton, 1929 )

Nipponentomon californicum ( Hilton, 1929) View in CoL

( Figs. 24–38 View FIGURES 24–38 , Table 3 View TABLE 3 )

= Acerentulus californicum Hilton, 1929

Material examined. Neotype female (no. 65892) from Cobell’s Canyon , Claremont, California, January 1938, determined by Hilton as Acerentulus californicus ( Bonet & Tuxen 1960) .

Remarks. Bonet & Tuxen (1960) synonymized this species with Acerentomon occidentalis Ewing, 1940 and redescribed it as Acerentulus californicus Hilton, 1929 . Tuxen (1964) confirmed this synonymization and added some additional figures and a chaetotaxic formula.

Additional description. Labium protruded; additional cephalic setae d6 absent on head ( Fig. 24 View FIGURES 24–38 ). Setae l3, sd4 and sd5 setiform, seta l3 shorter than setae sd4 and sd5, lengths 9 μm and 14 μm, respectively ( Figs. 25, 26 View FIGURES 24–38 ). Maxillary palps with slender sensilla. Labial palps with tuft of setae, three setae and sausage-like sensillum ( Fig. 27 View FIGURES 24–38 ). Maxillary gland with small, weakly granulated calyx and large proximal appendage, ( Tuxen 1964): Fig. 397), ( Fig. 28 View FIGURES 24–38 ). Foretarsus as in Tuxen (1964: Fig. 398). Setae β1 and δ4 on foretarsus slender and sensilliform, equal in shape and length (16 μm), slightly shorter than δ5- seta ( Figs. 29, 30 View FIGURES 24–38 ). Mesonotum with three pairs of A -setae, metanotum with four pairs of A -setae ( Figs. 24, 31 View FIGURES 24–38 ). Length ratio of P1: P1a: P2 on mesonotum as 1.0:1.0:1.4. Accessory setae P1a on nota and tergites setiform, on nota long, equal with P1 setae, on tergites shorter (15–17 μm), equal in length with setae P2a. Setae P2a and other accessory setae on nota and sternites short, 8 and 15 μm, respectively ( Figs. 24, 31, 32 View FIGURES 24–38 ).

All setae on thoracic sterna and on abdominal sternites setiform ( Figs. 32–36 View FIGURES 24–38 ). Sternite I with five A -setae ( Fig. 37 View FIGURES 24–38 ), not with 3 three A -seta as written in Tuxen’s monograph (1964). Meso- and metanota with pores al and sl ( Figs. 24, 31 View FIGURES 24–38 ). Prosternum with a sam pore ( Fig. 34 View FIGURES 24–38 ). Meso- and metasterna with two sam pores ( Figs. 35, 36 View FIGURES 24–38 ). Pores psm present on tergites I–VII, psl present on tergites I–VI ( Fig. 31 View FIGURES 24–38 ) and absent on tergite VII, al on tergites II–VII. Sternites I–VI with spm pore ( Fig. 37 View FIGURES 24–38 ). Sternite VII with sam pore, situated on connecting line, and with a pair of spsm pores ( Fig. 32 View FIGURES 24–38 ). Sternite VIII with a central sc pore, sternites IX–X with sam pore ( Fig. 33 View FIGURES 24–38 ).

Body measurements (female, in μm): body length 1360, head 145, pseudoculus 8, distal part of maxillary gland 25, pronotal seta 1 49, pronotal seta 2 19, mesonotal P1 38, mesonotal P1 a 37, mesonotal P2 54, mesonotal P2 a 8; foretarsus 92, claw 30, empodial appendage 5.