Nipponentomon californicum
Year: 2025
Type: other
Abstract: Nipponentomon californicum (Hilton, 1929) (Figs. 24–38, 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). Setae l3, sd4 and sd5 setiform, seta l3 shorter than setae sd4 and sd5, lengths 9 μm and 14 μm, respectively (Figs. 25, 26). Maxillary palps with slender sensilla. Labial palps with tuft of setae, three setae and sausage-like sensillum (Fig. 27). Maxillary gland with small, weakly granulated calyx and large proximal appendage, (Tuxen 1964): Fig. 397), (Fig. 28). 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). Mesonotum with three pairs of A -setae, metanotum with four pairs of A -setae (Figs. 24, 31). 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). All setae on thoracic sterna and on abdominal sternites setiform (Figs. 32–36). Sternite I with five A -setae (Fig. 37), not with 3 three A -seta as written in Tuxen’s monograph (1964). Meso- and metanota with pores al and sl (Figs. 24, 31). Prosternum with a sam pore (Fig. 34). Meso- and metasterna with two sam pores (Figs. 35, 36). Pores psm present on tergites I–VII, psl present on tergites I–VI (Fig. 31) and absent on tergite VII, al on tergites II–VII. Sternites I–VI with spm pore (Fig. 37). Sternite VII with sam pore, situated on connecting line, and with a pair of spsm pores (Fig. 32). Sternite VIII with a central sc pore, sternites IX–X with sam pore (Fig. 33). 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.
Language: English
Domain: Life Sciences
Open Access status: green
OpenAlex ID: W6930678371
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