Anillinus montrex Harden & Caterino, 2024

Harden, Curt W. & Caterino, Michael S., 2024, Systematics and biogeography of Appalachian Anillini, and a taxonomic review of the species of South Carolina (Coleoptera, Carabidae, Trechinae, Anillini), ZooKeys 1209, pp. 69-197 : 69-197

Anillinus montrex Harden & Caterino, 2024

Figs 2 H , 10 C, I , 21 L , 24 L , 34 A

Anillinus montrex Harden & Caterino, 2024: 25.

GenBank.

OR 853113, OR 853294, OR 839300, OR 839565, OR 837884, OR 838029, OR 838218, OR 838127, OR 839566, OR 839299, OR 839567, OR 837885, OR 838030, OR 838219.

Diagnosis.

Members of this species are strongly flattened dorsoventrally, narrow, and parallel sided (Fig. 34 A ). Males have the first and second protarsomeres expanded and spinose on inner margin with ventral adhesive setae; the male second protarsomeres of this species are more enlarged than any other known Anillinus species (Fig. 10 C, I ). The male genitalia are also distinctive, with a small apex that is abruptly bisected by the membranous dorsal margin. Female spermatheca (Fig. 21 L ) with stem coiled proximally, abruptly enlarged distally.

Distribution.

Known for certain only from a single hillside above a small stream in Kings Mountain State Park, York Co., SC.

Sympatry.

Members of this species have been collected under rocks with A. simplex sp. nov.

Natural history.

Members of this species are endogean in habit, occurring under deeply embedded rocks at cold times of year. Specimens have been collected in December.

‘ sinuaticollis group’

Figures

Figure 2. Habitus of eastern Nearctic Anillini. A Serranillus dunavani (South Carolina, Oconee Co.) B Anillinus moseleyae (Tennessee, Sevier Co.) C Anillinus dentatus (South Carolina, Abbeville Co.) D Serranillus jeanneli (South Carolina, Oconee Co.) E Anillinus folkertsioides (Alabama, Blount Co.) F Anillinus pecki (North Carolina, Avery Co.) G Anillinus sp. “ Georgia, Barnes Creek sp. 1 ” H Anillinus montrex (South Carolina, York Co.) I Anillinus sp. “ Tennessee, Kings Saltpeter Cave ” J Anillinus virginiae (Virginia, Bath Co.) K Anillinus erwini (Virginia, Grayson Co.) L Serranillus sp. (North Carolina, Graham Co.) M Anillinus sp. “ South Carolina, Waldrop Stone ” (South Carolina, Pickens Co.) N Anillinus sp. “ Alabama, Horseshoe Cave sp. 1 ” O Anillinus loweae (North Carolina, Haywood Co.) P Anillinus sp. “ Kentucky, Hestand sp. 1 ” Q Anillinus indianae (Indiana, Lawrence Co.) R Anillinus cf. barberi (West Virginia, Greenbrier Co.) S Anillinus hirsutus (Alabama, Madison Co.). Scale bar: 1 mm.

Figure 10. SEM micrographs of male protarsi A Anillinus jancae, left protarsus, dorsal aspect B Anillinus mica, left protarsus, dorsal aspect C Anillinus montrex left protarsus, dorsal aspect D A. jancae, right protarsus, ventral aspect E Anillinus choestoea, right protarsus, ventral aspect F Anillinus dentatus, right protarsus, ventral aspect G Serranillus dunavani (Jeannel), right protarsus, ventral aspect H Anillinus murrayae Sokolov & Carlton, right protarsus, ventral aspect I A. montrex, right protarsus, ventral aspect. Scale bars: 0.1 mm.

Figure 21. Spermathecae of Anillini species A, B Anillinus chandleri C Anillinus castaneus D Anillinus murrayae E Anillinus simplex F Anillinus dentatus G Anillinus sp. “ South Carolina, Coon Branch ” H Anillinus micamicus I Anillinus mica J Anillinus choestoea K Anillinus seneca L Anillinus montrex M Anillinus arenicollis N Anillinus jancae O Anillinus cf. nantahala P Anillinus cherokee Q Anillinus loweae R Anillinus merritti S Serranillus dunavani T Serranillus jeanneli. Scale bar: 0.1 mm.

Figure 24. Male ring sclerite, ventral aspect. A Anillinus chandleri B Anillinus castaneus C Anillinus sp. “ South Carolina, Chestnut Ridge ” D Anillinus murrayae E Anillinus simplex F Anillinus dentatus G Anillinus mica H Anillinus micamicus I Anillinus choestoea J Anillinus seneca K Anillinus arenicollis L Anillinus montrex M Anillinus jancae N Anillinus loweae O Anillinus cherokee P Anillinus merritti. Scale bar: 0.5 mm.

Figure 34. Dorsal habitus of Anillinus species in the elongatus group and sinuaticollis group A Anillinus montrex B Anillinus arenicollis C Anillinus choestoea sp. nov. D Anillinus seneca sp. nov. E Anillinus mica sp. nov. F Anillinus micamicus sp. nov. Abdomens removed in B – F for DNA extraction. Scale bars: 1 mm.