Anillinus Casey 1918
Creators: name: Sokolov, Igor M.
name: Carlton, Christopher
name: Cornell, James F.
Publisher: name: Zenodo
Year: 2004
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Carabidae
Anillinus

description: Anillinus Casey, 1918   
 Type species: Anillus (Anillinus) carolinae Casey, 1918, by original designation. Troglanillus Jeannel, 1963 b. Synonymized by Barr 1995:240. Type species:   
 Troglanillus valentinei Jeannel, 1963 b, by monotypy.   
 Description. Habitus (Fig. 1) various, from relatively short, ovoid and moderately convex to slender, elongate and flattened. Integument various in color, from dark brown (ovoid species) to depigmented, amber testaceous (in elongate species). Body setose, vestiture of elytra shorter, one third or less length of discal fixed setae and usually obviously shorter than vestiture on disc of pronotum. Microsculpture mesh pattern polygonal and nearly isodiametric.   
Head (Figs. 2–5) various, large to normally proportioned relative to other bembidiines, tempora swollen, eyes absent. Frontal impressions obvious, short; lateral frontal carinae moderately developed; front with small tubercle at middle. Maxillary palpomere 3 elongate and setose, mentum free, mentum toothed. Chaetotaxy of dorsum of head comprising a pair of frontoclypeal setae, a pair of setae in frontal impressions (one in each groove) and two pairs of supraorbital setae. Clypeus, front and tempora also with short scattered setae. Microsculpture various from covering head to absent from most of its dorsal surface.  
Pronotum (Figs. 6–9) variously cordate, with lateral margins straight or slightly sinuate before posterior angles. Anterior angles slightly prominent. A pair of anterolateral setae between onefourth and one-third the pronotal distance from the anterior angle and a posterolateral pair on lateral margin right near posterior angles. Posterior angles prominent and various, from obtuse (100–1208) to nearly rectangular (90–1008). Thus, lateral margins of pronotum either rectilinear, convergent posteriad (toward base), or with a shallow sinuation before posterior angles. Ratio of width across anterior angles/width across posterior angles from 0.85 to 1.15. Lateral margins sparsely setose and crenulate, with 3–5 small denticles, either acute or rounded apically. Vestiture of pronotum in most species longer than on the elytra. Microsculpture various, from covering pronotum to absent from most of pronotal disc.  
 Elytral shape various, ovoid and convex to elongate, subparallel, and flattened. Humeri various, rounded in species having oval elytra and from rounded to prominent among species with subparallel elytra. Number of elytral interneurs various, from one to five, best seen at middle of elytron. Microsculpture on elytra isodiametric. Chaetotaxy represented by basal (scutellar) seta, 3 discal setae (punctures) and umbilicate series of type A (sensu Jeannel 1963 a): nine setae arranged in three groups, subhumeral (3 þ 1), middle (2) and subapical (1 þ 2), the 8th and 9th setae approximate and ‘‘geminate.’’ Basal and discal setae subequal in length. Subhumeral margins of elytra serrate.   
Apical margin of sternum VII entire in both sexes. Metacoxae widely separated. Besides vestiture, chaetotaxy of sternum VII typical for Bembidiini; comprising a pair of paramedian setae on sterna IV–VI and either two (males) or four (females) setae near apex of sternum VII.  
 Males with protarsomere I enlarged, bearing oval plate of adhesive articulo-setae (sensu Stork 1980) beneath, tarsi pentamerous. Females with protarsomeres subequal. Posterior row of 5–7 small setigerous spines of mesotibiae various in size. Males with metafemora (Figs. 10–13) simple (at most minutely granulate along posterior margin), slender or slightly swollen, or with obvious tubercles or a denticulate process on each ventral face. Females with metafemora simple. Males with metatibiae (Figs. 14–17) slender and simple, or with coarse granules along posterior margin. Females with metatibiae simple.   
Median lobe of aedeagus (Figs. 18–37) various and species-diagnostic, either evenly arcuate, or twisted. Apex simple or enlarged and modified. Internal sac with copulatory pieces various; generally of two groups of sclerites, dorsal (present) and ventral (present or absent), and group(s) of spines (present or absent).
description: Published as part of Sokolov, Igor M., Carlton, Christopher & Cornell, James F., 2004, Review of Anillinus, with Descriptions of 17 New Species and a Key to Soil and Litter Species (Coleoptera: Carabidae: Trechinae: Bembidiini), pp. 185-233 in The Coleopterists Bulletin 58 (2) on page 189, DOI: 10.1649/611, http://zenodo.org/record/10104359