| Geophilus admarinus | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Subphylum: | Myriapoda |
| Class: | Chilopoda |
| Order: | Geophilomorpha |
| Family: | Geophilidae |
| Genus: | Geophilus |
| Species: | G. admarinus |
| Binomial name | |
| Geophilus admarinus Chamberlin, 1952 | |
| Synonyms [1] | |
| |
Geophilus admarinus is a species of soil centipede in the family Geophilidae. [2] It's found in southeast Alaska under stones near the low tide mark [3] and is capable of surviving prolonged submersion underwater.
G. admarinus grows to about 25 millimeters in length and has around 47 leg pairs. It's characterized by a head longer than it is wide; first maxillae with palpus and inner process both conically pointed and each having typically 5 setae on its ventral face; smooth claws of the second maxillae; concave labrum; median division straight or slightly concave, bearing 5 long, basally dark teeth, and lateral division pectinate; syncoxite bearing a lappet on each side; coxae broadly united with no trace of a median suture; unarmed prosternum of poison claws with an absence of chitin lines and minute teeth at the base; and an absence of ventral pores. [1]
This glossary describes the terms used in formal descriptions of spiders; where applicable these terms are used in describing other arachnids.
Geophilus is a large, heterogeneous genus of soil centipedes in the family Geophilidae largely considered to be synonymous with Brachygeophilus. It is a mostly holarctic genus characterized by a claw-shaped ultimate pretarsus, anterior porefields, complete or nearly complete coxo-pleural sutures at the prosternum, and incomplete chitin-lines. The generic name first appeared in Brewster's Edinburgh Encyclopaedia in 1814 as Geophilus electricus.
Geophilus proximus is a species of soil centipede in the family Geophilidae found in the northern part of the Palearctic and widespread across the entire Baltic basin, though it reaches as far as the Arctic Circle and has been introduced through human agency to northern, central, and eastern parts of Kazakhstan. It was recorded once with certainty in Britain from Unst in the Shetland Islands; distribution in the rest of Europe is difficult to assess because of frequent misidentifications of the species. Populations from northern Europe are mostly parthenogenetic.
Geophilus aenariensis is a species of soil centipede in the family Geophilidae found in the southern Italian Peninsula. It has a body length of up to 22 millimeters, around 47 leg pairs in females and 51 in males, an absence of anal pores and bristles on the lateral part of the labrum, a distinct carpophagus pit, a small but pointed pretarsus of the second maxillae, and 3-5 coxal pores in each coxopleuron with no isolated coxal pores.
Geophilus alaskanus is a species of soil centipede in the family Geophilidae found in Alaska. It bears similarities to Mecistocephalus attenuatus, however unlike M. attenuatus, it has oblong cephalic lamina, unarmed coxae, and unarmed claw at base. G. alaskanus is dull orange-brown in color, grows to about 30 millimeters, and has 53 leg pairs with the first pair being very small and the last pair being distinctly larger than the others. It also possesses coalesced frontal lamina, unexposed basal lamina broader than the cephalic, a prehensorial sternum that's broader than it is long, distinct lateral grooves, obsolete prosternal teeth, a smooth, bare dorsal surface except for two faint impressed lines, and a small pleurae of the last segment marked with 8–10 pigmented pores of which the posterior one of the ventral face is larger than the others and sunk in a deep cavity.
Geophilus gracilis is a species of soil centipede in the family Geophilidae found most commonly in Britain and Ireland, though specimens have also been recorded in Chile, France, Greece, and Algeria. It lives under mud and stones along the coast near or below the high tide mark, grows up to 30 millimeters in length, has between 51 and 57 leg pairs, and is bright yellow in color with a darker reddish head. It is often confused with G. flavus and, in coastal locations, G. osquidatum.
Geophilus algarum is a species of centipede in the family Geophilidae found in the littoral zone on the French Atlantic and Channel Coasts. It has one subspecies, G. algarum var. decipiens, which can be identified by lack of a dorsal coxal pore. The male of this species has 53 pairs of legs; females have 53 to 59.
Geophilus fucorum is a halophilic species of soil centipede in the family Geophilidae found in the French Mediterranean, Corsica, Italy, and Greece. Males of this species have 49 to 53 pairs of legs; females have 53 to 55.
Geophilus mordax, also called the pitted soil centipede, is a species of soil centipede in the family Geophilidae found in North America, especially Indiana, Arkansas, Louisiana, North and South Carolina, and Florida. It grows up to 50 millimeters in length, though it averages 25–40, has 49–53 leg pairs in males and 49–57 in females, and is bright red in color. G. mordax also bears 3–5 labral teeth, a short and robust apical claw of the second maxillae, an exposed prebasal plate, and a large, consolidated sacculi.
Geophilus anonyx is a species of soil centipede in the family Geophilidae found in Oregon. It was originally placed in the genus Brachygeophilus based on the lack of sternal pores, a character shared with the type species B. truncorum, however it was later moved to Geophilus.
Geophilus atopodon is a species of soil centipede in the family Geophilidae found in Beulah, New Mexico. Its body is uniformly light brown, up to 25 millimeters long and rather thick, narrowed posteriorly, with 49–51 leg pairs, a discrete frontal plate, and a long claw of the anal legs.
Geophilus becki is a species of soil centipede in the family Geophilidae found in Cabrillo Beach, California near San Pedro under rocks and kelp at the water's edge. It grows up to 50 millimeters long and is generally orange-yellow in color with clear yellow legs and 61-63 leg pairs.
Geophilus nicolanus is a species of soil centipede in the family Geophilidae found on San Nicholas Island, California. It's dark brown in color and grows up to 62 millimeters long, with 63 leg pairs, a concealed prebasal plate, numerous coxal pores, and a very wide final ventral plate with convex sides.
Geophilus richardi is a species of soil centipede in the family Geophilidae found in France, Italy, and the Ionian Islands. Females of this species have 33 pairs of legs; males have 29 or 31. This species is one of only two in the family Geophilidae to include centipedes with as few as 29 leg pairs. This species grows up to 10 millimeters long, has no carpophagus pit or pore-fields, and has a gradually tapering, curved pretarsus of the second maxillae. G. richardi lacks typical ventral pores between 2–4mm. The sternites instead bear a small number of pores between 0.5–1mm that differ from micropores, which are unbounded by a cuticular ring. These are possibly the remnants of typical ventral pores, their smaller size being a byproduct of overall miniaturization.
Geophilus tampophor is a species of soil centipede in the family Geophilidae found in Oregon. It was originally placed in the genus Brachygeophilus, however it was later moved to Geophilus. Like G. anonyx, it differs from other western American geophiliids by having prehensorial claws armed at the base, however unlike G. anonyx it possesses armed anal claws and a lesser number of legs.
Geophilus pusillifrater is a species of soil centipede in the family Geophilidae found in Bosnia-Herzegovina and Britain. It's a relatively small, pale species with just 41-43 leg pairs, prehensorial claws with pointed teeth at the base, distinct chitin lines, and a very broad ventral plate of the pregenital segment. It's at least partially a littoral creature.
Geophilus koreanus is a species of soil centipede in the family Geophilidae found in North Korea. It's yellow in color and grows up to 30 millimeters long, with 69 leg pairs, a clypeus rather longer than wide, filiform antennae, central part of the labrum with 8 teeth, maxilla completely fused without median suture, tergite bifurcate, final leg tarsus bipartite, and a clawed pratarsus. It's similar to G. strictus, though the latter differs by the middle part of the labrum bearing a large number of very small teeth, and the final hip bearing a large number of pores.
Geophilus bosniensis is a species of soil centipede in the family Geophilidae endemic to Bosnia and Herzegovina. It grows up to 30 millimeters and has 75 leg pairs, as well as sternites unseparated in the median but with a suture line, and sternal pore areas in the trunk segments only. Overall, the identity and phyletic position of this centipede are uncertain.
Geophilus claremontus is a species of soil centipede in the family Geophilidae found in Claremont, California, after which it was named. It was incorrectly placed in the genus Brachygeophilus in 1929 by Attems, most likely based on the lack of sternal pores.
Geophilus erzurumensis is a species of soil centipede in the family Geophilidae found only in Erzurum, Turkey, which it is named after.