Apochinomma elongata, Haddad, 2013

Haddad, Charles Richard, 2013, A revision of the ant-like sac spider genus Apochinomma Pavesi 1881 (Araneae: Corinnidae) in the Afrotropical Region, Journal of Natural History 47 (39 - 40), pp. 2493-2529 : 2522-2525

publication ID

https://doi.org/ 10.1080/00222933.2013.791933

persistent identifier


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scientific name

Apochinomma elongata

sp. nov.

Apochinomma elongata sp. nov.

( Figures 2I View Figure 2 , 3H View Figure 3 , 9E View Figure 9 , 15A–C View Figure 15 )


The specific name refers to the elongate body of the species.


See under A. decepta sp. nov. above.


The male from Zomba Plateau in Malawi, measuring 13.6 mm in total length, is the largest known species of Afrotropical Castianeirinae .

Male (holotype, Nxai Pan, BMNH). Measurements: CL 3.78, CW 1.80, AL 4.69, AW 1.83, TL 8.73 (7.40–13.60), FL 0.20, SL 1.60, SW 1.09, AME–AME 0.08, AME– ALE 0.05, ALE–ALE 0.40, PME–PME 0.21, PME–PLE 0.24, PLE–PLE 0.90, PERW 1.02, MOQAW 0.32, MOQPW 0.42, MOQL 0.40.

Length of leg segments: I 2.10 + 0.73 + 2.06 + 1.95 + 1.35 = 8.19; II 1.96 + 0.70 + 1.85 + 1.73 + 1.20 = 7.44; III 1.91 + 0.75 + 1.63 + 1.65 + 1.00 = 6.94; IV 2.90 + 0.88 + 2.57 + 2.95 + 1.25 = 10.55.

General appearance in Figure 2I View Figure 2 , lateral view in Figure 3H View Figure 3 . Carapace elongate oval, eye region broad, tapering posteriorly to pedicel, broadest at coxa II; raised from eye region, highest at one-third carapace length, nearly level in midsection with very slight median depression, declining gradually in posterior one-third ( Figure 3H View Figure 3 ); surface finely granulate, covered in short straight white setae, with sparse white feathery setae; several long erect setae on clypeus and in eye region; fovea short, narrow, at two-thirds carapace length; carapace deep red-brown with faint black striae, black mottling on clypeus, in and behind eye region and along lateral margins of carapace. All eyes with faded black rings; AER procurved, medians larger than laterals; AME separated by distance equal to five-eighths their diameter; AME separated from ALE by distance equal to three-eighths AME diameter; clypeus height equal to twice the AME diameter; PER strongly recurved, laterals very slightly larger than medians; PME separated by distance slightly larger than twice their diameter; PME separated from PLE by distance slightly less than two and one-third times PME diameter; CW: PERW = 1.76: 1. Chelicerae orange-brown with faint brown mottling, with short straight white setae on anterior surface; three teeth on promargin, distal tooth smallest, median tooth largest; median tooth closer to distal tooth than to proximal tooth; retromargin with two slightly separated subequal teeth, distal tooth close to fang base; endites mottled dark brown, yellow-brown in prolateral third, cream at maxillar hair tuft; labium orange-brown, cream distally; sternum shield-shaped, longer than broad, deep orange with brown mottling laterally, cream distally; surface finely granulate, with short straight white setae. Legs with surface finely granulate, except for tarsi, which are finely wrinkled; covered in short straight setae, white feathery setae dense on femora and dorsal surfaces of patellae and tibiae, sparse elsewhere; femora I and II yellow with broad black proximal marking, with black prolateral, dorsal and retrolateral stripes; femora III yellow-brown with broad dark brown prolateral, dorsal and retrolateral stripes, ventral surface dark brown, distal dorsal ends yellow; femora IV dark brown with black mottling, orange at dorsal distal end; patellae I and II yellow with dorsal and retrolateral ventral black stripes; patellae III yellow with prolateral, dorsal and retrolateral stripes; patellae IV yellow-brown with fine dorsal line, prolateral ventral and retrolateral ventral stripes, ventral surface dark brown; tibiae and metatarsi I and II yellow with dorsal stripe and proximal and distal retrolateral mottled blotches; tibiae III yellow-brown and IV pale brown, with prolateral ventral, dorsal and retrolateral ventral black stripes; metatarsi III and IV mottled brown, proximal and distal ends yellow; tarsi I and II uniform yellow, III yellow with proximal black mottling, IV mottled dark brown, yellow distally. Leg spination: femora: I pl 2 do 3, II pl 1 do 3, III pl 2 do 3 rl 2, IV pl 2 do 3 rl 1; patellae: all with long fine distal do seta; tibiae: I plv 0–2 rlv 0–1, II plv 1 rlv 1, III pl 2 do 1 rl 2 plv 2 rlv 2 vt 2, IV pl 2 do 1 rl 2 plv 2 rlv 2 vt 2; metatarsi: I plv 2 rlv 2, II plv 2 rlv 2, III pl 3 rl 3 plv 2 rlv 2 vt 3, IV pl 3 rl 3 plv 2 rlv 2 vt 3. Palpal spination: femora: pl 1 do 2; patellae: pl 1 do 1; tibiae: pl 1 do 1 plv 1; tarsi: pl 1 plv 2. Abdomen elongate, broadened posteriorly, with distinct median constriction and long pedicel; dorsal scutum deep orange-brown with black mottling, covering entire dorsum, fused to pedicel anteriorly and epigastric plate and post-epigastric sclerites ventrally; two pairs of distinct sigilla present within constriction; dorsum densely covered in white feathery setae; venter dark grey, covered in short straight black setae, with scattered white feathery setae; venter with elongate orange-brown rectangular ventral sclerite, anterior and posterior margins notched; inframamillary sclerite orange-brown, subtriangular. Male palpal segments pale orange-brown with black mottling; tegulum short, less than half cymbium length, pear-shaped, pale orange, with dark red-brown insemination ducts; embolus with broad base and single coil, basal section strongly curved, nearly transverse; distal section of embolus very long and fine, similar in length to tegulum, partly hidden in alveolus in ventral and retrolateral views ( Figures 9E View Figure 9 , 15A–C View Figure 15 ).

Female. Unknown.

Type material

Holotype ♂: BOTSWANA: Nxai Pan National Park , Nxai Pan (19 ◦ 53’ S, 24 ◦ 45’ E), leg. F. Wanless and A. Russell-Smith, 7 March 1976 (among grass tufts) ( BMNH). GoogleMaps

Paratypes: MALAWI: Zomba Plateau (15 ◦ 20’ S, 35 ◦ 18’ E), leg. C. Dudley, November 1980, 1♂ ( NCA 2004 / 829) GoogleMaps . TANZANIA: Mkomazi Game Reserve, Dindira (03 ◦ 55’ S, 37 ◦ 55’ E), leg. A. Russell-Smith, 11 April 1995 ( Commiphora woodland), 3imm. 2♂ ( MRAC 211320 View Materials ) GoogleMaps .

Additional material examined

BOTSWANA: Near Maun , Manxunyane Lagoon (19 ◦ 54’ S, 23 ◦ 22’ E), leg. F. Wanless and A. Russell-Smith, 1 April 1976 (ground layer, grassland), 1sa ♀ ( BMNH) GoogleMaps .


Known from four scattered localities in southern and eastern Africa ( Figure 16 View Figure 16 ).


A ground-dwelling species recorded from woodland and wetland habitats. It is most likely a mimic of large epigeic ponerine ants.













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