Characters for Entelegynae Matrix         introduction       Legs       Carapace       Abdomen       Spinneret       Male Genitalia       Female Genitalia       Behavior and Silk Abdomen 48. Intestine:      (0) M-Shaped;    (1) straight; 49. Heart ostia number:      (0) 4;    (1) 3 or 2; 50. Anal tubercle:      (0) small;    (1) large; 51. Posterior spiracles:      (0) 2;    (1) 1;> 52. Posterior spiracles:      (0) wide;    (1) narrow; 53. Post. respiratory system:      (0) booklungs;    (1) tracheae; 54. Median tracheae:      (0) simple;    (1) branched; 55. Lateral tracheae:      (0) simple;    (1) branched;   (2) absent; 56. Epiandrous spigots:      (0) present;    (1) absent;   57. Epiandrous spigots:      (0) dispersed;    (1) 2 bunches;       This site was a research result by Charles Griswold And was designed and maintained by Xinping Wang Welcome feedback