The BugsCEP package consists of two main files:
- BugsCEP which contains the forms, queries and code that make up the user interface
- Bugsdata which contains almost all of the data.
The latter is a relational database built in MS Access 2000, with about 43 tables which contain the data enumerated below.

The setup program will also install a number of support files if necessary, including those necessary to run an Access database on a PC without the full software installed.

The vast majority of data has been input by Paul Buckland, including the extensive recent database update (see below).

(Please note that this map is not updated with the data below!)

Species related

9448 5790 Taxa 5635 2601 Synonyms 664 500 Records of species association 1745 1702 UK RDB rarity records 8350 5107 Species attribute records(mainly size data

• 3722 3146 References

Fossil record and other sample based

• 774 678 Sites (of which 740 have known coordinates)
• 790 544 abundance datasets/countsheets
• 105119 67294 Fossil record entries (which make up the 790 countsheets)
• 5778 3339 Recorded dates of which: 762 radiometric; 4271 period; 745 calendar

Climate and Ecology

• 436 MCR thermal envelopes
• 25806 22595 Ecology text excerpts
• 25648 21929 Distribution text excerpts
• 8430 8317 BugsEcoCode assignments
• 12220 11152 Koch Ecology Code assignments
• 9774 9707 UK Monthly activity records

Other

• 273 216 Identification keys (by Peter Skidmore)