<PAGE>   1
                       SECURITIES AND EXCHANGE COMMISSION
                              WASHINGTON, DC 20549
                                    Form 10-Q



  X      QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15 (D) OF THE SECURITIES
         EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED June 30, 1997.


 ___     TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 (D) OF THE SECURITIES
         EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM _____ TO ______ .



Commission File number:  0-16601 (formerly 33-16164-LA)



                       FMG RITA RANCH LIMITED PARTNERSHIP
                           (Exact name of registrant)


Delaware                                                   23-2466343

(State or other jurisdiction of                         (I.R.S. Employer
incorporation or organization)                         Identification No.)

250 King of Prussia Road, Radnor, PA  19087
(Address of Principal Executive Offices)

Issuer's Telephone Number:  (610 964-7234)

Indicate by check mark whether the registrant (a) has filed all reports required
to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during
the preceding 12 months (or for such shorter period that the registrant was
required to file such reports) and (2) has been subject to such filing
requirements for the past 90 days. Yes /X/     No / /
<PAGE>   2
PART I - FINANCIAL INFORMATION

Item 1 - Financial Statements

         The unaudited financial statements of FMG Rita Ranch Limited
partnership (the "Partnership") at June 30, 1997 are attached hereto as Exhibit
A.

         In the opinion of management, the accompanying unaudited condensed
financial statements include all adjustments, which are of a normal recurring
nature, necessary to present fairly the Partnership's financial position as of
June 30, 1997, and the results of its operations and cash flows for the six
months ended June 30, 1997.

Item 2 - Management's Discussion and Analysis of Financial Condition and Results
of Operations.

         Background

         The Partnership is a Delaware limited partnership. The Partnership was
formed on January 30, 1987 by FMG Western Region Acquisitions, Inc. (the
"General Partner") and the initial limited partner, FM Initial, Inc., with an
initial contribution of $25,000 by the General Partner. The General Partner is
an indirect wholly-owned subsidiary of The Fidelity Mutual Life Insurance
Company (in Rehabilitation) ("Fidelity Mutual"). In accordance with the Amended
and Restated Limited partnership Agreement dated December 17, 1987 (the
"Partnership Agreement"), FM Initial, Inc. withdrew from the partnership upon
admittance of new limited partners. The Partnership was formed to acquire and
realize appreciation in a certain 118 acre parcel of undeveloped land near
Tucson, Arizona (the "Property") by holding it for investment and eventual sale,
although there is no assurance that this will be attained.

         Results of Operations

         The Partnership's revenues for the second quarter of 1997 consisted of
interest income of $1 and partnership transfer fees of $75. Expenses for the
second quarter of 1997 consisted of general and administrative costs of $1,655,
management fees of $3,750, insurance of $27 and real estate taxes of $2,366.

         The Partnership's revenues for the second quarter of 1996 consisted of
interest income of $2 and partnership transfer fees of $25. Expenses for the
second quarter of 1996 consisted of general and administrative costs of $1,875,
management fees of $3,750, insurance of $34 and real estate taxes of $2,604.

                                       2
<PAGE>   3
         The Partnership's revenues for the second quarter of 1995 consisted of
interest income of $2. Expenses for the second quarter of 1995 consisted of
general and administrative costs of $1,470, management fees of $3,750, insurance
of $31 and real estate taxes of $3,283.

         The Partnership's revenues for the first quarter of 1997 consisted of
interest income of $2. Expenses for the first quarter of 1997 consisted of
general and administrative costs of $1,255, management fees of $3,750, insurance
of $27 and real estate taxes of $2,367.

         The Partnership's revenues for the first quarter of 1996 consisted of
interest income of $2 and partnership transfer fees of $75. Expenses for the
first quarter of 1996 consisted of general and administrative costs of $1,430,
management fees of $3,750, insurance of $35 and real estate taxes of $2,604.

         The Partnership's revenues for the first quarter of 1995 consisted of
interest income of $2. Expenses for the first quarter of 1995 consisted of
general and administrative costs of $1,557, management fees of $3,750, insurance
of $31 and real estate taxes of $3,282.

         The General Partner has no plans to develop the Property, except for
activities including land planning, market surveys and other activities
necessary to prepare the Property for sale. There can be no assurance that
necessary funds would be available should it be desirable for the Partnership to
improve the Property to facilitate its sale.

         Because of the lack of demand for industrial and commercial land in the
Tucson area and the resulting decline in the Property's value, the Partnership
was required to reduce its carrying value on the Property in 1990 and again in
1992. The General Partner believes that it would be necessary for the
Partnership to hold the property for several years, possibly decades, before the
Partnership may be able to sell the Property at a price which approximates the
price paid by the Partnership for the Property. Thus, it is unlikely that the
Property will be sold for a price which approximates the original price paid by
the Partnership for the Property.

         Liquidity and Capital Resources

         The Partnership has no cash reserve remaining at June 30, 1997. As
shown in the accompanying financial statements, the Partnership has incurred
substantial operating losses in each of the past three years. Such losses will
continue until the Partnership begins to sell land parcels. In the partnership
agreement, the General Partner has committed to contribute up to $600,000 to the
capital of the Partnership as the need for additional working capital arises.
Cumulative amounts funded by the General Partner amounted to $290,832 at June
30, 1997. Realization of the partnership's assets is dependent upon the
continued funding of operating deficits by the General Partner and its
affiliate. There can be no assurance, however, that the General Partner or its
affiliate will continue to fund operating deficits.

                                       3
<PAGE>   4
         During 1992 and 1990, the Partnership recorded writedowns of $830,000
and $6,261,041 respectively.

         The weak conditions in both the real estate and industrial sectors of
Tucson are responsible for nearly halting sales of undeveloped industrial land.
These unfavorable conditions have contributed to the substantial decrease in the
value of the Partnership's land.

         While the growth in the Rita Ranch Planned Community is encouraging, we
continue to believe that the property should be held until the demand for
industrial land and corresponding values rebound.

PART II - OTHER INFORMATION

Item 1 - Legal Proceedings

         The Partnership is not a direct party to, nor is the Partnership's
property directly the subject of, any material legal proceedings. However, on
November 6, 1992, the Commonwealth Court of Pennsylvania issued an order placing
The Fidelity Mutual Life Insurance Company ("Fidelity Mutual"), the indirect
parent of the General Partner of the Partnership, into rehabilitation under the
control and authority of the Pennsylvania Insurance Commissioner pursuant to the
provisions of the Pennsylvania Insurance Department Act, 40 P.S. Section 221.1
et seq. The Partnership is not a direct party to the order, but ownership of
the stock of the General Partner and the stock of the majority Limited Partner
is vested in the Insurance Commissioner pursuant to the Order.

Item 2 - Changes in Securities

         There was no change in the partnership's securities during the second
quarter of 1997.


Item 3 - Defaults Upon Senior Securities

         There was no default in the payment of principal, interest, a sinking
or purchase fund installment or any other default with respect to any
indebtedness of the Partnership. The Partnership has issued no preferred stock;
accordingly, there has been no arrearages or delinquencies with respect to any
such preferred stock.


Item 4 - Submission of Matters to a Vote of Security Holders

         No matters were submitted to the Partners for a vote during the second
quarter of 1997.

                                       4
<PAGE>   5
Item 5 - Other Information

         None


Item 6 - Exhibits and Reports on Form 8-K

Reports on Form 8-K

         None



Exhibits (numbered in accordance with Item 601 of Regulation S-K)

<TABLE>
<CAPTION>
Exhibit Numbers                     Description                                    Page Number
---------------                     -----------                                    -----------
<S>                                 <C>                                            <C>
3.1(a)                              Certificate of Limited                         *
                                    Partnership

3.1(b) & (4)                        Restated Limited Partnership                   **
                                    Agreement

9                                   not applicable

11                                  not applicable

12                                  not applicable

13                                  not applicable

16                                  not applicable

18                                  not applicable

19                                  not applicable

22                                  not applicable

23                                  not applicable
</TABLE>

                                       5
<PAGE>   6
<TABLE>
<CAPTION>
<S>                                 <C>
24                                  not applicable

25                                  not applicable

28                                  not applicable

29                                  not applicable
</TABLE>

*Incorporated by reference to Exhibit 3.1 filed as part of the Exhibits to the
Partnership's Registration Statement on Form S-18, Registration No. 33-16164-LA.

**       Incorporated by reference to Exhibit 3.2 filed as part of the
partnership's Registration Statement on Form S-18, Registration No. 33-16164-LA.

                                       6
<PAGE>   7
                                    SIGNATURE


         Pursuant to the requirements of the Securities Exchange Act of 1934,
this Report has been signed below by the following persons on behalf of the
Registrant and in the capacities and on the date indicated.


Signature                              Title                         Date



/s/ Arthur W. Mullin                   President,                    8/11/1997
-----------------------------          Treasurer,
Arthur W. Mullin                       Director of
                                       FMG Western
                                       Region
                                       Acquisitions,
                                       Inc.



/s/ James W. Kelican, Jr.              Vice President,               8/11/1997
-----------------------------          Director of
James W. Kelican, Jr.                  FMG Western
                                       Region
                                       Acquisitions,
                                       Inc.

                                       7
<PAGE>   8
EXHIBIT A

                       FMG RITA RANCH LIMITED PARTNERSHIP

                                 BALANCE SHEETS


<TABLE>
<CAPTION>
                                                       June 30,        December 31,
                                                        1997              1996
                                                     (Unaudited)
                                                      ---------         ----------
<S>                                                   <C>               <C>
     ASSETS


Land held for investment                              $350,000          $350,000
                                                                        
Cash and cash equivalents                                  294               267
                                                                        
Prepaid insurance                                           27                 -
                                                      --------          --------
                                                      $350,321          $350,267
                                                      ========          ========


LIABILITIES AND PARTNERS' EQUITY                                        


   Accrued expenses                                   $ 10,933          $  9,661
                                                                        
   Due to affiliates                                         -              3750
                                                                        
   Partners' Equity                                    339,388           336,856
                                                      --------          --------
                                                      $350,321          $350,267
                                                      ========          ========
</TABLE>

                                        1
<PAGE>   9
                      F M G RITA RANCH LIMITED PARTNERSHIP

                  STATEMENTS OF OPERATIONS AND PARTNERS' EQUITY

                                   (Unaudited)


<TABLE>
<CAPTION>
                                                 Three months    Three months      Six months      Six months
                                                    ended           ended            ended            ended
                                                   June 30,        June 30,         June 30,         June 30,
                                                     1997            1996             1997             1996
                                                     ----            ----             ----             ----
<S>                                              <C>             <C>               <C>             <C>
REVENUES:
  Interest income                                 $      1         $      2         $      3         $      4 
  Other income                                          75               25               75              100
                                                  --------         --------         --------         --------
                                                        76               27               78              104
                                                  --------         --------         --------         -------- 

EXPENSES:                                                                                            
  Real estate taxes                                  2,366            2,604            4,733            5,208
  Management fees                                    3,750            3,750            7,500            7,500
  General and administrative                         1,655            1,875            2,910            3,305
  Insurance                                             27               34               54               69
                                                  --------         --------         --------         -------- 
                                                     7,798            8,263           15,197           16,082
                                                  --------         --------         --------         -------- 

          NET LOSS                                $ (7,722)        $ (8,236)        $(15,119)        $(15,978)

Partners' equity,                                                                                    
   Beginning of period                             338,217          337,609          336,856          336,613
                                                                                                     
Capital Contributions                                8,893            9,652           17,651           18,390
                                                  --------         --------         --------         --------
Partners' equity,                                                                                    
   End of period                                  $339,388         $339,025         $339,388         $339,025
                                                  ========         ========         ========         ========

Weighted Average Number of                                                                           
   Limited Partnership Units                                                                         
   Outstanding                                       6,707            6,707            6,707            6,707
                                                  ========         ========         ========         ========
Loss from Operations per                                                                             
   Limited Partnership                                                                               
   Interest                                        $(1.14)          $(1.22)          $(2.23)          $(2.36)
                                                  ========         ========         ========         ========
</TABLE>

                                        2
<PAGE>   10
                      F M G RITA RANCH LIMITED PARTNERSHIP

                  STATEMENTS OF OPERATIONS AND PARTNERS' EQUITY

                                   (Unaudited)



<TABLE>
<CAPTION>
                                                     SIX MONTHS
                                                    ENDED JUNE 30
                                                    -------------
                                            1997          1996          1995
                                            ----          ----          ----
<S>                                       <C>           <C>           <C>
REVENUES:
  Interest income                         $      3      $      4      $      4
  Other income                                  75           100             -
                                          --------      --------      --------
                                                78           104             4
                                          --------      --------      --------

EXPENSES:                                                             
  Real estate taxes                          4,733         5,208         6,565
  Management fees                            7,500         7,500         7,500
  General and administrative                 2,910         3,305         3,027
  Insurance                                     54            69            62
                                          --------      --------      --------
                                            15,197        16,082        17,154
                                          --------      --------      --------

          NET LOSS                        $(15,119)     $(15,978)     $(17,150)

Partners' equity,                                                     
   Beginning of period                     336,856       336,613       339,196

Capital Contributions                       17,651        18,390        10,906
                                          --------      --------      --------

Partners' equity,                                                     
   End of period                          $339,388      $339,025      $332,952
                                          ========      ========      ========

Weighted Average Number of                                            
   Limited Partnership Units                                          
   Outstanding                               6,707         6,707         6,707
                                          ========      ========      ========

Loss from Operations per                                              
   Limited Partnership Interest           $ (2.23)      $ (2.36)      $ (2.53)
                                          ========      ========      ========
</TABLE>

                                        3
<PAGE>   11
                      F M G RITA RANCH LIMITED PARTNERSHIP

                            STATEMENTS OF CASH FLOWS

                                   (Unaudited)


<TABLE>
<CAPTION>
                                                        FOR THE SIX MONTHS
                                                           ENDED JUNE 30
                                                        ------------------
                                                 1997            1996          1995
                                                 ----            ----          ----
<S>                                            <C>            <C>            <C>
CASH FLOWS FROM OPERATING ACTIVITIES:

    Net income (loss)                          $(15,119)      $(15,978)      $(17,150)
    Adjustments to reconcile net                                             
       income (loss) to net cash                                             
       used in operating activities:                                         
                                                                             
       Increase in General Partner's                                         
          capital                                17,651         18,390         10,906
      (Increase) in prepaid expenses                (27)           (35)           (31)
      Increase (decrease) in                                                 
          accrued expenses                        1,272          1,416          6,219
      Increase (decrease) in                                                 
          due to affiliate                       (3,750)        (3,750)             -
                                               --------       --------       --------
       Net cash provided by (used in)                                        
          operating activities                 $     27       $     43       $    (56)
                                               --------       --------       --------

       Cash, Beginning of period                    267            205            292


       Cash, End of period                     $    294       $    248       $    236
                                               ========       ========       ========
</TABLE>

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